Which of the following has the most similarity in nucleotide sequence?
A. homologous chromosomes
B. non-homologous chromosomes
C. sister chromatids
D. complementary strands of DNA
E. maternal and paternal versions of the
same chromosome
C
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Cross-bridges form between the contractile proteins of the muscle cell. The movement of cross-bridges shortens the muscle fiber. What two proteins participate in cross-bridge formation?
A. actin and myosin B. troponin and titin C. titin and myosin D. titin and actin
What is the main mechanism that results in evolution?
What will be an ideal response?
What is MRSA?
A) tuberculosis bacteria resistant to antibiotics B) any bacteria resistant to antibiotics C) antibiotics used as a last resort for resistant bacteria D) a form of skin bacteria that's resistant to methicillin
Why does the relationship between metabolic rate and temperature exist?
A) Cellular respiration requires organisms to take in heat energy. B) A by-product of cellular respiration is heat. C) Cellular respiration causes the body to cool because all the energy is used to make ATP.