Biology: How Life Works Chapter 3 Pre-Class Assignment

The idea that, when life originated on Earth, a macromolecule other than DNA served the role of information storage and that this same macromolecule carried out catalysis is called the _____ hypothesis.

RNA world

The base uracil pairs with:

adenine

An organism's genomic DNA is analyzed and found to contain 22% thymine. What percentage of that organism's DNA is guanine?

28%

One function of the spliceosome is to: (Select all that apply.)

???

Which of the following DNA molecules would be more stable under conditions of increasing temperature?

A DNA molecule that has more guanine and cytosine nucleotides

The central dogma of molecular biology states that information flows from:

DNA to RNA to protein.

Deoxyribonucleic acid is used for: (Select all that apply.)

Storage of information AND transmission of information

Which of the following is true about the structure of a double-stranded DNA molecule?

The diameter of a DNA molecule is the same along its entire length due to the specific complementary base pairing of the DNA nucleotides.

A single unit of heredity that contains the information for an individual protein is referred to as a

gene

The type of RNA that physically interacts with a ribosome, providing the sequence information for a specific protein, is abbreviated:

mRNA

Translation is the process by which:

ribosomes synthesize protein from information in an RNA molecule.