The plant hormone that promotes cell division in
roots and shoots is
a. auxin.
b. gibberellin.
c. cytokinin.
d. abscisic acid.
e. ethylene.
Answer: c
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Microbes can utilize only carbohydrates for energy production.
Answer the following statement true (T) or false (F)
Restriction enzymes
a. produce staggered cuts in DNA that are often useful in splicing genes. b. are very specific in their action. c. are natural defense mechanisms in bacteria that destroy foreign DNA introduced by viruses. d. are used along with ligases and plasmids to produce DNA libraries. e. are all of these.
________ acts on proteins to produce peptides which are later broken down into ________ in the small intestine.
A. Pepsin; fatty acids B. Pepsin; amino acids C. Salivary amylase; amino acids D. Maltase; glucose
A microbiologist is attempting to check for the presence of Mycobacterium tuberculosis in a sputum sample. This particular bacterium, if present, would have a particularly impervious outer wall. What type staining technique might be used to check for this bacterium?
A) Gram stain B) simple stain C) negative stain D) acid-fast stain