ATI TEAS 7 Science

Questions 173

ATI TEAS 7

ATI TEAS 7 Test Bank

ATI TEAS 7 Science Questions

Question 1 of 5

What type of bond connects amino acids to form proteins?

Correct Answer: B

Rationale: The correct answer is B: Peptide bond. A peptide bond is a covalent bond that connects amino acids in a protein chain. During protein synthesis, the carboxyl group of one amino acid reacts with the amino group of another amino acid, forming a peptide bond. This bond is crucial for the structural integrity and function of proteins. A: Covalent bonds are generic chemical bonds that can occur between any atoms, not specifically between amino acids in proteins. C: Ionic bonds involve the transfer of electrons between atoms with opposite charges, which is not how amino acids are connected in proteins. D: Hydrogen bonds are weak interactions between hydrogen and electronegative atoms, not the primary bond connecting amino acids in proteins.

Question 2 of 5

What step of the scientific method must come before generating a hypothesis?

Correct Answer: D

Rationale: The correct answer is D: Researching previous studies for background. Before generating a hypothesis, it is crucial to review existing research to build a foundation of knowledge. This step helps identify gaps in current understanding, refine research questions, and ensure the hypothesis is based on existing evidence. Collecting and organizing data (A) occurs after the hypothesis is formulated. Communicating results (B) is the final step after conducting experiments (C). Therefore, the correct order is researching previous studies (D), generating a hypothesis, conducting an experiment, collecting and organizing data, and finally communicating the results.

Question 3 of 5

Which part of the neuron is responsible for transmitting signals away from the cell body and toward other neurons or muscles?

Correct Answer: A

Rationale: The correct answer is A: Axon. The axon is responsible for transmitting signals away from the cell body towards other neurons or muscles. It is a long, slender projection of the neuron that carries electrical impulses known as action potentials. The axon is covered by the myelin sheath, which helps to speed up the transmission of signals. Summary: - B: Dendrite receives signals from other neurons and transmits them towards the cell body. - C: Synapse is the gap between neurons where neurotransmitters are released to communicate signals. - D: Myelin sheath insulates and speeds up signal transmission along the axon, but it is not responsible for transmitting signals itself.

Question 4 of 5

When sodium hydroxide (NaOH) reacts with hydrochloric acid (HCl), the resulting product is:

Correct Answer: A

Rationale: The correct answer is A: Hydrogen gas and sodium chloride (NaCl). When NaOH reacts with HCl, a neutralization reaction occurs, forming water and a salt. NaOH + HCl -> NaCl + H2O. Sodium chloride and water are the products formed in this reaction. Hydrogen gas is also produced as a byproduct. Choices B, C, and D are incorrect as they do not represent the correct products of the reaction based on the chemical equation.

Question 5 of 5

Bile, a yellowish-green fluid, is stored in the gallbladder and released into the small intestine during digestion. What is the primary function of bile in digestion?

Correct Answer: C

Rationale: The correct answer is C: Emulsify fats. Bile helps emulsify fats by breaking them down into smaller droplets, increasing the surface area for enzymes to digest fats. This aids in the absorption of fats and fat-soluble vitamins in the small intestine. Choice A is incorrect because bile does not break down carbohydrates. Choice B is incorrect as bile does not break down proteins. Choice D is incorrect because bile does not neutralize stomach acid; rather, it helps with fat digestion in the small intestine.

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