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Where does the male produce sperm, and where are these glands located?
- A. penis; scrotum
- B. scrotum; penis
- C. testes; penis
- D. testes; scrotum
Correct Answer: D
Rationale: The male produces sperm in the testes, which are two glands located in the scrotum. The scrotum is the external sac that houses and protects the testes, allowing for optimal temperature regulation to support sperm production. Choice A is incorrect because sperm production does not occur in the penis. Choice B is incorrect because the scrotum houses the testes, not the penis. Choice C is incorrect because sperm is produced in the testes, not the penis.
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In the __________ period, teratogens rarely have any impact.
- A. germinal
- B. embryonic
- C. fetal
- D. prenatal
Correct Answer: A
Rationale: In the germinal period of prenatal development, which lasts for about the first two weeks after fertilization, the developing organism is a zygote that has not yet implanted in the uterus. During this period, teratogens rarely have any impact because essential implantation and early cellular division processes are occurring. Teratogens are more likely to have significant effects during the later embryonic and fetal periods of development. Therefore, the correct answer is A. Choice B, embryonic period, is incorrect because teratogens have a higher likelihood of impacting development during this period. Choice C, fetal period, is also incorrect as teratogens can impact development during this stage as well. Choice D, prenatal, is a broad term encompassing the entire period of development from conception to birth and is not a specific developmental stage where teratogens have a minimal impact.
Which Apgar criterion can be more difficult to apply to newborns of all races?
- A. pink color
- B. reflex irritability
- C. limp muscle tone
- D. strong breathing
Correct Answer: D
Rationale: Among the Apgar criteria, the pink color (choice A), reflex irritability (choice B), and limp muscle tone (choice C) are relatively easy to assess in newborns of all races. However, the criterion that can be more difficult to apply to newborns of all races is strong breathing (choice D). This is because evaluating the strength of a newborn's breathing can be more subjective and require careful observation. Unlike the other criteria that have more visible and objective indicators, assessing the strength of breathing might vary based on the observer's interpretation, making it more challenging to apply universally.
According to research on family chaos, mothers who __________ experience greater psychological stress.
- A. make family meals
- B. frequently multitask
- C. work outside the home
- D. cosleep with their infants
Correct Answer: B
Rationale: According to research on family chaos, mothers who frequently multitask experience greater psychological stress. Multitasking can lead to increased stress levels as individuals juggle multiple responsibilities and tasks simultaneously, leading to a sense of being overwhelmed and unable to focus effectively. This can contribute to higher levels of psychological stress for mothers in particular, impacting their overall well-being. Choices A, C, and D are incorrect because the research specifically links frequent multitasking, not making family meals, working outside the home, or cosleeping with infants, to greater psychological stress among mothers.
In an experiment, the independent variable __________.
- A. is the one the investigator expects to be influenced by another variable
- B. is the one the investigator expects to cause changes in another variable
- C. cannot be manipulated or controlled by the researcher
- D. is the number that describes how two measures are associated with each other
Correct Answer: B
Rationale: In an experiment, the independent variable is the one that the investigator expects to cause changes in another variable. It is the factor that is deliberately manipulated or changed by the researcher to observe its effects on the dependent variable. The purpose of manipulating the independent variable is to study its impact on the outcome, allowing researchers to establish cause-and-effect relationships in their investigations. Choice A is incorrect because the independent variable is not influenced but rather influences another variable. Choice C is incorrect as the independent variable is intentionally manipulated by the researcher. Choice D is incorrect as it refers to a different concept unrelated to the independent variable in an experiment.
Dr. Faulkner believes that directly observable events, such as stimuli and responses, are the appropriate focus of the study of development. Dr. Faulkner probably follows the __________ perspective of development.
- A. psychosexual
- B. psychosocial
- C. behaviorist
- D. cognitive-developmental
Correct Answer: C
Rationale: Dr. Faulkner's focus on directly observable events, such as stimuli and responses, aligns with the behaviorist perspective of development. Behaviorism emphasizes the influence of the environment on individual behavior and learning, with a strong emphasis on observable actions rather than internal mental processes or stages of development. Choice A, psychosexual, is associated with Freud's theory focusing on stages of psychosexual development. Choice B, psychosocial, is linked to Erikson's theory of psychosocial development. Choice D, cognitive-developmental, is related to Piaget's theory emphasizing cognitive development stages.