Use the table below to answer the question.
Which of the following conclusions is supported by the data?
Object |
Mass (g) |
Time of fall (sec) |
A |
5.0 |
2.0 |
B |
5.0 |
1.0 |
C |
30.0 |
0.5 |
D |
35.0 |
1.5 |
Objects A and B will fall at the same rate.
The greater the mass of an object, the faster it will fall.
The time of fall is independent of the mass of the object.
Air resistance could be greater for A than for B.
Correct Answer : D
Air resistance could be greater for A than for B.
Since both objects have the same mass but different times of fall, it suggests that there could be differences in air resistance affecting their fall rates. Object A took longer to fall, indicating that it might have experienced more air resistance compared to Object B.
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Correct Answer is B
Explanation
The doctor refuses to prescribe antibiotics to the patient because the illness is caused by a virus. The common cold is a viral infection of the upper respiratory tract. Antibiotics are not effective against viral infections and are only used to treat bacterial infections.
The other options are not correct because they do not accurately describe the cause of the common cold and sore throat. Fungus, protist, and bacteria are not the pathogens responsible for causing the common cold.
Correct Answer is C
Explanation
The organ that filters excess solutes from the blood is the kidney ¹. The kidneys are a pair of bean-shaped organs located on either side of the spine, just below the rib cage ². They are responsible for filtering waste products and excess fluid from the blood and excreting them in the form of urine ².
The other options are not correct because they do not accurately describe the organ that filters excess solutes from the blood. The stomach, spleen, and gallbladder do not filter excess solutes from the blood.
Correct Answer is B
Explanation
Given the new findings that worm infestation can relieve the effects of certain autoimmune disorders, the hypothesis should be modified to state that worm infestation reduces the severity of certain autoimmune disorders.
This option best reflects the new information and suggests a potential benefit of worm infestation in relation to autoimmune disorders. The other options do not accurately reflect the new findings and do not provide a clear modification to the hypothesis.
Correct Answer is B
Explanation
The correct answer is b. Spectrophotometer. A spectrophotometer is a tool that can be used to measure the turbidity of a liquid by measuring the transmission of light through the sample. Turbidity is a measure of the cloudiness or haziness of a liquid caused by the presence of suspended particles. A spectrophotometer measures the amount of light that passes through the sample and compares it to the amount of light that passes through a reference sample to determine the turbidity.
a. A centrifuge is a tool used to separate components of a mixture based on their densities, not to measure
turbidity.
c. A microdensitometer is a tool used to measure the optical density of an image, not to measure turbidity.
d. An electrophorometer is a tool used to separate charged particles based on their size and charge, not to measure turbidity.
Correct Answer is D
Explanation
The apocrine gland is a component of the integumentary system that secretes pheromones. Pheromones are chemical signals that are released by an individual and can affect the behavior or physiology of other individuals of the same species.
The other options are not components of the integumentary system that secrete pheromones. The fossa ovalis is a depression in the interatrial septum of the heart, the seminiferous tubule is a structure in the testes where sperm are produced, and the dermal papilla is a structure at the base of a hair follicle that provides nutrients to the hair.
Correct Answer is D
Explanation
Air resistance could be greater for A than for B.
Since both objects have the same mass but different times of fall, it suggests that there could be differences in air resistance affecting their fall rates. Object A took longer to fall, indicating that it might have experienced more air resistance compared to Object B.
Correct Answer is A
Explanation
To accurately measure the density of a series of small irregular solids made of plastic, wood, fiberglass, and glass, a student will need a graduated cylinder, water, and a weighing balance. The student can use the water displacement method to determine the volume of each solid by measuring the volume of water displaced when the solid is submerged in a graduated cylinder filled with water. The mass of each solid can be measured using a weighing balance. The density can then be calculated by dividing the mass by the volume.
The other options are not correct because they do not provide the necessary tools to accurately measure the density of the solids. A spectrophotometer is used to measure light absorption and is not necessary for measuring density. A graduated beaker is less accurate than a graduated cylinder for measuring volume. A Bunsen burner is used for heating and is not necessary for measuring density.
Correct Answer is C
Explanation
The correct answer is c.
The study does not indicate a causal relationship between the processes. A correlation between two processes means that there is a statistical relationship between them, but it does not necessarily imply causation. In other words, just because two processes are correlated does not mean that one causes the other.
b.The study does not indicate that Process A causes Process B.
b.The study can indicate whether Process A and B have a positive relationship if the correlation is positive.
d. The study can indicate whether Process A and B have a negative relationship if the correlation is negative.
Correct Answer is A
Explanation
The sequence of bases on the complementary strand of DNA would read5’AGCTAGCGT 3’ (Choice A). In DNA, the nitrogenous bases adenine (A) and thymine (T) pair together, and cytosine (C) and guanine (G) pair together. The complementary strand is also antiparallel to the original strand, meaning that it runs in the opposite direction with the 5' end matching up with the 3' end of the original strand.
The other options do not accurately represent the complementary sequence of bases or the antiparallel orientation of the strands.
BONUS:
Correct Answer is B
Explanation
Emphysema is a lung condition that is caused by damage to the alveoli, the tiny air sacs in the lungs where gas exchange occurs. When the alveoli are damaged, the body has difficulty exchanging oxygen and carbon dioxide. This can lead to shortness of breath and other respiratory problems. The other options are not directly related to the function of the alveoli or the effects of emphysema.
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