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nlexa [21]
4 years ago
12

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

Biology
1 answer:
defon4 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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What is it called when oceans proportions and amounts of.dissolved solids remain constant
makkiz [27]
Seawater, water that makes up the oceans and seas, covering more than 70 percent of Earth's surface. Seawater is a complex mixture of 96.5 percent water, 2.5 percent salts, and smaller amounts of other substances, including dissolved inorganic and organic materials, particulates, and a few atmospheric gases.

The most abundant dissolved ions in seawater are sodium, chloride, magnesium, sulfate and calcium. Its osmolarity is about 1000 mOsm/l.

Hopefully this helped hun!Have a good day!
3 0
4 years ago
Why does erectile dysfunciton happen
adelina 88 [10]

Ed happens because of Problems with blood flow

7 0
3 years ago
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A particular cell has a mutation that causes it to make defective centromeres. What would you expect to occur during mitosis for
cluponka [151]

Answer:

Chromosomes will not align at the equator of the cell, and subsequently will not separate to opposite poles.

Explanation:

Mitosis is a cellular division that results in daughter cells with identical copies of the genetic material as the parent cell. Mitosis is characterized by different stages viz: Prophase, Metaphase, Anaphase, and Telophase. The centromere is a very important part of the cell during division as it produces microtubules that grows out and bind to the kinetochore of each chromosome, hence, aligning them at the CELL PLATE (cell equator) and subsequently pulls them apart to opposite poles. This alignment and pulling apart occurs during METAPHASE and ANAPHASE respectively.

Mutation is any change that occurs in the nuceleotide sequence of the genetic material (DNA). If a change/mutation occurs leading to a defective or non-functional centromere, the centromere will no longer be able to produce microtubules that will bind to the kinetochores of each chromosome. Therefore, the chromosomes will be unable to align at the equator/middle of the cell and most importantly, inability to separate to opposite poles, which is the main point of Mitosis.

4 0
3 years ago
This is the process where a parent cell divides into four sex cells with half the chromosomes
luda_lava [24]
I think it is meiosis because that's what you call the division of sex cells while you call the division of any other cells mitosis.
6 0
3 years ago
Read 2 more answers
A decomposer is an organism that gets its energy from ____________.
lbvjy [14]
A decomposer is dead plant and animals I’m sorry if I’m wrong have a good day/night!
6 0
3 years ago
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