Which of the following statements about photorespiration is INCORRECT?
A. Photorespiration tends to occur under dry and hot conditions.
B. It utilizes oxygen to produce a 3-carbon sugar precursor.
C. It liberates CO2.
D. It occurs in C3 plants.
E. It utilizes the enzyme PEP carboxylase rather than Rubisco to produce 3-phosphoglycerate.
E. It utilizes the enzyme PEP carboxylase rather than Rubisco to produce 3-phosphoglycerate.
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What structure helps mangroves with structural support and gas exchange?
a. Sediment traps b. Pneumatophores c. Mangal d. Chromatophores
Based on the figure, which of the following is true of HIV?
A. It uses reverse transcriptase from the cell to make DNA.
B. It replicates in the nucleus of cells.
C. It contains DNA as its genetic material.
D. It is an enveloped virus.
E. It lyses cells when it is released.
In spongy bone tissue the spaces are filled with
a. air. b. blood. c. cartilage. d. marrow. e. lymph.
Which of the following statements regarding repetitive DNA is false?
A) Repetitive DNA is usually found between genes. B) Repetitive DNA is identical in all humans. C) Repetitive DNA is usually repeated multiple times in the genome. D) Repetitive DNA can show great variation among individuals.