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nlexa [21]
3 years ago
12

There is someone to help me, I do not understand anything at all!!!

Biology
1 answer:
defon3 years ago
4 0

Answer:

Look below

Explanation:

Graph 1 does indeed show a sudden drop in fermentation (after the evolution of the first living cells). This change occurred because the evolution of the first living cells allowed them to perform a type of respiration unseen before -- aerobic respiration and non-fermentation forms of anaerobic respiration. In other words, they had a new way of making ATP/energy: steps like the Krebs cycle and oxidative phosphorylation. This change occurred because the amount of oxygen was increasing in the atmosphere, and organisms needed to find a way to adapt. It may relate to the increasing temperature because glycolysis doesn't release carbon dioxide whereas this new form of energy production did. If you have more gases in your atmosphere, you're going to see higher temperatures and global warming.

Graph 2: Label B represents the gas carbon dioxide. Label A showed the gases hydrogen sulfide and methane decreasing. This is because photosynthesis would take out such gases from the atmosphere. Label B shows the level of a gas increasing. It's carbon dioxide because photosynthetic organisms released a lotta oxygen which was toxic for most of them, and cellular respiration organisms evolved and in turn increased CO2 levels.

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The dna of a certain organism has guanine as 30% of its bases. what percentage of its bases would be adenine?
Lisa [10]
30% because adenine always pairs with guanine.
3 0
3 years ago
Which climate condition is typically found in the tropics due to the interaction of the atmosphere and hydrosphere?
ivolga24 [154]

Answer:

Option (C) is correct i. e. , wet with high humidity.

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5 0
4 years ago
If a person uses up his or her reserve supply of glycogen and still does not eat, sugar comes from the?
Anvisha [2.4K]

If a person uses up his or her reserve supply of glycogen and still does not eat, sugar comes from the muscle.

Although only liver glycogen directly contributes to the release of glucose into circulation, maintaining a healthy blood glucose concentration is one of the glycogen's key functions. Since skeletal muscles lack glucose 6-phosphatase, they are unable to release glucose, and muscle glycogen primarily serves as a local energy source for activity rather than a source of fuel to keep blood glucose levels stable while fasting.

In fact, the breakdown of muscle glycogen into lactate allows for its delivery to the liver, where it participates in the maintenance of euglycemia through the process of gluconeogenesis (Cori cycle).

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6 0
2 years ago
Animal cells are placed in an isotonic solution. THEN, additional amounts of solute are added to the solution. What happens to t
Nitella [24]

Answer:

The animal cell will shrink due to loss of water to the external solution

Explanation:

An isotonic solution is that solution which has equal concentration with its external environment. Hence, no net movement of water occurs in an isotonic solution since there is no concentration gradient. Therefore, if an animal cell is placed in an isotonic solution at first, no net movement of water occurs because the intracellular and extracellular concentrations are at equilibrium.

However, if more solutes are added to the solution, it makes the solution HYPERTONIC to the cell i.e greater in concentration. This creates an osmotic gradient and causes water to move out of the animal cell into the solution in accordance to osmotic principles (movement of water from a low concentration of solute to high concentration of solute). This causes the animal cell to likely SHRINK.

3 0
3 years ago
How do we know that the horse and the donkey are not of the same species? They do not have similar morphology. They are unable t
Tems11 [23]

Answer:

Offspring of a horse and donkey are unable to reproduce.

Explanation:

The biological concept of species states that:

A species is a group of organism with similar characteristics, that can interbreed and have a fertile offspring.

Horse + donkey = mule. A mule is a hybrid and is not fertile.

7 0
3 years ago
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