What is the function of the structure labeled A in Figure 25-1?
a. to adhere to surfaces or other bacteria
b. to prevent phagocytosis
c. support and protection in hypotonic conditions
d. transmission of DNA between bacteria
e. locomotion
C
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Which of the following organisms is (are)
being used routinely in genetic engineering for production of drugs? I. rats II. yeasts III. bacteria
a. I and II b. I and III c. II and III d. I, II, and III e. III only
The cycle of viral infection in which the viral DNA is integrated into the host's DNA is called the ________ cycle.
A. lysogenic B. lysol C. lytic D. lysozyme E. lysosome
You encounter an insect with small eyes, long sensory antennae, and a long mouthpart shaped like a sword. What can you conclude about the environment in which it lives?
A) The environment is dark and has many plants. B) The environment is wet and has many other insects. C) The environment is hot and has many primates. D) The environment is cool and has many reptiles.
Explain the functions of adhesion junctions, gap junctions, and tight junctions in human cells.
What will be an ideal response?