All of the following are a form of potential energy that can be used by a cell EXCEPT
A. an electrical/ion gradient.
B. NADH.
C. ATP.
D. concentration gradient.
E. nitrogen.
E. nitrogen.
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Which of the following is mismatched?
A) IgSF[emdash]chondroitin B) cadherins?calcium ions C) selectins?leukocytes D) cadherins?embryonic development E) lectins?carbohydrates
The symplast connects of the interconnected cell walls
____________________ Indicate whether the statement is true or false.
Vacuoles for ingesting food and regulating their water balance are characteristic of
A. spirochetes. B. sporozoans. C. ciliates. D. trypanosomes. E. algae.
Amanda is a microbiologist who studies the pathogenic bacteria Streptococcus pyogenes. In what ways are they (Amanda and the bacteria) similar?
A. Both have linear chromosomes. B. Both have cell walls. C. Both have mitochondria for ATP production. D. Both are capable of sexual reproduction. E. Both obtain carbon from consuming organic molecules.