During meiosis, a process known as crossing over occurs. Which statement below summarizes the results of crossing over?


O Homologous chromosomes make copies of each other.
Genetic information is removed from both chromosomes.
O DNA winds up into chromosomes and genetic information is deleted.
O DNA is exchanged between homologous chromosomes, resulting in genetic variation.

Answer:

answers are:

PLS FOLLOW ME.....

AND ALSO MARK AS BRAINLIST

Answer:

c)

Explanation:

The central nervous system (CNS) processes sensory inputs and initiates appropriate motor outputs. Therefore, option C is correct.

The brain and spinal cord make up the central nervous system. The brain directs our thoughts, memories, movements, and emotions. Between the brain and the nerves that run throughout the body, the spinal cord relays messages.

It regulates cognition, personality, memory, emotion, speech, and the capacity to feel and move. The corpus callosum, a band of nerve fibers in the middle of the brain, connects the left and right hemispheres of the brain.

Thus, the central nervous system (CNS) processes sensory inputs and initiates appropriate motor outputs. Therefore, option C is correct.

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The answer is two operons control bacterial respiration

Answer:

two operons control bacterial respiration

Explanation:

Answer:

Naming binary (two-element) covalent compounds is similar to naming simple ionic compounds. The first element in the formula is simply listed using the name of the element. The second element is named by taking the stem of the element name and adding the suffix

i think its

carbon- 2 (there are two in the n=1 level) 4 (there are four in the n=2 level)

i might be wrong, but hope this helps :)

Electrons in atoms are arranged in energy levels. The electrons in the energy levels of carbon are;

n= 1 ------ 2 electrons

n = 2 ----- 4 electrons

n =3 -----  0 electrons

n = 4 ----- 0 electrons

Carbon has the electronic configuration; 1s2 2s2 2p2.

This means that there are only two electrons in the n-1 level and there are four electrons in the n=2 level.

This makes a total of six electrons in carbon as shown.

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Answer:

The onerous elements of organisms, like bones, shells, and teeth have a far better likelihood of changing into fossils than do softer elements. One reason for this can be that scavengers typically don't eat these elements. onerous elements conjointly decay additional slowly than soft elements, giving longer for them to be buried.

Explanation:

Answer:

Water has a higher specific heat than air. So, it will require more energy to raise the temperature of water from 20°C to 30°C compared to what is needed to raise the temperature of the same mass of air.

Explanation: sample answer

Answer:

True

Explanation:

A tissue is a group of cells that does the same function.

Answer:

When temperature and wind speed are constant, but humidity increases, the rate of evaporation will decrease. When wind speed and humidity stay constant, and temperature increases, then the rate of evaporation will increase because warmer air can hold more water vapor than colder air.

Answer:

if the rate of evaporation reduces water cylcle will stops and amount of water present in the world will be increase.humifity will be more.

Answer:

The answer is Scientific thoeries are a culmination of many scientific investigations drawing together all current evidence.

Explanation:

Answer:

I think this is right

Explanation:

ocean warming evidence - melting of glaciers and ice caps, expansion of ocean volume, organisms more prone to illness or difficult for some species to make shells or growing difficulty in absorbing carbon dioxide

ocean acidification evidence - growing difficulty in absorbing carbon dioxide,

large concentration carbonic acid, organisms more prone to illness or difficult for some species to make shells

Answer:

I think this is right

Explanation:

ocean warming evidence - melting of glaciers and ice caps, expansion of ocean volume, organisms more prone to illness or difficult for some species to make shells or growing difficulty in absorbing carbon dioxide

ocean acidification evidence - growing difficulty in absorbing carbon dioxide,

large concentration carbonic acid, organisms more prone to illness or difficult for some species to make shells

Explanation:

b

Answer:

It's the DNA..........

The structure that the virus can use inside a host cell to produce new virus particles is the DNA.

Bacteriophage which literally means bacteria eater is a type of virus that has the ability to infect bacteria.

Basically all bacteriophages consist of nucleic acid molecule (DNA) which is surrounded by a protein coat( the capsid head).

It also possess a tail sheath through which it transfers it's DNA into host cell.

Eventually, new bacteriophages assemble and burst out of the bacterium in a process called lysis.

Therefore, the structure that the virus can use inside a host cell to produce new virus particles is the DNA.

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Answer:

There are many different ways that cells can connect to each other. The three main ways for cells to connect with each other are: gap junctions, tight junctions, and desmosomes.

Explanation:

Cell Signaling is an important facet of biological life. It allows cells to perceive and respond to the extracellular environment allowing development, growth, immunity, etc. Additionally, errors in cell signaling may result in cancer growth, diabetes.

Answer:

Survive

Explanation:

There may be multiple answers, but the mouse is able to:

Reflexes

Sense

Movement

Instincts

Be aware

These factors can help escape the owl.

Answer:

Survive

Explanation:

a.shed their skin..

Explanation:

Exoskeleton

A true exoskeleton, like that found in arthropods, must be shed (moulted) when it is outgrown. ... The new exoskeleton is still capable of growing to some degree, however. Animals of the order arthropoda, like lizards, amphibians, and many other animals that shed their skin, are indeterminate growers

☁️ Answer ☁️

PROVIDES INSTANT ENERGY TO THE BODY:

This appears to be the primary function of carbohydrates in the body.

Carbohydrates which we consume as food in the form of starch (ex: potato, bread), sucrose (ex: sugar, fruits), etc. get digested in the body to release glucose.

RESERVE FOOD:

Carbohydrate is also stored as the reserve food in the body. This is a precautionary measure for the body to cope up in times of hunger.

CARBOHYDRATES FORM OTHER BIOMOLECULES:

Carbohydrates in excess are converted into other bio-molecules of physiological importance. They mostly get stored in the form of fats.

DETOXIFICATION OF THE BODY BY METABOLISM:

Many drugs and toxic wastes in the body are metabolized for easy excretion in the body.

SPARING PROTEIN

In a situation where there is not enough glucose to meet the body’s needs, glucose is made from amino acids. Because there is no storage molecule of amino acids, this process requires the destruction of proteins, primarily from muscle tissue. The presence of adequate glucose basically spares the breakdown of proteins from being used to make glucose needed by the body.

Hope it helps.

Have a nice day noona!~ ￣▽￣❤️

Answer:

In nature, populations are usually evolving. The grass in an open meadow, the wolves in a forest, and even the bacteria in a person's body are all natural populations. And all of these populations are likely to be evolving for at least some of their genes. Evolution is happening right here, right now!

To be clear, that doesn't mean these populations are marching towards some final state of perfection. All evolution means is that a population is changing in its genetic makeup over generations. And the changes may be subtle—for instance, in a wolf population, there might be a shift in the frequency of a gene variant for black rather than gray fur. Sometimes, this type of change is due to natural selection. Other times, it comes from migration of new organisms into the population, or from random events—the evolutionary "luck of the draw."

I hope this helps a little bit.

Answer:

A

Chlorophyll a absorbs wavelengths of light between 500 to 600 nm.

Answer:

The S phase and prophase

Explanation:

Replication: it occurs in the S phase of the cecular cycle and the condensation of the chromosomes, the phase is M.

Answer: The process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.

Explanation:

Answer:

Evolution is defined as the process of growth and development or the theory that organisms have grown and developed from past organisms. ... An example of evolution is the theory started by Charles Darwin that theorizes about how humans came to be in their present form.

hope this helps.

Answer:

D

Explanation:

Answer:

D

Explanation:

Pretty obvious lol

Answer:

DNA replicates before a cell divides to give a complete set of genetic instructions to each daughter cell.

Explanation:

Answer:

How is the endocrine system related to the nervous system in terms of its regulatory activity?

For one, the endocrine system uses chemical signaling (hormones, produced by glands) while the nervous system uses electrical signaling (neural impulses). The signal transmission of the nervous system is fast because neurons are interconnected, but the functions are more short-lived.

Explanation:

Answer:

D. Meiosis forms four cells all with different genetic material

Explanation:

They are haploid cells and each cell only had one set of chromosomes. Meiosis results in variation.

Answer:

Several tools aid ecologists in measuring abiotic factors, including thermometers, altimeters, pH meters and many other devices.