ATI TEAS 7
physics
1. What is the unit of measurement for power?
- A. Joule (J)
- B. Newton (N)
- C. Watt (W)
- D. Kilogram-meter (kg·m)
Correct answer: c
Rationale: Power is measured in watts (W) in the SI unit system.
2. What is the process of copying DNA called?
- A. Transcription
- B. Translation
- C. Replication
- D. Mutation
Correct answer: C
Rationale: Rationale: A) Transcription is the process of creating an RNA copy of a segment of DNA. It involves the synthesis of mRNA from a DNA template. B) Translation is the process of synthesizing a protein from an mRNA template. It involves the conversion of the mRNA sequence into a sequence of amino acids. C) Replication is the process of copying DNA to produce an identical copy. During replication, the DNA double helix unwinds and each strand serves as a template for the synthesis of a new complementary strand, resulting in two identical DNA molecules. D) Mutation refers to a change in the DNA sequence that can result from errors during replication, exposure to mutagens, or other factors. While mutations can occur during replication, the process of copying DNA itself is called replication.
3. The artist paints breathtaking landscapes. What is the third-person singular, present tense form of the verb "paint"?
- A. painted
- B. paints
- C. painting
- D. painter
Correct answer: B
Rationale: Verbs change depending on the subject (person) and time (tense).
4. Alpha waves, characteristic of quiet wakefulness and relaxation, have a frequency range of:
- A. 0.5-4 Hz
- B. 4-8 Hz
- C. 8-13 Hz
- D. 13-30 Hz
Correct answer: B
Rationale: Alpha waves are typically associated with relaxed wakefulness and quiet, non-arousing states. They have a frequency range of 8-13 Hz. This frequency range is slower than beta waves (13-30 Hz) associated with active thinking and concentration, making option C the correct answer. Options A (0.5-4 Hz) and D (13-30 Hz) do not fall within the typical range of alpha waves. Therefore, option B is the most appropriate choice for the frequency range of alpha waves, reflecting the brain's state during relaxation and quiet wakefulness.
5. How does the structure of centromeres contribute to chromosome movement during mitosis?
- A. The centromere provides a binding site for spindle fibers, allowing chromosomes to be attached and manipulated.
- B. The centromere serves as a dividing point between sister chromatids, ensuring their separation during anaphase.
- C. The centromere maintains chromosome stability by preventing chromosomal breaks and rearrangements.
- D. The centromere plays a role in DNA replication, ensuring accurate copying of the genetic material.
Correct answer: A
Rationale: Rationale: A) The centromere provides a binding site for spindle fibers, which are microtubules that help move chromosomes during cell division. This attachment allows the chromosomes to be pulled towards opposite poles of the cell during mitosis. Therefore, the structure of centromeres directly contributes to chromosome movement during mitosis by facilitating the attachment and manipulation of chromosomes by the spindle fibers. B) While the centromere does serve as a dividing point between sister chromatids, ensuring their separation during anaphase, this function is more related to the segregation of chromosomes rather than their movement. C) The centromere does play a role in maintaining chromosome stability by ensuring proper chromosome segregation, but it is not primarily responsible for preventing chromosomal breaks and rearrangements. D) The centromere is not directly involved in DNA replication. Its main function is
6. Identify the direct object in the following sentence: "She baked a delicious cake for the party."
- A. for the party
- B. delicious
- C. cake
- D. baked
Correct answer: C
Rationale: The direct object receives the action of the verb.
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