Random Bio Facts Test!

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  • Created by: Polly
  • Created on: 30-04-15 18:42

1. Describe the achromosome of a sperm.

  • Made of protein filaments which break through outer egg surface.
  • Membranous sac containing enzymes that destroy outer egg surface.
  • Replacement for sperms nucleus- single chromosome, coding for DNA.
  • Contains mitochondria providing energy for sperm movements.
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Other questions in this quiz

2. Where are pollen grains produced?

  • In the ovules of the ovaries.
  • In the anthers of the stamens.
  • In the stamens of the anthers.
  • In the ovaries of the ovules.

3. What does contrary heart disease do?

  • Plaque builds up in the arteries, restricting blood flow.
  • Cells divide randomly, forming a tumour.
  • Alveoli break down and fuse together, greatly reducing the surface area for gas exchange.
  • The cilia are destroyed, meaning mucus isn't swept away.

4. What effect does a mutation have on an enzyme?

  • Denatures it, meaning its activation energy greatly increases.
  • Changes it's shape, changing the time taken to reach it's activation energy.
  • Changes it's active site, meaning the substrate no longer fits.
  • Causes cancer.

5. What does the placenta do?

  • Grows the umbilical chord, providing the embryo with nutrients.
  • Connects the embryo's heart with the mothers, keeping beating regular.
  • Takes nutrients and O2 in, and takes waste and CO2 out.
  • Takes waste and CO2 in, and takes nutrients and O2 out.

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