the defining characteristic of an element is determined by the number of
Logo

Nursing Elites

ATI TEAS 7

TEAS 7 science practice

1. What determines the defining characteristic of an element?

Correct answer: C

Rationale: The defining characteristic of an element is determined by the number of protons in its nucleus, which is referred to as the atomic number. The number of protons uniquely identifies an element. The correct answer is choice C because the number of protons in the nucleus of an atom defines its elemental identity, as different elements have a unique number of protons. Neutrons and electrons do play essential roles in the atom, but they do not determine the defining characteristic of an element. Neutrons contribute to the stability of the nucleus and isotopes of an element, while electrons are involved in chemical bonding and the reactivity of an atom.

2. Which of the following lobes of the brain is primarily responsible for vision?

Correct answer: B

Rationale: The occipital lobe is primarily responsible for processing visual information. It contains the primary visual cortex, which plays a key role in interpreting visual stimuli. The frontal lobe is more associated with functions such as decision-making and problem-solving, making choice A incorrect. The parietal lobe is involved in processing sensory information but not specifically vision, making choice C incorrect. The temporal lobe is responsible for functions like memory and auditory processing, so choice D is also incorrect.

3. Examine the following decomposition reaction: ABC → ______. Which of the following is a possible set of products for this reaction?

Correct answer: C

Rationale: In a decomposition reaction, a single reactant breaks down into two or more products. For the decomposition of ABC, a plausible set of products is A + BC. This reaction represents the breakdown of ABC into two separate components: A and BC. The correct choice C aligns with the fundamental concept of decomposition reactions, where a compound disintegrates into simpler substances. Choices A, B, and D do not reflect a proper decomposition reaction as they do not demonstrate the breakdown of the original compound into distinct components.

4. The speaker addresses his audience as 'My Good Friends.' What kind of credibility does this salutation give to the speaker?

Correct answer: B

Rationale: The speaker's address of 'My Good Friends' implies a sense of warmth and familiarity, indicating that the speaker wants to establish a connection with the audience before delivering a serious speech. This type of salutation is often used by entertainers to engage the audience and create a friendly atmosphere conducive to effective communication. Choice A is incorrect because there is no indication of an employer-employee relationship. Choice C is incorrect as there is no indication of irony in the salutation. Choice D is incorrect as the salutation aims to create a connection rather than grab attention as a politician might.

5. Which hormone, produced by the pancreas, regulates blood sugar levels by promoting the uptake of glucose into cells?

Correct answer: A

Rationale: Insulin is the correct answer. It is produced by the pancreas and plays a crucial role in regulating blood sugar levels by facilitating the absorption of glucose into cells. When blood sugar levels are elevated, insulin is released to help cells utilize glucose for energy or store it for future use. Glucagon, choice B, is produced by the pancreas as well but has the opposite effect of raising blood sugar levels by releasing stored glucose into the bloodstream. Cortisol, choice C, is a hormone produced by the adrenal glands that is involved in the stress response and metabolism, not specifically in regulating blood sugar levels. Thyroxine, choice D, is a hormone produced by the thyroid gland that regulates metabolism but is not directly involved in the uptake of glucose into cells.

Similar Questions

What is the term for a repetitive, involuntary muscle contraction that can cause pain and stiffness?
Select the word from the following sentence that has more than one meaning: 'Javier was overjoyed when he finally finished his application for college.'
What is the difference between DNA and RNA?
Which of the following statements is an opinion?
Which of the following sentences contains a homophone?

Access More Features

ATI TEAS Premium Plus
$149.99/ 90 days

  • Actual ATI TEAS 7 Questions
  • 3,000 questions with answers
  • 90 days access

ATI TEAS Basic
$49/ 30 days

  • 3,000 Questions with answers
  • 30 days access

Other Courses