Fertilization Process

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Questions and Answers

What is the approximate volume of breast milk produced by females per infant?

  • 2 liters
  • 1.5 liters (correct)
  • 2.5 liters
  • 1 liter

What is the term for a gene that will be seen in the phenotype?

  • Recessive
  • Homozygous
  • Dominant (correct)
  • Heterozygous

What is the purpose of capacitation in the fertilization process?

  • To enhance the survival of sperm cells in the acidic environment
  • To facilitate the fusion of multiple sperm cells with the oocyte
  • To increase the speed of sperm movement
  • To enable the sperm's enzymes to penetrate the oocyte (correct)

What is the purpose of a Punnett square?

<p>To figure out the outcome probability of mixing two genes (D)</p> Signup and view all the answers

What is the reason why most genetic disorders are passed down on the recessive gene?

<p>Because if they are on the dominant gene, the offspring may not live long enough to reproduce (A)</p> Signup and view all the answers

What is the primary reason why most sperm cells do not fertilize the oocyte?

<p>They are killed by the acidic environment or leukocytes (C)</p> Signup and view all the answers

What is the result of having only one X chromosome instead of two?

<p>Turner syndrome (C)</p> Signup and view all the answers

What happens to the plasma membrane of the oocyte after a sperm cell fertilizes it?

<p>It depolarizes, making it impenetrable to other sperm cells (C)</p> Signup and view all the answers

What is the exception to the rule that genetic disorders are passed down on the recessive gene?

<p>Huntington's disease (A)</p> Signup and view all the answers

What is the result of the slow block mechanism in fertilization?

<p>The destruction of all sperm receptors on the oocyte's surface (C)</p> Signup and view all the answers

What is the rarity of identical twins resulting from the fertilization process?

<p>Less common than fraternal twins (C)</p> Signup and view all the answers

What is the final result of the fertilization process?

<p>A diploid zygote with both paternal and maternal chromosomes (D)</p> Signup and view all the answers

During which stage of gestation does the offspring float toward the uterus?

<p>Pre-embryonic stage (C)</p> Signup and view all the answers

What is the function of trophoblasts in the blastocoel?

<p>They form the placenta (D)</p> Signup and view all the answers

What percentage of conceptuses fail to implant in the uterine wall?

<p>50-75% (C)</p> Signup and view all the answers

What hormone allows the corpus luteum to survive during pregnancy?

<p>Human chorionic gonadotropin (HCG) (D)</p> Signup and view all the answers

What is the result of implantation in a non-desirable place?

<p>All of the above (D)</p> Signup and view all the answers

What is the function of the yolk sac?

<p>To provide nutrients, blood cells, and germ cells to the embryo (D)</p> Signup and view all the answers

During which weeks does the placenta develop?

<p>Weeks 4-12 (D)</p> Signup and view all the answers

What is the result of lack of folate in the diet during pregnancy?

<p>Spina bifida (B)</p> Signup and view all the answers

During which weeks does sensory organ development begin?

<p>Weeks 13-16 (D)</p> Signup and view all the answers

What is the average weight of a newborn?

<p>5.5-8.8 lbs. (B)</p> Signup and view all the answers

What is the approximate weight gain per month during the first trimester?

<p>1 lbs (B)</p> Signup and view all the answers

Why does morning sickness occur during pregnancy?

<p>Decrease in peristalsis and increase in hormones (C)</p> Signup and view all the answers

What is the primary reason for the decrease in blood flow during pregnancy?

<p>The growing uterus puts pressure on veins (B)</p> Signup and view all the answers

What is the main reason for the oxygen demand increase during pregnancy?

<p>The growing uterus (A)</p> Signup and view all the answers

What is the role of Montgomery glands during breastfeeding?

<p>To secrete oil to prevent chapping or cracking around the nipple (D)</p> Signup and view all the answers

What is the duration of the postpartum period?

<p>6 weeks (C)</p> Signup and view all the answers

What is the term for the uterus returning to its original size?

<p>Involution (C)</p> Signup and view all the answers

What is the primary reason for the baby's difficulty in controlling body temperature?

<p>Imature muscles and underdeveloped nerves (A)</p> Signup and view all the answers

What is the purpose of the APGAR score?

<p>To assess the baby's overall health in the first few minutes (B)</p> Signup and view all the answers

What is the composition of breast milk for days 3-10 postpartum?

<p>Colostrum/breast milk mixture (C)</p> Signup and view all the answers

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