Cells

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Cells

Cell Structure

An organism's genes are contained in which part of each cell? *

1 point

The chloroplasts

The cell membrane

The nucleus

The cytoplasm

Prokaryotic cells contain… *

1 point

flagellum

plasmid DNA

chromosomal DNA

All of the above

There are 46 chromosomes (23 PAIRS) in human body cells which contain… *

1 point

energy from respiration

the DNA and genes of a human

the organelles required for respiration

Which of these statements about bacteria is false? *

1 point

Bacteria are all single-celled organisms

Bacteria have a nucleus

Bacteria have a cell membrane

Bacteria have a cell wall

Microscopes

Which is the correct equation for magnification?

1 point

Magnification = size of image / real size of object

Magnification = real size of object / size of image

Magnification = real size of object x size of image

Clear selection

Which type of microscope has a higher resolution? *

1 point

A light microscope

An electron scanning microscope

Transport in cells

Which gases move by diffusion into and out of plant leaves? *

1 point

Carbon dioxide and argon

Carbon dioxide and oxygen

Oxygen and argon

Potassium and nitrates

Where does osmosis take place in plant cells? *

1 point

Atmosphere

Roots

Chloroplasts

Hair

How are the three pairs of external gills on this Axolotl adapted to maximise exchange of gases? *

1 point

They are thin and have a small surface area

They are thin and have a large surface area

Cell Division

When cells divide for the purpose of growth and repair, the process is called… *

1 point

mitosis

meiosis

Which type of cell, as a result of being unspecialised, offers the chance to treat some illnesses? *

1 point

Tree cells

Leaf cells

Branch cells

Stem cells

Stem cells harvested from embryos are controversial because… *

1 point

the research into stem cells has little practical use, and so not a good use of money

the research into stem cells involves doing experiments on adults

many believe that these embryos are alive and so their use in research is immoral

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