Question: A pudding recipe for 50 people calls for 4 cups of sugar. Each bag of sugar contains 6 cups. How many bags of sugar will be needed to make this recipe for 300 people?
Answer Options:
4 bags
13 bags
4 bags
8 bags
Answer: 4 bags
Question: The hypotenuse (side C) of a triangle is 13 inches long. Which of the following pairs of measurements could be correct for the lengths of the other two sides of the triangle?
Answer Options:
2.5 inches, 4 inches
2.5 inches, 6 inches
5 inches, 12 inches
5 inches, 8 inches
Answer: 5 inches, 12 inches
Question: An employee discovers that 0.0025 of all products produced at a factory contain defects. Which of the following percentages does this represent?
Answer Options:
25%
0.025%
0.25%
2.5%
Answer: 0.25%
Question: To determine the insurance premium of a car, an insurance company considers the following determinants: the age of the car, the model of the car, and the mileage of the car. Which of the following is the dependent variable?
Answer Options:
Model
Age
Mileage
Insurance premium
Answer: Insurance premium
Question: The table below shows the miles driven as a function of gallons of gas used. When the function is graphed, what does the ordered pair (6, 144) represent?
Answer Options:
The driver can go 144 miles with 6 gallons of gas
The driver can go 24 miles in 1 hour
The driver can go 144 miles in 6 hours
The driver can go 6 miles with 144 gallons of gas
Answer: The driver can go 144 miles with 6 gallons of gas
Question: A farmer needs to buy fertilizer for his farmland. The instructions on the bag of fertilizer say 49.5 pounds of fertilizer is needed for 1 acre of land. The farmer buys 2,000 pounds of fertilizer. Which of the following is the approximate number of acres he can cover with the fertilizer he bought?
Answer Options:
40
125
1,000
300
Answer: 40
Question: Carbon has an atomic number of 6. Which of the following is true about the isotope C-12?
Answer Options:
C-12 possesses 7 neutrons and 5 electrons in its nucleus
C-12 possesses 7 protons and 5 neutrons in its nucleus
C-12 possesses 6 neutrons and 6 protons in its nucleus
C-12 possesses 6 protons and 6 electrons in its nucleus
Answer: C-12 possesses 6 neutrons and 6 protons in its nucleus
Question: Which of the following best describes adaptive immunity?
Answer Options:
The body’s barrier defenses, such as mucous membranes and secretions
The initiation of internal defenses, such as phagocytes and natural killer cells
A response to specific traits of specific pathogens
The initiation of the inflammatory response
Answer: A response to specific traits of specific pathogens
Question: Which of the following describes why water has a concave, or downward-curving, meniscus when poured in a glass beaker?
Answer Options:
The adhesive forces with the glass are greater than the cohesive forces
The cohesive forces with the glass are greater than the adhesive forces
Glass has a higher density than water
Water has a higher density than glass
Answer: The adhesive forces with the glass are greater than the cohesive forces
Question: The following diagram summarizes the carbonic acid-bicarbonate ion buffer system of the blood: CO₂ + H₂O ↔ H₂CO₃ ↔ HCO₃⁻ + H⁺. Which of the following equations shows the reaction that takes place when there are excessive protons (H⁺) in the blood?
Answer Options:
H₂CO₃ → CO₂ + H₂O
HCO₃⁻ + H⁺ → H₂CO₃
H₂CO₃ → HCO₃⁻ + H⁺
CO₂ + H₂O → H₂CO₃
Answer: HCO₃⁻ + H⁺ → H₂CO₃
Question: A student investigating the importance of wavelengths above and below the visible spectrum for photosynthesis sets up an experiment as follows over a 2-month period, all with illumination at 1 meter distance from plants grown with the same soil and watering conditions: 3 Arabidopsis plants exposed to ultraviolet light (UV) 3 Arabidopsis plants exposed to infrared light (IR) 3 Arabidopsis plants exposed to white light At the end of the experiment, she finds that the IR treated plants are scorched, the UV treated plants have wilted, but the white light-treated plants are growing normally. Which of the following statements is most likely to be correct?
Answer Options:
Three plants do not provide sufficient replications to draw a conclusion
Wavelength of light is the only variable that has been changed between groups
The wavelength of light does not affect photosynthesis
Infrared light contains more energy than the other wavelengths
Answer: Three plants do not provide sufficient replications to draw a conclusion
Question: Which of the following substances is excreted by sweat glands in response to the breakdown of proteins and the formation of ammonia?
Answer Options:
Lysozymes
Urea
Water
Sebum
Answer: Urea
Question: Which of the following is a property of water?
Answer Options:
Water is made up of one molecule of hydrogen and two molecules of oxygen
Solid water is more dense than liquid water
Water dissolves polar and ionic compounds
Water requires less heat than ethanol to raise its temperature
Answer: Water dissolves polar and ionic compounds
Question: Which of the following is correct regarding the pH scale?
Answer Options:
A substance with a pH of 3 is 10 times more alkaline than a substance with a pH of 4
A substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4
A substance with a pH of 3 is two times more alkaline than a substance with a pH of 4
A substance with a pH of 3 is two times more acidic than a substance with a pH of 4
Answer: A substance with a pH of 3 is 10 times more acidic than a substance with a pH of 4
Question: A vasectomy is a procedure in which the vas deferens are cut. Which of the following describes why a vasectomy leads to infertility?
Answer Options:
The vasectomy blocks the movement of sperm from the epididymis into the urethra
The vasectomy blocks the movement of sperm from the ejaculatory duct into the bulbourethral gland
The vasectomy blocks the movement of sperm from the prostate gland to the bulbourethral gland
The vasectomy blocks the movement of sperm from a testis into the epididymis
Answer: The vasectomy blocks the movement of sperm from the epididymis into the urethra
Question: Which of the following occurs during inhalation?
Answer Options:
Air moves from areas of low pressure to areas of high pressure
The ribcage lowers
The volume of the thoracic cavity decreases
The diaphragm moves downward
Answer: The diaphragm moves downward
Question: Which of the following is a function of a catalyst?
Answer Options:
To increase the activation energy of a reaction
To increase the product yield
To convert a nonspontaneous reaction to a spontaneous reaction
To increase the rate of a reaction
Answer: To increase the rate of a reaction
Question: Lifelong protection after exposure to a virus such as chickenpox is due to which of the following types of immunity?
Answer Options:
Nonspecific
Transplantation
Active
Innate
Answer: Active
Question: A scientist predicts that germinating beans will use more oxygen than non-germinating beans. This prediction is referred to as which of the following?
Answer Options:
A hypothesis
A conclusion
An observation
Data collection
Answer: A hypothesis
Question: The ideal gas law is represented by which equation?
Answer Options:
PV = nRT
P = nRT/V
n = PV/RT
RT = PV/n
Answer: PV = nRT
Question: Which of the following statements is true about the boiling point of water at sea level?
Answer Options:
It is 100°C
It is 212°F
It depends on the amount of water
It is lower than the boiling point at higher altitudes
Answer: It is 100°C
Question: Which type of reaction absorbs heat from the surroundings?
Answer Options:
Exothermic
Endothermic
Synthesis
Decomposition
Answer: Endothermic