ATI TEAS 7
Biology
1. What is the scientific name for the tear gland?
- A. Lachrymal gland
- B. Lacrimal sac
- C. Lacrimal duct
- D. Lacrimal papilla
Correct answer: A
Rationale: The lachrymal gland is the almond-shaped gland located above each eye, responsible for producing tears. Tears are a complex mixture of water, electrolytes, proteins, and other substances that help lubricate and protect the eyes from dryness and irritation.
2. How does an increase in temperature generally affect the solubility of most solid solutes in a liquid solvent?
- A. It increases solubility
- B. It decreases solubility
- C. It has no effect on solubility
- D. It depends on the nature of the solute
Correct answer: a
Rationale: In general, increasing temperature tends to increase the solubility of most solid solutes in liquid solvents. The other choices do not accurately describe the effect of temperature on solubility.
3. Which of the following is the smallest part of an element that can still be recognized as that element?
- A. Electron
- B. Proton
- C. Neutron
- D. Atom
Correct answer: D
Rationale: An atom is the smallest unit of matter that retains the chemical properties of an element. It is composed of a nucleus containing protons and neutrons, and electrons that orbit the nucleus. The number of protons in the nucleus determines the atomic number of the element, and the number of neutrons determines the isotope of the element.
4. The main purpose of using strong vocabulary in your writing is to:
- A. Impress the reader with your knowledge of complex words.
- B. Confuse the reader and make them think harder.
- C. Communicate your ideas clearly and precisely.
- D. Shorten your sentences and save space.
Correct answer: C
Rationale: While using complex vocabulary can showcase knowledge, the primary goal is to ensure the reader understands your message. Precise words eliminate confusion and ambiguity.
5. What is the main function of peroxisomes in the cell?
- A. To break down hydrogen peroxide
- B. To synthesize lipids and other cellular components
- C. To package and transport proteins
- D. To store genetic material
Correct answer: A
Rationale: Rationale: Peroxisomes are membrane-bound organelles found in eukaryotic cells that contain enzymes involved in various metabolic processes. One of the main functions of peroxisomes is to break down hydrogen peroxide, a toxic byproduct of metabolism, into water and oxygen through the action of the enzyme catalase. This process helps protect the cell from oxidative damage caused by hydrogen peroxide. While peroxisomes are involved in other metabolic functions such as lipid metabolism and the synthesis of bile acids, their primary role is the breakdown of hydrogen peroxide.
6. A patient's temperature is 98.6 degrees Fahrenheit. What is their temperature in degrees Celsius (1°F = 5/9°C)?
- A. 32°C
- B. 37°C
- C. 41°C
- D. 45°C
Correct answer: A
Rationale: Subtract 32 from the Fahrenheit temperature (98.6°F) and then multiply by 5/9 to get 37°C.
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