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ATI TEAS 7

Biology

1. What is the difference between a prokaryotic cell and a eukaryotic cell?

Correct answer: B

Rationale: Rationale: - Prokaryotic cells are simpler and do not have a true nucleus. Their genetic material is located in the nucleoid region, which is not enclosed by a membrane. - Eukaryotic cells are more complex and have a true nucleus that houses the genetic material, enclosed within a nuclear membrane. - Both prokaryotic and eukaryotic cells have organelles, but eukaryotic cells have membrane-bound organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus, while prokaryotic cells lack these membrane-bound organelles.

2. What phenomenon occurs when a wave encounters a change in medium causing a change in its speed and direction?

Correct answer: a

Rationale: Refraction happens when a wave changes its speed and direction due to encountering a change in medium.

3. The energy required to break a chemical bond is called:

Correct answer: C

Rationale: Rationale: Activation energy is the energy required to break a chemical bond and initiate a chemical reaction. Kinetic energy (option A) is the energy of motion, potential energy (option B) is stored energy, and bond energy (option D) is the energy required to break a particular chemical bond in a molecule. Among the options provided, activation energy best describes the energy required to break a chemical bond.

4. What happens to the density of a gas when its temperature increases at constant pressure?

Correct answer: B

Rationale: As gas particles gain thermal energy with increasing temperature, they spread out, decreasing the density.

5. A blog post criticizes a scientific study due to the author's political views. Is this a valid critique?

Correct answer: C

Rationale: Criticism in science should focus on methodology, data analysis, and evidence, not personal agendas or political opinions.

6. What are enzymes?

Correct answer: B

Rationale: Enzymes are proteins that speed up chemical reactions in our cells. They act like tiny factories, fitting specific molecules (substrates) into their active site to facilitate reactions.

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