1) The net gain of ATP after glycolysis is ..
A) two
B) four
C) 34
D) 36
2) During photosynthesis water ..
A) is made
B) breaks down
C) is not necessary
3) The gas produced as a result of ethyl alcohol fermentation is ..
A) CO2
B) CO
C) O2
D) H2O(g)
well, i know the answer to #2! its not necessary.
To find the answers to these questions, we can break them down and analyze each one separately.
1) The net gain of ATP after glycolysis is..
Glycolysis is the first step in cellular respiration, where glucose is broken down. During glycolysis, two molecules of ATP are produced directly. However, in the next step called the Krebs cycle (or citric acid cycle) and oxidative phosphorylation, additional ATP is generated. To find the net gain of ATP after glycolysis, we need to consider the ATP production in these subsequent steps.
Option C (34) and D (36) seem to be too high for the net gain of ATP after glycolysis alone. Glycolysis only generates a small amount of ATP directly, so let's eliminate these options.
Options A (two) and B (four) are more likely. The net gain of ATP after glycolysis is actually two ATP molecules. Therefore, option A is the correct answer.
2) During photosynthesis, water..
Photosynthesis is the process by which green plants, algae, and some bacteria convert sunlight, carbon dioxide, and water into glucose (sugar) and oxygen. Water is an essential component of the photosynthesis process.
Looking at the options, we can eliminate option C (is not necessary) since water is indeed necessary for photosynthesis to occur.
Options A (is made) and B (breaks down) are left. While the process of photosynthesis creates glucose, it doesn't create water. Instead, water molecules are broken down during photosynthesis with the help of light energy, generating oxygen and hydrogen ions.
Therefore, the correct answer is option B (breaks down).
3) The gas produced as a result of ethyl alcohol fermentation is..
Fermentation is an anaerobic process that occurs in the absence of oxygen. Ethyl alcohol fermentation involves the breakdown of glucose into ethyl alcohol (ethanol) and carbon dioxide.
Considering the options, we can eliminate options C (O2) and D (H2O(g)) as they are not the gases typically produced during ethyl alcohol fermentation.
The correct answer is option A (CO2). Carbon dioxide is a byproduct of ethyl alcohol fermentation.
I hope this helps you understand the process of finding the answers to these questions!