#OF FILTERS MASS (g) TERMINAL VELOCITY (m/s) 1 1.01 1.74 2 1.99 2.48 3 3.02 3.04 4 4.0 3.50 5 5.01 3.80 A group of students perform an experiment to test terminal velocity, which is the greatest speed obtained by a falling object. The students dropped different numbers of coffee filters and measured the resulting terminal velocity. Which of the following conclusions is supported by the data in the following data table?

A. Terminal velocity is when the force of gravity is equal to air resistance.

B. Heavier objects take more time to reach terminal velocity.

C. The greater the number of filters, the smaller the terminal velocity

D. Heavier objects fall faster than lighter objects.

Answer Explanation:

Terminal velocity is the maximum speed achieved by an object freely falling through a gas or liquid. At terminal velocity, the forces acting on the object are balanced so it is no longer accelerating. Terminal velocity is achieved when the force of gravity is equal to air resistance. From the data table you provided, we can see that as the mass of the coffee filters increases, so does the terminal velocity. This means that heavier objects fall faster than lighter objects. Therefore, conclusion D is supported by the data in the table.

Therefore, the Correct Answer is D.

Q #1: Which of the following allows the AIDS virus, which contains RNA, to insert viral DNA into the DNA of a host T-cell after the AIDS virus enters the cell?

A. Reverse transcriptase, an enzyme encoded by the virus.

B. Receptor proteins located on the surface of the virus.

C. The phospholipids found on the envelope of the virus.

D. The protein that makes up the capsid of the virus.

Answer Explanation

Reverse transcriptase, an enzyme encoded by the virus. This enzyme can convert the viral RNA into DNA, which can then integrate into the host cell's genome and hijack its machinery to produce more viruses. The other options are not relevant to this process. Receptor proteins are involved in binding the virus to the cell membrane, but they do not insert viral DNA into the cell. The phospholipids and the protein capsid are structural components of the virus, but they do not have any enzymatic activity.
Q #2: Which of the following summarizes a change that takes place as a solid turns to a liquid?

A. Particles become less ordered.

B. Intermolecular forces between particles become stronger.

C. Particles move closer together.

D. Particles have a decrease in mobility.

Answer Explanation

When a solid turns into a liquid during the process of melting, the particles within the solid gain enough energy to overcome the attractive forces holding them in a fixed arrangement. As a result, the particles become less ordered and more mobile, transitioning from a rigid structure to a more fluid state.
Q #3: Which of the following statements best supports the hypothesis that viruses can cause cancer?

A. Cellular DNA has sequences related to viral sequences.

B. Cancerous and normal cells share genetic sequences.

C. Viruses and cancer cells both replicate rapidly.

D. Genes that regulate cell division are found in some viruses.

Answer Explanation

Viruses can cause cancer by inserting their genetic material into the host cell's DNA, disrupting the normal regulation of cell division and growth. This process is called viral oncogenesis. Some viruses, such as human papillomavirus (HPV) and hepatitis B virus (HBV), are known to cause certain types of cancer in humans. Genes that regulate cell division are found in some viruses. This statement implies that some viruses have the ability to alter the host cell's genes and induce cancerous changes.

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More Questions on TEAS 7 Science

Q #1: Which of the following allows the AIDS virus, which contains RNA, to insert viral DNA into the DNA of a host T-cell after the AIDS virus enters the cell?

Answer Explanation

Q #2: Which of the following summarizes a change that takes place as a solid turns to a liquid?

Answer Explanation

Q #3: Which of the following statements best supports the hypothesis that viruses can cause cancer?

Answer Explanation

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