Worksheet: Treating Infertility

In this worksheet, we will practice describing how hormones are used in assisted reproductive technology to treat infertility, and explaining how IVF and clomifene therapy work.

Q1:

IVF is a modern reproductive technology that can help people with infertility. What does IVF stand for?

  • AInterviable fertilization
  • BIntravital fertilization
  • CIntravenal fertilization
  • DIn vibro fertilization
  • EIn vitro fertilization

Q2:

A female hoping to conceive is not naturally producing mature eggs that are ready to be fertilized. Which hormone is she most likely to be offered in fertility treatments?

  • AEstrogen
  • BAdrenaline
  • CTestosterone
  • DFSH

Q3:

A female hoping to conceive is not ovulating regularly. Which hormone is she most likely to be offered in fertility treatments?

  • AAdrenaline
  • BProgesterone
  • CTestosterone
  • DLH

Q4:

The table below shows the ages of females undergoing IVF and the typical IVF success rates in the UK in 2010.

Age of Female<3535–3738–4041–43>43
Typical IVF Success Rate (%)33.327.518.47.12.1

1,000 women under the age of 35 will undergo IVF treatment. How many of these treatments will result in a successful pregnancy? Give your answer to 3 significant figures.

Q5:

The table below shows the ages of females undergoing IVF and their typical IVF success rates in the UK in 2010.

Age of Female< 3535–3738–4041–43> 43
Typical IVF Success Rate (%)33.327.518.47.12.1

1,000 women between the ages of 41 and 43 will undergo an IVF treatment. How many of these treatments will result in a successful pregnancy? Give your answer to the nearest whole number.

Q6:

Which of the following is not a reason a couple may be struggling to conceive a child naturally?

  • AThe female’s oviducts are blocked and eggs cannot be released from the ovaries.
  • BThe female is not producing enough FSH for oocyte (immature egg cell) maturation.
  • CThe female is not producing enough LH to trigger ovulation.
  • DThe male is not producing enough viable sperm.
  • EThe male is not producing enough estrogen for sperm maturation.

Q7:

What key scientific term is used to describe the inability of a person to conceive a child through natural methods?

  • AFertilization
  • BInfertility
  • CSterilization
  • DAbstinence

Q8:

The diagram provided shows a basic outline of the process of IVF.

Why is the female injected with hormones in stage 1?

  • ATo maintain the uterus lining
  • BTo increase the rate at which eggs are made
  • CTo increase the likelihood of a sperm reaching the ovaries
  • DTo stimulate oocyte (immature egg) maturation and ovulation

What is collected from the ovaries in stage 2?

  • AZygote
  • BEggs (ova)
  • CEarly embryo
  • DUterus cells

What happens in the final stage of IVF, represented by the number 3 on the diagram?

  • AThe developing embryos are placed back into the female’s uterus.
  • BThe eggs are checked for successful fertilization.
  • CThe eggs are provided with hormone therapy to stimulate growth.
  • DThe developing embryos are placed into a Petri dish.

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