What is internal respiration?
A. the binding of oxygen to hemoglobin
B. exchange of oxygen and carbon dioxide at the tissue level
C. exchange of oxygen between the atmosphere and lungs
D. mitochondrial use of oxygen to produce energy
Ans: D. mitochondrial use of oxygen to produce energy
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Proteins synthesized by the endoplasmic reticulum become permanently separated from the cytosol as soon as they have been synthesized
Indicate whether the statement is true or false
Air moves into the lungs during inspiration due to the force of __________.
A. the diaphragm B. the abdominal muscles C. atmospheric pressure D. the external intercostal muscles
Define information processing
A) Information processing is the change in charge across the inner and outer membrane of a cell. B) Information processing is a temporary, localized change in the resting membrane potential of a cell. C) Information processing involves the release of neurotransmitters by the presynaptic cell. D) Information processing is the integration of stimuli by an individual cell. E) Information processing is transfer of neurotransmitters from the presynaptic cell to an effector cell.
Which statement correctly compares isotonic and isometric contractions?
A. Isotonic contractions involve increased tension in the muscle that results in movement while isometric contractions involve decreased tension in the muscle resulting in no movement. B. Isometric contractions involve increased tension in the muscle that results in movement, while isotonic contractions involve increased tension in the muscle resulting in no movement. C. Isotonic contractions involve increased tension in the muscle that results in no movement, while isometric contractions involve increased tension in the muscle that results in movement. D. Isotonic contractions involve increased tension in the muscle that results in movement, while isometric contractions involve increased tension in the muscle resulting in no movement.