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BIO 142 EXAM III PRACTICE QUESTIONS WITH CORRECT ANSWERS, Exams of Biology

Northern Virginia Community CollegeBiology

BIO 142 EXAM III PRACTICE QUESTIONS WITH CORRECT ANSWERS

Typology: Exams

2024/2025

Available from 06/08/2025

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BIO 142 EXAM III PRACTICE QUESTIONS WITH
CORRECT ANSWERS
1) Which is NOT correctly matched?
A. Class II MHC- CD4
B. Class II MHC- Cytotoxic T Cell
C. Class I MHC- Endogenous
D. Class II MHC- Exogenous -- Correct Answer ✔✔ B. Class II MHC-
Cytotoxic T Cell
2) Which cells release perforins to kill infected cells?
A. Helper T Cells
B. Cytotoxic T Cells
C. Regulatory T Cells
D. Hb's affinity for O2 w/ its state of saturation -- Correct Answer ✔✔ B.
Cytotoxic T Cells
3) Put the following in order:
A. Apoptosis
B. Co-stimulation
C. Antigen binding
D. Cloning cells -- Correct Answer ✔✔ C, B, D, A
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BIO 142 EXAM III PRACTICE QUESTIONS WITH

CORRECT ANSWERS

  1. Which is NOT correctly matched? A. Class II MHC- CD B. Class II MHC- Cytotoxic T Cell C. Class I MHC- Endogenous D. Class II MHC- Exogenous -- Correct Answer ✔✔ B. Class II MHC- Cytotoxic T Cell
  2. Which cells release perforins to kill infected cells? A. Helper T Cells B. Cytotoxic T Cells C. Regulatory T Cells D. Hb's affinity for O2 w/ its state of saturation -- Correct Answer ✔✔ B. Cytotoxic T Cells
  3. Put the following in order: A. Apoptosis B. Co-stimulation C. Antigen binding D. Cloning cells -- Correct Answer ✔✔ C, B, D, A
  1. Which is NOT true about the nose? A. Warms and humidifies air B. Is part of oropharynx C. Has conchae to increase turbulence of air D. Secretes lysozyme and defensins -- Correct Answer ✔✔ B. Is part of oropharynx
  2. Which process involves CO2 moving from tissue cells into capillaries? A. External respiration B. Internal respiration C. Pulmonary ventilation D. Transport of gases -- Correct Answer ✔✔ B. Internal respiration
  3. Put the following in order of ingoing airflow: A. Alveolar sacs B. Nasopharynx C. Bronchioles D. Respiratory bronchioles -- Correct Answer ✔✔ B, C, D, A
  4. Which structure provides an open airway and contains the epiglottis? A. Pharynx B. Esophagus C. Trachea D. Larynx -- Correct Answer ✔✔ D. Larynx
  5. Which is NOT correct about inspiration? A. Uses Boyle's law B. Is a passive process C. Volume increases, pressure decreases in lungs D. P atm > P pul -- Correct Answer ✔✔ B. Is a passive process
  1. Which is NOT true? A. Pons smooths out breathing during speech & exercise B. PO2 is controlled within +/- 3 mm Hg C. Drop in pH in CSF increases respiration rate & depth D. Emotions and pain affect hypothalamus to modify respiration -- Correct Answer ✔✔ B. PO2 is controlled within +/- 3 mm Hg
  2. Increasing ____________ will cause pH to ____________ which causes __________? A. PO2, drop, Bohr effect B. PO2, increase, Haldane effect C. PCO2, drop, Bohr effect D. PCO2, increase, Haldane effect -- Correct Answer ✔✔ C. PCO2, drop, Bohr effect
  3. Which is NOT mechanical digestion? A. Mastication B. Segmentation C. Pepsin D. Stomach churning -- Correct Answer ✔✔ C. Pepsin
  4. Which is NOT matched correctly? A. Mucosa- used for absorption B. Serosa- stratified squamous C. Submucosa- has enteric neurons to regulate gland activity D. Muscularis externa- has myenteric plexus -- Correct Answer ✔✔ B. Serosa- stratified squamous
  5. Which is NOT true? A. Salivary glands- controlled by facial and hypoglossal nerves

B. Chief cells release pepsinogen C. Deglutition center is in the medulla oblongata D. Tongue helps create bolus -- Correct Answer ✔✔ A. Salivary glands- controlled by facial and hypoglossal nerves

  1. Which is NOT true? A. Buccal phase of swallowing is voluntary B. Pyloric sphincter is between stomach and duodenum C. Sympathetic increase digestive activities D. The stomach creates chyme -- Correct Answer ✔✔ C. Sympathetic increase digestive activities
  2. Which is NOT correctly matched? A. Gastric phase- G cells release ACH B. Cephalic phase- smell, taste, , thought of food triggers gastric secretion C. Intestinal phase- Inhibitory: duodenum distends, inhibits stomach D. Gastric phase- serotonin increases stomach contractions -- Correct Answer ✔✔ A. Gastric phase- G cells release ACH
  3. Most of the digestion & absorption occurs in: A. Large intestine B. Small intestine C. Stomach D. Pancreas -- Correct Answer ✔✔ B. Small intestine
  4. Which has a capillary bed to absorb digested products? A. Microvilli B. Plicae circulares C. Villi D. Rugae -- Correct Answer ✔✔ C. Villi

C. Has voluntary internal sphincter D. Has slow, segmental haustral contractions every 30 minutes -- Correct Answer ✔✔ C. Has voluntary internal sphincter

  1. Which is NOT true for lipids? A. Building blocks for proteins B. Phospholipids- cell membrane C. Triglycerides- long term energy storage D. Have 9 calories per gram -- Correct Answer ✔✔ A. Building blocks for proteins
  2. Nutrients the body cannot make and has to be eaten are called? A. Basal B. Serous C. Monosaccharides D. Essential -- Correct Answer ✔✔ D. Essential
  3. Which vitamin is required for photoreceptor pigments, maintains epi membranes, and is an antioxidant? A. Vitamin A B. Vitamin B1 (thiamine) C. Vitamin B D. Folic acid -- Correct Answer ✔✔ A. Vitamin A
  4. Which mineral is used for blood pressure, water balance, and nerve functioning? A. Sulfur B. Calcium C. Magnesium D. Sodium -- Correct Answer ✔✔ D. Sodium
  5. A deficiency of which vitamin causes scurvy and delayed wound healing?

A. Vitamin E B. Vitamin C C. Vitamin B D. Vitamin K -- Correct Answer ✔✔ B. Vitamin C

  1. A deficiency in which mineral cause an enlarged thyroid called a goiter? A. Calcium B. Zinc C. Chromium D. Iodine -- Correct Answer ✔✔ D. Iodine
  2. A deficiency in which vitamin is NOT associated with nervous system problems? A. Vitamin K B. Vitamin E C. Vitamin B D. Vitamin B1 -- Correct Answer ✔✔ A. Vitamin K