Four of the five choices listed below are characteristics of cnidarians. Which one of the five choices is not a characteristic of cnidarians?

A) oropharynx.
B) nasopharynx.
C) pharynx.
D) laryngopharynx.


Ans: C) pharynx.

Biology & Microbiology

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Carbon dioxide, which is a breakdown product of the pesticide, is likely used by the bacteria

for which of the following?

a. an energy source b. cell structure c. to carry genetic information d. both an energy source and cell structure

Biology & Microbiology

Bone plays a critical role in providing ____ for the blood

a. sodium and calcium ions b. magnesium and phosphate ions c. carbon dioxide d. phosphate and calcium ions e. calcium ions and oxygen

Biology & Microbiology

Meissner corpuscles are sensitive to deep pressure in the skin

____________________ Indicate whether the statement is true or false.

Biology & Microbiology

For a species with a haploid number of 23 chromosomes, how many different combinations of maternal and paternal chromosomes are possible for the gametes?

A) 23 B) 46 C) about 1000 D) about 8 million

Biology & Microbiology