Which of the following is not an aspect that could result in physiological variation?
A) Gender
B) Age
C) These are all aspects that can cause physiological variation.
D) Environment
E) Physical activity
C
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Endocrine responses occur more slowly and last longer than neural responses
Indicate whether the statement is true or false
Which of the following ATP-dependent steps of the contraction-relaxation cycle could be accomplished with a non-hydrolyzable form of ATP such as ATP--S for example?
a. cocking of the cross-bridge in anticipation of the power-stroke b. release of actin by myosin c. sequestration of calcium into the sarcoplasmic reticulum d. All of these could be accomplished with ATP-?-S. e. None of these could be accomplished with ATP-?-S.
Compare the types of cells that lymphoid stem cells and myeloid stem cells produce
A) Lymphoid stem cells give rise to lymphocytes. Myeloid stem cells give rise to all the formed elements except lymphocytes. B) Lymphoid stem cells give rise to all the formed elements except lymphocytes. Myeloid stem cells give rise to lymphocytes. C) Lymphoid stem cells give rise to all of the white blood cells. Myeloid stem cells give rise to the red blood cells and platelets. D) Lymphoid stem cells give rise to all of the white blood cells and platelets. Myeloid stem cells give rise to the red blood cells. E) Lymphoid stem cells give rise to the white blood cells and the red blood cells. Myeloid stem cells give rise to the platelets.
What is the role of myoglobin in muscle contraction?
A. Creatine phosphate generator in muscle B. ATP carrier in muscle C. Blood carrier in muscle D. Oxygen carrier in muscle