Water disinfection agents such as chlorine can easily inactivate viruses
Indicate whether the statement is true or false.
Answer: TRUE
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During enzyme-catalyzed reactions, substrate is a synonym for:
a. end product b. byproduct c. enzyme d. reactant e. cofactor
The letter “B” in the above figure represents
a. sclerenchyma fibers. b. parenchyma. c. xylem. d. epidermis. e. phloem.
Which of the following statements concerning Down syndrome is FALSE?
a. Down syndrome involves nondisjunction. b. Down syndrome individuals have 47 chromosomes per somatic cell. c. Down syndrome incidence increases with increasing material age. d. Down syndrome individuals have an extra chromosome 22. e. Down syndrome is variable in expression.
Using a microscope, a scientist examines a small single celled structure. She notes that the organism appears to be photosynthetic, and there is a defined structure containing the DNA. She concludes that she is observing an organism from the domain:
What will be an ideal response?