In humans, taste buds lie mainly in tiny elevations called ____

a. stereocilia
b. ommatidia
c. ocelli
d. papillae
e. cilia


d

Biology & Microbiology

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Approximately how many people exposed to cholera bacteria actually become ill?

a. one in ten b. 100 in 500 c. three in five d. 50 in 100 e. just about everybody

Biology & Microbiology

The largest active carbon pool is

A) the atmosphere. B) the oceans. C) living organisms. D) dead organisms.

Biology & Microbiology

It is possible to take a mature fern frond and rub the circular brown growths on the lower surface over a wet plug of peat moss. Soon small heart-shaped green structures grow on the nutritious peat moss plugs. What has happened?

A. Spores released from the underside of the frond germinated on the peat plug and formed the gametophyte called a prothallus. B. Zygotes released from the bottom of the fern frond germinated on the peat plug and grew into gametophyte fiddleheads. C. Gametes released from the underside of the fern frond germinated on the peat plug and formed a sporophyte structure called an archegonium. D. Eggs and sperm released from the underside of the fern frond united on the peat plug and grew into sporophyte prothalli. E. Spores released from the underside of the fern frond germinated on the peat plug and formed sporophyte rhizomes that give rise to many indusium.

Biology & Microbiology

The effect of a competitive inhibitor can be reversed by ____.

a) increasing inhibitor concentration b) heating the reaction mixture c) changing the pH d) massaging the enzyme e) increasing substrate concentration

Biology & Microbiology