ATI TEAS 7
Biology
1. Identify the indirect object in the following sentence: "He gave his mother a bouquet of flowers."
- A. mother
- B. bouquet
- C. flowers
- D. gave
Correct answer: A
Rationale: The indirect object tells who or what benefits from the action of the verb.
2. What is the main function of the gallbladder?
- A. To store and concentrate bile
- B. To produce digestive enzymes
- C. To absorb nutrients
- D. To neutralize stomach acid
Correct answer: A
Rationale: Rationale: The gallbladder is a small organ located beneath the liver that plays a crucial role in the digestive system. Its main function is to store and concentrate bile, a digestive fluid produced by the liver. Bile is released from the gallbladder into the small intestine to help with the digestion and absorption of fats. The gallbladder acts as a reservoir for bile, allowing it to be released in a controlled manner when needed to aid in the digestion of fatty foods. Therefore, option A is the correct answer as it accurately describes the main function of the gallbladder.
3. Kidney stones are formed when:
- A. Excess water is not reabsorbed
- B. Minerals crystallize in the urine
- C. Electrolytes become too concentrated
- D. All of the above
Correct answer: B
Rationale: The correct answer is B: "Minerals crystallize in the urine." Kidney stones are formed when minerals in the urine combine and crystallize, forming solid masses. This process can occur due to various factors, such as high levels of calcium, oxalate, or uric acid in the urine. Options A and C are not directly related to the formation of kidney stones. Option D is incorrect because not all the statements are true; only minerals crystallizing in the urine lead to kidney stone formation.
4. What is the main difference between a nuclear reactor and a nuclear bomb?
- A. Reactors use enriched uranium, while bombs use natural uranium.
- B. Reactors have controlled chain reactions, while bombs have uncontrolled chain reactions.
- C. Reactors generate electricity, while bombs cause explosions.
- D. Reactors use moderators, while bombs don't.
Correct answer: B
Rationale: The key difference lies in the control of the fission chain reaction. Reactors have controlled reactions for energy generation, while bombs have rapid, uncontrolled reactions creating explosions.
5. What kind of bond links amino acids together?
- A. Hydrogen bond
- B. Ionic bond
- C. Disulfide bond
- D. Covalent bond
Correct answer: D
Rationale: Rationale: Amino acids are linked together by covalent bonds to form proteins. A covalent bond is a strong chemical bond formed by the sharing of electrons between atoms. In the case of amino acids, the covalent bond that links them together is called a peptide bond. This bond forms between the amino group of one amino acid and the carboxyl group of another amino acid, resulting in the formation of a peptide chain. Hydrogen bonds, ionic bonds, and disulfide bonds can also play roles in protein structure and stability, but the primary bond linking amino acids together in a protein chain is the covalent peptide bond.
6. Which statement BEST summarizes the author's perspective on bioremediation for plastic pollution?
- A. It is the only viable solution to the problem and should be prioritized.
- B. It is a promising approach but requires further research and development.
- C. It is less effective than traditional methods and poses environmental risks.
- D. It is irrelevant to the problem and will not make a significant impact.
Correct answer: B
Rationale: The passage acknowledges the potential of bioremediation while highlighting the need for further research, indicating a balanced perspective.
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