Which is a correct statement about reptile reproduction compared to bird reproduction?
A. Birds are oviparous, reptiles are ovoviviparous.
B. Both newly hatched birds and reptiles require parental care.
C. Both exhibit external fertilization.
D. The eggs of both birds and reptiles have protective shells.
E. Male or female reptiles reproduce asexually; birds do not.
D. The eggs of both birds and reptiles have protective shells.
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HEPA filters are used to remove microbes from
A. air. B. liquids. C. medical instruments. D. human tissues. E. All of the choices are correct.
In double fertilization, one sperm fuses with the egg, and the other sperm fuses with the two antipodal nuclei. Indicate whether the statement is true or false
If an atom has the atomic number 11 and the atomic mass 22.99, it will have
A. 1 electron in the third energy level. B. 1 electron in the second energy level. C. 3 electrons in the fourth energy level. D. 1 electron in the first energy level.
The electron transport chain provides the energy for
A) oxidative phosphorylation. B) substrate-level phosphorylation. C) beta-oxidation. D) photophosphorylation. E) anabolic reactions.