What is the term for all of the places on earth
in which life can be found?
a. biosphere
b. biogeography
c. lithosphere
d. hydrosphere
e. stratosphere
A
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Neurons that carry messages within the CNS are
(a) sensory. (b) motor. (c) interneurons. (d) autonomic.
Which of the following STDs are preventable through the use of a vaccine?
A. hepatitis A and HIV B. syphilis and vaginal infections C. HIV and gonorrhea D. hepatitis A and B E. hepatitis B and chlamydia
Which of the following is a symptom of vitamin A deficiency?
a) severe combined immunodeficiency disease (SCID) b) blindness c) anemia d) fast-flushing e) overstimulation of the immune system
Which organism(s) ferment milk lactose, producing acids that curdle the milk?
A) Streptococcus lactis and Lactobacillus B) Spirulina C) Propionibacterium D) Leuconostoc mesenteroides E) Saccharomyces cerevisiae