BIO1022 - Exam Revision

Question 1

What is Cytokine signaling of phagocytes is an example of?

Answer 1

Endocrine signaling

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Question 2

What determines the specificity of the hypervariable region of an antibody?

Answer 2

Genomic rearrangement

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Question 3

What is a granuloma formed around?

Answer 3

Infected lung macrophages.

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Question 4

What are the cellular process involved in the release of histamine or cytokines?

4 points.

Answer 4

• Receptor binding
• Signaling cascade
• Amplification
• Exocytosis

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Question 5

In which structure does fertilization typically take place?

Answer 5

Fallopian tubes

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Question 6

True or false

Haploid individuals produced through parthenogenesis will be clones of their parents.

Answer 6

False

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Question 7

Which hormone is indicative of the presence of a developing embryo and thus is the basis of home pregnancy tests?

Answer 7

hCG

_{BIO 3ag}

Question 8

True or false

To allow passage of the infant during childbirth, the cervix widens and lengthens.

Answer 8

False

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Question 9

If Leydig cells were unable to respond to GnRH, what effect would this have on spermatogenesis?

Answer 9

Spermatogenesis would be unaffected

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Question 10

Ovulation is triggered by a surge of which of the following hormones?

Answer 10

Luteinizing hormone

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Question 11

In gymnosperms, the outer tissues of the seed that aid in dispersal and the inner tissues that serve as a store of nutrients for the embryo are:

Answer 11

Diploid and haploid respectively.

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Question 12

An astrocyte is a type of:

Answer 12

Glial cell.

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Question 13

What cell type contributes to the formation of the blood-brain barrier?

Answer 13

Astrocytes

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Question 14

Myelination of neurons in the brain is the product of what?

Answer 14

Glial cells.

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Question 15

MHC class II proteins can be found on the surface of what?

Answer 15

Dendritic cell.

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Question 16

Which protein is responsible for the ability of flu virus to bind to epithelial cells?

Answer 16

Hemagglutinin

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Question 17

What is the cellular process is involved in the release of histamine or cytokines?

Answer 17

Receptor binding, signaling cascade, amplification, exocytosis

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Question 18

How can a pathogen be destroyed once a phagocyte internalizes it?

Answer 18

By exposure to reactive oxygen species and degradation by lysosomes.

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Question 19

Approximately how long after fertilization does the egg implant in the uterine wall?

Answer 19

5 days

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Question 20

What would be most affected if the chorion were absent from an amniotic egg?

Answer 20

Protection from desiccation

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Question 21

What becomes of the polar bodies formed during oogenesis?

Answer 21

They degenerate.

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Question 22

Sertoli cells stimulate sperm production in response to what?

Answer 22

Testosterone and FSH.

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