Which of the following does NOT directly enable photosynthesis to take place in a leaf?
a) guard cells.
b) stoma.
c) phloem.
d) xylem.
Ans: d) xylem.
Biology & Microbiology
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Describe and give the general function of the digestive tract.
What will be an ideal response?
Biology & Microbiology
Which of the following is not typically a modification of histones?
A. adenylation B. phosphorylation C. methylation D. acetylation E. adenylation and phosphorylation
Biology & Microbiology
How many "turns" are present in insulin chain B?
a. 1 b. 2 c. 3 d. 4
Biology & Microbiology
Sponges are very interesting animals. Although they do not have true tissues, they have a number of cooperating cell types. How do these different cell types cooperate in obtaining nutrients for the sponge?
What will be an ideal response?
Biology & Microbiology