Mometrix TEAS 7 science practice test

Mometrix TEAS 7 science practice test Related

Review Mometrix TEAS 7 science practice test related questions and content

Autoimmune diseases occur when the immune system mistakenly attacks healthy body tissues. What is a potential cause of autoimmune diseases?

  • A. Deficiency in essential vitamins and minerals
  • B. Exposure to environmental toxins
  • C. Breakdown in immune cell self-tolerance mechanisms
  • D. All of the above
Correct Answer: C

Rationale: Autoimmune diseases result from a breakdown in immune cell self-tolerance mechanisms, leading to the immune system mistakenly attacking healthy body tissues. While deficiencies in essential vitamins and minerals or exposure to environmental toxins can impact overall health, they are not direct causes of autoimmune diseases. Deficiency in essential vitamins and minerals may weaken the immune system, making it more susceptible to various health issues but does not directly cause autoimmune diseases. Exposure to environmental toxins can trigger immune responses, but autoimmune diseases specifically stem from the breakdown of self-tolerance mechanisms within immune cells. Therefore, the correct answer is a breakdown in immune cell self-tolerance mechanisms.

You may also like to solve these questions

What property of a wave determines its loudness in sound waves?

  • A. Amplitude
  • B. Wavelength
  • C. Frequency
  • D. Speed
Correct Answer: A

Rationale: The correct answer is Amplitude. Amplitude is the property of a wave that determines its loudness in sound waves. The greater the amplitude of a sound wave, the louder the sound will be perceived. Wavelength and frequency are related to the pitch of the sound, with wavelength affecting the tone quality and frequency determining the pitch. Speed, on the other hand, is a characteristic of how fast the wave travels through a medium and does not directly influence the loudness of the sound.

Which of the following is the main organ responsible for storing energy?

  • A. Liver
  • B. Heart
  • C. Kidneys
  • D. Adipose tissue
Correct Answer: D

Rationale: Adipose tissue, commonly known as body fat, is the main organ responsible for storing energy in the form of triglycerides. It serves as a reserve of energy that can be utilized when needed. The liver primarily regulates glucose levels and stores glycogen for short-term energy needs but is not the main organ for long-term energy storage. The heart's main function is to pump blood throughout the body and is not involved in energy storage. The kidneys are essential for filtering blood and maintaining fluid balance but are not responsible for storing energy.

What is the technical term for the free edges of your fingernails and toenails?

  • A. Lunula (The lunula is the white crescent moon shape at the base of the nail)
  • B. Matrix (The matrix is the area under the nail where new nail cells are produced)
  • C. Hyponychium (This is the skin under the free edge of the nail)
  • D. Free edge
Correct Answer: C

Rationale: The correct answer is C, hyponychium. The hyponychium is the skin under the free edge of the nail, responsible for sealing the nail to the fingertip and protecting the nail bed from bacteria and debris. The lunula (choice A) refers to the white crescent moon shape at the base of the nail. The matrix (choice B) is the area under the nail where new nail cells are produced. The free edge (choice D) is the part of the nail that extends beyond the fingertip or toe.

Which structure contains the genetic material (DNA) of the cell?

  • A. Cytoplasm
  • B. Nucleus
  • C. Cell wall (only present in plant cells)
  • D. Golgi apparatus
Correct Answer: B

Rationale: The nucleus is the organelle that contains the genetic material (DNA) of the cell. It acts as the control center of the cell, regulating gene expression and coordinating cellular activities. The cytoplasm is the fluid-filled space within the cell where organelles are suspended, but it does not contain the genetic material. The cell wall is a rigid structure found in plant cells that provides support and protection, but it does not house the DNA. The Golgi apparatus is involved in processing and packaging proteins for secretion, but it does not contain the genetic material of the cell.

Which property of a wave determines its energy?

  • A. Wavelength
  • B. Amplitude
  • C. Frequency
  • D. Velocity
Correct Answer: B

Rationale: The energy of a wave is determined by its amplitude, which is the measure of its maximum displacement from the equilibrium position. Waves with higher amplitudes carry more energy as energy is directly proportional to amplitude. Therefore, the correct answer is B) Amplitude.

Choice A (Wavelength) does not determine the energy of a wave; it is related to the spatial length between wave crests. Choice C (Frequency) is not the property that determines a wave's energy; it refers to the number of complete oscillations a wave undergoes in a given time. Choice D (Velocity) is the speed at which a wave propagates through a medium and is not directly related to its energy.

Copyright © 2025 Nokea. All rights reserved.