a farmer had about 150 bags of potatoes on his trailer each bag contained from 23 to 27 pounds of potatoes which is the best estimate of the total num

ATI TEAS 7

TEAS Practice Math Test

1. A farmer had about 150 bags of potatoes on his trailer. Each bag contained from 23 to 27 pounds of potatoes. What is the best estimate of the total number of pounds of potatoes on the farmer’s trailer?

A. 3,000 pounds
B. 3,700 pounds
C. 4,100 pounds
D. 5,000 pounds

Correct answer: B

Rationale: To estimate the total number of pounds of potatoes on the farmer's trailer, we can use the average weight of a bag of potatoes. The average weight is calculated by adding the minimum and maximum weights of the bags and dividing by 2: (23 + 27) / 2 = 25 pounds. Next, multiply the average weight by the total number of bags: 25 pounds/bag * 150 bags = 3,750 pounds. Therefore, the best estimate of the total number of pounds of potatoes on the farmer's trailer is 3,750 pounds. Choice A (3,000 pounds) is too low as it underestimates the total weight. Choice C (4,100 pounds) and Choice D (5,000 pounds) are too high as they overestimate the total weight.

2. Which hormone, produced by the pineal gland, plays a role in regulating sleep-wake cycles and is often associated with the body's internal circadian rhythm?

A. Melatonin
B. Serotonin
C. Dopamine
D. Endorphin

Correct answer: A

Rationale: Melatonin is the hormone produced by the pineal gland that plays a crucial role in regulating sleep-wake cycles and is associated with the body's internal circadian rhythm. Melatonin levels typically rise in the evening, signaling to the body that it is time to sleep, and decrease in the morning, helping to wake up and feel alert. Serotonin, dopamine, and endorphins are neurotransmitters that serve different functions in the body and are not primarily responsible for regulating sleep-wake cycles. Serotonin is involved in regulating mood, appetite, and sleep. Dopamine plays a role in reward-motivated behavior and motor control. Endorphins are involved in pain regulation and are often referred to as the body's natural painkillers.

3. Which of the following is a synonym for 'reiterate'?

A. Refine
B. Relegate
C. Regale
D. Repeat

Correct answer: D

Rationale: The correct answer is 'D: Repeat.' 'Reiterate' means to say something again, making 'repeat' a synonym. 'Refine' means to improve, 'relegate' means to dismiss to an inferior position, and 'regale' means to entertain or amuse, which do not align in meaning with 'reiterate.'

4. Which of the following stimulates adaptive immunity?

A. Peptides
B. Phagocytes
C. Prions
D. Platelets

Correct answer: C

Rationale: The correct answer is C: Prions. Prions are infectious proteins that can stimulate an adaptive immune response by triggering the production of specific antibodies. Peptides are fragments of proteins and can be processed and presented by antigen-presenting cells to activate T cells, which play a role in adaptive immunity. Phagocytes, such as macrophages, are part of the innate immune system and are involved in engulfing and destroying pathogens, but they do not directly stimulate adaptive immunity. Platelets are primarily involved in blood clotting and are not directly related to stimulating adaptive immunity.

5. Which of the following uses correct spelling?

A. Leslie knew that training for the Philadelphia Marathon would take discipline and perseverance, but she was up to the challenge.
B. Leslie knew that training for the Philadelphia Marathon would take discipline and perseverance, but she was up to the challenge.
C. Leslie knew that training for the Philadelphia Marathon would take disiplin and perservearance, but she was up to the challenge.
D. Leslie knew that training for the Philadelphia Marathon would take discipline and perseverance, but she was up to the challenge.

Correct answer: D

Rationale: Option D correctly spells the words 'discipline' and 'perseverance.' The correct spelling of these words is crucial for effective communication and clarity in writing. In options A, B, and C, there are misspellings of 'discipline' and 'perseverance,' which can lead to confusion and impact the overall quality of the writing. Thus, option D is the correct choice as it accurately represents the correct spelling of both words.