ATI TEAS 7
ATI TEAS Practice Science Test
1. What is the temperature of 35°C in Kelvin?
- A. 220
- B. 238
- C. 308
- D. 345
Correct answer: C
Rationale: To convert Celsius to Kelvin, add 273.15 to the Celsius temperature. In this case, 35°C + 273.15 = 308.15 K. Therefore, the correct answer is 308 K. Choice A (220) is incorrect as it does not account for adding 273.15 to convert to Kelvin. Choice B (238) is incorrect as it is not the result of adding 273.15 to 35°C. Choice D (345) is incorrect as it is not the correct conversion of 35°C to Kelvin.
2. What is the term for a group of organisms living in the same place and interacting with each other?
- A. Ecosystem
- B. Community
- C. Population
- D. Niche
Correct answer: B
Rationale: - A) Ecosystem refers to a biological community of interacting organisms and their physical environment. - B) Community specifically refers to a group of organisms of different species living in the same place and interacting with each other. - C) Population refers to a group of individuals of the same species living in the same area. - D) Niche refers to the role or function of an organism or species within an ecosystem. In this context, the term for a group of organisms living in the same place and interacting with each other is best described as a community because it involves multiple species interacting within a shared habitat.
3. What is the purpose of genetic counseling?
- A. To treat genetic disorders.
- B. To diagnose genetic diseases in newborns.
- C. To provide information and support to individuals and families with genetic risks.
- D. To collect DNA samples for research purposes.
Correct answer: C
Rationale: The purpose of genetic counseling is to provide information and support to individuals and families with genetic risks. Genetic counselors aim to explain the implications of genetic testing, discuss risks and options, and offer emotional and psychological support to help individuals make informed decisions regarding their genetic health. Choice A is incorrect because genetic counseling is not focused on treatment but rather on providing information and support. Choice B is incorrect as genetic counselors do not primarily diagnose genetic diseases in newborns but rather provide guidance and support based on existing diagnoses. Choice D is not the purpose of genetic counseling; genetic counselors do not collect DNA samples for research purposes but instead focus on assisting individuals and families in understanding and managing their genetic risks.
4. Which part of the neuron insulates and speeds up the transmission of nerve impulses along the axon?
- A. Dendrite
- B. Myelin sheath
- C. Synapse
- D. Cell body
Correct answer: B
Rationale: The myelin sheath is a fatty layer that surrounds the axon of a neuron, providing insulation and speeding up the transmission of nerve impulses. This insulation helps prevent the loss of electrical signals as they travel along the axon, allowing for faster and more efficient communication within the nervous system. Dendrites are branching extensions of a neuron that receive signals from other neurons, the synapse is the junction between two neurons where communication occurs, and the cell body contains the nucleus and organelles of the neuron, but none of these structures provide insulation for the transmission of nerve impulses along the axon.
5. What is the general formula for an alkene?
- A. CnH2n+2
- B. CnH2n
- C. CnH2n-2
- D. CnH2n+1
Correct answer: B
Rationale: The general formula for an alkene is \(C_nH_{2n}\), indicating the presence of a double bond between carbon atoms.
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