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ElenaW [278]
3 years ago
13

Gram for gram, which provides the most energy? carbohydrates proteins alcohol fats

Biology
1 answer:
Reika [66]3 years ago
4 0
Carbohydrates. they're what give you energy. 
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Cells must be alive to use energy and do work dose passive transport occur in a cell that is dead? Why or why not?
Orlov [11]

Answer:

<h3>Yes, Passive transport can occur in dead cells.</h3>

Explanation:

For passive transport to occur, a concentration gradient has to be formed across a permeable or semi-permeable membrane. If the cell membrane of the dead cell, which is a semipermeable membrane, is intact and a concentration gradient has formed on both sides, passive transport can occur.

A concentration gradient is the difference in the concentration of solute molecules  across the membrane. Passive transport will allow solute molecules to travel from the higher concentration of the solute to the lower concentration across a membrane till equilibrium is reached, that is, both the sides of the membrane has equal concentration of the solute.

The transport of the solvent can occur as well, from higher concentration to lower concentration.  

6 0
3 years ago
What characteristics of DNA results in cell differentiation in developing embryos?
Elina [12.6K]

Hi!


The correct option is B. Which genes are active.


Embryonic differentiation is a developmental process by which embryonic cells give rise to specialized cells and a diverse range of tissue structures. All of this unique cells essentially rise from a type of cells that are known as pluripotent cells.

But how do these pluripotent embryonic stem cells know which cells to differentiate into? This is where genes come into play. The cell has an inherent signalling ability that determines which gene is to be active and expressed. These specifically activated genes then translate into proteins for which it is specific, giving each cell, tissue and organ its particular identity.


Hope this helps!

5 0
3 years ago
Which statements show the importance of clean air?
telo118 [61]
I think it’s a&c. I could be wrong, but at least try
7 0
3 years ago
What is the rarest animal on earth?
Alexus [3.1K]

Answer:

book trout

Explanation:

6 0
2 years ago
Read 2 more answers
5.Write observation and conclusion of each of the following activities​
Tomtit [17]

Answer:

Water puts pressure depends on their amount.

Explanation:

On the left side, there is less quantity of water in the tube that put less pressure on the bag present at the bottom and the bag swells slightly while on the other hand, on the right side, there is more amount of water in the tube that puts large pressure on the bag located at the bottom and as a result it swells higher than the other bag so we can conclude that more water puts more pressure and less water puts less pressure.

3 0
2 years ago
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