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kondor19780726 [428]
2 years ago
10

Which is a function of the testes?

Biology
1 answer:
myrzilka [38]2 years ago
8 0

Answer:

The testes are oval organs about the size of very large olives that lie in the scrotum, secured at either end by a structure called the spermatic cord. Most men have two testes. The testes are responsible for making testosterone, the primary male sex hormone, and for producing sperm.

Explanation:

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The complement pathway is a critical mechanism for eliminating microbes, and is comprised of more than 30 proteins that are cons
BaLLatris [955]

Answer:

3. Antibody-independent pathways of complement activation rely on complement components that directly bind to microbial surfaces.

Explanation:

There are three pathways of complement activation:

  • The classical pathway.
  • The alternative pathway.
  • The lectin pathway.

The classical pathway is triggered by binding of C1 either to the pathogen surface or to antibody bound to the pathogen.

The alternative pathway is triggered by the spontaneous hydrolysis of soluble C3 to C3(H₂O) and initiates eventual deposition of C3 convertase on microbial surfaces.

The lectin pathway is triggered by the binding of mannose-binding lectin or ficolins to carbohydrate residues in microbial cell walls and capsules.

6 0
3 years ago
Which of the following is NOT a membrane-disrupting toxin?
Vaselesa [24]

Answer:

Answer is A-B toxin.

Explanation:

A membrane-disrupting toxin is toxin that affect the cell membrane. The effect of its secretion  could be by interrupting the phospholipid layer or through pores formation on the membrane.

Membrane- disrupting toxins are regarded as  exotoxins. Examples are leukocidin and hemolysin which their effects cause leakages of the cytoplasmic content and lysis of the cell, through the formation of pores on the cell membrane.

The A-B toxin are produced by the proteins of pathogenic organisms such as the bacteria. Example is botulinum toxin.

3 0
3 years ago
List six kinds of epithelium based on numbers of cell layers and shape of cells
muminat
1. Simple squamous epithelium
The cells are flat and only one layer.
2. Simple cuboidal epithelium
The cells are cuboid and only one layer.
3. Simple columnar epithelium.
The cells are columnar and only one layer.
4. Stratified squamous epithelium
The cells are flat and containing several layers.
5. Stratified cuboidal epithelium
The cells are cuboid and containing several layers.
6. Stratified columnar layer
The cella are columnar and containing several layers.
4 0
3 years ago
Explain two ways in Which immunity is produced
lapo4ka [179]
1. mother to fetus 2. through exposure to the antigen (virus, toxins, or cancer cells).
5 0
3 years ago
(04.03 MC) What will most likely happen in the absence of a nucleus?
qaws [65]
Genetic information will not be transmitted by the cell
6 0
4 years ago
Read 2 more answers
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