Cells Unit Test #3 Question Preview (ID: 11870)


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Genes are made of...
a) iron
b) DNA
c) denim
d) chromosomes

How many pairs of chromosomes do humans have?
a) 46
b) 23
c) 100
d) 31

What does homeostasis mean?
a) stable internal conditions
b) varied internal conditions
c) similar offspring
d) different offspring

What do white blood cells attack?
a) bacteria
b) viruses
c) both bacteria and viruses
d) golgi bodies

What is the main source of energy for living things?
a) polar ice caps
b) glaciers
c) volcanoes
d) sun

Where can eubacteria live?
a) in extreme cold
b) in extreme methane
c) in your mouth
d) in extreme salt

Which is NOT a type of archaebacteria?
a) heat loving
b) salt loving
c) cold loving
d) methane making

Who was the first person to see bacteria?
a) Anton Van Leeuwenhoek
b) Theodore Schwann
c) Robert Hooke
d) Albert Einstein

Plants need ___ to perform photosynthesis.
a) water
b) sunlight
c) carbon dioxide
d) water, carbon dioxide and sunlight

Diffusion occurs faster in _____ water.
a) cool
b) warm
c) salt
d) fresh

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