during conception the 23 unpaired chromosomes in the ovum and sperm combine to form 23 pairs in an entirely new cell called the

ATI RN

Exam 4 Psychology

1. During conception, the 23 unpaired chromosomes in the ovum and sperm combine to form 23 pairs in an entirely new cell called the?

A. Embryo
B. DNA
C. Fetus
D. Zygote

Correct answer: D

Rationale: The correct answer is D, Zygote. A zygote is formed when the 23 chromosomes from the ovum and sperm combine during conception. It is the initial cell formed and marks the beginning of a new organism. Choice A, Embryo, is incorrect as an embryo is formed later in the development process. Choice B, DNA, is incorrect as DNA is the genetic material within the chromosomes but is not the name of the new cell formed after fertilization. Choice C, Fetus, is incorrect as a fetus is the stage of prenatal development that occurs well after the zygote stage.

2. Arrange the three stages of prenatal development in the correct order.

A. Germinal stage, fetal stage, embryonic stage
B. Fetal stage, embryonic stage, germinal stage
C. Embryonic stage, germinal stage, fetal stage
D. Germinal stage, embryonic stage, fetal stage

Correct answer: D

Rationale: The correct order of the three stages of prenatal development is germinal stage, embryonic stage, and fetal stage. During the germinal stage, the fertilized egg rapidly divides and implants in the uterine wall. The embryonic stage follows, where major organs and systems begin to develop. Finally, during the fetal stage, the developing organism is known as a fetus and continues to grow and mature. Choice A is incorrect because it has the stages in the wrong order. Choice B is incorrect as it also presents the stages out of order. Choice C is incorrect as it reverses the order of the stages. Therefore, the correct answer is D.

3. Alison believes that individuals learn to be either aggressive or nonaggressive as a result of the experiences they have. Alison's views are most consistent with which view in psychology?

A. Behaviorist view of psychology.
B. Structuralist view of psychology.
C. Functionalist view of psychology.
D. Psychoanalytic view of psychology.

Correct answer: A

Rationale: Alison's belief that individuals learn to be either aggressive or nonaggressive as a result of their experiences aligns with the Behaviorist view of psychology. Behaviorism focuses on how behavior is learned through interactions with the environment, emphasizing the role of experience in shaping behavior. The other options are not directly related to the idea that behavior is learned through experiences: Structuralism focuses on the structure of conscious experience, Functionalism emphasizes the purpose of behavior, and Psychoanalytic theory focuses on the role of unconscious processes.

4. What is extinction, and how might it be used in treating a disorder?

A. Extinction strengthens the conditioned response by continuously pairing the conditioned stimulus with the unconditioned stimulus.
B. Extinction is the process of eliminating a conditioned response by repeatedly presenting the conditioned stimulus without the unconditioned stimulus.
C. Extinction is ineffective and is not used in treating disorders.
D. Extinction is the process of intensifying the conditioned response by pairing the conditioned stimulus with a stronger unconditioned stimulus.

Correct answer: B

Rationale: Extinction is the process of eliminating a conditioned response by repeatedly presenting the conditioned stimulus without the unconditioned stimulus. This process helps in reducing or eliminating undesired behaviors or responses. Choice A is incorrect because extinction weakens the conditioned response by breaking the association between the conditioned stimulus and the unconditioned stimulus. Choice C is incorrect as extinction is a widely used technique in behavioral therapies for treating disorders. Choice D is incorrect as extinction aims to reduce the conditioned response, not intensify it.

5. What are genes made of?

A. Trisomes
B. Chromosomes
C. DNA
D. Proteins

Correct answer: C

Rationale: Genes are made of DNA, which is the genetic material that carries the instructions for the development, functioning, growth, and reproduction of organisms. While chromosomes contain genes, they are not what genes themselves are made of. Proteins are involved in gene expression and regulation, but they are not the primary material genes consist of. Trisomes is an incorrect term in this context and does not relate to the composition of genes.