1 markStudents were discussing how to remember the difference between two groups of cells, ‘many, minute and motile’ or ‘few, fat and fixed’.
What group of cells were they referring to?
Male and female gametes
Animal and plant cells
Red and white blood cells
Xylem and phloem cells
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1 markThe statements below are about different hormones in the human body.
Which of these statements are correct for testosterone?
1 and 2
2 and 4
3 and 4
4 only
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1 markThere are a number of hormones that control fertility in women.
Which one of these maintains the lining during pregnancy?
Oestrogen
Progesterone
FSH
Testosterone
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1 markThe diagram shows a human sperm cell. The sperm cell has many mitochondria in the mid section.
How do the mitochondria help the sperm carry out its function?
They carry the genetic information from the male parent.
They release energy for movement.
They help the sperm enter the egg.
They make proteins.
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1 markThe diagram shows the female reproductive system.
After ejaculation, which pathway will the male gamete take to fuse with the egg?
Vagina → cervix  → uterus → oviduct
Ovary  → oviduct → uterus → cervix
Vagina → uterus → cervix  → oviduct
Ovary  → uterus → cervix → vagina
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The diagram shows how the blood of a human fetus flows close to the mother’s blood in the placenta.
Â
Which substances are present at X in higher concentrations than at Y?Â
carbon dioxide and glucose
carbon dioxide and urea
glucose and oxygen
glucose and ureaÂ
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Which row correctly matches a hormone with its function in the menstrual cycle?
| Â | hormone | function |
| A | FSH | stimulates release of eggs |
| B | LH | stimulates release of eggs |
| C | oestrogen | maintains uterus lining |
| D | progesterone | repairs uterus lining |
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1 markThe diagram shows the menstrual cycle. This is a 28 day cycle.
Which time range in the cycle is the woman most likely to get pregnant?
Days 1 - 4
Days 7 - 10
Days 13 - 16
Days 20 - 23
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1 markThe graphs below show the levels of two hormones involved in the menstrual cycle and the thickness of the uterus lining.
Which of these statements is supported by evidence from the graphs?
Within 5 days of ovulation, the uterus lining gets thinner.
A large increase in progesterone always results in the thickening of the uterus lining.
Each time the oestrogen concentration increases the uterus lining gets thicker.
At ovulation the thickness of the lining is highest.
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