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FREE AND STUDY GAMES ABOUT PHYSIOLOGY WK 1-6
EXAM QUESTIONS
Actual Qs and Ans Expert-Verified Explanation
This Exam contains:
-Guarantee passing score -16 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: The body naturally changes some set points to different values at different times of the day. These daily cyles are called
Answer:
circadian cycles.
Question 2: Bones act as a reservoir for which of the following minerals?
- Iron
- Calcium
- Phosphorus
- Both A and B
Answer:
Calcium
Question 3: Bones grow in diameter due to bone formation ________
Answer:
In the endosteum or periosteum Question 4: What term describes a signal traveling toward a particular center or point of reference?
Answer:
afferent Question 5: Of the pathogenic organisms, which of the following are the most complex?
Answer:
Tapeworms Question 6: Which of the following is not a proteoglycan found in the matrix of connective tissue?A.Glucosamine
- Collagen
- All of the above are proteoglycans.
C.Hyaluronic acid
Answer:
Collagen Question 7: Homeostasis can best be described as:
Answer:
a state of relative constancy.Question 8: A membrane carrier structure attracts a solute to a binding site, changes shape, and releases the solute on the other side of the cell membrane. This describes the process of:
Answer:
carrier-mediated transport.
Question 9: During which phase of the twitch contraction is there a triggering of the release of calcium ions into the sarcoplasm?
Answer:
Latent period Question 10: To accomplish self-regulation, a highly complex and integrated communication control system or network is required. This type of network is called a(n)
Answer:
feedback control loop.
Question 11: Which of the following is not true of diffusion?
- Uses cellular energy
- Can occur in living and nonliving cells
- May occur both into and out of the cell
- Energy source is cellular
Answer:
Uses cellular energy Question 12: Negative-feedback mechanisms:
Answer:
minimize changes in blood glucose levels, maintain homeostasis, are responsible for an increased rate of sweating when air temperature is higher than body temperature.Question 13: Because negative feedback control systems oppose changes that are opposite in direction to the initial disturbance, they are
Answer:
slowed or maintained in the homeostatic range.Question 14: The impact of effector activity on sensors may be positive or negative. Therefore, homeostatic control mechanisms are categorized as
Answer:
organs that are directly influenced by physiological variables or mechanisms.
Question 15: All of the following occur as a result of meiosis except:
- chromosome number remains at 46.
- primitive sex cells become mature gametes.
- the cells become haploid.
- meiosis occurs in two steps.
Answer:
chromosome number remains at 46.
Question 16: Which is true about the sodium and potassium pump?
- Two sodium ions are taken into the cell.
- Three sodium ions are taken out of the cell.
- Three potassium ions are taken into the cell.
- Two potassium ions are taken out of the cell.
Answer:
Three sodium ions are taken out of the cell.
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