Which of the following methods is NOT a method of viral penetration?
a. Injection
b. Membrane fusion
c. Endocytosis
d. Exocytosis
e. None of these are methods of penetration
Ans: d. Exocytosis
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The tropical supralittoral zone immersed only at the highest spring tides is the:
a. brown. b. white. c. gray. d. black. e. yellow.
Programmed cell death is called apoptosis
____________________ Indicate whether the statement is true or false.
Which of the following is an example of sensory adaptation of receptors?
A) going into deep sleep B) distinguishing between different colors C) ignoring the shoes on your feet D) detecting sound and light simultaneously
Which of the following statements is not true?
A. A cell will temporarily decondense its chromatin to give proteins rapid, localized access to specific DNA sequences. B. When a cell divides, its chromatin structures will typically be inherited by its daughter cells. C. A cell can permanently condense and silence an entire chromosome during development. D. A cell will temporarily decondense its chromatin to silence genes during differentiation. E. A cell will temporarily decondense its chromatin to allow access to specific DNA sequences for replication, repair, or gene expression.