When examining a mutant mouse, you notice that its skeletal muscle looks very uniform, lacking in striations. To figure out what the mutation is in this mouse, you would begin by looking at
A. sarcomere organization.
B. the retention of calcium in the endoplasmic reticulum.
C. tendons.
D. the blood vessels in the muscles.
E. the sheath around muscles.
A. sarcomere organization.
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Smooth muscles are NOT
a. striated and voluntary. b. isolated, spindle-shaped cells. c. found in the walls of hollow structures such as blood vessels and the stomach. d. involuntary and nonstriated. e. associated with the parasympathetic nervous system “rest and digest” phase
Which of the following would increase the rate of blood flow through a blood vessel?
A) increased pressure of the blood entering the vessel B) decreased radius of the vessel C) increased length of the vessel D) increased viscosity of the blood E) constriction of the blood vessel
The site of gravity reception in roots is the:a
root apical meristem. b. periderm. c. root epidermis. d. root cap. e. root hair.
Cells with no nucleus
a. prokaryotic b. eukaryotic