Which plant tissue did the first observed cells come from?
a. cork
b. pollen
c. a maple leaf
d. human skin
Ans: a. cork
Biology & Microbiology
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When Ca2
+ diffuses into the cytoplasm of muscle cells and initiates the crossbridge cycle, the animal is most likely stressed.
Indicate whether the statement is true or false.
Biology & Microbiology
What structure is responsible for moving the chromosomes during mitosis?
A) nucleolus B) cytoplasm C) spindle D) nuclear membrane
Biology & Microbiology
Why does FADH2 result in fewer ATP than NADH + H+?
What will be an ideal response?
Biology & Microbiology
The pyruvate dehydrogenase complex oxidizes and cleaves pyruvate to form one CO2 and ________.
A. lactate B. succinyl-CoA C. acetyl-CoA D. isocitric acid
Biology & Microbiology