Reflexes help to control
A) respiratory rate. B) digestive activities.
C) heart rate and blood pressure. D) all of the above.
(
Question 2) The skin is one of the larger organs in the body by weight.
Indicate whether the statement is true or false
(
Question 3) A DNA molecule is a double helix in which A pairs with C and T pairs with G.
Indicate whether the statement is true or false
(
Question 4) The sequence of information flow in response to biting into a slice of pizza is
A) impulse sent to CNS, sensory receptors activated, perception, sensation.
B) perception, sensation, impulse send to CNS, sensory receptors activated.
C) impulse sent to CNS, sensory receptors activated, sensation, perception.
D) sensory receptors activated, impulse sent to CNS, sensation, perception.
(
Question 5) Cells that support neurons are _________.
Fill in the blank(s) with correct word
(
Question 6) The nucleus is in the nucleolus.
Indicate whether the statement is true or false
(
Question 7) What is the correct sequence of events along an axon that follows a membrane
reaching threshold potential?
1. The membrane depolarizes.
2. Sodium channels open and sodium ions diffuse inward.
3. The membrane repolarizes.
4.
Potassium channels open and potassium ions diffuse outward.
A) 1, 2, 4, 3 B) 4, 1, 3, 2 C) 3, 2, 4, 1 D) 2, 1, 4, 3
(
Question 8) The synovial membrane reabsorbs fluid and may help remove substances from an
infected joint cavity.
Indicate whether the statement is true or false
(
Question 9) The portion of a DNA molecule that contains the genetic information for making a
protein is called a gene.
Indicate whether the statement is true or false
(
Question 10) Rigor mortis affects skeletal muscles a few hours after death, due to
A) a decrease in ATP and increased permeability to calcium.
B) an increase in ATP and decreased permeability to calcium.
C) an increase in ATP.
D) impulses that produce sustained contractions.
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