When there is plenty of product in a chemical reaction, it provides the simplest example of a(n) _______, blocking the active site of the enzyme from binding more substrate.
a. coenzyme
b. kinase
c. inhibitor
d. cofactor
Answer: c. inhibitor
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What are the genotypes of the married couple?
Polydactylism is a dominant trait that results in extra fingers and toes in humans. A polydactyl man marries a woman with 10 fingers and toes. They have a child that has a normal number of digits. The phenotype of the man's father is unknown, but his mother has a normal phenotype. A. woman Dd, man dd B. woman DD, man dd C. woman dd, man DD D. woman dd, man Dd E. woman DD, man Dd or dd
In animal cells, spindle microtubules originate from structures called
A) cyclins. B) histones. C) centrioles. D) chromatids.
Claire lost the ability to completely empty her bladder following a stroke, and a nurse inserts a catheter into the open end of her urinary tract each day to remove the urine. Into what structure does the nurse insert the catheter?
A. bladder B. renal pelvis C. collecting duct D. urethra E. nephron F. ureter
In which vessel of the human circulatory system is blood pressure the highest?
a. Vena cava b. Arterioles c. Aorta d. Venules e. Right atrium