★ Pollution Quiz
Harmful ultraviolet radiation from the Sun is absorbed by
A. clouds
B. ozone molecules
C. soil
D. water
Select your answer:
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DNA Replication › ViewThe picture below shows the steps of DNA replication beginning with step one and ending with step three.
Because you are reusing the old, or parent, DNA strand DNA replication is said to be
_
A. Semi- Conservative
B. Semi-discontinuous
C. Continuous
D. Fully-Conserveative
Immunology: T cell Development › View
Where do T cells develop?
A. bone marrow
B. thymus