Bioscience - Cells 2020

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1. A chromosome is

  • A carefully folded DNA strand
  • A collection of loose nucleic acids
  • A small segment of DNA
  • A collection of base pairs (steps from the spiral staircase model) of DNA
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2. The sites of ATP synthesis require

  • Oxygen and Glucose
  • Water and Oxygen
  • Carbon dioxide and lactic acid
  • Water and Glucose

3. The nuclear envelope that surrounds the nucleus is ……

  • A triple layer with different size pores for selective transport in and out of the nucleus
  • Just the same as the whole cell perimeter membrane, but double like that of the mitochondria, but has more stringent security gated channels and pores
  • A tough cellulose perimeter with pores
  • A membrane composed of chitin, extra protein and pores

4. The site of ATP synthesis is

  • The peroxisome
  • The mitochondria
  • The lysosome
  • The endoplasmic reticulum

5. The lipids of the cell membrane

  • Help stabilise the membrane
  • Are hydrophobic (hate water)
  • Are hydrophilic (like water)
  • Act as cell surface identity markers
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