An organelle is
A. a small structure within a cell.
B. a structure composed of several tissue types.
C. the basic structural unit of all living organisms.
D. a group of organs with a common set of functions.
E. a group of cells with similar structure and function.
A
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At the end of meiosis I, there are two haploid cells, each with two sister chromatids per chromosome.
a. true b. false
A nephron consists of what two parts?
a) minor calyx and major calyx b) medulla and cortex c) renal corpuscle and renal tubule d) peritubular capillaries and vasa recta
An intercellular chemical signal that is produced by neurons but functions like a hormone would be called a ________.
A. neurosynthesizer B. neuropeptide C. neurotransmitter D. neuropathogen E. neurocrine
Diffusion and active transport are likely to be important in
A. mastication of food. B. absorption of food. C. elimination of undigested food. D. propulsion of food through the digestive tract. E. mixing of food.