A deficiency of which mineral produces a goiter in humans?

a. calcium
b. iodine
c. magnesium
d. manganese
e. zinc


B

Biology & Microbiology

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In your Drosophila laboratory, you find a larva that is missing segments Lb, T1, T2, and T3. This larva probably has a mutation in a ___________ gene.

A. pair-rule B. gap C. maternal effect D. segment-polarity E. gap or segment-polarity

Biology & Microbiology

Based on the pollen to ovule ratios, which statement appears to be true?

a. Species A probably distributes its pollen via the wind. b. Species B probably distributes its pollen via the wind. c. The pollen from species B is probably distributed by animals. d. Both species probably distribute their pollen via the same method

Biology & Microbiology

The chemical reactions in cells are called ____

a. substrate b. coenzymes c. receptor sites d. metabolism e. active site

Biology & Microbiology

What is the difference between a totipotent stem cell and a pluripotent stem cell? What piece of evidence would you

need to distinguish them? What will be an ideal response?

Biology & Microbiology