Answers
Simple eukaryotic organisms known as Protists are not classified as either plants, animals, or fungus. Although they are often unicellular, Protists can also be found as a colony of cells.
Why is it difficult to classify protists?Because the kingdom protists includes species with characteristics similar to those of plants, mammals, and fungi, it lacks a clearly defined boundary and establishes a connection with these three other kingdoms. This kingdom is diverse. Therefore, it is challenging for biologists to reach consensus on a protist taxonomy.The absence of other eukaryotes means that protists do not constitute a natural group, or clade, even though it seems likely that they all descended from a common ancestor.Sequence analysis have uncovered novel genetic links among these eukaryotes, disassembling the Kingdom Protista. Furthermore, rather than sharing a recent common ancestor, protists with identical morphological characteristics may have evolved homologous structures in response to similar selective forces.Protist classification is difficult in part because of a phenomena known as convergent evolution.To learn more about Protists refer :
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Related Questions
Which of the following statements is FALSE?
The first electron shell of an atom is filled when it contains eight electrons.
The number of electrons in the outer shell of an atom determines the atom's chemical properties.
Ο Ο Ο Ο
An oxygen atom has six electrons in its valence (outer) shell; therefore, it is considered unstable
Inert atoms do not readily participate in chemical reactions
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The first election shell can only hold two and all the other ones can hold eight
Helppppppppppppp
......................................
Answers
Answer:
A triangleeeeeeeeeeeeeeeeeeeeeeeee
22. In a study of heart rate in ocean-diving birds, researchers
harnessed 10 randomly sampled, wild-caught cormorants
to a laboratory contraption that monitored vital signs.
Each cormorant was subjected to six artificial “dives" over
the following week (one dive per day). A dive consisted of
rapidly immersing the head of the bird in water by tipping
the harness. In this way, a sample of 60 measurements of
heart rate in diving birds was obtained. Do these 60
measurements represent a random sample? Why or why not?
not?
Answers
According to the type of samples that were taken from the experiment, it is inferred that the 60 selected samples represent a random sample because they were randomly selected.
What is a sample?A sample is a term that refers to a subset of data selected from a total of data obtained in an investigation.
For example, when a researcher wants to study the population of a city, it is a difficult task to study all the people, so he may study a sample of people to draw a conclusion.According to the above, if the researchers take a sample of 60 recordings of the heart rate of the diving birds, it can be considered a valid sample because it is random and will allow conclusions to be drawn regarding the experiment.
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e.
A/An
star system is made of two stars.
A/An
star system is made of no more than a few thousand stars.
A/An
star system is made of more than a million stars.
Answers
intracellular or extracellular triggers can initiate apoptosis signals. during apoptosis, a message prompts a cascade of proteins. part of programmed cell death involves the fragmentation of dna and the deconstruction of organelles and other cytoplasmic components. apoptosis shields adjacent cells from potential damage. which of the following is an example of apoptosis that aids in embryonic development?
Answers
Apoptosis occurs in soft tissue cells between the fingers and toes during development to separate the digits from each other. The formation of heart loops is also dependent on the apoptosis process.
intracellular or extracellular triggers can initiate apoptosis signals. during apoptosis, a message prompts a cascade of proteins. part of programmed cell death involves the fragmentation of dna and the deconstruction of organelles and other cytoplasmic components. apoptosis shields adjacent cells from potential damage.
In his article "The Apoptotic Oocyte," Gary Wessel of Brown University in Providence, Rhode Island, discusses the role of apoptosis in human females. Apoptosis occurs in human female oocytes during development and after birth. Scientists estimate that seven to eight million oocytes are formed in the fetus, which are reduced to about 100,000 oocytes at birth and then to a few hundred when menopause begins.
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Which of the following is an invasive species in Texas?
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In which system does kidney disease originate?
Answers
Answer:
excretory
Explanation:
others make no sense
write the phenotype and genotype
Answers
Explanation:
The concepts of phenotype and genotype are related to genetics.
The phenotype is generally called the external appearance of the living thing, which is formed by the genetic information and environmental effects.
Genotype is the genetic information that an organism carries in its DNA.
For example; Character A is the favorite black color. a is the blue color character.
While the Aa display shows the individual with black eyes in the phenotype, the genotype is expressed as heterozygous dominant black eyes.
A life-cycle assessment of a product accounts for the environmental impact from which of these steps? O a. using the product Ob making and distributing the product c. disposing of the product O d. All of these are correct
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A life-cycle assessment of a product accounts for the environmental impact from these steps option D: All of these are correct
The relationships between various environmental parameters are better understood using a product life-cycle perspective. For instance, altering a product's formulation to contain less water could result in increased processing, which would lead to an increase in greenhouse gas emissions.
An evaluation of a product's life cycle takes into consideration its effect on the environment.
Using the itemproducing and dispersing the productGetting rid of the productIn order to improve resource usage efficiency and lower liabilities, life-cycle assessment (LCA) evaluates the effects that a product has on the environment over the course of its entire existence..
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What happens to the actin and myosin during a muscle contraction?
Answers
Answer:
Once the myosin-binding sites are exposed, and if sufficient ATP is present, myosin binds to actin to begin cross-bridge cycling. Then the sarcomere shortens and the muscle contracts. In the absence of calcium, this binding does not occur, so the presence of free calcium is an important regulator of muscle contraction.
Arrange the events in photosynthesis in order, with the first event at the top and the last event at the bottom.
Answers
Photosynthesis involves Light-dependent reactions, which are the noncyclic pathway, and the light-independent reactions, known as Calvin cycle. The sequence of events is described below.
NOTE: Since I could not find the complete question, I will provide a complete explanation of how photosynthesis occurs, so you will be able to arrange the events in your statement in the correct order.
What is the photosynthetic sequence of events?Photosynthesis involves two stages: light-dependent and light-independent reactions.
LIGHT-DEPENDENT REACTION
It occurs in the thylakoids of chloroplasts. Involves the noncyclic pathway which is a flow of electrons along a chain located in the thylakoid membrane.
Photosynthetic pigments are in charge of light absorption. When sunlight reaches the pigments, electrons get excited and move along the electron transport chain.
During these reactions, oxygen is released, while ATP and NADPH are produced. Both of them are used during light-independent reactions.
LIGHT-INDEPENDENT REACTION
Light-independent reaction is known as the Calvin cycle, and it takes place in the stroma.
During the Calvin cycle, sugars or carbohydrates are synthesized.
When carbon dioxide, CO₂, enters the leaves through stomas, it diffuses to the chloroplast stroma.
Carbon atoms fixate, meaning that they incorporate into organic molecules. These molecules are used to produce 3-C sugars.
The whole process is impulsed by ATP and NADPH coming from light-dependent reactions.
SEQUENCE OF EVENTS
⇒ THYLAKOID MEMBRANE: The steps of light-dependent reactions are the followings,
1) Luminous energy is trapped by chlorophyll in Photosystem II.
2) When the pigment molecules absorb light, electrons provided by water molecules get to a higher energy level.
3) The excited electrons go through the electron transport chain from Photosystem II to a less energetic level in photosystem I.
4) When the excited electrons leave photosystem II, they are replaced by new electrons extracted from the water molecules.
5) The absorbed luminous energy moves the electrons from the photosystem I to another electron acceptor, from where they get transported again and used to produce NADPH molecules.
6) When electrons leave Photosystem I, they are replaced by new electrons coming from photosystem II.
7) When the water molecule breaks down, hydrogen ions remain in the thylakoid lumen, from where they are pumped to the stroma by the ATP synthase.
8) The released energy is used to produce ATP molecules.
9) Hydrogen ions go back from the stroma to the thylakoid compartment.
⇒ STROMA: The steps of light-independent reactions are the followings,
1) During the carbon fixation phase, a CO₂ molecule combinates with a ribulose-1,5-bisphosphate (5-C molecule) to form 6-C molecules, which will divide into two 3-phosphoglycerate molecules, 3-PGA (3-C molecules).
CO₂ + ribulose-1,5-bisphosphate ⟶ 6-C molecule ⟶ 2 3-PGA
2) During the reduction phase, ATP and NADPH are used to produce the sugar molecule glyceraldehyde-3-phosphate (G3P) from 3-PGA molecules.
NADPH donates its electrons to turn 3-PGA into glyceraldehyde 3-phosphate, G3P.
3-PGA + ATP + NADPH ⟶ G3P + ADP + NADP⁺
3) During the regeneration phase,
some glyceraldehyde 3-phosphate molecules leave the cycle and go to the cytosol to form glucose.Other G3P get recycled to regenerate the RuBP acceptor. This last reaction needs ATP and a series of other reactions.When three CO₂ enter the cycle, 6 G3P are produced. One of them leaves the cycle, and the remaining five are recycled and generate three RuBP.
⇒ CYTOSOL
1) Once in the cytosol, glyceraldehyde 3-phosphate molecules are used to form glucose and fructose.
2) These two molecules are the monosaccharides that form sucrose.
3) Once sucrose is formed, it is transported from the photosynthetic tissues to different parts of the plant by the phloem.
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explain the importance of all 3 biomolecules in general and for making ATP.
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The three biomolecules that are used for making ATP are Lipids (fats) , Carbohydrates and Proteins
The biomolecules also known as biological molecules serve a wide range of activities and they vary in shape and their size . It is also considered essential to life because they help organisms develop, survive, and propagate. The biomolecules interact with one another which play a role in the development of organisms .
There are four types of biological molecules which are carbohydrates which is used as an energy source , lipids which is used for storage and support , proteins is used for supporting essential vital functions and amino acids are the developing elements that make up proteins and nucleic acids for storing genetic information .
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How can we reduce the Disadvantages of Human-made Materials?
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Determine whether each occurrence is a result of short-term or long-term change. Sort each one to the correct
category.
speciation
Short-Term Change
Long-Term Change
adaptation
loss of habitat
extinction
forced migration
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Answer:
Adaptation and extinction occur as a result of long term change whereas loss of habitat and forced migration results of short term change.
Explanation:
Adaptation and extinction occur as a result of long term change in the environment whereas loss of habitat and forced migration is a result of short term change in the environment. Adaptation occurs in the organism as a result of climate change because when the climate change occurs some organisms are extinct due to intolerance of the change environment whereas some organisms adapt the environment by making some changes its physical structure in order to survive. Loss of habitat and forced migration occurs due to sudden big change in the environmental conditions such as flooding and volcanic eruptions.
Answer:
Explanation:
because
Just off the Oregon coast, a fishing boat filled with eager tourists pulled out of the harbor on a beautiful, sunny, cool day. The tide was unusually low as the boat was crossing the bar. This was the third boat to go out that morning, and the first two encountered no problems. This boat, however, was hit broadside by a wave and capsized. About half of the passengers
were wearing life jackets. Some of the passengers were trapped below deck in the overturned boat and attempted to break through the glass barriers to swim to the surface. Hypothermia set in within minutes, and 10 of the 17 passengers drowned. Two persons were not recovered.
Case Study Questions
1. Describe the physiological effects of hypothermia.
2. What preventative measures could the tourists have taken?
3. What preventative measures could the captain of the boat have taken?
Answers
Answer:
Explanation:
well when you get hypothermia you are freezing your blood so it puts you in a state of shock.
they should have been wearing warmer clothes and life jackets
they should have gone around the bar
Darwinian Gradualism can be generalized to: The change in a population's phenotype (by genetic change) over time (many, many years of applied geologic time) allowing for the gradual formation of new species from an ancestor group
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The statement 'Darwinian Gradualism can be generalized to the change in a population's phenotype over many years allowing for the gradual formation of new species from an ancestor group' is true.
What is Darwinian Gradualism and which is its importance in evolution?Darwinian Gradualism refers to changes that occur over many generations that lead to adaptation by natural selection, which is critical for the evolution of traits in nature.
Therefore, with this data, we can see that Darwinian Gradualism can explain minor differences in the phenotypes of the individual in a species.
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In primary tuberculosis, lung lesions called _______________ form in the lung and are composed of bacteria in enlarged macrophages, fibroblasts, lymphocytes, and neutrophils.
a. fibroids
b. tubercles
c. caseous lesions
d. gummas
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Tubercles
Tubercles are one of the primary tuberculosis lesions (TB) and are formed in the lungs due to infection with the bacteria Mycobacterium tuberculosis. They are composed of bacteria and cells, including enlarged macrophages, fibroblasts, lymphocytes, and neutrophils. TB tubercles are typically small, round lesions found in the lungs' alveoli (air sacs). As the infection progresses, the number of tubercles increases, and they can become larger, eventually coalescing to form larger lesions.
The tubercles are the site of bacterial growth and replication, and when the bacteria are killed, the tubercles are filled with a cheesy material called caseous necrosis. This material contains dead bacteria and cell debris and can also contain fluid, dead cells, and inflammatory cells. In some cases, the tubercles may become calcified.
Once established, the tubercles can cause inflammation and scarring of the lung tissue, leading to the development of pneumonia and other serious lung conditions. In severe cases, the tubercles can spread to other body parts, leading to systemic TB or even death. Treatment of TB involves the use of antibiotics to kill the bacteria, as well as medications to reduce inflammation and scarring.
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Laetiporus sulphureus also known as chicken of the woods , is a multicellular organism that is heteroph
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Laetiporus sulphureus, or chicken of the woods, is a multicellular organism in the Fungi kingdom. It obtains its nutrition as a heterotroph by decomposing dead wood. It is known for its bright color and spongy texture when cooked.
Laetiporus sulphureus, also known as chicken of the woods, is a multicellular organism that belongs to the kingdom Fungi. It is a heterotroph, meaning it obtains its nutrition by consuming organic matter. Chicken of the woods is a saprophytic fungus, which means it decomposes dead wood and obtains nutrients from it. It is commonly found growing on the trunks of trees, particularly oak and cherry trees.Chicken of the woods is characterized by its vibrant orange or yellow color and its bracket-shaped fruiting bodies. These fruiting bodies consist of layers of spore-producing tubes underneath. The mushroom has a soft and spongy texture when cooked, making it a popular ingredient in various culinary dishes.For more questions on Laetiporus sulphureus
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Forested floodplain wetlands benefit from periodic flooding from rivers. When floodwaters spill into the wetland, they bring water and nutrients and leave both behind. But humans have often cut off floodplains from rivers by building roads, levees, berms, etc. Think about what would happen if a river could no longer flood into these areas. How would the resulting increased amount of water and nutrients in the river affect soils, hydrology, and life downstream?
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The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.
If a river can no longer flood into forested floodplain wetlands due to human interventions, it would have significant consequences for the downstream areas in terms of soils, hydrology, and life.Without periodic flooding, the increased amount of water and nutrients in the river would not be able to disperse and be deposited in the floodplain wetlands. As a result, downstream soils would experience a decrease in nutrient inputs, leading to decreased fertility and altered composition. The absence of regular flooding would disrupt the natural hydrological cycle, reducing the recharge of groundwater and altering the flow patterns in the river system. This could result in decreased water availability, increased erosion, and changes in the overall ecosystem dynamics downstream.The disruption of nutrient flows and hydrological patterns would also have a significant impact on the life forms downstream. Aquatic plants, fish, and other organisms that depend on floodplain wetlands for breeding, feeding, and shelter would face habitat loss and reduced food availability. This, in turn, could disrupt the food chain and impact the abundance and diversity of aquatic and terrestrial species in the downstream areas.The absence of flooding from rivers into forested floodplain wetlands would lead to adverse effects on soils, hydrology, and the overall biodiversity downstream, emphasizing the importance of maintaining the natural connection between rivers and floodplains for the health and functioning of these ecosystems.For more such questions on flooding
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Describe an investigation using flashlights that are all the same?
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One investigation using flashlights that are all the same is the Flashlight Investigation which is part of the Light and Shadow Workshop.
This workshop was developed using basic tools such as mirrors, lenses, and flashlights as the basis for explorations that can help build an intuitive understanding of how light works.
The activities are divided into five sessions, although the investigations can be extended well beyond this format. The first session, Flashlight Investigation is outlined here, the other sessions are outlined in separate Instructables.
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what is the analogy between the vacuole and a school?
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Answer:
The vacuoles is like the cabinets in the school used to store items. where we release all of our energy. Cytoplasm is like the hallways of the school.
Is this the right answer?
Answers
Answer:
Yes!
Explanation:
The sperm does ferbilaise the egg. So its Mendel and Gene
What is the major next step following
the observation stage?
A. interpreting data
B. asking questions about the observation
C. creating an experiment
D. writing a theory
Answers
Answer:
asking questions about the observation
If Earth was not tilted, there would be no
A. seasonal cycle
B. Hadley cell
C. diurnal cycle
D. albedo
Answers
The main cause of the seasons is this. The Northern Hemisphere has warm weather when the Earth is tilted toward the sun, and cool weather when the Earth is tilted away from the sun. Thus, option A is correct.
What is Earth seasonal cycle?The Earth's axis is currently inclined 23.5 degrees. The Earth rotates on its axis at a fixed tilt as it orbits the Sun. The Northern and Southern Hemispheres are tilted away from the Sun.
At different times of the year as a result of this angle. A hemisphere experiences winter and longer nights as it is tilted away from the Sun.
Therefore, there would be no seasonal cycle If Earth was not tilted.
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In the United States about 16% of the population is Rh negative. The allele for Rh negative is recessive to the allele for Rh positive. If the student population of a high school in the U.S. is 3,000, how many students would you expect for each of the three possible genotypes?
In certain African countries, 4% of newborn babies have sickle-cell anemia, which is a recessive trait. Out of a random population of 10,000 newborn babies, how many would you expect for each of the three possible genotypes?
Answers
In the high school population of 3,000 students, 2,117 students were homozygous Rh positive (AA), 806 students were heterozygous (Aa), and 77 students were homozygous Rh negative (aa).
Given:
Population size: 3,000 students
Rh negative population frequency: 16% (0.16)
From the Hardy-Weinberg equation.
p: frequency of the dominant Rh positive allele
q: frequency of the recessive Rh negative allele
We know that p + q = 1
p = 1 - q = 1 - 0.16 = 0.84.
The expected frequencies of the three genotypes are:
Homozygous Rh positive (AA): p² = (0.84)² = 0.7056
Heterozygous (Aa): 2pq = 2 ₓ 0.84 ₓ 0.16 = 0.2688
Homozygous Rh negative (aa): q² = (0.16)² = 0.0256
Homozygous Rh-positive: 0.7056 ₓ 3,000 = 2,116.8 (approximately 2,117 students)
Heterozygous: 0.2688 ₓ 3,000 = 806.4
Homozygous Rh negative: 0.0256 ₓ 3,000 = 76.8
Sickle-Cell Anemia in a Newborn Population:
Given:
Population size: 10,000 newborn babies
Sickle-cell anemia frequency: 4% (0.04)
p: frequency of the dominant normal allele
q: frequency of the recessive sickle-cell allele
p + q = 1
p = 1 - q = 1 - 0.04 = 0.96.
The expected frequencies of the three genotypes are:
Homozygous normal (AA): p²= (0.96)² = 0.9216
Heterozygous (Aa): 2pq = 2 ₓ 0.96 ₓ 0.04 = 0.0768
Homozygous sickle-cell (aa): q² = (0.04)² = 0.0016
Homozygous normal: 0.9216 ₓ 10,000 = 9,216
Heterozygous: 0.0768 ₓ 10,000 = 768
Homozygous sickle-cell: 0.0016 × 10,000 = 16
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1. Given the following DNA sequence, determine the correct order of amino acids.
GGCATGAGGTAA
2. For this mutated sequence:
• Determine the correct order of amino acids,
• How the two strings of amino acids will differ.
• also circle the mutation
GGAATGAGGTAA
Which of these is the change.
No Change-
1 Amino acid changed-
Premature stop signal -
No stop signal-
1 amino acid added/deleted -
All the amino acids changed after the point of mutation-
Answers
Answer: 1- CCGT ACT CCATT
2- CCTTACTCCATT
Explanation:
A-----T
C-----G
G-----C
T-----A
How do nucleotides provide nucleic acids with specific codes?
HINT: Think about the structure of nucleotides and the different types of bases found in them.
Answers
Answer:
Nucleotides have specific sequences. When these codes/orders of nucleotides are translated, they code for amino acids, which in turn correspond to specific proteins being made. These proteins are responsible for carrying out various bodily functions.
Who uses the word animal science
Answers
Answer:
scientists
Explanation:
Answer:
people who use the word animal science
Explanation: scientists
Tascha is on medication that increases the pH if the stomach and make it alkaline. What is the effect of this medication
Answers
Answer:
A. The medication hampers bile production.
Explanation:
Hope this helps :)
Does following a schedule
Appeal to you, or
Cramp you?
Answers
Following a schedule does not cramp me, rather it appeals to me.
Why schedules appeal to meA schedule is a plan that specifies the time and duration of activities, events, or tasks that need to be accomplished. It can be in the form of a calendar, planner, or list of tasks to be done at specific times.
Several reasons make having a schedule important include:
Managing time efficiently and effectively is vital for success. One way to do this is by prioritizing tasks and allocating the right amount of time to complete them. This helps in avoiding procrastination and ensures a timely completion. Create a schedule and stick to it to make the most of your time.By preventing individuals from taking on too many tasks simultaneously, a schedule is integral to optimizing productivity. A schedule ensures that tasks are completed promptly and efficiently.By creating order and control, a schedule can greatly reduce feelings of stress. The stress of last-minute rushes and deadlines can be avoided with the aid of a schedule.Learn more on schedules here https://brainly.com/question/31388638
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