ATI TEAS 7
ATI TEAS 7 Version 1 Science Questions
Question 1 of 5
The triple point of a substance is the temperature and pressure at which the substance exists as which of the following?
Correct Answer: C
Rationale: The triple point is a specific condition where a substance can exist simultaneously in all three phases: solid, liquid, and gas. The other options do not accurately describe this state.
Extract:
Question 2 of 5
Which of the following is the process in which an ovarian follicle matures and releases a reproductive egg?
Correct Answer: B
Rationale: Ovulation is the correct answer as it is the process where an ovarian follicle matures and releases a reproductive egg. Menstruation refers to the shedding of the uterine lining, fertilization is the union of sperm and egg, and oogenesis is the formation of female gametes. Ovulation is a crucial step in the reproductive cycle as it allows for the release of a mature egg from the ovary, which can then potentially be fertilized during its journey through the fallopian tube. Understanding these definitions is essential for comprehending the sequence of events in the female reproductive system.
Question 3 of 5
What causes osteoporosis?
Correct Answer: B
Rationale: Osteoporosis is a condition characterized by reduced bone density and mass, leading to brittle bones. Osteoblasts are cells responsible for forming new bone tissue, while osteoclasts break down old or damaged bone. In osteoporosis, there is a decrease in osteoblast activity, causing a net loss of bone as the breakdown surpasses formation. Meanwhile, osteoclast activity remains relatively stable. This imbalance between bone formation (osteoblast activity) and bone resorption (osteoclast activity) contributes to the development of osteoporosis by reducing bone strength and increasing susceptibility to fractures.
Question 4 of 5
Which of the following physiological responses is caused by the release of anti-diuretic hormone?
Correct Answer: D
Rationale: The correct answer is D: Increase in water reabsorption in the collecting duct. Anti-diuretic hormone (ADH), also known as vasopressin, acts on the kidneys to increase water reabsorption in the collecting ducts, leading to the concentration of urine and conservation of water in the body. This hormone helps regulate water balance by decreasing urine output and increasing blood volume and pressure when needed.
Question 5 of 5
If a portion of a strand of DNA bases reads 5' AGCTAGCGT 3', what would the sequence of bases on the complementary strand read?
Correct Answer: C
Rationale: To determine the sequence of bases on the complementary DNA strand, you must apply the base pairing rules: adenine (A) pairs with thymine (T) and cytosine (C) pairs with guanine (G). The given original sequence is 5' AGCTAGCGT 3'. Consequently, the complementary strand will read 3' TCGATCGCA 5'. Each base on one strand corresponds with its complementary base on the other strand, forming a sequence that complements the original one.