Multigene families are characterized by clusters of tandemly arranged unique pseudogenes organized as operons
Indicate whether the statement is true or false
FALSE
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Which of the listed statements describes the results of the following reaction? C6H12O6 + 6 O2 ? 6 CO2 + 6 H2O + Energy
A) C6H12O6 is oxidized and O2 is reduced. B) O2 is oxidized and H2O is reduced. C) CO2 is reduced and O2 is oxidized. D) C6H12O6 is reduced and CO2 is oxidized. E) O2 is reduced and CO2 is oxidized.
Which of the following comparisons between gap junctions and plasmodesmata is NOT true?
A. Both allow exchange of material between cells, but gap junctions allow larger-sized molecules to transfer between cells. B. Animal cells have gap junctions, and plant cells have plasmodesmata. C. In plasmodesmata, the plasma membranes of the connected cells are continuous, while in gap junctions, the plasma membranes of the connected cells remain distinct. D. Gap junctions connect cells directly at the plasma membranes, but plasmodesmata must also bridge the cell wall separating the two cells. E. All of the above statements are true.
Placing celery sticks in fresh water will make them more turgid and harder. This is because
A. the celery is hypotonic to fresh water. B. the celery is hypertonic to fresh water. C. the celery is isotonic to fresh water. D. water moves from the celery sticks into fresh water. E. salt moves from the water into the celery sticks.
Bonds in which two atoms share a pair of electrons are called ________ bonds
a. covalent b. ionic c. all of the choices d. hydrogen