Nucleic Acids Flashcards Preview

Bio 2 (Let's go Chagnon) > Nucleic Acids > Flashcards

Flashcards in Nucleic Acids Deck (28):
1

Large molecules composed of carbon, hydrogen, oxygen, nitrogen and phosphorous

Nucleic acids (DNA, RNA)

2

What's the central dogma?

DNA >> RNA >> proteins

3

It is found in nucleus, mitochondria and chloroplasts

DNA

4

It stores genetic information

DNA

5

It is found in nucleus and cytoplasm

RNA

6

processes DNA
transcription = DNA to RNA
translation = RNA to protein

RNA

7

Sugar—deoxyribose

DNA

8

It has four bases – adenine, thymine, cytosine, guanine

DNA

9

It has a double stranded molecule forms a HELIX

DNA

10

Sugar—ribose

RNA

11

It has four bases – adenine, uracil, cytosine, guanine

RNA

12

Single stranded

RNA

13

Nucleic acid's monomer?

Nucleotide

14

What is made up of:
1. Ribose sugar
2. Nitrogenous bases
-purines: adenine (A) and guanine (G)
-pyrimidines: thymine (T) in DNA only, cytosine (C), uracil (U) in RNA only
3. Phosphate group

Nucleotide

15

If the second carbon of the ribose sugar is attached with OH, what is the type of nucleic acid?

RNA

16

If the second carbon of the ribose sugar is attached with H, what is the type of nucleic acid?

DNA

17

What links nucleotides in a chain ?

Phosphodiester bond

18

Ribose and phosphate form its backbone.

DNA

19

What is antiparallel nature?

It means one strand is oriented 5’ to 3’, the other 3’ to 5’

20

The double helix consists of:
(3)

-2 anti-parallel sugar-phosphate backbones
-nitrogenous bases toward the interior of the molecule
-bases on opposing strands form hydrogen bonds with complementary bases (A with T; G with C)

21

What is carried in the sequence of nucleotides?

Genetic information

22

What are the 3 types of RNA?

mRNA
rRNA
tRNA

23

What is mRNA?

(messenger RNA): it transcribes DNA into RNA

24

What is rRNA?

(ribosomal RNA): the site for linking amino acids to form a polypeptide.

25

What is tRNA?

(transfer RNA): brings amino acids to rRNA and adds it to mRNA

26

An energy-rich molecule used to drive reactions in a cell

ATP

27

It is the adenine nucleotide with 3 phosphate groups

ATP

28

ATP stands for..

Adenosine triphosphate