ATI TEAS 7
Chemistry
1. What is the formula for calculating molarity?
- A. M = n/V
- B. M = n/L
- C. M = mol/L
- D. M = mol/dm³
Correct answer: a
Rationale: All of these choices are equivalent to the original formula. The symbol "n" represents the number of moles of solute, and the symbol "V" represents the volume of the solution in liters. The symbol "L" is an abbreviation for "liters," and "dm³" is an alternative way to represent liters.
2. Which of the following is evidence that the controlling process is effective?
- A. The things that were planned are done
- B. Physicians do not complain.
- C. Employees are contended
- D. There is an increase in customer satisfaction rate.
Correct answer: A
Rationale: The correct answer is A: 'The things that were planned are done.' This is evidence that the controlling process is effective because it indicates that the organization is able to execute its plans successfully. When planned tasks and activities are completed as intended, it shows that the controlling function is ensuring that operations are on track and that deviations are being corrected. The completion of planned tasks also demonstrates that resources are being effectively utilized and that performance is being monitored and controlled. The other options do not directly relate to the effectiveness of the controlling process. Physicians not complaining, employees being contented, and an increase in customer satisfaction rate could be influenced by various factors and may not necessarily be solely attributed to the effectiveness of the controlling process.
3. Which of the following is NOT a recognized mode of natural selection?
- A. Directional selection (favoring one extreme trait value on a spectrum)
- B. Disruptive selection (favoring both extreme trait values on a spectrum)
- C. Stabilizing selection (favoring the average trait value on a spectrum)
- D. Sexual selection (selection based on mate choice that influences reproductive success)
Correct answer: D
Rationale: Rationale: A) Directional selection is a recognized mode of natural selection where one extreme trait value on a spectrum is favored over others. This can lead to a shift in the average trait value over time. B) Disruptive selection is a recognized mode of natural selection where both extreme trait values on a spectrum are favored over the average trait value. This can lead to the population splitting into two distinct groups. C) Stabilizing selection is a recognized mode of natural selection where the average trait value on a spectrum is favored over extreme values. This can lead to a reduction in genetic diversity within a population. D) Sexual selection is not a mode of natural selection in the traditional sense, as it involves mate choice and competition for mates rather than direct selection pressure on traits that affect survival and reproduction in the environment. Sexual selection can lead to the evolution of traits that enhance an individual's ability to attract
4. What are the building blocks of proteins?
- A. Sugars
- B. Fatty acids
- C. Amino acids
- D. Nucleotides
Correct answer: C
Rationale: Rationale: Proteins are macromolecules made up of long chains of amino acids. Amino acids are the building blocks of proteins and are linked together through peptide bonds to form polypeptide chains, which then fold into specific three-dimensional structures to carry out various functions in the body. Sugars (A) are the building blocks of carbohydrates, fatty acids (B) are the building blocks of lipids, and nucleotides (D) are the building blocks of nucleic acids like DNA and RNA.
5. What is the name of the monthly cycle in females that prepares the body for potential pregnancy?
- A. Ovulation cycle
- B. Menstrual cycle
- C. Implantation cycle
- D. Gestation cycle
Correct answer: B
Rationale: The correct answer is B: Menstrual cycle. The menstrual cycle is the monthly process in females where the lining of the uterus thickens in preparation for a potential pregnancy. If pregnancy does not occur, the lining sheds, resulting in menstruation. Ovulation is a key event within the menstrual cycle where an egg is released from the ovary, typically around the midpoint of the cycle. Implantation refers to the attachment of a fertilized egg to the uterus, which occurs after ovulation and fertilization. Gestation cycle refers to the period of pregnancy from conception to birth. Therefore, the menstrual cycle best describes the monthly process that prepares the body for potential pregnancy.
6. What is the correct way to punctuate the following sentence: "She asked me if I wanted to go to the movies with her"?
- A. She asked me, if I wanted to go to the movies with her.
- B. She asked me: if I wanted to go to the movies with her?
- C. She asked me, if I wanted, to go to the movies with her.
- D. She asked me if I wanted to go to the movies with her.
Correct answer: D
Rationale: Option D uses a question mark within the quoted material as it is a direct question.
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