A group of thylakoid discs make up:
a. the stroma.
b. a granum.
c. a chloroplast.
d. a vacuole.
e. the mesophyll layer
B
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Explain the relationship between the terms virus particle, virion, and virus genome
What will be an ideal response?
Why doesn't the stomach acid just digest right through the wall of the stomach?
A. The lining of the stomach is protected by mucus. B. Food prevents the acid from digesting the wall of the stomach. C. The pH of the stomach acid is not low enough to be able to digest the lining. D. Neutralizers are imbedded in the stomach lining. E. It does, we just rebuild the layers faster than they can be digested.
Four of the five answers listed below are related to phloem. Select the exception
a. companion cells b. sieve tubes c. translocation d. sucrose e. conducting tubes that are dead
Which of the following is true of both cilia and flagella?
A) They are commonly found on cells of the respiratory tract. B) They are numerous and are short extensions. C) They move in a back-and-forth manner. D) They have a 9 + 2 pattern of microtubules.