Binary fission is a proses through witch

1 answer:

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Binary fission<span> ("division in half") is a kind of asexual reproduction. It is the most common form of reproduction in prokaryotes and occurs in some single-celled eukaryotes like Amoeba and Paramecium.</span>

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Explain the biological structure hierarchy of the human body and the role of homeostasis in maintaining the body. Include the fo

Nuetrik [128]

Answer:

1. Biological structure of the human body

The human body is organized in different levels according to their complexity.

The levels are the folowing (increasing complexity).

1. Atom (N, O, C,..)

2. Molecule (Protein, lipids, water...)

3. Organelle (mitochondria, golgi apparatus,...)

4. Cell (blood cells, bone cell,..)

5. Tissue (connective tissue, epithelial tissue,..)

6. Organ (lungs, kidney,..)

7. Organ system (skeletal system, muscuar system,...)

8. Organism (the human body)

Each of the levels is formed by an agrupation of the previous level. For example, cells are formed by a number of organelles, and a group of cells form a tissue.

Cells are the basic units of structure of the body, and there are different types of them.

2. Homeostasis

Homeostasis is a process of the body by which the organism works to maintain a stable internal environment, while adjusting to changes in the external environment.

This process is possible because of the work of both the nervous system and the endocrine system. While the first controles the body's activities and detects the necesity of adjustments, the second regulates the activities by using hormones.

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1 year ago

If a man who is heterozygous for blood type A marries a woman who is heterozygous for blood type B, what is the predicted phenot

Margaret [11]

Answer:

Blood types: AB, A, B, and O in ratio 1:1:1:1

Explanation:

The ABO blood group system is employed in Humans. The alleles for blood type A (A) and blood type B (B) are dominant over the allele for blood type O (O).

If a man who is heterozygous for blood type A (AO) marries a woman who is heterozygous for blood type B (BO), the following gametes will be produced by each parent:

AO - A and O

BO - B and O

Using these gametes in a punnet square, the following proportions of offsprings will be produced:

Blood type AB - 1/4

Blood type A - 1/4

Blood type B - 1/4

Blood type O - 1/4