Biology: Section 2- Cells

Description

A-Level Biology (Section 2) Quiz on Biology: Section 2- Cells , created by Amy Le Grys on 13/05/2016.
Amy Le Grys
Quiz by Amy Le Grys, updated more than 1 year ago
Amy Le Grys
Created by Amy Le Grys over 8 years ago
20
1

Resource summary

Question 1

Question
Magnification equation
Answer
  • magnification= size of image / size of real object
  • magnification= size of real object / size of image

Question 2

Question
Before cell fractionation what is the sample put in?
Answer
  • A cold, buffered solution with a similar water potential to the sample
  • Nothing
  • A warmed solution with a high pH

Question 3

Question
What is homogenation?
Answer
  • The preparation of the sample for cell fractionation
  • The breaking down of cells in a homogeniser
  • The removal of foreign objects in a sample

Question 4

Question
What happens in Ultracentrifugation?
Answer
  • The cell fragments are separated in a centrifuge
  • Fragmentation of cells

Question 5

Question
At what speed are nuclei, mitochondria and lysosomes separated out?
Answer
  • Nuclei- 3500 min-1
  • Mitochondria- 16500 min-1
  • Lysosomes- 1000 min-1
  • Nuclei- 1000 min-1
  • Mitochondria- 3500 min-1
  • Lysosomes- 16500 min-1

Question 6

Question
Transmission electron microscope (TEM)
Answer
  • A thin sample is used to create a photomicrograph-not in colour. A photomicrograph is a 2D flat image due to the thinness of the sample and it has a resolution of 0.1 nanometres.
  • Sample does not need to be too thin as electrons don't penetrate. Creates a 3D image which can be coloured and it has a resolution of 20 nanometres.

Question 7

Question
What is in a Eukaryotic cell?
Answer
  • Nucleus
  • mitochondria
  • Chloroplasts
  • Endoplasmic reticulum
  • Golgi apparatus
  • Lysosomes
  • Ribosomes-80s
  • Ribosomes- 70s
  • Cell wall
  • Vacuoles

Question 8

Question
Structures in a bacteria cell
Answer
  • DNA
  • Cell wall
  • Nucleus
  • Plasmid
  • Capsule
  • Cell-surface membrane
  • Attachment protiens
  • Circular DNA
  • flagellum
  • Cytoplasm

Question 9

Question
What is in a Virus?
Answer
  • Capsid
  • Cell wall
  • Attachment protein
  • RNA
  • DNA
  • Capsule
  • Reverse Transcripase
  • matrix
  • Cytoplasm
  • lipid envelope

Question 10

Question
Order of mitosis
Answer
  • Telophase, Anaphase, Metaphase, Prophase
  • Prophase, Metaphase,Telophase, Anphase
  • Prophase, Metaphase, Anaphase, Telophase
  • Metaphase, Prophase, Anaphase, Telophase
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