Answer: Genetic variation describes naturally occurring genetic differences among individuals of the same species. Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation. And there are the reasons.
18.
14. In which situation is speciation MOST likely to
occur?
A. A large number of the population is exposed to
a viral infection.
B. A few members of the population develop
mutations in somatic cells.
C. A large number of the population migrates
over a great distance
D. A few members of the population are isolated
from the others.
Answer: D
Explanation:
Use Darwin’s finches as example they were separated and speciation occurred in the changed beaks
In which situation is speciation MOST likely to occur is few members of the population are isolated from the others.
What can cause speciation?The speciation process usually occurs due to adverse conditions imposed by the environment. Briefly, two causes are attributed for the process to occur: Geographical Isolation: When lineages of a species separate from the rest of the species for environmental reasons.
In this case, a species no longer identifies with it and thus it isolates itself from its environment.
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Describe how the process of natural selection can result in an increase in frequencies of certain traits found in a population.
Answer:
Natural Selection (Answer Below)
Explanation:
Natural Selection is the selection of a more beneficial trait. For example, if trees get covered in soot all the white beetles and butterflys are going to stand out like a sore thumb, but the beetles and butterflies that adapted and evolved now have better traits that help them hide predators. The predators have a harder time finding the now black colored butterflies and beetles due to the black soot meaning the beetles and butterflies will have a higher survivability
What are the characteristics of this layer that make it the ideal layer for the Concorde to travel?
Answer:
The temperature increases with weight
Explanation:
Characteristics of the layer that make Concorde to travel is The temperature increases with weight.
How did Concorde fly so high?
Concorde fly so high because the higher it flew, the thinner the air was that it encountered. This consequently led to less drag and fuel burn.
Did the Concorde fly in the stratosphere?
Able to cruise at a near-stratospheric altitude of 60,000 feet at 1350 miles per hour, the plane cut travel times on its routes in half. But speed and altitude were not the only factors that made Concorde so remarkable.
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During a schoolyard survey, students observe a litter of baby rabbits with brown and white offspring. Explain how it is possible for two brown furred rabbits to have a white furred offspring. Use evidence to support your answer.
Answer:
Its a recessive gene
Explanation:
It was passed down by their grandparents, or great grandparents
Tissue → Organ → → Organism
13. Which of the following levels of organization would accurately fill the gap in the diagram above?
A cell B molecule C organism system D population
Which process occurs when pollen grains are transported to the female part of a
plant?
a) elongation
b) pollination
c) fertilization
d) germination
Answer:
Germination i believe
Explanation:
1. Luca made the following chart for Earth's four basic movements, what needs to be correct on his chart?
Rotation Speed Revolution Speed Solar System Speed Milky Way Speed
0.3 miles/sec
18.5 miles/sec
370 miles/sec
150 miles/sec
The rotation speed and revolution speed should be switched
The revolution speed and solar system speed should be switched
The rotation speed and Milky Way speed should be switched.
The solar system speed and Milky Way speed should be switched.
Answer:
The solar system speed and Milky Way speed should be switched.
Explanation:
The speed of the Earth is with respect to how it moves around it's own axis (rotation speed), the Sun (revolution speed), solar system (solar system speed), and the milky way galaxies (milky way speed) etc.
According to this question, Luca made a chart for this Earth's four basic movements. The chart with their respective speed are as follows:
Rotation Speed - 0.3 miles/sec
Revolution Speed - 18.5 miles/sec
Solar System Speed - 370 miles/sec
Milky Way Speed - 150 miles/sec
Luca, however, made a mistake in his chart.
- The rotation speed of the Earth around its axis is correctly 0.3miles/sec
- The revolution speed of the Earth around the sun is correctly 18.5 miles/sec
- The solar system speed of the Earth i.e. around the solar system is about 150miles/hour
- The milky way speed of the Earth i.e. around local group of galaxies is about 370miles/hour.
Based on the comparison of Luca's chart and correct speed illustration, THE SOLAR SYSTEM SPEED AND MILKY WAY SPEED SHOULD BE SWITCHED.
________ is an example of the moon's gravitational force on Earth.
Answer:
Waves!
Explanation:
Answer: tides
Explanation:
Tides are an example of the Moon's gravitational oull on the planet of Earth. The ocean rises because the moon and elements in the core act like magents, and the water goes up.
PLEASE HELP! :(
According to the graph, what condition is best for enzyme activity?
Answer:
C
Explanation:
Highest peck in enzyme activities
I just don’t know the last system
Answer:
The Endocrine System
Explanation:
Because a hormonal mechanism is created by the kidneys for the maintenance of blood pressure by stabilizing blood volume.
Which layer is it found on?
Answer:
D. Troposphere
type a paragraph summarizing cellular division and differentiation
PLS HELP!!! PROJECT DUE IN 30 MINUTES!!
Answer:
Cellular differentiation is the process in which a cell changes from one cell type to another. Usually, the cell changes to a more specialized type. ... Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and during normal cell turnover.
Answer:
Cellular differentiation is when a cell changes from one cell type to another—usually, the cell changes to a more specialized class. Differentiation continues in adulthood as adult stem cells divide and create fully differentiated daughter cells during tissue repair and average cell turnover.
Explanation:
IM A DIFFERENT BREED!
Please help on question 3 thought it was b just need somebody to agree or find the answer
Answer:
i agree
Explanation:
b explains the problem the way its supposed to
if you answer this in a short paragraph I'll answer your newest question, give you brainliest, 5 star rating, and thanks. <3
How are precipitation and temperature different between the polar and tropical climate zones?
Answer:
Ok ill do it :D
The polar and tropical region temperature and preticaplation are different in many ways. The tropical climate temperature is warm compared to the Polar temperature The Tropical region precipitation is rain and lots of rain. The polar regions precipitation is mostly snow and hail. These two climate zones are different because where they are located on the globe. All in all there are many differences between these two regions.
Hope this helps ;D
Explanation:
I’ll mark brainly to the correct answer!
In the process of photosynthesis, plants use carbon dioxide (CO2), water (H2O), and light energy to produce a sugar (C6H12O6) and oxygen (O2). In the process of aerobic respiration, animals and plants release energy from sugar and oxygen and produce carbon dioxide and water. The chemical equations that describe these reactions look like this: 6CO2 + 6H2O + light C6H12O6 + 6O2 C6H12O6 + 6O2 6CO2 + 6H2O + energy
The question is incomplete, the complete question is;
In the process of photosynthesis, plants use carbon dioxide (CO2), water (H2O), and light energy to produce a sugar (C6H12O6) and oxygen (O2). In the process of aerobic cellular respiration, animals and plants release energy from sugar and oxygen and produce carbon dioxide and water. The chemical equations that describe these reactions look like this:
photosynthesis: 6CO2 + 6H2O + light ---> C6H12O6 + 6O2
cellular respiration: C6H12O6 + 6O2 ----> 6CO2 + 6H2O + 36 ATP
How do these equations explain why the total amount of O2 and CO2 remains the same?
Answer:
See explanation
Explanation:
If we look at photosynthesis and cellular respiration, we will realize that the both are complementary processes. The product of one process is the input material for the other process.
Respiration and cellular respiration helps to balance the amount of O2 and CO2 in nature because photosynthesis takes in CO2 and releases oxygen while cellular respiration takes in oxygen and releases CO2. This maintains the delicate balance between the both gases in nature.
Give an example of how Eubacteria can be beneficial. Explain. Please help me.
Answer:
Some bacteria are good for you, including the bacteria in your digestive system, or gut. These bacteria help to break down food and keep you healthy. Other good bacteria can produce oxygen are used to create antibiotics. Bacteria are used in food production to make yogurt and fermented foods.
An example of how Eubacteria can be beneficial is that these bacteria fix nitrogen for soil that can be used by living beings.
What are eubacteria?The bacteria in your gut and digestive tract are among the beneficial bacteria. These microorganisms aid in the digestion of food and promote good health. To make antibiotics, other beneficial microorganisms that can also produce oxygen are employed. Yogurt and other fermented foods are produced using bacteria in the food industry.
Oxygen, carbon, nitrogen, and phosphorus that living things like animals and plants cannot use can be converted by eubacteria into usable forms. In the soil, they fix the nitrogen that is present in the air.
Therefore, Eubacteria can help the environment by fixing nitrogen into the soil so that living things can use it.
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Which example best describes a reflex action?
A.
eating food when hungry
B.
going for a walk outside
C.
bending down to lift a heavy object
D.
coughing when the throat is irritated
Answer:
C bending down to lift a heavy object
a cell was poisoned by a substance that destroyed all of its mitochondria. which cell transport processes would be able to still continue?
Answer:
Nothing
Explanation:
If a cell's mitochondria were destroyed it would die. Mitochondria are the power houses of the cell and without energy, necessary reactions could not take place .
If a mitochondria stopped working the cell would not have its respiratory function such as to use carbon dioxide, water, and energy in which the cell needs to survive so the cell would eventually stop moving and slowly die out with no nutrients and energy.
Which is more important: the brain or the heart? Explain your reasoning.
Answer:
i would say the heart
Explanation:
the heart pumps blood through your system, keeping you alive. the brain only helps you think. and plus, so many people in this world are dumb so they already surviving without a brain so the obvious answer is heart
Please help me ASAP!!
which two statements describe events that help drive tectonic plate movement.
A. Energy from the sun heats magma beneath Earth's surface.
B. thermal energy from earth's core is transferred outward to the mantle by conduction.
C. subducting plates cause cooling at convergent.
D. Convection currents cause hotter magma to rise and cooler magma to sink
Answer: Thermal energy from earth's core is transferred outward to the mantle by conduction & convection currents cause hotter magma to rise and cooler magma to sink (B & D)
Explanation: Ap3x verified
Answer:
dc
Explanation:
#: Why do you think egg cells are large and sperm cells are small?
HELP!!! ASAP
Answer:
Because eggs contain amost all organelles, and materials for growth. A sperm only contains haploid chromosome and certian mitochondria for movement.
Explanation:
:)
The egg, like a sperm cell, has a nucleus with half the number of chromosomes as other body cells. Apart from a sperm cell, the egg contains a large amount of cytoplasm, or cell contents, which is why it is so large.
What are gametes?A gamete is an animal or plant reproductive cell. Female gametes are known as ova or egg cells in animals, while male gametes are known as sperm.
Ova and sperm are haploid cells, with only one copy of each chromosome in each cell. A sperm and an ovum combine during fertilization to form a new diploid organism.
Because the formation of the egg begins before birth inside the developing body of a female embryo and is not completed until the egg is fertilized by a sperm many years later, the egg cell is much larger than the sperm cell.
The sperm cell is small in size because its primary function is to swim to the egg cell.
Thus, the egg cells are large and sperm cells are small.
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What is the correct order for respiration?
Answer:
Glycolysis, krebs cycle, electron transport chain
Explanation:
What do scientists use to refer to organisms because common names can create confusion? *
Answer:
Scientific Name
Explanation:
Scientists use a two-namesystem called a Binomial Naming System.
They name animals and plants using the system that describes the genus and species of the organism.
17. Which of the following best describes how amino acids affect the tertiary structure of a
protein?
a) The number of amino acids determines the tertiary structure of the protein.
b) The interactions of the different R-groups with other R-groups and with their environment
determine the tertiary structure of the protein.
c) The R-group of the last amino acid that is added to a growing polypeptide chain
determines the next amino acid that is added to the chain.
d) The sequence of the amino acids in the polypeptide chain determines the protein's
primary structure but has no effect on its tertiary structure.
Answer:
It is B
Explanation:
I had this question on my test last week
The tertiary structure of the protein is determined by the interactions of the different R-groups with other R-groups and with their environment in the protein (Option B).
An R-group (also called variable group) is a side chain that is attached to the α-carbon of the amino acids, the building blocks of proteins.The linear sequence of amino acids within a protein is the primary structure of proteins. The second structure of proteins is determined by the pattern of hydrogen bonding in the peptide backbone. The most common secondary structures of the proteins are alpha-helices and beta-sheets.The protein tertiary structure is the 3D (tridimensional) shape of the protein, which is due to interaction among R groups of amino acids and with their environment.The most common tertiary structures of the proteins are globular and fibrous structures.Finally, the quaternary structure of the proteins is determined by the interaction of several protein chains or subunits.In conclusion, the tertiary structure of the protein is determined by the interactions of the R-groups and with their environment in the protein (Option B is correct).
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During telophase, each chromatid does what ?
A) Becomes a chromosome.
B) Moves to the center of the cell.
C) Forms a new nuclear membrane.
D) Pairs up with a matching chromatid.
Answer:
Becomes a chromosome.....
Answer:
A) Becomes a chromosome.
Explanation:
edg 2021
What substance kills Thrax (and most other pathogens)?
Answer:
Alcohol
Explanation:
A brown eyed person (BB) and a blue eyed person (bb) have several children. Which of these statements describe the probable eye color of their children?
1.All will have blue eyes
2.All will have brown eyes
3.Half will have brown eyes, and half will have blue eyes
4.Less than half will have brown eye
Answer:
2. B. All will have Brown Eyes
Explanation:
Brown is dominant, so all children will have Bb, brown eyes
Answer:
Im pretty sure theyll have brown eyes if not my bad
Explanation:
Which of the following nitrogen bases is present only in RNA and not in DNA?
Answer:
The nitrogen base uracil is only present in RNA. It replaces the Thymine used in DNA and bonds with Adenine.
Explanation:
A researcher is comparing sugar molecules that a cell takes in with amino acid molecules that the cell produces. Highlight all the statements that are true about amino acids but not true about sugars,
Always contain carbon
3. an input in glycolysis
C.typically contain nitrogen
D. can be used as an energy source
E can bond together to form proteins
Answer:
The correct statements for amino acids but not for sugars are :
C. typically contain nitrogen
E can bond together to form proteins
Explanation:
Both Sugars and amino acids always contain carbon molecules and both macromolecules can provide energy so are the source of the energy. Sugar molecule more specifically glucose molecule enters glycolysis during the cellular respiration process.
Amino acids always contain the nitrogen molecule in the structure along with carbon, oxygen, and hydrogen, there is a side chain present. Amino acids are the building blocks of the protein, peptide bonds are formed by amino acids together to make a poly peptide chain of a protein molecule.