define acceleration in terms of motion
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ATI TEAS 7

ati teas 7 science

1. What is the definition of 'acceleration' in terms of motion?

Correct answer: A

Rationale: Acceleration is defined as the rate of change of velocity of an object over time. It represents how an object's velocity is changing, either by speeding up, slowing down, or changing direction. Option B, 'Speed in a straight line,' actually refers to velocity, not acceleration. Option C, 'Distance covered in a given time,' is more related to speed, as it measures how much ground is covered in a specific time period. Option D, 'Force applied to an object,' is not the definition of acceleration; it is a force exerted on an object that can cause acceleration.

2. Which of the following bones are located in the hand?

Correct answer: B

Rationale: The correct answer is B, metacarpals. The metacarpals are the bones located in the hand, making up the palm and connecting to the fingers (phalanges) and wrist bones (carpals). The fibula and ulna are located in the leg and arm respectively, while the metatarsals are found in the foot. The axial skeleton consists of bones down the center of the body, including the skull, vertebrae, and ribs, while the appendicular skeleton includes bones of the arms, legs, and their attachments to the axial skeleton.

3. What is the process of combining two or more substances to form a heterogeneous mixture called?

Correct answer: C

Rationale: The correct answer is 'Mixing.' When substances are combined, a heterogeneous mixture is formed where the components are physically distinguishable. 'Dissolving' (Choice A) is the process of a solute becoming uniformly dispersed in a solvent to form a solution, not a heterogeneous mixture. 'Diluting' (Choice B) refers to reducing the concentration of a solute in a solution. 'Reacting' (Choice D) involves a chemical change where substances interact to form new products, rather than just physically mixing to form a heterogeneous mixture.

4. What is the length of DNA that can code for a particular protein?

Correct answer: C

Rationale: The correct answer is C: Gene. A gene is a specific segment of DNA that contains the information necessary to produce a particular protein. Genes are responsible for coding proteins, and each gene carries the instructions for a specific protein. Chromosomes consist of many genes and are not a specific length that codes for a protein. Nucleotides are the building blocks of DNA and are not a length that codes for a protein. Ribosomes are cellular organelles involved in protein synthesis and do not directly code for proteins.

5. What is the muscular sac in the female body that nourishes and protects a developing fetus?

Correct answer: C

Rationale: The correct answer is the uterus. The uterus is a muscular organ in the female body where a fertilized egg implants and grows into a fetus during pregnancy. It provides nourishment and protection to the developing fetus. The ovaries produce eggs, the fallopian tubes transport eggs from the ovaries to the uterus, and the vagina is the muscular tube that connects the uterus to the outside of the body for childbirth. Therefore, the roles of the ovary, fallopian tube, and vagina are not related to nourishing and protecting a developing fetus, making them incorrect choices.

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