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.

Therefore, the Correct Answer is A.

Q #1: Which of the following is true regarding adipocytes?

A. They are involved in the secretion of glucose.

B. They are responsible for storing the fat that is found in adipose tissue

C. They are critical in the digestive breakdown of fat

D. They are the foundational element of muscles

Answer Explanation

Adipocytes are primarily seen in adipose or fat tissue. Their primary function is the storage of fat Adipocytes play a crucial role in maintaining proper energy balance, storing calories in the form of lipids, and mobilizing energy sources in response to stress. They are not involved in the digestion of fat or the secretion of glucose, nor are they the foundational element of muscles
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: Given that there are over 100 million residential addresses in the United States, which of the following best describes a flaw of this survey as it is described?

A. There were not enough age groups to show a trend based on age.

B. The addresses were chosen randomly rather than strategically

C. The distribution of ages in the sample did not reflect the actual population

D. Each response represents only one person per address

Answer Explanation

While the random selection and large number of surveys sent out were a good start, to truly study the relationship between age and screen usage, it would have been better to have a few more age groups or just a direct age value from each participant rather than four large categories. As far as whether the age distribution accurately reflected the population, we don't have enough information to say if that was a problem or not. Also, the fact that each response is from just one person at the address is not a flaw but a reasonable way to get a good variety of responses

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Which of the below is the best definition for the term circulation?

More Questions on TEAS 7 Science

Q #1: Which of the following is true regarding adipocytes?

Answer Explanation

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

Answer Explanation

Q #3: Given that there are over 100 million residential addresses in the United States, which of the following best describes a flaw of this survey as it is described?

Answer Explanation

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