ATI TEAS 7
TEAS Test 7 science Questions
Question 1 of 5
Long-term potentiation (LTP) is a process in the brain associated with:
Correct Answer: B
Rationale: Long-term potentiation (LTP) is a process in the brain strongly associated with memory formation. It involves the strengthening of synapses between neurons, which is crucial for learning and memory. Sensory perception, muscle control, and emotional regulation are not directly related to LTP. Sensory perception involves the detection and processing of sensory information, muscle control pertains to movement coordination, and emotional regulation refers to the management of emotions, none of which are primarily influenced by LTP.
Question 2 of 5
In a food chain, which trophic level captures energy from the sun?
Correct Answer: C
Rationale: Producers, such as plants, algae, and some bacteria, are the organisms in a food chain that capture energy from the sun through the process of photosynthesis. They convert sunlight into chemical energy, which is then passed on to other organisms in the food chain. Producers are at the base of the food chain and form the foundation for all other trophic levels to obtain energy. Decomposers (option
A) break down organic matter, carnivores (option
B) consume other animals, and omnivores (option
D) consume both plants and animals, but they do not directly capture energy from the sun.
Question 3 of 5
Urine, the liquid waste product of the body, travels from the kidneys to the bladder through tubes called:
Correct Answer: A
Rationale: The correct answer is 'Ureters.' Ureters are tubes that connect each kidney to the bladder. They transport urine from the kidneys to the bladder for storage before excretion. The urethra, which is not the correct answer, is responsible for carrying urine from the bladder out of the body. Nephrons, another incorrect choice, are microscopic units within the kidneys that filter blood and produce urine. The renal pelvis, also an incorrect choice, is a structure in the kidney where urine collects before moving into the ureters for further passage to the bladder.
Question 4 of 5
A light ray travels from air (refractive index 1.00) into water (refractive index 1.33). What happens to its speed and direction?
Correct Answer: C
Rationale: When a light ray travels from air (lower refractive index) to water (higher refractive index), its speed decreases due to the change in the medium. This is because light travels slower in denser mediums. As the light ray enters the denser medium, water in this case, it bends towards the normal (the line perpendicular to the surface of the water). This phenomenon is known as refraction.
Choice A is incorrect as the speed of light decreases when entering a denser medium.
Choice B is incorrect as the direction bends towards the normal, not away from it.
Choice D is incorrect as the speed and direction of the light ray do change when moving from air to water.
Question 5 of 5
What is the term for the energy absorbed during a chemical reaction?
Correct Answer: D
Rationale: The correct term for the energy absorbed during a chemical reaction is 'Endothermic energy.' Endothermic reactions absorb energy from their surroundings, leading to a decrease in temperature. The prefix 'endo-' means 'inward' or 'within,' indicating that energy is taken in during the reaction.
Choices A, B, and C are incorrect because kinetic energy refers to the energy of motion, potential energy is stored energy, and heat energy is a form of energy transfer rather than specifically the energy absorbed during a chemical reaction.