A gene is
A. a DNA sequence that contains the information for producing one type of protein.
B. the collection of all of the protein-encoding DNA sequences on a particular chromosome.
C. an amino acid sequence that contains the information for producing a particular DNA sequence.
D. a structure that contains chromosomes.
Answer: A
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Symphyses are a type of cartilaginous joint. All symphyses occur at the midline of the body, and not in the extremities
a. true b. false
Which of the following is not an example of a negative homeostatic mechanism in the human body?
A. Retention of fluid leading to retention of more fluid B. Secreting insulin after a meal to return blood sugar concentration toward normal C. Shivering when body temperature falls below normal D. Increasing heart rate and force of contraction when blood pressure falls
Pulmonary veins carry blood toward the left atrium of the heart
Indicate whether this statement is true or false.
The volume of blood ejected by each ventricle in one minute is called the ________.
A. cardiac output B. cardiac reserve C. afterload D. stroke volume E. preload