Most land animals have _____ fertilization
a. internal b. external
A
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What is the difference between the endocrine system and the autonomic nervous system?
A. The endocrine system employs chemical signals only, while the autonomic nervous system involves a combination of electrical and chemical signals. B. The autonomic nervous system promotes "fight or flight" functions, while the endocrine system promotes "rest and digest" functions. C. Norepinephrine is produced by the autonomic nervous system, while epinephrine is produced by the endocrine system. D. The axons of neurons of the endocrine system travel a shorter distance than those of the autonomic nervous system.
In a certain breed of chicken, two genes control color. A dominant allele (I) inhibits the expression of any color gene
(C). The recessive allele (c) results in albinism when homozygous (cc). Give the F2 phenotypic ratio of a cross between a colored chicken (ii CC) with a white chicken (II cc). What will be an ideal response?
A hormone that regulates the volume of urine is
a. insulin. b. glucagon. c. antidiuretic hormone. d. thyroxine. e. epinephrine.
Includes osteogenic cells, osteoblasts, osteocytes, bone-lining cells, osteoclasts, and osteoid. Osteoid, which makes up one third of organic bone matrix is secreted by osteoblasts. Consists of ground substance and collagen fibers which contribute to high tensile strength and flexibility of bone.
What will be an ideal response?