In animals that display indeterminate development
A. early embryonic cells, if separated from the embryo, can develop into complete organisms.
B. bilateral symmetry cannot develop.
C. embryonic cells have a predetermined fate.
D. embryonic cells show spiral cleavage.
E. the blastopore develops into the mouth.
Answer: A
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A newly described bacterial species has been shown to use CO2 as its carbon source. Its energy source and its source of reducing power (electrons) are inorganic chemicals. Which term would best describe this nutritional type?
A. Chemolithoheterotroph B. Photolithoheterotroph C. Photoorganoheterotroph D. Chemolithoatotroph
A muscle can exert force while remaining the same length (e.g., When you lift a heavy bucket of cattle feed). This is known as:
A. isometric contraction. B. geometric contraction. C. isometric relaxation. D. shortening contraction.
Describe the docking and fusion of synaptic vesicles with the cell membrane. Describe the mechanisms by which tetanus toxin and botulinum toxin interfere with this process
What will be an ideal response?
Which kingdom contains "extremophiles"?
a. eubacteria b. archaebacteria c. fungi d. protista