Although common in the past, today
microbial mats develop ONLY in aquatic environments where
a. sulfide levels are low.
b. the temperature is elevated.
c. conditions restrict grazing and competition.
d. conditions are hypersaline.
Answer: C
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True or false. A benefit of starch being the storage molecule in plants is that starch is easy for plants to move throughout the plant body
A. true B. false
Which type of epithelial cell is modified for
diffusion? a. cuboidal b. simple squamous c. simple columnar d. stratified squamous e. stratified columnar
Sickle-cell disease is a disorder that is caused by
A. a single mutation on a single gene. B. a collection of mutations that span several different genes. C. a collection of genetic mutations and environmental factors. D. a collection of mutations on a single gene.
Why is chlorophyll green in colour?
a. because it can absorb portions of blue light b. because it can absorb some red light c. because it can absorb green light d. because it cannot absorb green light