27. Amino acids tend to diffuse from a blood capillary to the adjacent cell because
(1) this is the only direction they can move
(2) the brain directs the movement into cells
(3) the cell needs the amino acids to make
protein
(4) the concentration of amino acids is lower
in the cell

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.