Regulation of sex hormone levels is an example of negative feedback homeostatic control.
Answer the following statement true (T) or false (F)
True
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In humans, the effect of the hormone calcitonin is to ________
A) increase blood calcium levels by inhibiting osteoblasts B) increase blood calcium levels by stimulating osteoclasts C) temporarily decrease blood calcium levels when administered in large doses D) decrease mitosis of chondrocytes at the epiphyseal plate
The genotypes and phenotypes that result from a cross of AA and Aa (A = normal
pigmentation and a = albinism) are A) phenotypes - all normal; genotypes - 50% homozygous dominant and 50% heterozygous. B) phenotypes - 50% normal and 50% albino; genotypes - all heterozygous. C) phenotypes - all albino; genotypes - 50% heterozygous and 50% homozygous recessive. D) phenotypes - 75% norma and 25% albino; genotypes - 75% heterozygous and 25% homozygous.
The motor end plate
a. contains receptor sites that are capable of binding curare. b. contains acetylcholinesterase. c. experiences an increase in permeability to cations when combined with acetylcholine. d. both (b) and (c) above. e. all of these answers.
Cholesterol is a phospholipid.
Answer the following statement true (T) or false (F)