Biology Forums - Study Force

Myelination refers to:
 
  a. the decay of brain cells that are not used.
  b. the development of connections across neurons.
  c. the process by which axons are insulated.
  d. the rapid formation of new cells in the brain.

Ques. 2

The neural tube, which eventually becomes the spinal column and brain, begins to develop:
 
  a. during the first 3 weeks after fertilization.
  b. between 3 and 8 weeks after fertilization.
  c. between 9 and 12 weeks after fertilization.
  d. between 12 and 15 weeks after fertilization.

Ques. 3

The period of prenatal development that begins about three weeks after fertilization is known as:
 
  a. the embryonic stage.
  b. the fetal stage.
  c. the implantation stage.
  d. the zygotic stage.

Ques. 4

The process by which genes and the environment interact, turning on certain genes, is known as:
 
  a. embryonic development.
  b. epigenetics.
  c. fertilization.
  d. teratogenic interaction.

Ques. 5

The combination of genes from the parents that determines a person's genetic potential is the definition of
 
  a. chromosomes.
  b. epigenetics.
  c. fertilization.
  d. genome.

Ques. 6

Parents with anxious attachment relationships to each other said their marriage was less satisfying after they had a baby because:
 
  a. the child had somehow lessened the romantic relationship between them.
  b. the infant seemed to be excessively needy.
  c. the responsibilities of parenting had reduced their independence.
  d. they had more expenses and less time to do things they enjoyed.

Ques. 7

The first eight weeks of pregnancy are especially critical because all major organ systems develop during this period.
 
  Indicate whether this statement is true or false.

Ques. 8

Congenital anomalies are:
 
  a. caused by defective chromosomes or genes.
  b. caused by environmental conditions.
  c. caused by poor prenatal care.
  d. incompatible ova and sperm.

Ques. 9

Pregnant women should have regular dental care because the bacteria that causes cavities can be transmitted from mother to child, leading to rupture of the placenta and premature birth.
 
  Indicate whether this statement is true or false.

Ques. 10

A time of physiological and/or psychological sensitivity during which the normal development or a major organ or structural system is vulnerable to insult or injury is called the:
 
  a. developmental period.
  b. critical period.
  c. essential period.
  d. neonatal period.

Answer to #1

C

Answer to #2

A

Answer to #3

A

Answer to #4

B

Answer to #5

D

Answer to #6

A

Answer to #7

TRUE

Answer to #8

A

Answer to #9

TRUE

Answer to #10

B