What is a source of omega-3-fatty acids?
a. nuts
b. olive oil
c. meat
d. fish
e. butter
ANSWER: d
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Epigenetic mechanisms of gene regulation involve: (Select all correct choices)
A. changes to DNA sequences. B. the way in which DNA is packaged within chromosomes. C. the way in which chromosomes are organized into genomes.
Which of the following is a type of reproductive
isolating mechanism? a. temporal isolation b. mechanical isolation c. behavioral isolation d. ecological isolation e. all of these
Proteolytic processing, chemical modification, and protein degradation are all methods of posttranslational regulation
mechanism. Indicate whether the statement is true or false.
Which of the following statements regarding Neisseria meningitidis is FALSE?
A) There are vaccines available to prevent infection with all strains. B) Up to 40% of the population are carriers. C) Humans are the only natural carriers. D) Transmission is via respiratory droplets. E) It often causes meningitis.