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stiv31 [10]
3 years ago
12

Explain the steps (5) that would need to take place for primary succession to occur.

Biology
1 answer:
BartSMP [9]3 years ago
5 0

Answer:

The labels I-VII represent the different stages of primary succession. I-bare rocks, II-pioneers (mosses, lichen, algae, fungi), III-annual herbaceous plants, IV-perennial herbaceous plants and grasses, V-shrubs, VI-shade intolerant trees, VII-shade tolerant trees.

Explanation:

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yan [13]

Answer:

15. D have specific gened activated

16. G cell division is unregulated

17. D providing information to form proteins

Explanation:

15. When an egg is first fertilised, the cells are very flexible. They are sort of like a "blank slate", and can become any type of cell. From these cells, all the cells in the body are created: brain cells, skin cells, blood cells etc. To become all these different types of cells, they keep dividing, slowly branching off and becoming more specific. This process is called differentiation.

They do this because different patterns and combinations genes are activated that turn them in to these different and specific cell types.

16. One of the hallmarks of a cancer cell is unregulated cell division. Oncogenes start as normal genes (called proto-oncogenes) that function in normal processes, such as the cell cycle, inhibiting apoptosis. However, when they become mutated, they can promote the growth and division of cells and prevent their programmed death. This is because they become more active or present in higher amounts following the mutation. This causes such functions in the cell to become deregulated, leading to uncontrolled cell proliferation and the growth of harmful tumour cells.

17. The central dogma of biology states that DNA --> RNA --> protein. The messenger RNA (mRNA) is transcribed from the DNA. It contains a message that is translated by the protein synthesis machinery to form proteins.

This is how all the proteins in the cell are produced, and the information for how to encode them is entirely dependent upon the sequence of the DNA, which is sent as a coded message in the form of RNA, to the protein synthesis machinery. The protein synthesis machinery makes the proteins according to the DNA sequence (as translated from the mRNA).

3 0
3 years ago
Gravity moves rocks and soil uphill true or false?
dedylja [7]
False gravity pulls rocks down
4 0
3 years ago
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2. According to the passage, two American scientists found "unexpected static in their radio
sattari [20]

Answer:

The answer is A scientific theory

Explanation:

I just did it

5 0
3 years ago
I used a lot of different pieces of equipment, I liked to use the DNA analyzer the most. Forensic science has changed drasticall
butalik [34]

Answer:

Now a days, due to technological evolution we have modern and advanced devices than we have a 100 years ago. These devices and equipment like a DNA analyzer used in forensics have made it easier to analyze the victims DNA in no time. Not only these devices are fast and efficient but are also very accurate and help us get better and better results as the days of technological evolution are passing by....

3 0
3 years ago
Which of the following is true about a sea star's DNA?
jonny [76]

Answer:

The answer is: All of the cells of the sea star have the same exact DNA (I think)

Explanation:

8 0
2 years ago
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