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AysviL [449]
2 years ago
6

Help please will mark brainly

Biology
1 answer:
fiasKO [112]2 years ago
6 0

Answer: layer c is oldest but I can see all of the options

Explanation:

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Which of the following is not common to both prokaryotic and eukaryotic cell division?
julsineya [31]

The correct answer is: A checkpoint will be activated if the spindle does not attach to a kinetochore.

Prokaryotes, do not undergo mitosis (like eukaryotes) and therefore have no need for a mitotic spindle. Prokaryotes also don’ t have checkpoints foor the regulation of cell division.

Normal eukaryotic cells (unlike cancer cells), move through the cell cycle in a regulated way in order to make sure that cells don't divide under conditions that are unfavorable for them. Information about their own internal state (nutrients, signal molecules, DNA integrity) is signal to go or not to go through the cell division. Because of that there are few checkpoints in the cell cycle at which the cell examines the signals and makes a “decision”. The major checkpoints are:

• The G1- the first point at which it must choose, once it passes the G1 checkpoint the cell enters S phase

• The G2-the cell checks DNA integrity and checks if replication is done well.

• The spindle checkpoint-at the transition from metaphase to anaphase.

3 0
3 years ago
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A true-breeding plant with yellow seeds is bred with a true-breeding plant with green seeds. What color seeds will the offspring
Jlenok [28]
A, all yellow because yellow is dominant so it will hide the green trait
8 0
3 years ago
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What two substances do geologists use in radiocarbon dating
Elan Coil [88]

The two substances that scientists use are

carbon-14 and carbon-12

5 0
3 years ago
Hypophysectomized rats (those that have had their pituitary glands removed grow fastest when given both gh and testosterone toge
slamgirl [31]
Based on the description above, the phenomenon that is being described is called SYNERGISM. Synergism occurs in this when both GH and Testosterone are being used and created a rather better outcome that it is given separately. The combined effect gave a better result.
8 0
3 years ago
What weight of Tris-HCL (MW=121) is required to prepare 2L of a 15% w/v solution?
podryga [215]

Explanation:

Percentage w/v means that weight of solute present in 100 ml of a solution. Hence, 15% w/v means that 15 gram of solute per 100 ml of solution.

Hence, for 2 L (or 2000 mL) preparation the amount of mass will be calculated as follows.

                 \frac{15 g}{100 ml} \times 2000 ml

                  = 300 g

Thus, we can conclude that weight of Tris-HCL required is 300 g.

7 0
3 years ago
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