Nitrogenous wastes are produced through the breakdown of which of the following?
A. proteins
B. glucose
C. lipids
D. carbohydrates
E. All of the answer options are correct.
A
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Most procaryotic cells reproduce by:
A) binary fission B) budding C) gamete production D) spore formation
Males are considered infertile if they do not produce sufficient numbers of normal, healthy sperm
Indicate whether the statement is true or false
In a frog embryo, gastrulation
A. is impossible because of the large amount of yolk in the egg. B. proceeds by invagination and involution as cells roll over the dorsal lip of the blastopore. C. occurs within the inner cell mass that is embedded in the large amount of yolk. D. produces a blastocoel displaced into the animal hemisphere. E. occurs along the primitive streak in the animal hemisphere.
How is a typical prokaryotic genome similar to a eukaryotic genome?
A. Both are composed of multiple, linear chromosomes. B. Both are composed of circular chromosomes. C. Both contain chromosome with a single origin of replication. D. Both are composed of DNA packaged in the nucleus. E. Both are composed of double-stranded DNA.