Test yourself

Boss quiz

10 questions on the whole topic. You get one try at each.

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  1. What is a gamete?

    • Any cell that has a nucleus
    • A fertilised egg
    • A sex cell: a sperm or an egg
    • An organ that makes sex cells

  2. Where are sperm cells made?

    • In the sperm ducts
    • In the bladder
    • In the testes
    • In the penis

  3. Which organ contains eggs and releases them?

    • An oviduct
    • The cervix
    • The uterus
    • An ovary

  4. About how long does one menstrual cycle last?

    • 7 days
    • 9 months
    • 28 days
    • 14 days

  5. What happens at ovulation?

    • An ovary releases an egg
    • A sperm joins with an egg
    • An embryo settles in the uterus
    • The lining of the uterus is lost

  6. What is fertilisation?

    • An egg being released from an ovary
    • The nucleus of a sperm joining with the nucleus of an egg
    • The lining of the uterus being lost
    • An embryo settling into the lining of the uterus

  7. Where does fertilisation happen?

    • In an oviduct
    • In the vagina
    • In an ovary
    • In the uterus

  8. What joins the foetus to the placenta?

    • The umbilical cord
    • The amniotic fluid
    • The cervix
    • The oviduct

  9. What do the muscles in the wall of the uterus do during birth?

    • They cut the umbilical cord
    • They make the amniotic fluid
    • They relax so that the baby slides out
    • They contract and push the baby out

  10. A pregnant woman smokes. What is the most likely effect on her baby?

    • It gets more oxygen than usual
    • None: the placenta stops every harmful substance
    • It is more likely to be born early and small
    • It is more likely to be born late and large
Answers
  1. A sex cell: a sperm or an egg. Gametes are sex cells. The male gamete is the sperm. The female gamete is the egg.
  2. In the testes. The testes make sperm. The sperm ducts carry them away.
  3. An ovary. The two ovaries contain eggs. About once a month, one ovary releases an egg.
  4. 28 days. The cycle lasts about 28 days. It varies from person to person.
  5. An ovary releases an egg. Ovulation happens about halfway through the cycle, on about day 14.
  6. The nucleus of a sperm joining with the nucleus of an egg. At fertilisation, the two nuclei join to make one cell.
  7. In an oviduct. The sperm meet the egg in an oviduct. The embryo then moves on to the uterus.
  8. The umbilical cord. The umbilical cord carries the blood of the foetus to the placenta and back.
  9. They contract and push the baby out. Strong contractions of the uterus wall push the baby out through the vagina.
  10. It is more likely to be born early and small. Carbon monoxide from the smoke means that less oxygen reaches the foetus, so it grows more slowly.