ATI TEAS 7 science review

ATI TEAS 7 science review Related

Review ATI TEAS 7 science review related questions and content

What is the scientific term for the monthly cycle in females that prepares the body for potential pregnancy?

  • A. Ovulation cycle
  • B. Menstrual cycle
  • C. Implantation cycle
  • D. Gestation cycle
Correct Answer: B

Rationale: The correct answer is B: Menstrual cycle. The menstrual cycle is the scientific term for the monthly cycle in females that prepares the body for potential pregnancy. This cycle involves various phases, including the release of an egg from the ovary (ovulation), thickening of the uterine lining in preparation for a fertilized egg, and shedding of the uterine lining if pregnancy does not occur (menstruation). Choices A, C, and D are incorrect. Option A, Ovulation cycle, only refers to the specific phase of egg release from the ovary. Option C, Implantation cycle, pertains to the process of the fertilized egg attaching to the uterine wall. Option D, Gestation cycle, denotes the period of fetal development during pregnancy, which is distinct from the monthly cycle preparing the body for potential pregnancy.

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What is the formula to calculate kinetic energy?

  • A. Kinetic Energy = Mass Velocity
  • B. Kinetic Energy = Force Distance
  • C. Kinetic Energy = Power Time
  • D. Kinetic Energy = Potential Energy · Time
Correct Answer: A

Rationale: Kinetic energy is the energy an object possesses due to its motion. The formula to calculate kinetic energy is KE = 0.5 mass velocity^2, which can also be written as KE = mass (velocity)^2. Therefore, the correct formula is Kinetic Energy = Mass Velocity. Choice B is incorrect because it represents the work formula. Choice C is incorrect as it represents the formula for work done. Choice D is incorrect as it does not accurately represent the formula for calculating kinetic energy.

What property of a substance measures the amount of matter per unit volume?

  • A. Mass
  • B. Weight
  • C. Density
  • D. Volume
Correct Answer: C

Rationale: Density is the property of a substance that measures the amount of matter per unit volume. It is calculated by dividing the mass of an object by its volume. Mass refers to the amount of matter in an object, weight is the force of gravity acting on an object, and volume is the amount of space an object occupies. Therefore, in this context, density is the correct answer as it specifically relates to the concentration of matter within a given volume.

What is the purpose of the periosteum, the tough outer layer of bone?

  • A. Produces red blood cells
  • B. Provides protection and nourishment to bone
  • C. Forms the joint surface
  • D. Stores minerals
Correct Answer: B

Rationale: The periosteum, the tough outer layer of bone, serves the purpose of providing protection to the bone and nourishing it through the blood vessels it contains. It acts as a protective layer for the bone structures. Choices A, C, and D are incorrect because the periosteum does not produce red blood cells (which is the function of bone marrow), form joint surfaces (which is typically the role of articular cartilage), or store minerals (which is primarily done by bone tissue itself and not the periosteum).

Which hormone is responsible for the characteristic changes experienced during puberty, such as breast development and menstruation in females?

  • A. Follicle-stimulating hormone (FSH)
  • B. Luteinizing hormone (LH)
  • C. Estrogen
  • D. Progesterone
Correct Answer: C

Rationale: Estrogen is the hormone responsible for the characteristic changes experienced during puberty in females, such as breast development and menstruation. Estrogen plays a crucial role in the development of secondary sexual characteristics and the regulation of the menstrual cycle. Follicle-stimulating hormone (FSH) and luteinizing hormone (LH) are primarily involved in the regulation of the menstrual cycle and ovulation. Progesterone, on the other hand, is important for preparing the uterus for pregnancy and maintaining pregnancy, but it is not the primary hormone responsible for the changes seen during puberty in females.

What is the name of the microscopic filtering unit within the kidney responsible for waste removal and blood volume regulation?

  • A. Nephron
  • B. Ureteric bud
  • C. Renal pyramid
  • D. Glomerulus
Correct Answer: A

Rationale: The correct answer is A: Nephron. The nephron is the functional unit of the kidney responsible for waste removal and blood volume regulation. It is composed of several structures, including the glomerulus, Bowman's capsule, proximal convoluted tubule, loop of Henle, distal convoluted tubule, and collecting duct. The other options mentioned in the question (ureteric bud, renal pyramid, and glomerulus) are not the correct names for the microscopic filtering unit within the kidney. The glomerulus is a part of the nephron, specifically responsible for ultrafiltration in the initial stage of urine formation.

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