gene mutations can be caused by many things. these mutations are biologically important because they
Answers
Answer: Can result in a new variety of gene combinations in the species.
Explanation:
Related Questions
In the early days of germ theory, contagious diseases were thought to be caused only by fungi or bacteria. In the 1890s, Dmitri Ivanovsky filtered extracts from diseased tobacco plants and discovered that the disease could be transmitted to new plants through the filtrate. He hypothesized that something smaller than bacteria or fungi was responsible for the transmission of the disease. Which best explains how Ivanovskis work led to a change in the germ theory
Answers
Answer:
He tried to promote his hypothesis as a law.
Explanation:
i got it roight
Answer:
A
Explanation:
correct on edg
What occurs when a light wave enters a substance and its speed suddenly slows down?
Answers
Answer:
That's due to the fact that light scatters off the molecules that make-up different materials. The photons themselves do not slow down.
Explanation:
have a good day
Answer: it can be reflected or refracted.
Explanation:
Read God's rules of health and sanitation for Israel in
Lev. 11:1-8 and Deut. 23:12-14. How might these
rules have protected His people from diseases such as
those caused by parasitic worms? Relate your answer
to the mode of transmission of many parasitic worms.
Answers
Answer:
It is transmitted in the body through contaminated food.
Explanation:
These rules of God's about health and sanitation have protected Israeli people from diseases which was caused by parasitic worms because these parasitic worms entered the body by not washing hands and contaminated food. These parasitic worms are present on the skin as well as in the food so the person can save itself from these parasitic worms if he or she wash hands properly before eating the meal and eat clean, fresh and healthy food.
Describe how Stella’s view of these plant cells and their parts changed as she transitioned through the three levels of magnification. Be sure to identify at least one cell structure or part of the leaf cells in your description.
Answers
Answer:
From lower to higher level of magnification, the stella's view about plant cells.
Explanation:
At lower magnification, the structure of plant cell is not clear by stella but with the increase of magnification, the cell structure becomes enlarge and clearly seen different structures of plant cell by the individual. The boundary of plant cell is known as epidermis. The upper boundary of plant cell is upper epidermis and the lower boundary of plant cell is lower epidermis.
Part C
This simulation shows only the changes in energy that cause the motion of the skateboarder. What energy
transformations are going on within the skateboarder's body during this process?
Answers
As the skateboarder moves, several energy transformations take place within their body. Some of the energy transformations include:
1. Chemical energy to kinetic energy: When the skateboarder pushes off the ground, the energy stored in the chemical bonds of their muscles is converted into kinetic energy, which is responsible for their motion.
2. Kinetic energy to gravitational potential energy: As the skateboarder moves up a ramp, their kinetic energy is converted into gravitational potential energy.
3. Gravitational potential energy to kinetic energy: When the skateboarder moves down the ramp, the gravitational potential energy is converted back into kinetic energy.
4. Kinetic energy to thermal energy: As the skateboarder moves, they also experience frictional forces which convert some of their kinetic energy into thermal energy.
5. Chemical energy to thermal energy: The continuous movement of the skateboarder requires the energy stored in their muscles to be converted into thermal energy, which is released as heat.
I hope that the assistance I provided was helpful.
The motion of the skateboarder is powered by energy transformations that occur within their body. As the skateboarder moves, their body converts stored chemical energy (from food) into kinetic energy, which is the energy of motion. This conversion happens through a series of complex biochemical processes that occur within the skateboarder's muscles.
When the skateboarder pushes off the ground, their leg muscles contract, converting chemical energy stored in the form of ATP (adenosine triphosphate) into kinetic energy as the legs move and the skateboarder accelerates. As the skateboarder continues to move, the muscles in their body work together to maintain balance and control, converting chemical energy into kinetic energy and potential energy as the skateboarder jumps, turns, and performs tricks.
Additionally, the skateboarder's body also experiences other forms of energy transformation during this process. For example, as the skateboarder moves, their body generates heat through metabolic processes, which is a form of thermal energy. The skateboarder also loses energy through friction with the ground and air resistance, which is converted into heat and sound energy.
In summary, the motion of the skateboarder is powered by a series of complex energy transformations that occur within their body. These transformations involve the conversion of stored chemical energy into kinetic and potential energy, as well as the generation of heat and sound energy through friction and air resistance.
What major changes occur in your reproductive system during the puberty stage?
Answers
During the puberty stage, major changes occur in the reproductive system of both males and females. These changes are triggered by the release of hormones such as estrogen and testosterone. In females, the ovaries start to release eggs, and the uterus and fallopian tubes begin to develop.
Additionally, there is an increase in the production of estrogen, which leads to the development of secondary sexual characteristics such as the growth of breasts and the onset of menstruation. In males, the testes start to produce sperm, and there is an increase in the production of testosterone, which leads to the growth of facial hair, pubic hair, and the deepening of the voice. Overall, the puberty stage marks a significant period of physical and hormonal changes in the reproductive system.
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A population of birds live on an island where seeds are their primary food source. Birds with smaller beaks can eat small seeds more easily and birds with larger beaks can eat large seeds more easily. A fungus destroys the plants that make large seeds, leaving only the small seeds as food. Which type of natural selection will most likely occur? Choose 1 answer: Choose 1 answer: (Choice A) A Stabilizing selection (Choice B) B Artificial selection (Choice C) C Disruptive selection (Choice D) D Directional selection
Answers
Answer:
I think the answer for your question is the letter c
help ill never be done with school if i dont do this
Answers
Can you help me which arrow is pointing near Sahel,the semi arid region bordering the Sahara desert?
Answers
The arrow pointing near Sahel, the semi-arid region bordering the Sahara desert is the arrow labeled 1.
Where is the Sahel region?The Sahel region is a semi-arid transitional zone that lies immediately south of the Sahara desert and extends across the northern edge of the African continent.
On the African map (shown in the image), the northern side of the continent is generally where the Sahara desert and the Sahel region are located. The Sahel runs from the Atlantic Ocean in the west, through Mauritania, Mali, Niger, Chad, Sudan, and Eritrea, before ending at the Red Sea in the east.
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Which law represents a balanced chemical equation?
Answers
Answer:
Law of the conservation of mass
Explanation:
Balancing equations demonstrates the fundamental law of the conservation of mass. It shows that you cannot create or destroy mass in a chemical reaction, so the mass stays constant.
Why can't blue whales get cancer?
Answers
Answer:
Because it is so big the mutated cell is harmless to them because of teir cell count
Explanation:
Answer:
Even though larger animals like elephants and blue whales have up to 100 billion more cells than humans in their bodies — and therefore many more chances for harmful mutations to develop — they are much more immune to cancer.
Explanation:
What major factors play a role in global warming? decrease in human activity and normal climate conditions natural factors and human activity natural factors and normal climate conditions decrease in human activity and natural factors
Answers
Answer:
natural factors and human activity
Explanation:
Global warming is the gradual increase in the earth's atmospheric temperature. It is a cause of concern for every country as it affects the whole planet. Global warming is caused by the production and release of Greenhouse gases into the atmosphere.
Greenhouse gases like C02, methane, nitrous oxide etc. are gases that have the ability to trap heat energy, hence, the increased accumulation of these gases in the atmosphere leads to a rise in global temperature.
The emission of greenhouse gases, which in turn induces global warming effect, is majorly contributed by natural factors and human activities. Natural occurrences like volcanic eruption etc release these gases into the atmosphere. Also, on a large part, the emission of CO2 caused by the burning of fossil fuels is the major problem. This burning of fossil fuels is carried out by humans. Coals, petroleum and other non-renewable source of energy are used daily, which creates havoc to the environment.
Therefore, the contribution of natural factors and human activities play a huge role in global warming.
Answer:
B
Explanation:
A. 25%
B. 50%
C. 75%
D. 100%
Answers
Answer:
B. 50%
Explanation:
The yellow trait is dominant (uppercase Y), so the heterozygous pairs (Yy) as well as the homozygous dominant pairs (YY) would be yellow. There are 2 pairs of Yy there for 50% of the offspring would have a yellow pod.
Answer:
A.)25%
Explanation:
hope i helped
tooth decay is caused by bacteria, such as s. mutans, that can attach to the surface of a tooth. how are these bacteria able to attach to the surface and cause infection? what is the role of sugar in this process?
Answers
The main dietary component in the growth of dental decay caries is free sugars. When oral bacteria break down glucose to create acid, which demineralizes the hard structures of the teeth, dental caries is created (enamel and dentine).
As part of its metabolism, the anaerobic bacteria S. mutans is known to create lactic acid. Second, S. mutans can adhere to tooth surfaces when there is sucrose present because it produces glucans, a polymer that helps to attach the bacteria to the tooth. Dental decay is caused by acids produced by bacteria that digest sucrose and other dietary carbohydrates, which dissolve tooth mineral, chiefly hydroxyapatite, Ca10 (P04)6(0H)2. These microorganisms are found in dental decay plaque, a buildup of bacteria on the tooth's surface.
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Explain how Direct Harvesting has contributed towards the loss of
biodiversity.
Answers
abnormalities in the number of x chromosomes tends to have milder pehnotypic effects than the same abnormalities in autosomes because of
Answers
Abnormalities in the number of X chromosomes tend to have milder phenotypic effects than the same abnormalities in autosomes because of the process of X inactivation.
X inactivation is the process by which one of the two X chromosomes in females is randomly silenced during early embryonic development. This ensures that females only express the same amount of X-linked genes as males. When an abnormality occurs in the number of X chromosomes, the body has a mechanism to compensate for the extra or missing genetic material.
In females with an extra X chromosome, the body will randomly silence one of the X chromosomes, resulting in a normal level of X-linked gene expression. Similarly, in males with only one X chromosome, the body will upregulate the expression of X-linked genes to compensate for the missing genetic material.
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The complete question is:
Fill in the blank:
Abnormalities in the number of x chromosomes tend to have milder phenotypic effects than the same abnormalities in autosomes because of ____________
Why do you need a messenger like mRNA to get a protein made from a DNA “recipe”?
Answers
Answer:
long story short, RNA is necessary for your body to make the proteins that give you structure, let you move (muscles), send signals (hormones), have chemical reactions (enzymes), fight infections (antibodies) and lots of other things that make life possible.
An endangered species has a lek mating system. Twelve males have been identified, three of which are known to gain 100% of copulations from ten females that visit the lek. All ten females laid clutches of 10 eggs each. What is the effective population size?
Group of answer choices
10
13
22
103
112
Answers
The effective population size would be the number of successful males, which is three.
The effective population size refers to the number of individuals in a population that contribute genes to the next generation. In the given scenario, the lek mating system is being considered for an endangered species.
Out of the twelve males identified, only three of them are successful in gaining 100% of copulations from the ten visiting females. This means that these three males are the ones passing on their genes to the next generation.
Since the effective population size focuses on the individuals that contribute genes, we consider only the successful males in this case, which is three.
The remaining males who do not gain copulations do not contribute genetically to the next generation and are not part of the effective population.
Therefore, the effective population size is determined to be 3 in this scenario.
It is important to note that the effective population size is a critical factor in assessing genetic diversity, evolutionary potential, and the long-term viability of a population.
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HELP ITS URGENT! PLEASE HELP ITS DUE TOMORROW
Answers
As per the experimental values, When the temperature decreases the time taken for the starch to be digested increases. This means that when the temperature is decreased, the metabolic rate also decreases resulting in the decrease in the rate of digestion. As we decrease the temperature everytime by the value of \(10^0\)C, the rate of reaction decreases by the factor of 2.
_____________________________________A2)The slowest experiment was at Temperature \(20^o\)C by the rate of 0.066 and The fastest experiment was at Temperature \(40^o\)C by the rate of 0.32.
REASON:The reactants must contain sufficient kinetic energy to overcome a barrier called Activation Energy. Activation energy is the minimum amount of energy required to change the reactants into products. The Fastest reaction is at high temperature because when the temperature increases the molecules collide with one another more frequently, when the kinetic energy increases, more molecules make the effective collisions due to, so more molecules make up to the threshold energy. So increase in temperature increases the rate of the reaction.
_____________________________________A3)The optimum temperature for enzyme amylaze is 40 degree C because it has the fastest rate of reaction at that temperature. At high temperatures the shape of the enzyme is altered so that it is no longer complementary to its specific substrate., thus optimum temperature is 40 degrees, that is the reason why human body has temperature of 40.
_____________________________________A4)At high temperature the shape of the enzyme is altered so that it is no longer complementary to its specific substrate. Water boils at \(100^o\) C and at 100 degree C the enzyme gets denatured.
_____________________________________A4)At high temperature the shape of the enzyme is altered so that it is no longer complementary to its specific substrate. Water boils at \(100^o\) C and at 100 degree C the enzyme gets denatured.
_____________________________________A5)Independent variable is that variable which is changed. The changing of the independent variable causes the affect on another variable which is called dependent variable. The Independent variable is Temperature and the DEPENDENT VARIABLE is rate of reaction or rate of digestion.
_____________________________________A6)This question is already done, the table is complete.
_____________________________________Best Regards,Borzwhen a ribosome reaches the end of the coding region of an mrna molecule, so that a stop codon is in the a site of the ribosome,
Answers
At the A site, ribosome release factor binds the stop codon, and at the P site, the polypeptide is released from the tRNA.
When does the ribosome reach the mRNA's coding region's end?The genetic message is finally terminated when, after some time of elongation, the ribosome reaches a stop codon. The amino acid chain is consequently released as the ribosome separates from the messenger RNA. The translation process has now reached its termination phase.
When the mRNA reaches its finish, what happens?Termination is the action that completes translation. A stop codon (UAA, UAG, or UGA) in the mRNA causes termination when it enters the A site. Although they aren't tRNAs, release factors are proteins that neatly fit into the P site and identify stop codons.
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Which action is NOT a way to test a hypothesis? a. Analyze results b. Design an experiment c. Make a model d. Gather and evaluate evidence
Answers
Answer:
Make a model
Explanation:
A hypothesis is a plausible explanation of a given phenomenon of the natural world. This explanation (hypothesis) must be tested by using the scientific method.
The action 'analyze results' is NOT a way to test a hypothesis (Option a).A hypothesis can be tested (either confirmed or rejected) by experimental and/or observational procedures.The data collected by these experiments and/or observations can be then used as empirical evidence to support (or reject) the working hypothesis.In conclusion, the action 'analyze results' is NOT a way to test a hypothesis (Option a).
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All of the following are a part of the current cell theory except
large organisms have fewer cells
all living things are made of cells
new cells are produced from old cells
the cell is the basic unit of living things
Answers
Answer:
All of the following are a part of the current cell theory except large organisms have fewer cells.
Hope this helps :)
Explanation:
The cell theory states all of the other three choices except for the first one, "large organisms have fewer cells."
Cell theory, first proposed in the mid-19th century, states that cells are the basic structural/organizational unit of all creatures and that all cells come from pre-existing cells. Therefore, option (A) is not part of cell theory.
What is cell theory?Matthias Schleiden and Theodor Schwann developed the Cell theory. In 1838, German botanist Matthias Schleiden found that all plants have cells. British zoologist Theodor Schwann discovered in 1839 that all animals are formed of cells.
The three tenets of the cell theory are as follows:
One or more cells make up the building blocks of every living organism.The fundamental, organizational and operational unit of all living things is called a cell.Every cell in the body originates from a pre-existing cell.Therefore, option (A) that large organisms have fewer cells is not a part of cell theory.
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exotoxins are group of answer choices secretions that always target nervous tissue. antiphagocytic factors. proteins. lipopolysaccharides. only released after a cell is damaged or lysed.
Answers
Exotoxins are a group of proteins that are secreted by certain bacteria. They are not always specific to nervous tissue, as they can target a variety of cell types depending on the specific toxin.
Exotoxins can also act as antiphagocytic factors, preventing immune cells from engulfing and destroying the bacteria. These toxins are typically released by live bacterial cells, but some can also be released after the cell is damaged or lysed.
Some exotoxins are composed of lipopolysaccharides, which are complex molecules made up of both lipids and sugars. In summary, exotoxins are a complex and diverse group of secreted proteins that can target various cell types and have a range of effects on the host organism.
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All abiotic factors and biotic factors in a region is called?
Answers
Answer: an ecosystem!
Explanation:
An ecosystem consists of all the biotic and abiotic factors that influence on that community! Good luck! :)
what planet is closest to the moon right now
Answers
Which of the following statements about the diagrams below is TRUE? *
1 point
Pyrimidines
ΝΗ,
CH
NCH
HN
.CH
H
H
Cytosine
С
Thymine
Purines
NH
N
NH
NH₂
H
Guanine
G
H
Adenine
A
the molecules illustrated above bond with each other in long chains that are the two
sides of a DNA molecule
O each molecule illustrated above will only bond to one of the other molecules
O pyrimidines only bond to other pyrimidines and purines only bond to other purines
Ο Ο
pyrimidines bond to each other with two hydrogen bonds and purines bond to each
other with three hydrogen bonds
Answers
Explanation:
b
jebsjkamanmalxjdnsjakNdccznznannNn NC NC emskzkkajsndnncncn
What two things must come together to form a seed?
Answers
Answer:
Double fertilization involves two sperm cells; one fertilizes the egg cell to form the zygote, while the other fuses with the two polar nuclei that form the endosperm. After fertilization, the fertilized ovule forms the seed while the tissues of the ovary become the fruit.
Invasive species have what affect on native populations when they exist in the same niche?
Answers
Answer: their population was affected
Explanation:
In an experiment, two populations of one species of fruit flies were raised for several generations on different nutrients (starch and maltose). Then the members of the two populations were reintroduced and the mating frequencies of flies from the two different populations were recorded. Fruit flies fed on starch were more likely to mate with other starch fruit flies. The same was the case for maltose fruit flies. When they did mate, their offspring were infertile. The fruit flies are physically indistinguishable and genetically similar.
Match the characteristic with the correct species concept definition.
Group of answer choices
hybrids are fertile
[ Choose ] biological ecological morphological phylogenetic
physiologically similar
[ Choose ] biological ecological morphological phylogenetic
genetically similar
[ Choose ] biological ecological morphological phylogenetic
feed on starch or maltose
[ Choose ] biological ecological morphological phylogenetic
Answers
Answer:
Hybrids are fertile --- biological concept.
Physiologically similar ---- morphological concept
Genetically similar ---- phylogenetic concept
Feed on starch or maltose ---- ecological concept.
Explanation:
Hybrids are fertile is a biological characteristics of an organism, physiologically similar is a morphological characteristic of a specie, genetically similar is a phylogenetic characteristic of a specie and feed on starch or maltose is a ecological characteristic of an organism. The ability of two individuals to successfully produce fertile offspring is biological species concept whether individuals look similar is a morphological species concept closely related individuals are evolutionarily or phylogenetic species concept.
Can you list 1-6 Energy in the form of?
Answers
1. Energy in the form of Light (Solar energy) is converted into Glucose and Oxygen by photosynthesis.
2. Glucose
3. Oxygen
4. Energy in the form of ATP molecules drives cellular functions.
5. Carbon Dioxide
6. Water
Green plants and certain other species employ a process called photosynthesis to create nutrition from carbon dioxide and water. In most cases, the green pigment chlorophyll is used in photosynthesis in plants, and oxygen is produced as a byproduct.
What is Cellular Respiration?Cellular respiration is the method by which biological fuels are converted into a form that can be oxidized in the presence of an inorganic electron acceptor, such as oxygen, to provide a significant quantity of energy that powers the large-scale synthesis of ATP. Adenosine triphosphate (ATP) is created by cellular respiration, a series of metabolic reactions and events that take place in an organism's cells in order to remove waste products after converting chemical energy from foods into ATP. As a result of the catabolic events that occur during respiration, energy is released when big molecules are broken down into smaller ones. One of the main processes a cell uses to release chemical energy to power cellular activity is respiration. Many biochemical stages, some of which are redox reactions, contribute to the overall reaction.The delayed, controlled release of energy from the succession of reactions makes cellular respiration a peculiar combustion reaction, despite the fact that it is strictly one.To learn more about Cellular Respiration, refer to:
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