1. Which of the following structures in the male reproductive system secretes a fluid that nourishes and protects sperm?
A) Urethra
B) Prostate gland
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C) Vas deferens
D) Epididymis - correct answer B) Prostate gland
2. Which of the following parts of the central nervous system releases chemicals that regulate the pituitary gland?
A) Cerebellum
B) Hypothalamus
C) Spinal cord
D) Thalamus - correct answer B) Hypothalamus
3. Which of the following body systems is the primary system involved in preventing an infection when a cut in the skin allows bacteria to enter the body ?
A) The immune system
B) The endocrine system
C) The excretory system
D) The circulatory system - correct answer A) The immune system
4. Which of the following skin layers contains dead cells?
A) Papillary layer
B) Stratum basale
C) Stratum corneum
D) Reticular layer - correct answer C) Stratum corneum
5. Which of the following statements describes how bile salts aid during digestion?
A) Decrease the size of starches to aid in digestion
B) Increase the size of fat droplets to aid in digestion
C) Increase the size of starches to aid in digestion
D) Decrease the size of fat droplets to aid in digestion - correct answer D) Decrease the size of fat droplets to aid in digestion
6. When experimental results seem to only partly support a hypothesis, a researcher should consider which of the following?
A) Formulating a scientific law
B) Manipulating the data
C) Exploring alternative explanations
D) Accounting for other researchers biases - correct answer D) Accounting for other researchers biases
7. Which of the following stem cells can differentiate into the largest number of different cell types?
A) Somatic
B) Unipotent
C) Oligopotent
D) Pluripotent - correct answer D) Pluripotent
8. Scientists rely on which of the following to provide critical feedback when revising scientific explanation?
A) Peer review
B) Null hypothesis
C) Dogma
D)Opinion - correct answer A) Peer review
9. Which of the following organs releases bicarbonate as response to the release of secretin by
the duodenum?
A) Gallbladder
B) Spleen
C) Pancreas
D) Liver - correct answer C) Pancreas
10. emphysema caused by damage to alveoli from toxins and pollutants is likely to result in the
body having difficulty performing which of the following actions ?
A) Releasing histamine and acetylcholine
B) Producing enzymes
C) Absorbing food
D) Exchanging oxygen and carbon dioxide - correct answer D) Exchanging oxygen and carbon dioxide
11. Which of the following properties of water explains its solvent abilities for certain
substances?
A) High surface tension
B) Kinetic energy of liquid water molecules
C) High specific heat
D) Polarity of water molecules - correct answer D) Polarity of water molecules
12. Which of the following pathways best represents the expected flow of blood from the human heart to an organ?
A) Blood pumped from the heart first enters arterioles that then merge to form arteries that deliver blood to the organ
B) Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries of the organ
C) Blood pumped from the heart first enters veins that then narrow to form venules that deliver blood to arteries of the organ
D) Blood pumped from the heart first enters arteries that then narrow to form veins that deliver blood to the organ - correct answer B) Blood pumped from the heart first enters arteries that then narrow to form arterioles that deliver blood to capillaries of the organ
13. Using the equation pH= - log [H+], a solution with a [H+] = 10^9 M has a pH of which of the following?
A) 1
B) 9
C) 10
D) 5 - correct answer B) 9
14. Which of the following types of bonds link base pair nucleotides within a double strand of
DNA?
A) Covalent
B) Peptide
C) Ionic
D) Hydrogen - correct answer D) Hydrogen
15. Metabolism is known as which of the following types of respiration?
A) Pulmonary
B) External
C) Cellular
D) Internal - correct answer C) Cellular
16. Which of the following regions of the body are the tibia and fibula?
A) Tarsal
B) Antecubital
C) Crural
D) Coxal - correct answer C) Crural
17. Which of the following digestive system structures releases sodium bicarbonate into the small intestine, resulting in a change in the pH of chyme from acidic to basic?
A) Gallbladder
B) Pancreas
C) Liver
D) Appendix - correct answer B) Pancreas
18. A cell is placed in a hypertonic solution. Which of the following describes the resulting osmosis?
A) There is a net flow of water into the cell
B) The net flow of water into and out of the cell is zero .
C) There is no flow of water.
D) There is a net flow of water out of the cell. - correct answer D) There is a net flow of water out of the cell.
19. Which of the following elements has the smallest atomic radius?
A) Si
B) C
C) Ge
D) Sn - correct answer B) C
20. An efficient way to block protein synthesis is by inhibiting which of the following?
A) Ribosomes
B) Glyoxysomes
C) Apoplasts
D) Lysosomes - correct answer A) Ribosomes
21. A student conducts an experiment in which he dissolves 1.0 grams () each of several substances in 50 millimeters (mL) of water. He has 12 identical plastic cups of water. He places 1.0 g of salt into three of the cups,1.0 g of sugar into three of the cups, and 1.0 g of baking soda into three of the cups. The three remaining cups contain only water. He places all the cups in a freezer and records the temperature of the water in each cup every 15 minutes for 4 hours .
Which of the following questions is the student most likely investigating?
A) How does the volume of water affect the rate at which it cools ?
B) What effect does cooling have on the solubility of different solutes ?
C) How is the cooling rate of water affected by different solutes ?
D) What effect do different concentrations of solute have on the freezing point of water ? - correct answer C) How is the cooling rate of water affected by different solutes ?
22. In a plant in which fuzzy leaves (F) are dominant smooth leaves (f), which of
following crosses will produce only offspring with smooth leaves?
A) FF X FF
B) Ff X Ff
C) ff X ff
D) Ff X ff - correct answer C) ff X ff
23. Which of the following is a function of the circulatory system?
A) To manufacture antibodies
B) To break down toxins
C) To produce insulin
D) To transport hormones - correct answer A) To manufacture antibodies
24. In a double circulation system, which of the following describes a possible pathway of blood flow through the pulmonary circulatory system?
A) Oxygenated blood flows toward the heart from the lungs.
B) Deoxygenated blood flows from organs and tissues of the body to the heart.
C) Oxygenated blood flows throughout the body .
D) Deoxygenated blood flows from the lungs to the heart - correct answer A) Oxygenated blood flows toward the heart from the lungs.
25. A doctor explains that a patient has pulled a muscle in his back. Which of the following
could injured in a patient's back?
A) Latissimus dorsi
B) Zygomaticus
C) Adductor magnus
D) Gastrocnemius - correct answer A) Latissimus dorsi
26. Which of the following hormones increases the heart rate in response to stress?
A) Epinephrine
B) Insulin
C) Testosterone
D) Glutamate - correct answer A) Epinephrine
27. Histones are proteins associated with which of the following?
A) Sperm cells
B) DNA
C) Hair follicles
D) Blood - correct answer B) DNA [Show Less]