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Murrr4er [49]
3 years ago
5

The absorption mechanism that requires a specific carrier molecule (but not energy to move digested nutrients across cell membra

ne is called
Biology
1 answer:
KatRina [158]3 years ago
5 0

The answer is facilitated diffusion.  Facilitated diffusion happens when there is a carried changing the cell membrane so the nutrients can pass through.  During facilitated diffusion, the absorbed nutrients such as water soluble vitamins need a specific carrier to transport the to the cell membrane.

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It can be seen on a cladogram that modern birds and reptiles share a common ancestor. Select the piece of evidence that best sup
garri49 [273]

The evidence supporting the idea that modern birds and reptiles share a common ancestor is that feathers are a derived characteristic that first evolved in reptiles. Feathers represent an evolutionary derived trait.

In evolutionary biology, an autapomorphy is a distinctive phenotypic trait referred to as a derived trait, which is unique to a particular group/taxon.

The derived traits are phenotypic features that arise during the evolution of a particular taxonomic group.

These traits (derived traits) differ from the phenotypic trait of the ancestor of the group.

Learn more in:

brainly.com/question/3406200

7 0
2 years ago
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Which of the following is a disadvantage of wind as an energy source?
lesya692 [45]

Explanation:

Wind energy is one of the sources of renewable sources of energy that is environmentally friendly.

It uses wind power to generate other forms of energy mostly electricity.

Some of the drawbacks are:

  • Wind turbines pose serious threat to wildlife. It is common place to see dead birds in areas where wind power is being harnessed.
  • The quantity fluctuates from time to time. Since wind is an element of weather, it is not always in regular supply as desired.
  • The cost of constructing wind turbines can be very high a times.

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Non-renewable sources of energy brainly.com/question/3386515

#learnwithBrainly

4 0
3 years ago
Greg is telling his teacher how a cell is like a house. Which part of a cell is like the air in Greg's house?
NISA [10]
The air in Greg's house is like the cytoplasm of a cell because it is the gel-like material that surrounds the other parts of the cell. 
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8 0
3 years ago
Which of the following is true of the blood-brain barrier? a. The barrier is formed by cells that line the capillaries of the br
grin007 [14]

Answer:

The barrier functions to regulate the chemical composition of the extracellular fluid surrounding the brain cells.

Explanation:

Blood-brain barrier

It is a very selective semipermeable membrane , hence allow some specific substance to pass via it . This barrier separates the  extracellular fluid in the central nervous system  and the circulating blood from the brain .

<u>The barrier is composed of the endothelial cells .</u>

Passive diffusion is shown in this system , and allows molecules like the water , glucose , amino acid to pass .

It regulates the chemical composition of the fluid of brain cell .

6 0
3 years ago
What contributes to the movement of air masses?
Readme [11.4K]

B). natural wind patterns, I took the Cumulative Exam.

 

3 0
3 years ago
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