Certain complement proteins kill foreign microbes by
A. inactivating their ribosomes.
B. destroying their nucleic acids.
C. creating interferon.
D. causing them to burst.
E. agglutinating them.
Answer: D
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____ allow oxygen to diffuse through the outer bark of woody plants to supply the respiratory needs of the underlying cells
Fill in the blank with the appropriate word.
If a viral gene prevents peptidoglycan units from being linked to lipid carriers, what will happen to the bacterial cell?
A. The cell wall will weaken, eventually leading to cell lysis. B. Lipid metabolism will become impaired. C. The cell wall with become stronger leading to virus to enter the lysogenic cycle. D. The bacterial cell will start to take on the properties of a Gram Negative cell.
Researchers introduce DNA into plants by using ____
I. bacteria II. electric shocks III. chemical shocks
a. I only b. II only c. III only d. II and III e. I, II, and III
The repolarization phase of an action potential is dependent on the sodium-potassium pump
Indicate whether the statement is true or false