B1.2 - What Happens In Cells

Question 1

DNA

Answer 1

Deoxyribose nuclei acid

Question 2

Chromosome

Answer 2

Strand of DNA containing genss

Question 3

How chromosomes in a human cell?

Answer 3

46 (23 pairs) - half from each parent

Question 4

Genes

Answer 4

Short Sequence of bases within DNA which codes for a protein

Unit of inheritance.

Question 5

How are the two strands of chromosomes together?

Answer 5

By bases (a, g, c, t)

Question 6

Shape of DNA

Answer 6

Double helix

Question 7

Nucleotides

Answer 7

Monomer unit found in DNA

made of organic base, ribose sugar and phosphate group

Question 8

DNA is a polymer

Answer 8

True

Question 9

Complementary base pairing

Answer 9

A - t

C - g

Question 10

mRNA (messenger RNA)

Answer 10

A complimentary single strand to DNA. Used to carry genetic code out of nucleus for protein synthesis

Question 11

Transcription

Answer 11

Process by which mRNA is formed

Question 12

Steps of transcription:

Answer 12

1. DNA unzips
2. One of the DNA strands acts as a template
3. complementary bases attach to the strand (u instead of t)
4. mRNA detaches and the DNA zips up
5. mRNA leaves nuclues into cytoplasm

Question 13

why is mRNA made?

Answer 13

Because DNA is too large to leave the nucleus and it is important for a copy of genetic material to remain in the nucleus at all times.

Question 14

What are proteins made of:

Answer 14

Amino acids

Question 15

The order of nucleotides, affects order of amino acids and in turn affects the protein produced

Answer 15

True, stimmt

Keep going, study, look forward to stuff after exams

Question 16

Translation

Answer 16

Process by which proteins are synthesised.