What is the advantage of excreting nitrogenous waste in the form of ammonia?
A) Ammonia is less toxic than uric acid.
B) Ammonia is less soluble than uric acid.
C) Ammonia excretion conserves energy.
D) Ammonia does not diffuse across cell membranes.
Answer: C
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The relative percentage of genes devoted to protein synthesis in small-genome organisms is high compared with that of large-genome organisms
Indicate whether the statement is true or false.
The human coccyx bone and muscles that move the human ear are ____
a. homologous structures b. comparative structures c. analogous structures
d. repetitive structures e. vestigial structures
During metaphase I of meiosis, homologous chromosomes can orient themselves such that one or the other will by chance go to a particular daughter cell in a process known as ________.
What will be an ideal response?
In a food chain consisting of phytoplankton ? zooplankton ? fish ? humans, the humans are
A) secondary consumers. B) tertiary consumers. C) quaternary consumers. D) primary producers.