All organisms in the kingdom Animalia are multicellular heterotrophs whose cells lack cell walls.

a. true
b. false


Answer: a. true

Biology & Microbiology

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Compare and contrast the leading causes of death in 1900 with the leading causes of death today. What roles have microbiologists played in the dramatic changes that are evident?

What will be an ideal response?

Biology & Microbiology

In the EIA test for HIV infection, the microtiter plate is coated with disrupted HIV particles

Indicate whether the statement is true or false.

Biology & Microbiology

At night, the stomata of most plants will ________

a. regulate the diffusion of nitrogen b. open c. close d. close to prevent the loss of oxygen from the leaf e. regulate the diffusion of carbon dioxide

Biology & Microbiology

Select the correct pair of statements about FSH and LH function.  

A.  In males, FSH stimulates spermatogenesis and LH stimulates Leydig cells to secrete testosterone. In females, FSH stimulates growth of follicles and LH stimulates ovulation and development of the corpus luteum. B.  In males, FSH stimulates spermatogenesis and LH stimulates Leydig cells to secrete testosterone. In females, FSH stimulates ovulation and development of the corpus luteum and LH stimulates growth of follicles. C.  In males, FSH stimulates Leydig cells to secrete testosterone and LH stimulates spermatogenesis. In females, FSH stimulates growth of follicles and LH stimulates ovulation and development of the corpus luteum. D.  In males, FSH stimulates Leydig cells to secrete testosterone and LH stimulates spermatogenesis. In females, FSH stimulates ovulation and development of the corpus luteum and LH stimulates growth of follicles.

Biology & Microbiology