Which of the following has the highest photosynthetic efficiency in hot and dry environments?

A. C3 plants
B. C4 plants
C. plants undergoing photorespiration
D. plants that use oxygen to produce sugars
E. plants that only produce sugar in the dark


B. C4 plants

Biology & Microbiology

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The following bacterial species are all implicated in dental caries EXCEPT

A) Fusobacterium. B) Borrelia. C) Streptococcus. D) Lactobacillus.

Biology & Microbiology

When individuals have mitochondrial disorders, why are the skeletal and heart muscles and the brain

most often affected?

a. They are the most important organs. b. They have the highest energy needs. c. They are generally very fragile. d. They have fewer mitochondria in the cell. e. They are the most complex organs.

Biology & Microbiology

When she finds that the introduced strand separates into single-stranded RNAs, what other evidence of this single-stranded RNA piece's activity can she find?

A) She can measure the degradation rate of the remaining single strand. B) The rate of accumulation of the polypeptide encoded by the target mRNA is reduced. C) The amount of miRNA is multiplied by its replication. D) The cell's translation ability is entirely shut down.

Biology & Microbiology

Which of the following is not a way that humans have increased the carrying capacity of the environment?

a) agriculture b) using large amounts of natural resources c) domestication of animals d) use of language

Biology & Microbiology