Which of the Following Best Summarizes What We Mean by Dark

question 48

Multiple Choice

Which of the following best summarizes what we mean by dark matter?

• A)matter that we have identified from its gravitational effects but that we cannot see in any wavelength of light
• B)matter that may inhabit dark areas of the cosmos where we see nothing at all
• C)matter consisting of black holes
• D)matter for which we have theoretical reason to think it exists,but no observational evidence for its existence

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Definitions:

Origin of Replication

A specific site on the DNA where replication begins.

Hydrogen Bonds

Weak bonds between molecules or within them, involving hydrogen atoms in polar covalent bonds, crucial in the structure of DNA and proteins.

Hydrolysis

A chemical reaction that involves the breaking of a bond in a molecule using water.

Single DNA Strands

Individual strands of deoxyribonucleic acid that carry genetic information, not paired as in the double helix structure.