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MacBook Purple > Mac 3: End > Flashcards

Mac 3: End Flashcards

1
Q

The male and female reproductive systems include paired gonads and networks of tube in which __ and__ are manufactured.

  • Testes & Ovaries
  • Semen & Somatic Cells
  • Penis & Ovaries
  • Sperm Cells & Oocytes
A

-Sperm cells & Oocytes

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2
Q

Which of the following statements about oogenesis is false?

  • The primary oocyte is haploid
  • The secondary oocyte is haploid
  • The ovum produced is haploid
  • The polar bodies degenerate after the second meiotic division
A

-The primary oocyte is haploid

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3
Q

Which of the following is an acne medicine that causes spontaneous abortion and defects of the heart, nervous system, and face in exposed embryos

  • Spuntnik
  • Denvaxia
  • Accutane
  • Avodart
A

-Accutane

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4
Q

The term ‘synapsis’ is associated with process?

  • Independent Assortment
  • Anaphase
  • Crossing Over
  • Fertilization
  • Mitosis
A

-Crossing Over

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5
Q

Pregnancy tests generally are based upon the detection in maternal urine of __

  • Estrogen
  • Testosterone
  • Progesterone
  • Human Chorionic Gonadotropin
A

-Human Chorionic Gonadotropin

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6
Q

The process in which haploid gametes are formed in diploid organisms is called:

-Cytokinesis
-Interphase
-Nuclear Division
Mitosis
-Meiosis

A

-Meiosis

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7
Q

Which Statement is/are true or false?

The first division is called reduction division (or meiosis I) because it reduces the number of replicated chromosomes from 46 to 23.

The second division, called an equational division (or meiosis II), produces four cells from the two cells formed in the first division by splitting the replicated chromosome.

A

-Both statements are TRUE

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8
Q

When does crossover take place in meiosis?

  • Interphase
  • Metaphase I
  • Prophase II
  • Prophase I
A

-Prophase I

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9
Q

The chemicals or agents that cause birth defects are called__

  • Teratogens
  • Carcinogens
  • Detergents
  • Cytogens
A

-Teratogens

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10
Q

Independent assortment is one of the factors that contribute to genetic diversity. Independent assortment is associated with which stages of meiosis?

  • Metaphase I
  • Anaphase II
  • Anaphase I
  • Prophase I
  • Metaphase II
A

-Metaphase I

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11
Q

At which stage of meiosis do chromatids separate and become daughter chromosomes?

  • Metaphase I
  • Metaphase II
  • Anaphase II
  • Anaphase I
  • Telophase II
A

-Anaphase II

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12
Q

Which of the following statements about spermatogenesis is true?

  • Spermatogenesis results in four haploid spermatids from each primary spermatocyte
  • Spermatogenesis results in one haploid spermatids and four polar bodies per primary spermatocyte
  • Spermatogenesis results in four diploid spermatids from each primary spermatocyte
  • Spermatogenesis results in one diploid spermatid and four polar bodies per primary spermatocyte
A

-Spermatogenesis results in four haploid spermatids from each primary spermatocyte

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13
Q

The fertilized egg (zygote) of a human contains how many chromosomes?

  • 46
  • 23
  • 1
  • 48
  • 22
A

-46

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14
Q

A human egg cell has __ chromosomes

  • 23
  • 22
  • 46
  • 11
A

-23

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15
Q

About a day after fertilization, the zygote divides by mitosis, beginning a period of frequent cell division called__

  • Oogenesis
  • Crossing over
  • Gastrulation
  • Cleavage
A

-Cleavage

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16
Q

If a diploid organisms has a genome consisting of 46 chromosomes, its gametes will have __ chromosomes

  • 23
  • 92
  • 22
  • 16
  • 46
A

-23

17
Q

All the following are Rapid Aging Syndromes except:

  • Werner’s Syndrome
  • All of the Choices
  • Ataxia Telangiectasia
  • Acquired Immunodeficiency Syndrome
A

-Acquired Immunodeficiency Syndrome

18
Q

___ reduces the chromosome number in gametes from diploid to haploid.

  • Anaphase
  • Mitosis
  • Meiosis
  • Prophase I
A

-Meiosis

19
Q

Which of the following statements accurately describes gametogenesis?

  • Gametogenesis always result in haploid cells
  • Gametogenesis is not necessary for mammals
  • Gametogenesis always starts in haploid cells
  • Gametogenesis only occurs in plants
A

-Gametogenesis always result in haploid cells

20
Q

Which of the following sequences represents the correct order of events in the formation of a human fetus?

  • Fertilization-Zygote-Blastocyst-Embryo
  • None of the above
  • Fertilization-Growth-Differentiation-Zygote
  • Zygote-Fertilization-Blastocyst-Embryo
A

-Fertilization- Zygote-Blastocyst-Embryo

MacBook Purple (18 decks)

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