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MrRissso [65]
3 years ago
13

Which of the following best describes the relationship between genes, chromosomes, and DNA

Biology
2 answers:
Daniel [21]3 years ago
6 0
Genes are segments of DNA which form chromosomes. Chromosomes are segments of DNA.
Vlad1618 [11]3 years ago
5 0

Answer:

Genes are segments of DNA which form chromosomes. Chromosomes are segments of DNA

Explanation:

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Population growth is:
Ierofanga [76]

Answer:

B

Explanation:

We have learned of a major population crisis in China. Whereas The united states of America has the slowest population growth.

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Which of these is a characteristic of body cells that require large amounts of energy?
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Answer:They have a large number of mitochondria.

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What kind of weather does a stationary front bring?
hoa [83]
Stationary fronts occur when warm and cold air meet. This brings cloudy, and wet weather. So your answer would be C.
6 0
3 years ago
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Frog eggs are usually attached to vegetation or rocks near the surface of a pond. Tadpoles can use essentially all areas of a sh
Maslowich

Answer:

For a change in the environment that surrounds them.

Explanation:

Frogs and toads are amphibians that have the ability to live in both environments, that is why their respiratory system is highly adapted to extreme situations such as sudden climate changes, among others.

This modification of the environment many species would not tolerate because generally species always develop, live and reproduce in a single environment, such as humans, which is only in the terrestrial environment.

It is very difficult for frogs not to be able to adapt or survive climate change since they have the ability to adapt their respiratory system to two totally different media such as water and air.

6 0
3 years ago
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Help asap please!
andreyandreev [35.5K]

Answer:

Active transport:

  • requires energy
  • molecules move from low to high concentration sides
  • Na+ and K+ move by active transport

Simple diffusion:

  • molecules move from high to low concentration sides
  • molecules pass between lipids
  • small non-polar and polar molecules

Facilitated diffusion:

  • molecules move from high to low concentration sides
  • involves channel proteins
  • move large molecules

Explanation:  

  • Simple Diffusion is the pathway of only small molecules that freely move through the membrane by momentary openings produced by the lipids' movements. Diffusion is a slow process that requires short distances and pronounced concentration gradients to be efficient. An example of diffusion is osmosis by which water is the transported molecule.
  • Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel protein and many carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions need to cross the membrane, the process depends on an electrochemical gradient.  Glucose is an example of a hydrophilic protein that gets into the cell by facilitated diffusion.

Simple diffusion and facilitated diffusion are both passive transport processes because they only depend on electrochemical gradients, so they do not need any energy to occur.

  • Active transport is the transport of molecules that move against the electrochemical gradient, so it does need energy to happen. Molecules move from the lower concentration side to the higher concentration side of the membrane. Carrier proteins are in charge of active transport. The needed energy might proceed from the ATP molecules or the membrane's electric potential. An example of molecules moved by active transport are the Na and K.

7 0
3 years ago
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