which of the following statements about codons are true?

a) every codon codes for an amino acid
b) a codon is a three-base sequence of mRNA
c) the genetic code is expressed as a sequence of codons
d) a codon is a three-base sequence of tRNA


b) a codon is a three-base sequence of mRNA
c) the genetic code is expressed as a sequence of codons

Anatomy & Physiology

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Each gustatory cell extends ________ (called taste hairs) into the surrounding fluids through a narrow taste pore

A) microvilli B) villi C) papillae D) palpebra E) G proteins

Anatomy & Physiology

The thumb possesses a saddle joint where each articular surface has both a concave and a convex surface.

What will be an ideal response?

Anatomy & Physiology

If a bone fractured in the shaft, what part of the bone would be broken?

A) epiphysis B) diaphysis C) metaphysis D) articular cartilage

Anatomy & Physiology

Which of the following is NOT true of a myofibril?

A. Thin myofilaments consist of actin, troponin, and tropomyosin. B. Thick myofilaments consist of myosin. C. Elastic filaments are composed of titin. D. Myofibrils are composed of muscle fibers. E. All of these are true of myofibrils.

Anatomy & Physiology