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BabaBlast [244]
2 years ago
12

Leaves are important plant structures because they?

Biology
1 answer:
maksim [4K]2 years ago
4 0
It gives the plant air and food
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1. Explain why neither cyclins not kinases alone can cause a cell to progress along in the cell cycle.
Degger [83]
1. Explain why neither cyclins nor kinases alone can cause a cell to progress through the cell cycle.

As cyclin accumulates, it activates their kinases that turn on the pathway to mitotic spindle formation, and so on.

2. How do controls of the cell cycle protect multi-cellular organisms from accumulating large numbers of damaged or defective cells?

The checkpoint control is responsible for multi-cellular organisms for not accumulating large numbers of damaged or defective cells. Checkpoint controls consist of proteins that detect mistakes and damage and quickly halt the cell cycle until repairs are made. When this occurs, the cell is said to be in cell-cycle <span>arrest.

</span>3. What is the difference between a cancerous tumor and metastasis?
Cancer is cause by mutations in the genes that encode these proteins can lead to uncontrolled growth. Cancer is when there is uncontrolled cell growth and reproduction. Metastasis is caused by tumors when they grow and interfere with the surrounding tissue or cells and break off and spread around the body. Cancerous tumors cause metastasis, and tumors are caused by mutations in genes that lead to uncontrolled growth.
4. What are the functions of tumor-suppressor genes and protoncogenes in noncancerous cells?
The genes that encode the checkpoint proteins are called tumor suppressors because they suppress the development of cells into tumors. If mutations inactivate these genes, the cell-cycle break is removed with or without a signal from the outside. Proto-oncogene’s are involved in promoting cell division, mutations can cause them to become oncogenes, or cancer genes which stimulate cells to leave G0 and divide whether or not it is a signal.
6 0
3 years ago
If 15% of a DNA sample is made up of thymine, T, what percentage of the sample is made up of adenine, A? And why
Rus_ich [418]

Answer:

15% is adenine

Explanation:

adenine is paired with thymine meaning the amounts will be equal

4 0
3 years ago
Which of the following is NOT a reason organisms perform the cell cycle?
ki77a [65]

Answer:

I honestly know its B cause I had the same question asked by my teacher

6 0
2 years ago
Perform the following
Oliga [24]

Answer:

1.813

Explanation:

3 0
2 years ago
Some antibiotics can harm the ribosomes in animal cells. Which of the following would you predict to be the most likely long ter
dlinn [17]
Likely if you harm the ribosomes the cell will die. Cells absolutely require ribosomes for normal functioning...they are constantly replacing proteins (including enzymes and the ribosomal proteins) to keep alive.
7 0
3 years ago
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