A function of the Golgi complex includes:
a. Degradation of abnormal proteins
b. Destruction of hydrogen peroxide
c. Glycosylation of proteins
d. Storage of calcium
e. Translation of messenger RNA
ANS: C
Golgi stacks are the site of O-linked glycosylation of proteins and for the addition of carbohy-drate molecules such as sialic acid. See 1-17.
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The Thyroid hormones T3 and T4 are lipophilic so they do not require transporters to cross cell membranes.
A) True B) False
Answer the following statements true (T) or false (F)
1. The correct sequence of development is zygote, blastocyst, and morula. 2. The energy needed for the early development of the zygote is supplied by the ovum that was fertilized. 3. The yolk sac is an important food supply for the growing fetus. 4. In humans, one function of the yolk sac is to assist in the production of blood cells. 5. The amnion is the bridge between the mother and baby wherein food and oxygen are exchanged for carbon dioxide and waste products.
Cell A is a gland cell that makes and secretes proteins. Cell B is another type of cell that synthesizes and secretes steroids. If you were to look at electron micrographs of the two cells, what differences would you expect to see?
A. The two cells would most likely look identical. B. Cell A would have fewer secretion granules than cell B. C. Cell B would have more granular endoplasmic reticulum than cell A. D. Cell A would have more granular endoplasmic reticulum than cell B. E. Cell A would have more agranular endoplasmic reticulum than cell B.
Antigen-presenting cells are ________________, and they display antigens to both ________________ and ______________
60. A. immune cells; B-lymphocytes; T-lymphocytes B. immune cells; helper T-lymphocytes; cytotoxic T-lymphocytes C. any nucleated cell; B-lymphocytes; T-lymphocytes D. any anucleate cell; helper T-lymphocytes; cytotoxic T-lymphocytes E. any blood cell; helper B-lymphocytes; cytotoxic B-lymphocytes