________ is a hormone produced by the seminiferous tubules that inhibits FSH from stimulating the production of sperm cells
Fill in the blank(s) with correct word
Inhibin
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A researcher has mapped the entire genome of an insect. When scanning the sequences she notices highly repetitive sequences, which contain tandem arrays of short sequences. She is most likely looking at which region of the chromosome?
A. centromere B. telomere C. chromatid D. spindle fiber E. centriole
During clonal selection and antigen binding
A) the B cell interacts with the attached microbe. B) the B cell interacts with a T helper cell. C) the T cell gives off interleukins. D) B cells recognize microbes and their foreign antigens.
Which of the following is a non-protein carrier found in some electron transport chains?
A) flavoproteins B) metal-containing proteins C) ribozymes D) cytochromes E) ubiquinones
Which of the below is responsible for the single direction of action potential propagation?
A. The one-way valves in the axon B. The refractory period C. The Na+ leak channels in the axon D. The Ca+ / K+ pump