Which of the following is NOT a feature associated with filtration?
A. nitrocellulose or plastic membrane filters
B. sterilization of heat-sensitive materials
C. varying thicknesses of membrane filters used
D. use of HEPA filters to filter air
E. ability of some filters to trap viruses and proteins
Answer: C
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What occurs during leptotene of prophase I?
A. The homologous chromosomes recognize one another by synapsis. B. Crossing over occurs. C. The replicated chromosomes condense. D. The synaptonemal complex dissociates. E. None of the answers are correct.
Homeostasis is
a. the ability to sense and response to change b. maintaining an internal environment within parameters that favor survival c. essential for all living things d. not found in nonliving things e. all of these
The ________ were the flying reptiles of dinosaur times.
Fill in the blank(s) with the appropriate word(s).
Which section of the small intestine is devoted to absorbing water and the products of digestion into the bloodstream?
A. ileum B. jejunum C. duodenum