ATI TEAS 7
Chemistry
1. What is the periodic law?
- A. The statement that the properties of the elements are a periodic function of their atomic numbers.
- B. The statement that the elements can be arranged in a table in which elements with similar properties are grouped together
- C. The statement that the elements can be arranged in a table in which the atomic number of an element is equal to the number of protons in its nucleus
- D. The statement that the elements can be arranged in a table in which the atomic mass of an element is equal to the number of neutrons in its nucleus.
Correct answer: A
Rationale: The periodic law states that the properties of elements are a periodic function of their atomic numbers. This means that when elements are arranged in order of increasing atomic number, there is a periodic repetition of their properties. This forms the basis for the modern periodic table. Option B describes the periodic table itself, while options C and D do not accurately describe the periodic law.
2. The three main types of muscle tissue in the human body are:
- A. Smooth, cardiac, and voluntary skeletal
- B. Smooth, skeletal, and involuntary cardiac
- C. Voluntary smooth, cardiac, and skeletal
- D. Striated, non-striated, and epithelial
Correct answer: A
Rationale: The correct answer is A: Smooth, cardiac, and voluntary skeletal. Smooth muscle is found in the walls of internal organs and blood vessels, cardiac muscle makes up the heart, and voluntary skeletal muscle is attached to the bones and responsible for movement. Choice B is incorrect because cardiac muscle is involuntary, not voluntary. Choice C is incorrect because smooth muscle and cardiac muscle are involuntary, not voluntary. Choice D is incorrect because 'striated' and 'non-striated' refer to the appearance of muscle fibers, not the main types of muscle tissue in the body.
3. Fertilization, the fusion of sperm and egg, typically occurs in which part of the female reproductive system?
- A. Ovary
- B. Fallopian tube
- C. Uterus
- D. Vagina
Correct answer: B
Rationale: The correct answer is B: Fallopian tube. Fertilization usually occurs in the fallopian tube. After ovulation, the egg is released from the ovary into the fallopian tube where it can be fertilized by sperm. The fallopian tube provides the ideal environment for fertilization to take place before the fertilized egg travels to the uterus for implantation. The other options, such as the ovary, uterus, and vagina, do not typically serve as the site of fertilization. Therefore, the fallopian tube is the correct answer in this case.
4. What is the function of the epiglottis?
- A. Produces saliva
- B. Senses taste
- C. Prevents food from entering the windpipe
- D. Filters blood
Correct answer: C
Rationale: Rationale: The epiglottis is a flap of cartilage located at the base of the tongue that covers the opening of the windpipe (trachea) during swallowing to prevent food and liquids from entering the airway. This action ensures that food and liquids are directed to the esophagus and down into the stomach, rather than entering the respiratory system, which could lead to choking or aspiration pneumonia. The other options (A) Produces saliva, (B) Senses taste, and (D) Filters blood are functions of other structures in the body and are not related to the role of the epiglottis.
5. What is the unit of measurement for force in the International System of Units (SI)?
- A. Newton (N)
- B. Kilogram (kg)
- C. Joule (J)
- D. Meter per second squared (m/s²)
Correct answer: a
Rationale: Force is measured in Newtons (N) in the SI system.
6. Which sentence uses the correlative conjunction "either/or" correctly?
- A. You can either come to the party or stay home.
- B. Either she will go to the concert, or he will.
- C. I'm not sure whether I should go swimming or running.
- D. He likes both pizza and pasta, so he can have either.
Correct answer: A
Rationale: Option Aa uses "either/or" to present two exclusive options.
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