ATI TEAS Science Questions

ATI TEAS Science Questions Related

Review ATI TEAS Science Questions related questions and content

Which of the following terms describes stem cells that have the ability to develop into any cell found in the human body?

  • A. Totipotent stem cells
  • B. Multipotent stem cells
  • C. Pluripotent stem cells
  • D. Hematopoietic stem cells
Correct Answer: A

Rationale: Totipotent stem cells have the unique ability to differentiate into any cell type in the human body and can generate a complete organism. They are considered the most versatile type of stem cells, capable of developing into all cell types, including extraembryonic tissues. Choice A, Totipotent stem cells, is the correct answer as it specifically describes stem cells with the broadest differentiation potential. Choice B, Multipotent stem cells, refers to stem cells that can differentiate into a limited range of cell types. Choice C, Pluripotent stem cells, can give rise to almost all cell types, but not the complete organism like totipotent stem cells. Choice D, Hematopoietic stem cells, are a type of multipotent stem cells that give rise to various blood cell types, but do not have the same broad differentiation potential as totipotent stem cells.

You may also like to solve these questions

What is a monohybrid cross, and what is the ratio of dominant to recessive gene manifestation?

  • A. A cross involving two traits, 9:3:3:1
  • B. A cross involving one trait, 3:1
  • C. A cross involving two traits, 1:2:1
  • D. A cross involving one trait, 1:1
Correct Answer: B

Rationale: A monohybrid cross is a genetic cross involving one trait. The ratio of dominant to recessive gene manifestation in the offspring is typically 3:1 when both parents are heterozygous. This ratio is the genotypic ratio, not just the phenotype ratio, where the dominant allele is present in 3 out of 4 offspring, and the recessive allele is present in 1 out of 4 offspring. Choice A is incorrect because it describes a dihybrid cross ratio. Choice C is incorrect as it represents the genotypic ratio for a monohybrid cross involving incomplete dominance. Choice D is incorrect as it does not reflect the typical ratio for a monohybrid cross.

Which plane divides the body into anterior (front) and posterior (back) halves?

  • A. Sagittal/Median Plane
  • B. Frontal/Coronal Plane
  • C. Transverse/Cross-Section Plane
  • D. Horizontal Plane
Correct Answer: B

Rationale: The correct answer is B - Frontal/Coronal Plane. This plane divides the body into anterior (front) and posterior (back) halves. The sagittal plane divides the body into left and right halves, the transverse plane separates the body into superior (upper) and inferior (lower) portions. The horizontal plane is not a standard anatomical term for body division and does not provide division into front and back halves.

Which hormone is produced by the pancreas to lower blood sugar levels?

  • A. Glucagon
  • B. Insulin
  • C. Adrenaline
  • D. Melatonin
Correct Answer: B

Rationale: The correct answer is B: Insulin. Insulin is produced by the pancreas and plays a crucial role in lowering blood sugar levels by promoting the uptake of glucose into cells for energy production or storage. Glucagon, which is also produced by the pancreas, functions to increase blood sugar levels by stimulating the release of stored glucose. Adrenaline, produced by the adrenal glands, is involved in the fight-or-flight response and does not directly regulate blood sugar levels. Melatonin, produced by the pineal gland, primarily regulates the sleep-wake cycle and is not involved in blood sugar level control.

What is the diastole cycle in the heart?

  • A. Relaxation of the heart
  • B. Contraction of the heart
  • C. Pulse rate of the heart
  • D. Blood circulation
Correct Answer: A

Rationale: The diastole cycle in the heart refers to the relaxation phase, where the heart chambers relax and fill with blood. This phase is crucial for the heart to refill and prepare for the next contraction (systole), which pumps blood out of the heart. Therefore, the correct answer is choice A, 'Relaxation of the heart.' Choices B, C, and D are incorrect in the context of cardiac physiology. Choice B, 'Contraction of the heart,' refers to systole, the phase of heart contraction. Choice C, 'Pulse rate of the heart,' is related to the number of heartbeats per minute, not the diastole cycle specifically. Choice D, 'Blood circulation,' is a broader term that encompasses the entire circulatory system rather than focusing on the heart's specific relaxation phase.

Which of the following compounds often contains a carboxyl group?

  • A. Carbohydrates
  • B. Glycolipids
  • C. Amino Acids
  • D. DNA
Correct Answer: C

Rationale: The correct answer is C: Amino Acids. Amino acids, the building blocks of proteins, contain both an amine group and a carboxyl group. The carboxyl group (-COOH) is crucial for the structure and function of proteins as it participates in peptide bond formation. Carbohydrates and DNA do not typically contain carboxyl groups as a functional group. Glycolipids consist of a carbohydrate chain linked to a lipid, but they do not inherently contain a carboxyl group.

Copyright © 2025 Nokea. All rights reserved.