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Nursing Elites

ATI TEAS 7

Biology

1. What is the function of ribosomal RNA (rRNA)?

Correct answer: C

Rationale: Rationale: Ribosomal RNA (rRNA) plays a crucial role in forming the structural framework of ribosomes, which are the cellular organelles responsible for protein synthesis. Ribosomes consist of both protein and rRNA components, with rRNA providing the structural support necessary for the ribosome to function properly. This structural framework allows the ribosome to interact with messenger RNA (mRNA) and transfer RNA (tRNA) during the process of translation, where the genetic information encoded in mRNA is used to assemble proteins from amino acids. Therefore, the primary function of rRNA is to contribute to the structure and function of ribosomes, rather than directly carrying amino acids, reading the genetic code, or controlling the rate of protein synthesis.

2. Which sentence uses strong verbs to create a more vivid image?

Correct answer: C

Rationale: "Inched" creates a stronger image of the car's slow movement compared to "moved" or "drove."

3. Bile, stored in the gallbladder, aids in the digestion of:

Correct answer: C

Rationale: The correct answer is C: "Fats." Bile, produced by the liver and stored in the gallbladder, plays a crucial role in the digestion and absorption of fats. When you consume fatty foods, bile is released into the small intestine to help break down the fats into smaller droplets, making it easier for enzymes to digest them. This process allows the body to absorb essential fatty acids and fat-soluble vitamins. Carbohydrates are mainly digested by enzymes like amylase in the mouth and small intestine, while proteins are broken down by enzymes like pepsin and trypsin. Vitamins are not directly digested by bile but are absorbed along with fats in the small intestine. Therefore, the correct answer is C, as bile aids in the digestion of fats.

4. Which part of the brain is responsible for regulating body temperature, hunger, and thirst, and is considered a key player in the endocrine system?

Correct answer: c

Rationale: The correct answer is C: Hypothalamus. The hypothalamus is a small region in the brain that plays a crucial role in maintaining homeostasis by regulating body temperature, hunger, and thirst. It also serves as a key player in the endocrine system by controlling the release of hormones from the pituitary gland. The amygdala is responsible for processing emotions and memory, the hippocampus is involved in memory formation and retrieval, and the thalamus acts as a relay station for sensory information. Therefore, the hypothalamus is the most appropriate choice for the functions described in the question.

5. The process of a liquid changing into a gas is called:

Correct answer: A

Rationale: Evaporation occurs at any temperature, while boiling only occurs at the boiling point of the liquid.

6. Express 0.75 as a fraction.

Correct answer: B

Rationale: Decimals can be represented as fractions where the denominator is a power of 10 (in this case, 10 raised to the power of -1, or 1/10th). So, 0.75 is equivalent to 7/10. We can simplify this fraction by dividing the numerator and denominator by 5, resulting in 3/4.

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