Biology CH 4: Part 1

Question 1

DNA history, and DNA structure

DNA is short for

Answer 1

deoxyribonucleic acid

Question 2

DNA history, and DNA structure

___ proved that DNA carriers genetic info

Answer 2

Oswald Avery

Question 3

DNA history, and DNA structure

__ and __ discovered the structure of DNA

Answer 3

James Watson and Francis Crick

Question 4

DNA history, and DNA structure

James Watson and Francis Crick won the Noble Prize but who else deserved credit?

Answer 4

Rosalind Franklin

Question 5

DNA history, and DNA structure

What is DNA

Answer 5

Nucleic acid

Question 6

DNA history, and DNA structure

___ nucleic acid molecule that holds the genetic info that determines the traits of an organism.

Answer 6

DNA

Question 7

DNA history, and DNA structure

Why is the DNA structure important?

Answer 7

knowing the structure of DNA would enormously help explain how the human body works. (56 years later= cloning, gene therapy, genetically modified food, and human genome project)

Question 8

DNA history, and DNA structure

DNA is made up of subunits called___.

Answer 8

Nucleotides

Question 9

DNA history, and DNA structure

each nucleotide is mad up of

Answer 9

the sugar deoxyribose, a phosphate group, and a nitrogen base.

Question 10

DNA history, and DNA structure

There are 4 differ bases in a DNA molecule including..

Answer 10

adenine ( a purine), Cytosine (pyrimidine), Guanine ( a purine), and Thymine (pyrimidine). AT and GC together.

Question 11

DNA history, and DNA structure

Phosphate group from one nucleotide bonds with…

forms long chains with bases sticking out to the base.

Answer 11

the sugar of another

Question 12

DNA history, and DNA structure

what explains why adenine + thymine and cytosine+Guanine always occur in same amounts due to covalent bonds.

Answer 12

The bases opposite strands hydrogen bond to each other, always in AT and GC pairs.

Question 13

DNA history, and DNA structure

As the bases hydrogen bond to eachother, the structure twists like a spring forming a shape called a ___.

Answer 13

double helix

Question 14

DNA history, and DNA structure

the arrangement of ___ along the DNA stand forms they unique genetic code of all organisms.

Answer 14

the bases

Question 15

DNA history, and DNA structure

In DNA, ___ always forms hydrogen bonds with Guanine.

Answer 15

Cytosine

Question 16

DNA history, and DNA structure

The process of __ produces a new copy of an organism’s genetic information, which is passed on to a new cell.

Answer 16

replication

Question 17

DNA history, and DNA structure

The double-coiled shape of a DNA is called a ___

Answer 17

double helix