Q: What is secreted by the cells surrounding spermatogonia to help sperm production? Choices: - estrogen - dihydrotestosterone - follicle stimulating hormone - testosterone A:
testosterone

(Question)
Q: The cytoskeleton crisscrosses the cytoplasm, this gives what to the cell? Choices: - external passageway - internal passageway - external framework - internal framework A:
(Answer)
internal framework

Ques: Q: What process provides over 99 percent of the energy for life on earth? Choices: - farming - glycolysis - fracking - photosynthesis A:
Ans: photosynthesis

(Q).
Q: The yellowstone hot spot is a famous example of a what? Choices: - form hot spot - oceanic hot spot - deeper hot spot - continental hot spot A:
(A).
continental hot spot

Ques:Q: What consists of a nitrogen atom bonded to some combination of carbons and hydrogens? Choices: - an alkali - a metalloid - a chloride - an amine A:

Ans:an amine

Ques:Q: What are compounds with the same number of carbon and hydrogen atoms called? Choices: - alcohols - hydrocarbons - monomers - isomers A:

Ans:
isomers