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12345 [234]
3 years ago
13

What is a tetrad?

Biology
2 answers:
Alex17521 [72]3 years ago
4 0
I think the answer will be D
Ksju [112]3 years ago
4 0

Answer:

two sets of sister chromatids

Explanation:

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Can someone please describe the role of fermentation in maintaining ATP and NAD+ levels? I cant fully grasp the concept. Answer
Solnce55 [7]
Fermentation is the process by which a carbohydrate molecule is broken down into alcohol and carbon dioxide in the absence of oxygen. During this process, two molecules of ATP is produced. In the absence of oxygen, pyruvate formed from glycolysis will undergo fermentation process. During the process of fermentation, NADH from glycolysis will be converted back to NAD+. This is necessary in order for glycolysis to continue. Thus, fermentation regenerate more NAD+ and only a few molecule of ATP.
4 0
3 years ago
Which of the following best describes the logic of scientific inquiry?
beks73 [17]

Answer:

d. if my hypothesis is correct, I can expect certain test results

Explanation:

To create a theory is not enough to state an assumption. Called scientific research, the practice tries, through a logical procedure, to produce tested, proven and safe scientific knowledge. This concept is based on the logic of scientific research that states that a hypothesis must be tested, because if the hypothesis is correct, certain test results can be expected. For this, some rules or phases are part of the process. And they are: observation, hypotheses, research method and conclusion.

Thus, we can conclude that among the alternatives presented, the one that best describes the logic of scientific investigation is the letter D.

4 0
3 years ago
Which Matt it is most likely used to that by what happened before the start of the Paleozoic era
BaLLatris [955]

The Paleozoic Era ended with the largest extinction event in the history of Earth, the Permian–Triassic extinction event. The effects of this catastrophe were so devastating that it took life on land 30 million years into the Mesozoic Era to recover

7 0
3 years ago
Which of the following is true about the sugar molecules in plants
seropon [69]
Answer 1)

Not 2 bc they don’t come from the soil, they are made by plants through photosynthesis.

Not 3 bc I’m pretty sure sugar is not the only source of food for plants.

Not 4, I’m not exactly sure why not 4, but my gut is saying 1.

Sorry the explanation is not super helpful.

6 0
3 years ago
A scientist finds a fossil that she thinks might make a good index fossil.
Mekhanik [1.2K]

Answer:

An index fossil is also known as guide fossils or indicator fossil. They are fossils used to determine and identify geologic periods.

The main characteristics of an index fossil include :

1.It must be distinctive.

2.It must be widespread.

3. It must be abundant

4. It must be limited in geologic time.

Due to trends and studies of most fossil-bearing rocks being formed in the ocean, the major index fossils are mostly marine animal or plant organisms.

6 0
3 years ago
Read 2 more answers
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