A(n) __________ consists of hardened parts inside the body. Fill in the blank(s) with the appropriate word(s)
ANSWER: endoskeleton
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In the Gulf of Mexico, red tides caused by the dinoflagellate Karenia brevis cause massive fish kills as well as respiratory problems in humans. As an environmental scientist, what would you suggest concerned citizens do to help prevent these red tides?
A. Purchase fuel-efficient vehicles B. Decrease the amount of artificial light in coastal areas C. Encourage sustainable fishing D. Reduce fertilizer use on lawns and gardens E. Participate in beach cleanup efforts
If the frequency of the recessive allele (q) for a particular gene in a population is .2, what percentage of
the individuals in the population will be heterozygotes for that gene (only two alleles present for that gene)?
a. .8 b. .2 c. .32 d. .16 e. .64
Which bacterium causes infections in many burn victims?
A) Moraxella catarrhalis B) Pseudomonas aeruginosa C) Escherichia coli D) Bartonella bacilliformis
The waterborne pathogen ________ causes acute gastroenteritis.
A. Hepatitis A virus B. Naegleria fowleri C. Norovirus D. Toxoplasma gondii E. Poliovirus