Pyruvate is the end product of ____
a. glycolysis
b. acetyl-CoA formation
c. fermentation
d. the Krebs cycle
e. the citric acid cycle
ANSWER: a
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When a signaling molecule binds to a G protein linked receptor, the ligand-receptor complex associates with GDP
protein and causes GDP to be replaced by GTP. __________________ Indicate whether the statement is true or false.
The earliest type of eukaryotic organism currently known is a type of ____.
A. virus B. bacterium C. Alga D. animal-like protist E. fungus
Seeds were important in the evolutionary success of _____________, because they increased the success (to survive and reproduce) of the plant's offspring.
A. Bryophyte B. Angiosperms C. Pine trees D. Club mosses E. More than one above is correct
Which of the following correctly describes a difference between spermatogenesis and oogenesis?
A) Spermatogenesis results in four mature sperm cells, while oogenesis results in one mature egg cell. B) Spermatogenesis results in one mature sperm cell, while oogenesis results in four mature egg cells. C) In spermatogenesis, mitosis occurs twice and meiosis once, while in oogenesis, mitosis occurs once and meiosis twice. D) Spermatogenesis results in four mature sperm cells, while oogenesis results in one mature egg cell. In spermatogenesis, mitosis occurs twice and meiosis once, while in oogenesis, mitosis occurs once and meiosis twice.