Question 1

Which of the following behaviors is NOT influenced by culture?

Accepted Answer

Cultural influences typically do not extend to basic physical actions and developmental milestones such as a toddler's attempt to climb stairs, which is more related to their natural exploration and motor skill development rather than cultural norms or teachings.

Question 2

The use of ________ during pregnancy is most associated with premature birth, low-birth-weight infants, and fetal death.

Accepted Answer

The answer of The use of ________ during pregnancy is...

Question 3

In normal developmental cases, how many chromosomes does a human zygote have after conception?

Accepted Answer

A human zygote has 46 chromosomes after conception, inheriting 23 chromosomes from each parent to form a complete set.

Question 4

The germinal period ________.

Accepted Answer

The germinal period is the stage of prenatal development that occurs from conception until the fertilized egg implants itself in the wall of the uterus, which typically takes about two weeks.

Question 5

Which of the following is TRUE about conception?

Accepted Answer

During conception, each parent contributes 23 chromosomes to form a new zygote.

Question 6

The fact that participants in this type of research may drop out over time, leaving behind a "self-selected" sample, means that the researcher may have a problem generalizing the results to a larger population of people.

Accepted Answer

Longitudinal research involves studying the same group of individuals over an extended period. This type of research is susceptible to dropout rates, which can result in a self-selected sample that may not be representative of the larger population, thus affecting the generalizability of the findings.

Question 7

Jeremy was born with serious facial abnormalities and stunted growth.He is also showing signs of brain damage and neurobehavioral difficulties.Jeremy is most likely suffering from ________.

Accepted Answer

Fetal alcohol syndrome is characterized by facial abnormalities, stunted growth, and neurobehavioral difficulties, which are symptoms mentioned in the scenario. These are caused by alcohol exposure during pregnancy.

Question 8

Synaptic pruning refers to the ________ that helps strengthen connection between neurons and make those connections operate more efficiently.

Accepted Answer

Synaptic pruning is the process of eliminating synapses that are not frequently used, which helps in streamlining neural processing and making the remaining connections more efficient.

Question 9

Which of the following is CORRECT regarding brain development?

Accepted Answer

Neurons indeed grow in size and dendrite connections increase during the prenatal period, which is crucial for the development of the brain's neural network. This process allows for the establishment of complex brain functions and connectivity.

Question 10

Which of the following is INCORRECTLY matched?

Accepted Answer

Conception leads to the formation of a zygote, not directly to the development of a blastocyst. The blastocyst forms several days after conception as the zygote undergoes cell division and differentiation.

Question 11

Before she knew she was pregnant, Moira had an x-ray on her abdomen when she was having pain.As radiation can be teratogenic, her unborn child may now be at a higher risk for which outcome?

Accepted Answer

Radiation exposure during pregnancy, especially in the early stages, can increase the risk of cancer in the unborn child.

Question 12

At birth, your head was about ________ the size of your total body.As an adult, however, your head is more like ________ of your total size!

Accepted Answer

At birth, a baby's head is approximately one-quarter of their total body size. As an adult, the head is about one-eighth of the total body size.

Question 13

Teratogens are ________ that can cause birth defects.

Accepted Answer

Teratogens are environmental agents, such as drugs, viruses, chemicals, or even stressors, that can cause developmental malformations in an embryo or fetus.

Question 14

Which of the following sensory systems is MOST poorly developed at birth?

Accepted Answer

Vision is the most poorly developed sensory system at birth. Newborns can see, but their vision is quite blurry, with a focus on objects 8 to 12 inches away. The other senses, such as taste, smell, and touch, are more developed at birth.

Question 15

The fetal period lasts from ________.

Accepted Answer

The fetal period starts at the end of the 8th week after fertilization and continues until birth. This phase follows the embryonic stage and is characterized by rapid growth and development of the organs and structures that formed during the embryonic period.

Question 16

Jairo lives in a community with a lot of a certain chemical in the water, and as a result of this exposure certain genes in Jairo's genetic code do not turn on when he hits puberty.This example, which notes the interaction of genetics and one's environment, would be of interest to a person who studies ________.

Accepted Answer

Epigenetics is the study of how behaviors and environment can cause changes that affect the way genes work. In this case, the chemical in the water affecting gene expression in Jairo is a classic example of an epigenetic effect.

Question 17

The first stage of prenatal development (from conception to implantation), characterized by rapid cell division, is called the ________ period.

Accepted Answer

The germinal period is the first stage of prenatal development, occurring from conception to implantation, and is characterized by rapid cell division and the establishment of the embryo in the uterine wall.

Question 18

From implantation through the 8th week, the major body organs and systems become differentiated.This stage of pregnancy is called the ________ period.

Accepted Answer

The embryonic period refers to the stage of pregnancy from implantation through the 8th week, during which the major body organs and systems begin to develop and differentiate.

Question 19

At birth, the sense of ________ is poorly developed when compared to the other sensory systems.

Accepted Answer

At birth, the sense of vision is less developed than the other senses. Newborns can see, but their vision is not as sharp or fully developed as that of older children or adults. They can focus best on objects that are 8-12 inches away, which is about the distance to a parent's face during nursing or bottle feeding. The other senses, such as hearing, smell, and touch, are more developed at birth.

Question 20

The first motor abilities a newborn exhibits are ________.

Accepted Answer

The first motor abilities a newborn exhibits are limited to reflexive actions, such as the rooting and sucking reflexes, which are crucial for feeding and survival. These reflexes are innate and involuntary, rather than voluntary or complex integrations of sensory stimuli.

Quiz 9: Life Span Development I