Constructions of bones and teeth, blood clotting, muscle contraction, nerve contraction

What will be an ideal response?


functions that require calcium

Biology & Microbiology

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Humans excrete nitrogenous waste in the form of _______, and most fish excrete nitrogenous waste as _______

a. urea; ammonia b. urea; uric acid c. ammonia; urea d. urea; uric acid e. uric acid; ammonia

Biology & Microbiology

Which statement is LEAST characteristic of proteobacteria?

a. They live only inside plants. b. Some are photoautotrophs. c. Some are chemoautotrophs. d. Some are chemoheterotrophs. e. They are the most diverse group of bacteria.

Biology & Microbiology

The antigen-binding region of an antibody is formed by the

A) constant region composed of a heavy chain and a light chain. B) variable region composed of two heavy chains. C) variable region composed of two light chains. D) variable region composed of a heavy chain and a light chain. E) constant region composed of two light chains.

Biology & Microbiology

Compare and contrast nonhomologous end joining (NHEJ) and homologous recombination as methods of repairing double-stranded breaks in DNA

Under what conditions or in what organisms is homologous recombination not a likely mechanism for repair of double-stranded breaks? What will be an ideal response?

Biology & Microbiology