Which of the following characteristics is unique to all animals?


Answer : Lack of cell walls

Biology & Microbiology

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If a person were born without eccrine glands, what skin function would he or she have a hard time completing?

A) metabolic function B) cutaneous sensation C) thermoregulation D) having the skin act as a physical barrier

Biology & Microbiology

Elevated blood pressure stimulates specialized cells in the heart to release antidiuretic hormone, a

peptide hormone that inhibits renin release

Indicate whether the statement is true or false.

Biology & Microbiology

Four of the five answers listed below are

related by a common phase of mitosis. Select the EXCEPTION.

a. chromosomes decondense b. spindle microtubules disappear c. nucleolus reappears d. chromosomes separate e. nuclear envelop re-forms

Biology & Microbiology

Which of the following events is not associated with the development of the female gametophyte?

A. A single parenchyma cell will enlarge to become a megaspore mother cell. B. The female gametophyte will contain three antipodal cells. C. The nucleus of the megaspore divides mitotically to produce eight nuclei. D. The megaspore undergoes meiosis producing four haploid megaspores. E. All of these are associated with the development of the female gametophyte.

Biology & Microbiology