TEAS Test 7 science quizlet

TEAS Test 7 science quizlet Related

Review TEAS Test 7 science quizlet related questions and content

Which organelle is responsible for carrying out photosynthesis in plant cells?

  • A. Golgi apparatus
  • B. Mitochondria
  • C. Chloroplasts
  • D. Lysosomes
Correct Answer: C

Rationale: A) Golgi apparatus: The Golgi apparatus is responsible for modifying, sorting, and packaging proteins for secretion or for use within the cell. It is not involved in photosynthesis.
B) Mitochondria: Mitochondria are known as the powerhouse of the cell and are responsible for generating energy in the form of ATP through cellular respiration. They are not involved in photosynthesis.
C) Chloroplasts: Chloroplasts are the organelles responsible for carrying out photosynthesis in plant cells. They contain chlorophyll, a pigment that captures light energy and converts it into chemical energy in the form of glucose.
D) Lysosomes: Lysosomes are membrane-bound organelles that contain digestive enzymes to break down waste materials and cellular debris. They are not involved in photosynthesis.

Therefore, the correct answer is C) Chloroplasts, as they are specifically responsible for carrying out photosynthesis in plant

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In the context of cholesterol levels, LDL cholesterol is often referred to as:

  • A. HDL or "good" cholesterol.
  • B. LDL or "bad" cholesterol.
  • C. Total cholesterol, encompassing both LDL and HDL.
  • D. VLDL, a type of triglyceride transported in the bloodstream.
Correct Answer: B

Rationale: LDL cholesterol is often referred to as "bad" cholesterol because high levels of LDL can lead to plaque buildup in the arteries, increasing the risk of heart disease and stroke. LDL cholesterol is considered harmful as it contributes to the formation of plaque in blood vessels, whereas HDL cholesterol helps remove LDL from the arteries. Choice A is incorrect because HDL is known as "good" cholesterol, which helps remove LDL cholesterol from the bloodstream. Choice C is incorrect as it refers to total cholesterol, which includes LDL, HDL, and other lipids. Choice D is incorrect as VLDL is a different type of lipoprotein that carries triglycerides and is not specifically related to LDL cholesterol.

Rusting of iron is an example of

  • A. Endothermic reaction
  • B. Exothermic reaction
  • C. Single displacement reaction
  • D. Photochemical reaction
Correct Answer: A

Rationale: The rusting of iron is an endothermic reaction. This means that it absorbs heat from its surroundings to occur. Rusting involves the slow oxidation of iron in the presence of oxygen and water. As energy is absorbed during this process, it is classified as an endothermic reaction. Choice B, an exothermic reaction, releases heat instead of absorbing it, which is not the case in rusting. Choices C and D are unrelated to the process of rusting and do not involve the absorption of heat from the surroundings.

What force keeps a car moving along a curved road?

  • A. Gravitational force
  • B. Normal force from the road
  • C. Air resistance
  • D. Friction between the tires and the road
Correct Answer: D

Rationale: The correct answer is D: Friction between the tires and the road. When a car travels along a curved road, the friction between the tires of the car and the road provides the necessary centripetal force required to keep the car moving in the curved path. This friction allows the tires to grip the road and prevent the car from sliding off the curve due to inertia or momentum. Choices A, B, and C are incorrect because gravitational force, normal force from the road, and air resistance do not play a significant role in keeping a car moving along a curved road. While these forces may have other effects on the car's motion, they are not the primary force responsible for maintaining the car's trajectory along a curve.

Which of the following is NOT true about fossils?

  • A. They can provide evidence for the order of appearance of different species
  • B. They can be used to estimate the age of rocks and layers
  • C. They can tell us about the behavior of extinct organisms
  • D. They are always perfectly preserved
Correct Answer: D

Rationale: A) This statement is true. Fossils can provide evidence for the order of appearance of different species through the study of the fossil record.
B) This statement is true. Fossils can be used to estimate the age of rocks and layers through relative dating methods such as stratigraphy and absolute dating methods like radiometric dating.
C) This statement is true. Fossils can provide information about the behavior of extinct organisms through the study of their preserved remains and traces.
D) This statement is NOT true. Fossils are not always perfectly preserved. In many cases, fossils are incomplete, fragmented, or altered over time due to geological processes. The level of preservation can vary depending on factors such as the type of organism, the environment in which it lived, and the processes involved in fossilization.

Where does gas exchange take place in the lungs?

  • A. Bronchi
  • B. Trachea
  • C. Alveoli
  • D. Pleura
Correct Answer: C

Rationale: Gas exchange in the lungs occurs in the alveoli. Alveoli are tiny air sacs where oxygen from inhaled air diffuses into the bloodstream, and carbon dioxide from the blood diffuses into the alveoli to be exhaled. The bronchi are the main airways that branch off from the trachea, which is the windpipe connecting the larynx to the bronchi. The pleura is a membrane surrounding the lungs and lining the chest cavity, providing protection and lubrication for the lungs but not directly involved in gas exchange.

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