Changes in temperature and pH can decrease an enzymes activity by breaking ________.
A. chemical bonds.
B. covalent bonds.
C. ionic bonds.
D. hydrogen bonds.
E. none of the above is correct.
Answer is D. hydrogen bonds.
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Which of the following is/are a benefit of genetic testing? Select all correct choices
A. Newborns can be screened for treatable diseases. B. Individuals can find out whether or not they carry harmful recessive alleles. C. Adults can find out whether or not they have specific risk factors for some diseases. D. Physicians can use the results of genetic testing to engineer drugs specific for an individual's genotype. E. None of these.
Which of the following describes the focus of Mendel’s work in genetics?
a. inherited traits that appeared to be a blending of two genes b. inherited traits with distinct, distinguishable patterns c. inherited traits that were no longer recessive d. inherited traits with only minor differences
The cardiovascular system is highly protected from microbial infection because
A. it is so close to the skin that even minor injuries could lead to major infection. B. it is the only body system that has no normal microbiota. C. it is the only body system that is liquid-based, i.e., with blood. D. failure to do so will result in a systemic infection.
Which of the following statements is true regarding hand washing?
A) Hand washing should be done frequently by patients. B) Frequent and proper hand washing should be routinely done by patients and by healthcare workers, both prior to and after interaction. C) Hand washing should be done before and after patient interaction. D) Hand washing should be done frequently by healthcare workers