Ionizing radiation dislodges electrons from molecules, strengthening DNA.
a. true
b. false
Answer: b. false
Biology & Microbiology
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During muscular contraction, cross-bridges form between _____ and _____ .
A. actin, myosin B. actin, tropomyosin C. myosin, troponin D. myosin, tropomyosin E. troponin, calmodulin
Biology & Microbiology
The systems that support and move the body are
A. skeletal and muscular. B. nervous and endocrine. C. circulatory and respiratory. D. digestive and circulatory. E. urinary and immune.
Biology & Microbiology
The final step in the scientific method for a scientist is ____
a. devising an experiment b. collecting data c. making observations d. report his or her results e. researching the literature for similar investigations
Biology & Microbiology
The seed coat is formed by the hardening of the
A. prothallus. B. embryo. C. ovule. D. endosperm. E. integument.
Biology & Microbiology