Viruses change at a very fast rate Can you use this information to explain why vaccines against a specific virus don't last forever ?
Viruses can multiply very quickly, and so they can go through natural selection at a much quicker rate, allowing certain vaccine resistant mutations to take over a population.
wich of the organic compounds (necessary for all living things) are responsible for storing and transmitting genetic information?
A.5-Carbon Sugar
B. Nucleic Acids
C. Phosfate groups
Explanation:
As I think ,Nucleic Acids is correct one.YOU CAN THINK ABOUT DNA.
8. Two heterozygous purple flowered plants are crossed.
What percentage of the offspring are purple?
white?
Answer:
75% chance of purple, 25% of white
Explanation:
Heterozygous means having two different alleles of a gene
This must mean they are Purple dominant and white recessive
This will be represented as Pw
[tex]\left[\begin{array}{ccc} &P&w\\P&PP&Pw\\w&Pw&ww\end{array}\right][/tex]
This, called a punnet square, calculates the probability of the gene outcome. The top Pw represents one parent and the Pw on the left side represent the other.
In the diagram, each combo of letters ( PP, Pw, Pw, ww ) represents a 25% of what gene the offspring will have. PP means it'll be purple, and so does both Pw's. ww means white flowers though because there is no dominant trait and only recessive. This is the only way for a recessive trait to appear in a child.
Therefore there is a 75% chance of the offspring having purple flowers and a 25% chance of the offspring have white flowers.
compare and contrast connective tissue and muscular tissue?
please no links
Describe the pathway of an air molecule entering from the nose.
Answer:
Air enters through the nose (and sometimes the mouth), moves through the nasal cavity, the pharynx, the larynx, enters the trachea, moves through the bronchi and bronchioles till the alveoli.Jun
Explanation:
BEST GETS BRAINLIEST.
As The human population increases, so does the consumption of natural resources (fossil fuels, clean water, clean air etc.) What type of impact does this have on our natural ecosystem and environments.
(pls write a paragraph thank u)
Answer: The impact of so many humans on the environment takes two major forms: consumption of resources such as land, food, water, air, fossil fuels and minerals. waste products as a result of consumption such as air and water pollutants, toxic materials and greenhouse gases. Population is growing rapidly, far outpacing the ability of our planet to support it, given current practices. Overpopulation is associated with negative environmental and economic outcomes ranging from the impacts of over-farming, deforestation, and water pollution to eutrophication and global warming. Fossil fuels produce large quantities of carbon dioxide when burned. Carbon emissions trap heat in the atmosphere and lead to climate change. In the United States, the burning of fossil fuels, particularly for the power and transportation sectors, accounts for about three-quarters of our carbon emissions. Population density can have a negative impact on our environment and natural resources. These pressures can lead to deforestation, result in overcrowding, and could lead to the destruction of our planet's delicate ecosystem. Growing populations use large amounts of nonrenewable resources like timber, coal, and oil. Irrigation, for example, uses per calorie less land but more water, fertilizer, and/or capital. The variation of land quality also interacts with development. Population growth increases food demand and therefore the demand for agricultural land. Poverty is believed to be the leading cause of overpopulation. A lack of educational resources, coupled with high death rates leading to higher birth rates, result in impoverished areas seeing large booms in population.
Explanation:
if a woman is found to have damage to both of her ovaries, can the woman still get pregnant?
Answer:
It depends on how bad the damage is
Explanation:
carbon continuously cycles through the biosphere, changing forms. Which of the following statements accurately describes the movement of carbon?
Answer:
A
Explanation:
Maybe b but most likely A.
What is the relative humidity when the dry- bulb temperature is 16°C and the wet-bulb temperature is 14°C?
Answer:
The answer is 80%.
Explanation:
The relative humidity will be 80 %.
What is relative humidity?The amount of water vapor in the air, represented as a proportion of the highest quantity of water vapor the air could contain simultaneously temperature, was known as humidity levels, referred as relative humidity.
Calculation of relative humidity.
It can be calculated as:
Relative humidity = Actual vapor / saturation vapor density × 100
Relative humidity = 14 / 18 × 100
Relative humidity = 0.7777 × 100
Relative humidity = 77%.
Therefore, the relative humidity will be 77 %.
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Genes contain the information needed to make _____ that form our traits.
iodine 131 has a half-life of 8 days. if the amount of iodine 131 in a sample is 8 g how much iodine 131 will remain after 32 days?
Answer:
4g?
Explanation:
Not really sure but pretty sure.
Which of the following is not something that the circulatory system is responsible for?
A. bringing carbon dioxide to your cells
B. bringing nutrients to your cells
C. bringing oxygen to your cells
Answer:
A
Explanation:
The circulatory system is responsible for bringing the carbon dioxide to your lungs to get it out his body.
Answer:
A. bringing carbon dioxide to your cells
Explanation:
I did the test I got it right
Mothers may be encouraged to breastfeed their newborn babies. The first milk that a mother
secretes is called colostrum and contains antibodies.
(i) Name the cells that produce antibodies.
Answer:
Lymphocytes
Explanation:
20. Frigatebirds have webbed feet and spend much
of their life flying over the ocean but never land in
the water. What does this fact suggest about the
evolution of these physical and behavioral traits?
Answer:
Evolution changes the abilities of the Frigate birds.
Explanation:
The Frigate birds have webbed feet because they live in the ocean and unable to fly due to its big weight. Before the evolution, the Frigate birds lives in the ocean due to their large body weight but with the passage of time, evolution occurs that leads to formation of flying ability in the bird so now the bird have the old characteristics of their ancestor as well as new abilities in the physical traits of the Frigate birds due to the evolution.
How does a new mammoth egg cell get chromosomes from each of the parents?
Answer:
An egg or sperm only has half of the parent's sex chromosome pair. An egg will always have an X chromosome, since the woman's sex chromosome pair only has Xs. Sperm can have either an X chromosome or a Y chromosome. If a sperm with an X chromosome fertilizes the egg, the new cell will have two X chromosomes. One came from the father's sperm and one came from the mother's egg. Since the sex chromosome that is made is XX, the cell will grow into a girl baby.
Explanation:
Hope this helped Mark BRAINLIEST!!
mixing occur before the chromosomes are sorted into individual sperm or egg cells. Chromosomes from each pair in a mother or father, respectively, make contact and exchange pieces of DNA, creating hybrid chromosomes.
What is chromosome ?A chromosome is a thread-like structure present in the nucleus of cells such as plant, animal and human cells and it is made of a molecule of DNA (Deoxyribonucleic acid) and histone proteins.
It is composed of three components, DNA, proteins and RNA, amount of the DNA content ranges from 30 to 40 %, the amount of proteins from 50 to 65%, and small amount of RNA from 1 to 10%.
Two types of protein present in DNA such as histone and non-histones proteins, histone constitute large amount (90% of total protein), whereas non-histone is present in small amount (around 10% of total protein).
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CO2 has been referred to a greenhouse gas because it acts to trap the sun’s heat on our planet like the grase in a greenhouse traps the sun’s heat in the room. what does the graph indicate is the relationship between global tempratures and CO2 concentration
Answer:
a. As CO2 increases, the temperature also increases.
Explanation:
Carbon dioxide (CO2) is an atmospheric molecule produced naturally via respiration or artificially via burning of fossil fuels. CO2, as rightly stated in this question, has been referred to as a greenhouse gas because it acts to trap the sun’s heat on Earth.
Logically, an increase in the amount of greenhouse gas like CO2 released into the atmosphere means an increase in the greenhouse effect or global warming (increase in global air temperature). However, according to the GRAPHICAL REPRESENTATION in this question, an increase in the ppm concentration of CO2 led to an increase in the temperature (°F) of the globe over the years.
As depicted on the graph, at a CO2 concentration of 390ppm, the relative temperature was at over 1°F.
Groundhogs inhabiting a meadow environment drink water and rely on plants, including clover, for food. Which of the following terms describe both the water and the clover that the groundhogs consume? Choose the two that apply.
A. limiting factors
B. abiotic factors
C. biotic factors
D. resources
The following terms describe both the water and the clover that the groundhogs consume are:
Abiotic factors Biotic factorsWhat are the factors that affect population size?The 2 main aspects affecting denizens growth are the birth rate and death rate .
People development may also be impacted by people coming into the population from someplace else or leaving the residents for another region.
Thus, option "B" and "C" is correct, Abiotic factor and Biotic factors.
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PLEASE HELP!! BIOLOGY
Which of the following is NOT an element in the process of natural selection?
a
Individuals struggle for survival.
b
Organisms cause environmental change.
c
Fitness with your environment can lead to an increase in your population.
d
Genetic variation exists within a species.
Answer: what I learned is that natural selection needs 4 things
Explanation:
over production
genetic variation
i don’t remember the rest but those are the main ones so that there’s lots of offspring in case some cant survive
HOPE I HELPED
Mark each statement True or False
_Skeletal muscles are the muscles that move your bones; these
muscles are voluntary, meaning they are under your control
_Eventually, all skeletal muscles get tired.
_Cardiac muscle is found in your heart and it is involuntary:
that is, NOT under your control.
_The best way to keep your muscles healthy is to use them.
True Skeletal muscles are the muscles that move your bones; these
muscles are voluntary, meaning they are under your control
True Eventually, all skeletal muscles get tired.
True Cardiac muscle is found in your heart and it is involuntary:
that is, NOT under your control.
True The best way to keep your muscles healthy is to use them.
tRNA is responsible for interpreting the mRNA codons and bringing amino acids to the ribosome, in a word this process is known as:Required to answer. Single line text.
(2 Points)
Answer:
translation
Explanation:
fjdodkfksldmfnsks
Which pond would most the most likely to lead to terrestrial succession?
A) Pond A
B) Pond B
C) Pond C
D) Pond D
Answer:
pond d because u know what a turtle can leave in pond fish can live also other aquatic animal but a bird can't kive so it will die in water for a long time and will not be able to survive and it will cause terrestrial succession
The pond that should be most likely to lead to terrestrial succession should be considered as the pond d.
What is terrestrial succession?In terms of terrestrial ecosystems, the succession should arise either at the primary or the secondary succession. here the primary succession should be the type of succession where it arise at the time when the area should experience the disturbance.
Also it does not have the survival of the original species
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Identify the main structures of a plant.
A
B
C
Answer:
A: Leaves
B: Stem
C: Roots
Answer:
A
✔ Leaves
B
✔ Stem
C
✔ Roots
Explanation:
edge2021
Which statement about air is correct?
Answer:
Air is essential for all organisms
3. Which structure protects the developing embryo of a beech tree?
A. cotyledon
B. cuticle
C. seed coat
D. stomata
Answer:
Seed Coat
Explanation:
The teacher asked the students to design an experiment that would demonstrate that temperature will affect the pressure of a gas. Which of the following would be a valid experiment that shows the correct relationship between gas temperature and pressure?
A.
The students want to test the air pressure of bicycle tires. They check the pressure of the tires after letting the bike sit outside in very cold, winter weather for several hours. Then they bring the bike inside to a room temperature environment for several hours to warm up and check the pressure again. They find that the tires in the colder temperature showed a low pressure and that the pressure increased after the tires were able to warm up.
B.
The students want to test the air pressure of bicycle tires. They check the pressure of the tires after letting the bike sit outside in very cold, winter weather for several hours. They then bring the bike inside to a room temperature environment for several hours to warm up and then check the pressure again. They find that the colder temperature showed a high pressure in the tires and that the pressure decreased after the tires were able to warm up.
C.
The students wanted to test the air pressure in a plastic bottle of soda by comparing two bottles. They put one soda in a freezer for 12 hours and the second soda was left on the counter at room temperature for 12 hours. They found that the soda that had been in the freezer had burst, but the one on the counter was easy to squeeze and showed some give. They determined that the cold temperature had increased the pressure of the gas in the bottle causing it to burst.
D.
The students wanted to test the air presssure in a plastic bottle of soda by comparing two bottles. They put one in a freezer for 12 hours and the second soda was left on the counter at room temperature for 12 hours. They found that the pressure of the bottle which was in the freezer had remained the same. The pressure of the gas in the bottle on the counter increased, causing it to push on the sides of the bottle making it harder to squeeze.
Answer: I think its A
Explanation:
HELPP PLEASE - 15 Points - thanks :)
Explain why harmful mutations tend to disappear, while beneficial mutations become
widespread.
If a specific kind of protein is not continually used by a cell, the gene for that protein is _________________________.
Answer: what are the answer choices?
Explanation:
Answer:
The gene for the protein is turned on and off at different times.
Explanation:
The turning on and off of the gene is described as gene regulation. This process is important because it enables the cells to react quickly to the changes in the environment.
Note that , this process mostly occur at transcription level during gene expression , and help in determining the amount of protein made by a gene.
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Answer:
ocean currents
Explanation:
the ocean stores solar radiation and distributes heat
what animals have storeoscopic vision
Answer:
[tex]\huge\bf\underline{\underline{\pink{A}\orange{N}\blue{S}\red{W}\green{E}\purple{R}}} [/tex]
Stereoscopic vision is particularly well developed in mammals with foveas, frontal vision, hemidecussatting visual pathways, and vergence eye movements, such as felines and primates.Answer:
lateral-eyed prey mammals, birds, amphibians and invertebrates.
Explanation:
hope it helps
I need help what are plantea and animalia?
Answer: These organasims are both eukaryotic cells, so these 2 cells are capable to produce food by their own. The Plantae include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae. An animalia is one of the basic groups of living things that comprises either all the animals or all the multicellular animals, you can compare that to the plantae or protista.
Explanation: