DNA

Question 1

D. What´s the full name for DNA?

Answer 1

deoxyribonucleic acid

Question 2

D. what is DNA?

Answer 2

molecule that carries genetic information in living things

Question 3

D. it belongs to the molecules of..

Answer 3

nucleic acids

Question 4

D. synonim for nucleic acids?

Answer 4

polynucleotides

Question 5

D. what is a polynucleotide?

Answer 5

a long chain of nucleotides

Question 6

N. what are the three things a nucleotide is made of?

Answer 6

• a nitrogenous base (A,C,T,G)
• a 5 carbon sugar molecule (Deoxyribose)
• a phosphate

Question 7

D. how does DNA transports and stores genetic information?

Answer 7

because of its double helix

Question 8

D. how does the bases specifically links?

Answer 8

AT, CG

Question 9

D. what links the bases?

Answer 9

hidrogen bonds

Question 10

D. what is a codon?

Answer 10

the order of bases along a single strand that constitutes the genetic code

Question 11

D. explain the idea of four letter alphabet

Answer 11

there´s a four letter alphabet, there are words made by three letters (bases) which code for an specific aminoacid

Question 12

D. one codon codes for an specific…

Answer 12

aminoacid

Question 13

G. name the 2 charactristics of the genetic code?

Answer 13

• its universal

- degenerate

Question 14

G. what´s a gene (2)?

Answer 14

is the basic physical and functional unit of heredity

Question 15

G. what´s a gene (3)?

Answer 15

a sequence of nucleotides at a given position in a given chromosome that codes for an specific protein

Question 16

G. what three parts make the gene nucleotide sequences?

Answer 16

• coding regions (exons) specifiy for a sequence of aminoacids
• non-coding regions (introns) dont specify for a sequence of aminoacids
• regulatory sequences: determine when and where the protein is made

Question 17

G. how many genes does humans have?

Answer 17

20,000 to 25,000 located in 46 chromosomes

Question 18

G. what is the human genome?

Answer 18

the total amount of genes in a human being.

Question 19

C. what´s a chromosome?

Answer 19

long chains of DNA and associated proteins.

Question 20

C. Chromosome structure. explain

Answer 20

histome proteins are proteins wrapped in DNA. 8 histone proteins create a nucleosome, and a compound of nucleosomes create a solenoid, which makes the chromosome.

Question 21

P arm is the…

Answer 21

small arm (petit)

Question 22

q arm is the…

Answer 22

long arm

Question 23

if you have XX you´re?

Answer 23

female

Question 24

if you have XY you´re?

Answer 24

male

Question 25

what´s karyotype?

Answer 25

a photograph of our chromosomes