Why are human testes in an external sac rather than in the abdominal cavity?

What will be an ideal response?


so the testes can be kept cooler than the body's interior

Biology & Microbiology

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Four of the five answers listed below are terms describing haploid cells. Select the exception

a. ovum b. primary spermatocyte c. spermatid d. polar body e. secondary spermatocyte

Biology & Microbiology

The atomic structure of water satisfies the octet rule by having

a. electrons shared between the two oxygen atoms. b. electrons from hydrogen transferred to the oxygen atom. c. electrons from oxygen transferred to the hydrogen atoms. d. oxygen share electrons with two hydrogen atoms. e. electrons shared between the two hydrogen atoms.

Biology & Microbiology

Which of the following describes the delivery of pollen to the stigma?

A) fertilization B) double fertilization C) germination D) pollination

Biology & Microbiology

Which of the following variables would support the "damage accumulation theory of aging"?

A. Poor diet and exposure to the sun lead to cellular damage. B. Protein fibers become cross-linked as we age. C. Harmful metabolites accumulate over our lifetime. D. None of these support the damage accumulation theory of aging. E. All of these support the damage accumulation theory of aging.

Biology & Microbiology