Which system produces red blood cells?
a. endocrine
b. skeletal
c. muscular
d. defense
e. integumentary
B
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Which of the following forms of communication do not rely on vision?
a. tactile b. pheromones c. mutualism d. both tactile and pheromones
Plants’ genes are found in ____
a. nuclear DNA b. mitochondrial and nuclear DNA c. mitochondrial, chloroplast, and nuclear DNA d. chloroplast and nuclear DNA e. mitochondrial and chloroplast DNA
Which one of the following components of blood increase in number in response to the presence of an infectious agent?
A) clotting factors B) albumins C) white blood cells D) red blood cells E) platelets
A researcher observed a reduction in the number of chromosomes during cell division for a microbe, he concludes that the microbe must be
A. Prokaryotic B. Eukaryotic C. a virus D. An archaean