Which of the following cells are alive at
maturity?
a. sieve tube members
b. vessel members
c. tracheids
d. vessel members and tracheids
e. sieve tube members and vessel members
A
Biology & Microbiology
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Where does karyogamy occur in basidiomycetes?
a. basidia b. conidiophores c. sporangia d. asci e. zygospores
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What removes Ca2+ from the inside of an axon terminal of a chemical synapse after an electrical impulse has passed?
a. ion channels b. active transport pumps c. passive carrier proteins d. exocytosis e. simple diffusion through the plasma membrane
Biology & Microbiology
The figure above represents ____
a. an exergonic reaction b. a metabolic pathway c. allosteric inhibition d. allosteric regulation e. an endergonic reaction
Biology & Microbiology
Which germ layer gives rise to the muscle layer of the uterus?
A) Endoderm B) Ectoderm C) Mesoderm
Biology & Microbiology