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. What role does culture play in the development of psychopathology?

A. Culture has little impact on psychopathology.
B. Culture is crucial in understanding the development of psychopathology.
C. Culture has a moderate impact on the development of psychopathology.
D. Culture determines the onset of psychopathology.

Correct answer: B

Rationale: Culture is crucial in understanding the development of psychopathology. It influences beliefs, norms, values, and behaviors, which can significantly impact the manifestation and understanding of psychopathological conditions. Choice A is incorrect because culture does have a substantial impact on psychopathology. Choice C is not as strong as choice B in emphasizing the significance of culture. Choice D is incorrect as culture is one of many factors influencing the onset of psychopathology, not the sole determinant.

3. Which of the following is true about subjective distress?

A. All individuals with mental illness experience some degree of distress
B. Distress is the only criterion in diagnosing abnormality
C. Its presence is enough for a clinician to determine if someone has a mental illness
D. Some individuals with a mental disorder may not experience subjective distress

Correct answer: D

Rationale: Subjective distress is not universal among individuals with a mental disorder. Choice A is incorrect as not all individuals with mental illness experience distress. Choice B is incorrect because distress is just one of the criteria used in diagnosing abnormality, not the only one. Choice C is incorrect because the presence of subjective distress alone is not sufficient for a clinician to determine if someone has a mental illness.

4. What is the term for a fluid-filled sac in which the baby floats until just before it is born?

A. Amnion
B. Placenta
C. Umbilical cord
D. Embryo

Correct answer: A

Rationale: The correct answer is A: Amnion. The amnion is a fluid-filled sac that surrounds and protects the developing fetus in the womb. It acts as a cushion, maintaining a stable temperature and protecting the fetus from external pressure. Choices B, C, and D are incorrect because the placenta is an organ that provides nutrients and oxygen to the fetus and removes waste products, the umbilical cord connects the fetus to the placenta to facilitate nutrient exchange, and an embryo is an early stage of development before it becomes a fetus.

5. The site of chemical communication in the brain is the ________.

A. neuron
B. synapse
C. axon
D. dendrite

Correct answer: B

Rationale: The synapse is the correct answer. It is the site where communication between neurons occurs through the release and reception of neurotransmitters. Choice A, neuron, is incorrect as it is the cell itself rather than a specific site of communication. Choice C, axon, is also incorrect as it is a part of the neuron that transmits signals away from the cell body. Choice D, dendrite, is not the correct answer either, as dendrites receive signals from other neurons but do not release neurotransmitters for communication.