Which of the following does not bud directly from the trans Golgi network?
a. Constitutive vesicles
b. Regulated secretory vesicles
c. Transport vesicles for lysosomal enzymes
d. Lysosomes
Ans: a. Constitutive vesicles
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Which of these trees reflects a hypothesis that Bacteria are more closely related to Eukarya than to anything else?
What will be an ideal response?
During activation of a T cell, the cytokine it produces to stimulate its own proliferation is ________.
A. interleukin 1 B. interleukin 2 C. tumor necrosis factor D. interferon gamma
Which is one of the three major categories of sex hormones?
A) glucocorticoids B) estrogens C) glucagons D) prolactins
Figure 2 depicts the region of cells (shaded gray) in which the even-skipped protein is present in a developing Drosophila embryo. Which of the following statements about the control of the eve gene is likely true based on Figure 2?
A. The Hunchback protein is an eve repressor. B. The bicoid gene is an insulator for eve gene expression. C. The Krüppel protein is an eve repressor. D. The Giant protein is an eve activator.