Which of the following organelles deals with the removal or excess water and intake of needed water?
A. Macronucleus
B. Oral Groove
C. Contractile vacuole
D. Mitochondria
Ans: C. Contractile vacuole
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When a polypeptide is being assembled, the bond that forms between a newly added amino acid and the previous amino acid in the chain is a _________ bond.
A. hydrogen B. hydrophobic C. terminal D. phosphodiester E. peptide
The enzymes and electron carriers involved in electron transport and oxidative phosphorylation are located in the ________ membrane of the mitochondrion.
A. outer B. inner C. inner and outer D. neither inner nor outer
Regions above or below the optimal range of an environmental variable are called:
a. zones of stress. b. tolerance zones. c. optimal range areas. d. None of the above. e. b and c only.
The antibiotic erythromycin works by inhibiting the movement of ________ along the _________. Fill in the blank(s) with the appropriate word(s)