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Ierofanga [76]
3 years ago
7

Roy throws a ball up in the air. Each time he throws the ball up in any direction, it falls back to the ground as shown in the

Biology
1 answer:
AURORKA [14]3 years ago
7 0
It some back to earth since gravity pulls it down
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I do not understand these.
Oliga [24]
22. C
23. C
24. A
25. B
26. D
27. C
28. C

8 0
3 years ago
Which is transported by phloem?
Rainbow [258]

Answer:

Sugars

Explanation:

Phloem is a living tissue inside the plants, where it can flow in either direction. Inside the phloem, it will have a cell, which both ends have walls with perforations. So the sugars will travel through them in both directions.

8 0
3 years ago
Read 2 more answers
The p53 gene is important to the cell cycle in G1 and G2, and cancer. What happens to the cell cycle when a mutation occurs in t
german

Answer:

PFFT this might help? sorry if not mate

Explanation:

Cell cycle checkpoint controls play a major role in preventing the development of cancer [see Sherr, 1994, for a more detailed discussion]. Major checkpoints occur at the G1 to S phase transition and at the G2 to M phase transitions. Cancer is a genetic disease that arises from defects in growth-promoting oncogenes and growth-suppressing tumor suppressor genes. The p53 tumor suppressor protein plays a role in both the G1/S phase and G2/M phase checkpoints. The mechanism for this activity at the G1/S phase checkpoint is well understood, but its mechanism of action at the G2/M phase checkpoint remains to be elucidated. The p53 protein is thought to prevent chromosomal replication specifically during the cell cycle if DNA damage is present. In addition, p53 can induce a type of programmed cell death, or apoptosis, under certain circumstances. The general goal of p53 appears to be the prevention of cell propagation if mutations are present. The p53 protein acts as a transcription factor by binding to certain specific genes and regulating their expression. One of these, WAF1 or Cip1, is activated by p53 and is an essential downstream mediator of p53-dependent G1/S phase checkpoint control. The function of p53 can be suppressed by another gene, MDM2, which is overexpressed in certain tumorigenic mouse cells and binds to p53 protein, thus inhibiting its transcriptional activation function. Other cellular proteins have been found to bind to p53, but the significance of the associations is not completely understood in all cases. The large number of human cancers in which the p53 gene is altered makes this gene a good candidate for cancer screening approaches.

5 0
3 years ago
I don't understand why it isn't working never mind
Sliva [168]

Answer:

okay

Explanation:

5 0
3 years ago
Name the two things that power measures
Ipatiy [6.2K]
Power measures work and time

power=work/time
3 0
3 years ago
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