Mer Scott
Quiz by , created more than 1 year ago

Objectives: define the essential characteristics of living cells, consider the evolution of cells, summarise the biological classification of cells and organisms, outline the basic structures of cells, and describe important techniques to study cells.

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Mer Scott
Created by Mer Scott about 7 years ago
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L2 Basics of Cell Biology

Question 1 of 17

1

Choose the statement which BEST describes a cell.

Select one of the following:

  • The simplest collection of matter which is alive.

  • One of the structures which make up a living organism.

  • A little living thing.

Explanation

Question 2 of 17

1

Select the statements about cells that are CORRECT.

Select one or more of the following:

  • All organisms are made of cells.

  • Cells can make up multicellular organisms.

  • All cells are identical.

  • Cells come in many different types.

Explanation

Question 3 of 17

1

The 3 Domains of living things are:

Select one of the following:

  • Eukarya, Bacteria, Archaea

  • Eukarya, Bacteria, Prokarya

  • Bacteria, Archaea, Prokarya

  • Eukarya, Bacteria, Protists

Explanation

Question 4 of 17

1

The Kingdoms of Domain Eukarya are:

Select one of the following:

  • Animalia, Plantae, Fungi, Protista

  • Animalia, Plants, Fungi, Protists

  • Animals, Plants, Fungi

  • Animalia, Plantae, Fungi

Explanation

Question 5 of 17

1

Select from the dropdown list to complete the text.

Bacteria and Archaea are ( prokaryotic, eukaryotic, protists ).

Explanation

Question 6 of 17

1

Most plant and animal cells are between in diameter. Bacteria is typically between in diameter.

Drag and drop to complete the text.

    10-100μm
    1-5μm

Explanation

Question 7 of 17

1

1mm = ?

Select one of the following:

  • 1000μm

  • 100μm

  • 10μm

Explanation

Question 8 of 17

1

Which statement about the endosymbiont theory is INCORRECT?

Select one or more of the following:

  • Mitochondria and plastids as we know them may have evolved from aerobic cells being engulfed by larger anaerobic cells, and this is known as the endosymbiont theory.

  • The endosymbiont theory is supported by the fact that mitochondria and plastids carry some of their own genes within themselves.

  • The endosymbiont theory suggests that organelles with double membranes evolved from bacteria to insert into eukaryotic cells.

Explanation

Question 9 of 17

1

Cells are limited to their sizes due to the ratio of surface area to volume of the cell. (s.a./V = smaller for smaller cells.) A small ratio means greater efficiency of exchange between environments.

Select one of the following:

  • True
  • False

Explanation

Question 10 of 17

1

allow us to see cells. There are three important parameters in microscopy:
- , which is the of the image compared to the actual size
- , which is the of the image ("resolving of two points")
- , the difference between light and dark areas of image

Drag and drop to complete the text.

    Microscopes
    Magnification
    ratio
    clarity
    Resolution
    Contrast

Explanation

Question 11 of 17

1

Light Microscopy (LM) and Electron Microscopy (EM) are the two types of microscopy used to look at cells.

Select one of the following:

  • True
  • False

Explanation

Question 12 of 17

1

Electron microscopy lets you look at live cells.

Select one of the following:

  • True
  • False

Explanation

Question 13 of 17

1

Light microscopy is the only imaging technique that lets you look at live cells.

Select one of the following:

  • True
  • False

Explanation

Question 14 of 17

1

Select the statements about electron microscopy that are CORRECT.

Select one or more of the following:

  • EM uses electrons to "slice" through a very thin cross section of a cell and look at it.

  • Resolution is INVERSELY proportional to wavelength. Therefore as an electron microscopes particles have very low wavelengths, the images produced have very high resolutions.

  • Resolution is PROPORTIONAL to wavelength. Since an electron microscope's particles have long wavelengths of light, they therefore produce high resolution pictures.

Explanation

Question 15 of 17

1

Electron microscopes come in varieties. Firstly, . Specimens coated in a thin film of gold are scanned and that bounce back are used to create a 3D image of the specimen's surface. (These images are grey scale, only show us the of cells, and must be artificially/digitally coloured.)
Secondly, . This does not electrons, but passes them the specimen to produce an image of the cell's structure. Scattered electrons are collected by electromagnets to form an image. Again, the specimen must be stained with heavy metals.

Drag and drop to complete the text.

    two
    scanning electron microscopes
    transmission electron microscopy
    electrons
    surface
    reflect
    through
    internal

Explanation

Question 16 of 17

1

Which organelles do animal cells have that plant cells DO NOT?

Select one or more of the following:

  • Lysosomes

  • Centrosomes

  • Endoplasmic Reticulum

  • Ribosomes

Explanation

Question 17 of 17

1

Which of the following is are structures found in plant cells but NOT in animal cells?

Select one or more of the following:

  • Vacuole

  • Cell Wall

  • Plasmodesmata

  • Golgi

Explanation

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