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wel
3 years ago
11

Please help I’ll give brainliest

Biology
1 answer:
Artyom0805 [142]3 years ago
5 0
Hydrogen because it only has one valence electron I believe.
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In figure 5-2 what is the layer labeled y composed of
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27) C.H.20+60, + ADP + P &gt; 600, + Molecule A + ATP<br> What is molecule A in the formula above
almond37 [142]

Answer:Glycolysis: (p. 94; Fig. 6.7A-C)

Refers to:

Occurs:

Energy investment phase: Steps 1 – 4 C-C-C-C-C-C

2 ATP

How many ATP's required (used)?

Results in 2 molecules of 3 phosphoglyceraldehyde (G3P) C-C-C C-C-C

Note: Step 5 is an isomeration step between G3P & Dihydixyacetone phosphate

Energy yielding phase: Steps 6 – 10 (G3P) C-C-C C-C-C

Explanation:

3 0
3 years ago
Immune system cells enter a resting phase after undergoing mitosis. When activated by an infection for example, they can reenter
Leni [432]

Answer:

G, S, G2, M

Explanation:

Cell cycle refers to the orderly events that prepare the cells for cell division and finally divide the parent cells into the daughter cells. The cell cycle consists of two stages: interphase and M phase.  

Interphase is the phase wherein cells prepare to enter the M phase. Interphase has three stages: G1, S, and G2.

G1 is the first gap between represents the time between the end of mitosis and the beginning of the S phase. During the G1 phase, normal growth and metabolism take place. G1 phase is followed by the S phase, the synthesis phase, during which DNA replication and synthesis of histone proteins occur.  

The cells then enter the G2 or the second gap during which cells synthesize more proteins and prepare to enter the M phase.  

M phase is the phase of nuclear division that divides the nucleus of the parent cell into 2 or 4 daughter nuclei (depending on the type of the cell division that the parent cell has entered).

Therefore, the sequence of the stages that the cell will go through is G, S, G2, and M.  

8 0
3 years ago
Explain at least three ways in which a mutation in an individual's DNA could occur, and describe at least 2 effects a mutation c
krek1111 [17]

Answer:

Mutations can occur from the following ways:

1. Errors that occur in DNA replication during cell division

2. Exposure to high-energy electromagnetic radiation

3. Exposure to chemicals mutagens

Effects of mutation include:

1. Genetic disorders

2. Cancers

Explanation:

A mutation is a change or alteration that occurs in the DNA sequence of a cell of an organism. These mutations can be passed on to offsprings of that organism. Mutations can occur from the following ways:

1. Errors that occur in DNA replication during cell division: during the process of cell division, the DNA in cell are copied many times. Some errors result when copying DNA, most of which are corrected during proofreading. However, some changes in the DNA sequence may not be corrected, thus resulting in a mutation.

2. Exposure to high-energy electromagnetic radiation: some types of electromagnetic radiation are ionizing, such as UV rays and X-rays. Prolonged exposure to these ionizing radiation may result in permanent damage to parts of the DNA, thereby resulting in a mutation.

3. Exposure to chemicals mutagens: mutagens are substances which are able to cause mutations. Some common chemical mutagens are alkylating agents such as ethylmethane sulfonate and N-methyl-N-nitrosourea.

Effects of mutation include:

1. Genetic disorders: in genetic disorders, certain normal functioning of the body processes are impaired. For example, hemophilia whereby blood lacks the ability to clot normally resulting in excessive bleeding.

2. Cancers: cancers occur when the cell of the body differentiate and grow abnormally. Various types of cancers include breast cancer, prostrate cancer, blood cancer etc.

3 0
2 years ago
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