What is a hypothetical explanation for an occurrence that is based on prior knowledge called?

A. Independent variable

B. Dependent variable

C. Trial

D. Hypothesis

Answer Explanation:

A hypothesis is the use of prior knowledge in order to provide a hypothetical explanation for why something may or may not occur. A hypothesis can be proved wrong or right based on the results of the experiment and repeated trials.

Therefore, the Correct Answer is D.

Q #1: What is the role of ribosomes?

A. Make proteins

B. Waste removal

C. Transport

D. Storage

Answer Explanation

A ribosome is a structure of eukaryotic cells that makes proteins.
Q #2: Which of the following are examples of homeostatic mechanisms?

A. Increasing heart rate when blood pressure is low, Consuming excess calories to gain weight

B. Lifting weights to increase muscle mass

C. Shivering when the body temperature falls

D. Shivering when the body temperature falls, Secreting insulin to decrease blood sugar concentration, Increasing heart rate when blood pressure is low

Answer Explanation

Homeostatic mechanisms are involuntary actions by organs, glands, tissues and cells to maintain balance within the body. For example, if a person becomes dehydrated, the kidneys will retain fluid by decreasing urine output.

Consuming excess calories and lifting weights are not involuntary actions, nor do they maintain the body in its baseline state. Rather, they are actions specifically taken to move the body away from its baseline.
Q #3: Which of the below is the best definition for the term circulation?

A. The transport of oxygen and other nutrients to the tissues via the cardiovascular system

B. The force exerted by blood against a unit area of the blood vessel walls

C. The branching air passageways inside the lungs

D. The process of breathing in

Answer Explanation

Circulation is transporting oxygen and other nutrients to the tissues via the cardiovascular system. Choice B refers to blood pressure. Bronchi are the branching airways inside the lungs, while inhalation refers to the process of breathing in.

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What is a hypothetical explanation for an occurrence that is based on prior knowledge called?

More Questions on TEAS 7 Science

Q #1: What is the role of ribosomes?

Answer Explanation

Q #2: Which of the following are examples of homeostatic mechanisms?

Answer Explanation

Q #3: Which of the below is the best definition for the term circulation?

Answer Explanation

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