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ATI TEAS 7

physics

1. How is power related to time?

Correct answer: c

Rationale: Power is the rate at which work is done or energy is transferred, and it is not directly linked to time.

2. What is the functional group present in esters?

Correct answer: C

Rationale: Esters have the functional group -COO-, representing a carbonyl group bonded to an oxygen atom. The other choices are associated with different functional groups.

3. A ball is rolling across the floor and comes to a stop on its own. What force caused the ball to stop?

Correct answer: C

Rationale: In the absence of other forces, air resistance will gradually slow down the ball until it stops.

4. What is the term for the shedding of the outermost layer of the epidermis?

Correct answer: A

Rationale: The correct term for the shedding of the outermost layer of the epidermis is desquamation. Desquamation is a natural process where old skin cells are shed off to make way for new cells. Exfoliation refers to the removal of dead skin cells through external means like scrubs. Keratinization is the process by which skin cells produce the protein keratin, while epidermolysis is a condition where the epidermis separates from the dermis. Therefore, in this context, desquamation is the most appropriate term for the shedding of the outermost layer of the epidermis.

5. What are the white blood cells responsible for coordinating the immune response called?

Correct answer: C

Rationale: The correct answer is C: "Lymphocytes." Lymphocytes are a type of white blood cell that plays a crucial role in coordinating the immune response. There are two main types of lymphocytes: B cells, which produce antibodies to target pathogens, and T cells, which directly attack infected cells. Neutrophils (option D) are another type of white blood cell involved in the immune response by engulfing and destroying pathogens. Red blood cells (option A) are responsible for carrying oxygen to body tissues, while platelets (option B) are involved in blood clotting. Therefore, lymphocytes are specifically responsible for coordinating the immune response, making them the correct answer to this question.

6. Which of the following functional groups has the highest priority according to the Cahn-Ingold-Prelog (CIP) ranking system?

Correct answer: C

Rationale: According to the Cahn-Ingold-Prelog (CIP) ranking system, the priority of functional groups is determined based on the atomic number of the atoms directly bonded to the functional group. In this case, carboxylic acid (COOH) has the highest priority because the carbon atom is directly bonded to two oxygen atoms, which have higher atomic numbers than carbon. The alcohol (OH) group has a lower priority as the oxygen atom is only bonded to hydrogen, while the aldehyde (CHO) and amine (NH2) groups have lower priorities compared to carboxylic acid. Therefore, option C, carboxylic acid, is the correct answer as it has the highest priority in the CIP ranking system.

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