Answers
Related Questions
Using the graph below, what does 'K' represent?
3
k
population
2
time
Death rate
Exponential growth
Ecosystem decline
Carrying capacity
Answers
Answer:
Explanation:
I can't help u cause there is no graph
Morgan and his colleagues worked out a set of symbols to represent fly genotypes. Which of the following is a representative fly genotype?
a) AaBb × AaBb b) 46 or 46w.
c) AA or Aa.
d) w+w
Answers
Representative fly genotypes observed by Morgan were w+w. w+ represents the red eye allele and w represents the white eye allele.
The correct answer is D
The genotype is a trait carried by the gene, which is not visible from the outside and is symbolized by a pair of letters, for example, AA, Aa, aa, AABB, and AaBB.
Variations in the color of the eyes of Drosophila or fruit flies are determined by multiple alleles. These variations have degrees/gradations ranging from dark red to light to white which also corresponds to the strength of the codominance of the alleles. The most dominant is the w+ allele (normal) and the most recessive is the w allele (white).
White eyes occur due to damage to the white gene which is located on the first chromosome locus 1.5 and does not produce red pigment at all.
Learn more about fly genotype at https://brainly.com/question/15386750
#SPJ4
a) One problem that all respiring organisms share is the need for biological structures that allow efficient uptake of oxygen and removal of carbon dioxide. Two types of structures that have evolved for carrying out gas exchange are gills and lungs. The table below lists organisms according to the type of structure they use for gas exchange.
•Describe the general process of gas exchange that occurs between a gill or lung and the surrounding environment.
• Describe three similarities in the structures of gills and lungs that help ensure high efficiency of gas exchange.
• Explain why one group of organisms evolved to have gills while the other group evolved to have lungs. Include in your explanation a discussion about the two groups of salamanders shown in the table.
• Describe the probable characteristics of the gas exchange structure present in a common ancestor of all of the organisms listed in the table. Explain how evolution played a role in the development of the gill and the lung.
2) All animals must solve the problem of nitrogen waste excretion in order to maintain homeostasis. There are three basic types of nitrogen waste products that animals produce: ammonia, urea, or uric acid. Aquatic animals tend to produce ammonia, whereas terrestrial animals tend to produce either urea or uric acid.
• Explain why nitrogen excretion is an important aspect of animal homeostasis.
• Explain how the types of nitrogen excretion, their energy requirements, and habitat are related.
• Explain how the three animals listed in the table above provide an example of how a group of animals can show continuity due to common ancestry as well as divergence due to adaptation to different environments.
Answers
Gills and lungs facilitate gas exchange between organisms and the environment, with similarities including large surface area, thin membranes, and rich blood supply, while their evolution stems from adaptations to aquatic and terrestrial habitats, respectively, demonstrating divergence and continuity among species.
1) Gas Exchange in Gills and Lungs:
Gas exchange in gills and lungs involves the diffusion of gases (oxygen and carbon dioxide) between the respiratory structures and the surrounding environment. In both cases, the process relies on a concentration gradient. Oxygen diffuses from the environment into the respiratory structures, while carbon dioxide moves in the opposite direction.Similarities in Structures of Gills and Lungs:
Large Surface Area: Both gills and lungs have extensive surface areas to maximize contact between respiratory structures and the surrounding environment.Thin Membranes: The exchange surfaces in gills and lungs are thin, allowing for a shorter diffusion distance and efficient gas exchange.Rich Blood Supply: Both gills and lungs have a rich network of blood vessels, ensuring a close proximity of respiratory structures to blood for efficient gas exchange.Evolution of Gills and Lungs:
Gills evolved in aquatic organisms to extract oxygen dissolved in water, while lungs evolved in terrestrial organisms to extract oxygen from the air. The salamanders provide an example of divergence in gas exchange structures, as some species have evolved gills to respire in aquatic environments, while others have developed lungs to respire in terrestrial habitats.Probable Characteristics of Common Ancestor:
The common ancestor of the organisms in the table likely had a primitive gas exchange structure, possibly a simple diffusion-based system. Over time, evolution led to the development of more specialized and efficient structures like gills and lungs, which improved the organism's ability to extract oxygen from their respective environments.2) Importance of Nitrogen Excretion:
Nitrogen excretion is vital for animal homeostasis as it eliminates toxic nitrogenous waste products produced during protein and nucleic acid metabolism. Accumulation of nitrogenous waste can lead to harmful effects on cellular functions and overall health.Relation between Nitrogen Excretion, Energy Requirements, and Habitat:
The type of nitrogenous waste excreted by an animal is closely related to its habitat and energy requirements. Aquatic animals, like the marine turtle, excrete ammonia, which is highly toxic but requires low energy for its synthesis. Terrestrial animals, like the land tortoise, excrete urea, which is less toxic but requires moderate energy for its production. Desert tortoises excrete uric acid, which is the least toxic but requires a high amount of energy for its synthesis.Continuity and Divergence in Animals:
The three animals listed in the table (marine turtle, land tortoise, and desert tortoise) exemplify continuity due to their common ancestry as reptiles. However, they demonstrate divergence in their nitrogen excretion strategies, adapting to different environments. Marine turtles excrete ammonia to efficiently eliminate waste in their aquatic habitat, while land tortoises have adapted to terrestrial life and excrete urea. Desert tortoises, living in arid environments, excrete uric acid to conserve water. These adaptations showcase how animals diversify their excretion methods to suit their specific habitats while maintaining a common ancestry.In conclusion, the presence of gills and lungs in organisms enables efficient gas exchange with the environment, with similarities in structure ensuring effectiveness, while their evolution reflects adaptation to aquatic and terrestrial habitats, showcasing divergence and continuity among species.
For more such questions on terrestrial habitats:
https://brainly.com/question/16596851
#SPJ8
Southern California has experienced record-breaking wildfires many times in recent history. What environmental cause most likely increased the chances of wildfires catching and spreading in the area?
Answers
It's important to recognize that wildfires are complex events influenced by a combination of factors, including human activities, fire suppression policies, and natural climate variability.
In Southern California, several environmental factors contribute to the increased chances of wildfires catching and spreading. The primary factor is the region's Mediterranean climate, characterized by hot, dry summers and seasonal Santa Ana winds.
Here are some key environmental causes that can increase the likelihood of wildfires in Southern California:
Drought: Prolonged periods of drought create dry vegetation, which acts as fuel for wildfires. In recent years, Southern California has experienced severe drought conditions, leading to increased fuel availability and heightened fire risk.
Vegetation type: The region is home to chaparral and shrubland ecosystems that contain highly flammable vegetation, such as dry brush and grasses. These plant communities are adapted to fire, and their flammability contributes to the rapid spread of wildfires.
Santa Ana winds: Southern California experiences strong, dry winds known as Santa Ana winds. These winds originate from the Great Basin and flow towards the coast, causing extremely low humidity and enhancing fire conditions. They can quickly spread wildfires, making them more difficult to control.
Urban interface: The expansion of human settlements into wildland areas creates an interface where urban areas meet natural vegetation. This interface increases the risk of wildfires due to the proximity of flammable structures to fire-prone environments.
Climate change: While not a direct cause of individual wildfires, climate change can exacerbate the conditions favorable for wildfires. Rising temperatures, prolonged droughts, and altered precipitation patterns contribute to increased fire risks in many regions, including Southern California.
The interplay of these factors can vary from one fire event to another, making it challenging to pinpoint a single environmental cause for any specific wildfire.
for similar questions on wildfires
https://brainly.com/question/9994514
#SPJ8
How does diffusion occur in cells? Please submit your conclusion paragraph.
Answers
Diffusion is an essential process for the functioning of cells, as it allows for the exchange of materials and energy between the cell and its environment. Diffusion occurs when molecules move from an area of higher concentration to an area of lower concentration. This process occurs within the cell membrane, as molecules of solutes move across the membrane as well as through the membrane. Diffusion is important for the transport of substances across cells, which is necessary for metabolic processes and other essential functions. Diffusion is an important process that helps cells to maintain homeostasis.
blood pressure decreases below normal levels. blood flow to the heart decreases. heart is unable to pump as much blood. blood pressure decreases even more. this is an example of ___ feedback.
Answers
Blood pressure decreases below normal levels. blood flow to the heart decreases. heart is unable to pump as much blood. blood pressure decreases even more. this is an example of positive feedback.
Less than 120/80 mm Hg is regarded to be within the normal range for blood pressure. Keep up heart-healthy routines like maintaining a balanced diet and engaging in regular exercise if your findings fall into this category.
When readings are consistently between 120 and 129 systolic and fewer than 80 mm Hg diastolic, the blood pressure is considered to be elevated. Unless action is taken to control the condition, those with raised blood pressure are prone to develop high blood pressure.
If your blood pressure continuously falls between 80 and 89 mm Hg diastolic or 130 to 139 systolic, you have hypertension stage 1. Depending on your risk of developing atherosclerotic cardiovascular disease (ASCVD), which includes heart attack or stroke, doctors will likely advise lifestyle changes at this stage of high blood pressure.
Blood pressure that continuously ranges at 140/90 mm Hg or higher is considered to be in Stage 2 hypertension. Doctors would probably advise a mix of blood pressure drugs and lifestyle modifications at this stage of high blood pressure.
Getting medical help is necessary at this point in high blood pressure. You should wait five minutes before taking another reading if your blood pressure readings suddenly rise above 180/120 mm Hg. Don't wait to call your doctor if your levels are still unusually high. It's possible that you're going through a hypertensive crisis.
To know more about blood pressure click here:
https://brainly.com/question/4215574
#SPJ4
Two genes affect nest-building behavior in a rodent, but a dihybrid cross (SsBb x SsBb) produces only three phenotypes, nests built in trees, nests built on the ground, and nests built underground. Which of the following might explain this result? Choose all that apply. O duplicate dominant epistasis O dominant epistasis O recessive epistasis O duplicate recessive epistasis
Answers
In the question, three phenotypes describe the observation of dominant epistasis or recessive epistasis because all can create three phenotypes ( Dominant epistasis 12:3:1 and recessive epistasis 9:3:4 ), hence options B and C are correct.
What is epistasis?It is the kind of interaction in which the effect of the gene mutation depends on the mutation of another gene.
In normal crossing over in a dihybrid cross it represents the ratio of (SsBb x SsBb) makes four phenotypes (9:3:3:1), but here it produces nests built in trees, nests built on the ground, and nests built underground, which are three phenotypes shows epistasis.
Therefore, dominant epistasis and recessive epistasis is the correct observation.
Learn more about epistasis, here:
https://brainly.com/question/30651608
#SPJ1
100 words
Have you personally experienced unprofessional behavior from a healthcare provider or coworker in the past? If so, please share the experience and how it made you feel as a patient or coworker.
Answers
I want to help you, I was in the process of answering the question with my own experience. However, this is really personal and it's asking for one of your own experiences. I'm sorry, but you can do it♡
How can complex interactions in ecosystems maintain relatively consistent numbers and types of organisms in stable conditions, but changing conditions result in new problems and changes in the ecosystem?
Answers
Answer:
A complex set of interactions within an ecosystem can keep its numbers and types of organisms relatively constant over long periods of time under stable conditions living organisms in an ecosystem can be divided into three categories: producers, consumers and decomposers. They are all important parts of an ecosystem. Producers are the green plants. They make their own food.
Explanation:
I hope it helps btw please follow me & please mark me as the brainless TYSM
The complex interaction between factors in an ecosystem is necessary and in stable conditions, it is common and necessary, but when conditions change the priorities of factors change, and it creates problems in interaction and thus for the ecosystem.
What are interactions?Under stable conditions, a complex web of interactions within an ecosystem can keep the variety and abundance of its creatures relatively constant over long periods of time. There are three types of living things in an ecosystem: producers, consumers, and decomposers.
A condition like a drought arrived, there will be competition between animals and between plants would increase, and it creates the best will survive.
Thus, however, when conditions change, the relative importance of the various factors shifts, which poses challenges for the ecosystem's interactions.
To learn more about interactions in ecosystems, refer to the link:
https://brainly.com/question/2140803
#SPJ2
What did Elodea, Muscle, Fungus all have in common?
They are made of cells
O They shared the same magnification amount
They were the same size
Answers
Answer:
The correct option is They are made of cells
Explanation:
Cell is the structural and functional unit of life. Although, the three specimen given are of different "classes" but they are all of living origin. And all living things are made up of cells. For instance, Elodea is an aquatic plant (popularly called waterweed) is made up of plant cells. While Muscle is a tissue found in many animals and is made up of cells (muscle cells/myocytes); since cells generally join together to form tissues. Fungus is a eukaryotic organism and hence is also made of cells.
If you measure the rate of respiration of plant root hair cells, would you expect it to be the same as, more than, or less than the rate of
respiration of other plant cells? Explain your answer. (2pts)
Answers
Answer:
The process of respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth. In many ways, respiration is the opposite of photosynthesis. In the natural environment, plants produce their own food to survive.As with photosynthesis, plants get oxygen from the air through the stomata. Respiration takes place in the mitochondria of the cell in the presence of oxygen, which is called "aerobic respiration".
In plants, there are two types of respiration: dark respiration and photo respiration. The first kind occurs in the presence or absence of light, while the second occurs exclusively in the presence of light.Plant respiration occurs 24 hours per day, but night respiration is more evident since the photosynthesis process ceases. During the night, it is very important that the temperature is cooler than during the day because plants can experience stress. Imagine a runner in a marathon.
roots respire too!
One of the functions of the substrate is to serve as a site for air exchange between the root zone and atmosphere. In other words, roots breathe oxygen like we do. Different plants have different oxygen requirements for their root systems.
For example,
the root system of a poinsettia requires a lot of oxygen, so it is best to use a substrate with high air porosity, while hostas can live well in a substrate with a high water holding capacity.
Pls help I’ve been looking for hours
Answers
Answer:
Explanation:
The shape of the protein is really important for the function. Disulfide bonds also called disulfide bridges are important for stabilizing the protein. If the structure of the protein is damaged (by heat or other factors), then the protein will not be able to perform its function.
which statement explains how a stable ecosystem can exist even while the populations in it change over time?
Answers
Explanation:
A stable ecosystem can exist even while the population in it change over time because ecosystems are composed of many different species that interact with each other in complex ways. These interactions create a balance in the ecosystem, where each species has a role to play and depends on other species for survival. As the population of one species changes, it can have an impact on other species, but the ecosystem as a whole can adapt and adjust to these changes. In addition, there are often multiple factors that regulate population size, such as availability of food and resources, predators, and disease, which can help maintain stability in the ecosystem. Furthermore, many species have adaptations that allow them to regulate their own population size, such as territorial behavior or reproductive strategies. Overall, a stable ecosystem is able to maintain a balance despite fluctuations in population sizes, as long as the interactions between species remain intact.
What are the characteristic of solute plssss po
Answers
Solute is the substance that dissolves
Solute is a minor componentSolvent is a major componentSolutions is a mixture where the solute is uniformly distributed in the solvent.Solution is homogeneous mixture that contains particles the size of a typical ion or small molecule.The mass of the solute dissolved per unit volume of solvent is called ConcentrationSolubility is The concentration of a saturated solutionSolutes lower the freezing point and raise the boiling point of a solvent.Saturated Solution is a solution in which no more solid can be dissolvedUnsaturated Solution is solution in which more solid can be dissolvedPrecipitate is a solid that crystallizes out of a saturated solution as it is cooled.To know more about solute visit :
https://brainly.com/question/7932885
#SPJ9
4. A student is given two different objects, a marble and a cube, that appear to be made of the same substance. The student did some measurements of the objects and
recorded the measurements in the table.
Volume before
adding the
marble
Volume of the
water with the
marble added
Mass of the
cube is 66
Mass of the
martile-715
Cube dimensions:
length 2.4 cm
width: 1.3 cm
height 2.7 cm
Using the student's measurements, What is the best determination that can be made about the objects?
The formula for density is D=MIV.
A. The objects are different substances because their masses are different
B. The objects are different substances because their densities are different.
C. The objects are different substances because their volumes are different.
D. The objects are the same substance because they have the same density
Answers
The true statement is that the objects are different substances because their densities are different.
Density is an intrinsic property of matter. It does not depend on the amount of substance present. It is a characteristic of substances. If two substances are the same, they must have the same density.
Considering the information presented here, the cube and the marble are different materials hence they have different densities.
Learn more: https://brainly.com/question/9196460
What are the stages of bee development (eggs,larvae,pupae)
Answers
The stages of bee development are egg, larva, pupa, and adult. Eggs hatch into larvae, which then transform into pupae. Finally, adult bees emerge and undergo further maturation.
The stages of bee development are:
1. Egg: The bee life cycle begins when the queen bee lays an egg in a honeycomb cell.
2. Larva: The egg hatches into a larva, which is a legless, grub-like creature. The larva is fed a special diet called royal jelly, which stimulates its growth.
3. Pupa: The larva undergoes metamorphosis and transforms into a pupa. Inside the sealed cell, the pupa undergoes various changes, developing into an adult bee.
4. Adult Bee: After completing the pupal stage, the fully developed adult bee emerges from the cell. The bee then undergoes further maturation, such as its exoskeleton hardening, wings expanding, and adult coloration appearing.
It's important to note that there are three castes of bees: queen, worker, and drone. The development process for each caste is similar, but the diet and size of the cells they are raised in differ, leading to their distinct roles within the colony.
For more questions on bee development:
https://brainly.com/question/28696131
#SPJ8
there are very few minerals that are useful for humans begins
.true
.false
Answers
Answer:
false
Explanation:
because there are many minerals such as gold
what is geological substratum
Answers
Answer:
Explanation:
Geological substratum refers to the solid rock or layer of Earth's crust that lies beneath the soil, sediment, or other surface materials.
Hope it helps!!
Plz help don’t know which one.
Answers
Answer:
I think it is "serve a different function"
Explanation:
A student is writing a description of how cyclic factors can combine to create extreme seasons. Complete the student's description. Cyclic factors can greatly influence Earth's climate. For example, more extreme seasons could be caused by (blank) tilt in Earth's rotational axis. Similarly, summer occurring at (blank) along a (blank) eccentric orbit path would make for an extreme summer.
Answers
The cyclic factors that can combine to create extreme seasons are called Milankovitch cycles, and involve several factors:
• Axial tilt or obliquity (how inclined or tilted is the Earth's rotational axis)
,• Axial precession (direction of the Eart's rotation)
,• Apsidal precession (the orientation of the Earth's orbit)
,• Orbital eccentricity (how elongated is the orbit)
,• Orbital inclination
We see that the sentence mentions them, let's use the options provided (perihelion, more, an increased) to complete the sentence.
For example, more extreme seasons could be caused by an increased tilt on Earth's rotational axis. Similarly, summer occurring at perihelion (closest to the sun) along a more eccentric orbit path would make for an extreme summer.
Drag the tiles to the correct boxes to complete the pairs. Math the modes of transport to the molecules
carrier proteins
osmosis
active transport
simple diffusion
Answers
The mode of transport and the molecules are as follows;
Carrier proteins → Charged amino acid
Osmosis → Water molecule
Active transport → Calcium
Simple diffusion → Oxygen
Exocytosis → Protein from the Golgi apparatus
What are carrier proteins?Carrier proteins play a vital role in moving ions, small molecules, or macromolecules across a biological membrane.
Charged amino acids require these proteins for transport as they cannot pass through the lipid bilayer unaided due to their charge.
The above answer is based on the full question below;
Match the modes of transport to the molecules.
carrier proteins
osmosis
active transport
simple diffusion
exocytosis
oxygen
water molecule
charged amino acid
calcium
moves from low concentration to high concentration
protein from the Golgi apparatus
Find more exercises on carrier protein;
https://brainly.com/question/30627641
#SPJ1
A couple would like to know what the probability is that out of five children, three will be girls. This is solved using which of the following?
A) Product rule
B) Sum rule
C) Chi-square test
D) Random sampling error
E) Binomial expansion
Answers
This is solved by using binomial expansion. Therefore, option D is correct.
What is probability?A probability is a numerical representation of the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities. Information about the possibility that something will happen is provided by probability.
A couple would like to know what the probability is that out of five children, three will be girls. This is solved by using binomial expansion. Therefore, option D is correct.
Learn more about probability, here:
https://brainly.com/question/30034780
#SPJ1
State one substance that leaves the blood as it flows through the tissues of the small intestine.
Answers
Answer:
Superior mesenteric artery.
The primary source of energy for the body is a form of sugar called glucose. It travels to cells all throughout the body after being absorbed into circulation from the small intestine.
Other chemicals that enter the circulation through the small intestine include the following:
Proteins' building components are amino acids.
The lipids' building components are fatty acids.
minerals and vitamins
Water
In an adult, the small intestine is a muscular tube that is roughly 20 feet long. It is situated in the belly, above the large intestine, and below the stomach. The bulk of digestion and nutritional absorption from meals occurs in the small intestine.
To know more about glucose:
https://brainly.com/question/13555266
#SPJ2
23. Which of the following explains nitrogen fixation. *
Answers
Answer:
Nitrogen fixation is the process by which atmospheric nitrogen is converted by either a nature or an industrial mean to a form of nitrogen such as ammonia.
Lesson 7 Student Activity Sheets: How do bacteria get killed?
Answers
Answer:
One popular method of killing bacteria using moist heat is boiling. Many of us boil water for 15-20 minutes before drinking. We must remember that boiling can kill the bacteria but cannot kill all types of bacterial spores. Energy transmitted through space in a variety of forms is generally called radiation.
Explanation:
In the Laboratory bacteria can be killed by preventing them from replicating themselves with the use of ; Bleach or White diluted vinegar during cleaning.
Bacteria can be found almost everywhere like on worktables, food and water, in humans and animals as well. and some of the ways of killing bacteria is by subjecting contaminated substance to moist heat conditions ( boiling ) or the the use of bleach during cleaning.
Bacteria found in humans get killed by the use of antibiotics that either kill the bacteria or stops its replication.
Hence we can conclude that In the Laboratory bacteria get killed by preventing them from replicating themselves with the use of Bleach or White diluted vinegar during cleaning.
Learn more : https://brainly.com/question/13588500
Please answer (will give brainiest)
Answers
Which of the following statements about renewable and non-renewable energy sources is true?
In the United States, about 20% of energy comes from renewable energy.
Coal produces 39% of the country's heating and transportation fuel.
Much of the energy used to power day-to-day activities is in the form of chemical energy.
Non-renewable energy can be replenished in a relatively short amount of time.
Answers
Answer:
Option 1
Explanation:
Option 1
In the United States, about 20% of energy comes from renewable energy.
In the United States, about 20% of energy comes from renewable energy.
Explanation:The correct statement about renewable and non-renewable energy sources is that in the United States, about 20% of energy comes from renewable energy.
Coal actually produces 39% of the country's electricity, not heating and transportation fuel.
Much of the energy used to power day-to-day activities is in the form of electrical energy, not chemical energy.
Non-renewable energy sources cannot be replenished in a relatively short amount of time.
Learn more about Renewable and non-renewable energy sources here:https://brainly.com/question/34874238
#SPJ2
PLZZZZ HELP!!!! I NEED ANSWER FAST!!!
Answers
Answer:
1. D
2. A
3. B
4. C
Explanation
why are summer days longer than winter days on earth ?
Answers
Answer:
3. The region of Earth => away from the sun.
Explanation:
In the summer months, the northern half of the Earth, where we live, tilts towards the Sun. The seasons are caused as the Earth, tilted on its axis, travels in a loop around the Sun each year. Summer happens in the hemisphere tilted towards the Sun, and winter happens in the hemisphere tilted away from the Sun. This means we get more sunlight, making the days longer.
A crane has a sharp and pointed beak while the duck has a flat beak.Explain why
Answers
Answer:
The crane has a sharp and pointed beak adapted for catching and grasping prey. The sharp beak allows the crane to effectively stab and pierce its prey, such as fish, frogs, or small animals. The pointed shape helps the crane to accurately target its prey and secure a firm grip.
On the other hand, the duck has a flat beak, which is better suited for its specific feeding habits. Ducks are primarily filter feeders, and their flat beak enables them to sift through water or mud to collect small organisms, insects, and plants. The flat beak acts like a sieve, allowing the duck to strain out food particles while retaining water.
The difference in beak shape between the crane and the duck reflects their distinct feeding strategies and ecological roles. Each species has evolved its beak shape to optimize its ability to capture and consume the specific types of food sources available in their respective habitats.