The tube-like structures extending from these
bacterial cells to the underlying cells in the above
figure are used for
a. attachment.
b. locomotion.
c. whipping up proteins.
d. breathing.
e. communication.
Answer: a
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Which of the following is NOT associated with
the light-dependent reaction?
a. ATP b. thylakoids c. chlorophyll d. glucose e. water
Movable spines are found on ____ of the phylum Echinodermata
a. Ophiuroidea b. Echinoidea c. Asteroidea d. Crinoidea e. Holothuroidea
All of the following are examples of phenotypic traits except
A. morphology. B. physiology. C. sexual behavior. D. mutations. E. response to stimuli
Which of the following statements about lysosomes is false?
A) Lysosomes help to digest worn-out or damaged organelles. B) Lysosomes synthesize proteins from the recycled amino acids. C) Lysosomes fuse with food vacuoles to expose nutrients to lysosomal enzymes. D) Lysosomes destroy harmful bacteria engulfed by white blood cells.