a neutral atom of which element has 2 electrons in the first shell and 6 electrons in the second shell of the electron cloud
Logo

Nursing Elites

ATI TEAS 7

ATI TEAS Practice Science Test

1. Which element's neutral atom has 2 electrons in the first shell and 6 electrons in the second shell of the electron cloud?

Correct answer: D

Rationale: The correct answer is Oxygen. Oxygen has a total of 8 electrons, with 2 in the first shell and 6 in the second shell. This configuration matches the description provided in the question. Choice A, Beryllium, has 2 electrons in total, so it cannot have 2 in the first shell and 6 in the second. Choice B, Carbon, has 6 electrons in total, so it also does not match the given electron distribution. Choice C, Helium, has only 2 electrons in total and therefore does not fit the electron configuration described in the question.

2. What is the main function of the skeletal system?

Correct answer: B

Rationale: The main function of the skeletal system is to provide structural support for the body, protect internal organs, facilitate movement, and produce blood cells in the bone marrow. Choice A, 'To regulate blood pressure,' is incorrect as blood pressure regulation is primarily controlled by the circulatory and endocrine systems. Choice C, 'To produce hormones,' is incorrect as hormone production is mainly carried out by the endocrine system. Choice D, 'To fight infection,' is incorrect as the immune system is responsible for fighting infections, not the skeletal system.

3. Which sentence uses parallel structure correctly?

Correct answer: B

Rationale: Parallel structure means using the same grammatical form for elements in a list. Option (B) uses parallel gerunds ('reading,' 'watching,' 'spending'), making it the correct choice. The other options have inconsistencies in the form of the listed activities, making them grammatically incorrect. Option (A) starts with 'I enjoy' but then switches to '-ing' verbs. Option (C) changes from 'like' to '-ing' verbs, breaking parallelism. Option (D) lists 'reading' correctly but then switches to singular nouns ('movies,' 'friends'), which is not parallel.

4. Fluorescent microscopy utilizes which property of certain molecules to create a visible image?

Correct answer: C

Rationale: Fluorescent microscopy relies on the property of certain molecules to fluoresce when exposed to specific wavelengths of light. When these molecules absorb light energy, they become excited and then emit light at a longer wavelength, producing a visible image. This emitted light is what is used to create the image in fluorescent microscopy, making option C, fluorescence emission, the correct answer. Staining properties (option A) are used to enhance contrast in microscopy but are not the primary mechanism in fluorescent microscopy. Light absorption (option B) is involved in the excitation of fluorescent molecules but is not the property used to create the visible image. Refraction (option D) is the bending of light as it passes through different mediums and is not the property utilized in fluorescent microscopy.

5. A patient is prescribed 5 mg of medication per kilogram of body weight. If the patient weighs 60 kg, how many milligrams of medication should the patient receive?

Correct answer: C

Rationale: The correct calculation to determine the medication dosage for a patient weighing 60 kg is: 5 mg/kg x 60 kg = 300 mg. Therefore, the patient should receive 300 mg of medication. Choice A (100 mg) is incorrect as it does not account for the patient's weight. Choice B (150 mg) is incorrect as it miscalculates the dosage. Choice D (400 mg) is incorrect as it overestimates the dosage based on the patient's weight.

Similar Questions

A woman wants to stack two small bookcases beneath a window that is 26 inches from the floor. The larger bookcase is 14 inches tall. The other bookcase is 8 inches tall. How tall will the two bookcases be when they are stacked together?
Which of the following substances is NOT a product of cellular respiration?
Which type of symbiosis benefits both organisms from the interaction?
What is involved in the involuntary reflex arc that withdraws your hand from a hot object?
What is the best definition of the word veritable?

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