In seed plants, the microspores become ___.

A. ovules
B. seeds
C. pollen grains
D. cones
E. sperm cells


Answer: C

Biology & Microbiology

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When a neuron is at rest

a. there is a voltage difference across the membrane of about 70 millivolts. b. the interior is negatively charged. c. it is not responding to a stimulus. d. the fluid outside the membrane has more sodium and less potassium than the cytoplasm. e. all of these occur.

Biology & Microbiology

Co-dominance

What will be an ideal response?

Biology & Microbiology

Below is a molecule of caffeine. Which of the following features are not present in a molecule of caffeine?


A) a carbonyl group
B) a carboxyl group
C) a methyl group
D) a double bond

Biology & Microbiology

Mitochondria do not participate in which function?

A) motility B) programmed cell death C) production of amino acids and vitamins D) production of ATP E) regulation of cell division

Biology & Microbiology