DNA
What is the sub-unit of DNA
nucleotide
What is a protein made of
Amino acids
What do we call making an exact copy of DNA
DNA replication
Name 2 mutagens
heat, UV, X rays, tobacco tar
What do we call an animal that is active at night
nocturnal
State the base pairing rule
A with T C with G and vice versa
Name 2 human proteins
Keratin, haemoglobin, enzymes, melanin etc etc
Define mutation
change in order of bases in DNA
What is the difference between genotype and phenotype
Genotype is the alleles (the DNA) and phenotype is the physical appearance
How do plants take in water
Through their roots
What bonds join bases?
weak Hydrogen bonds
What do we call a protein that doesnt work
Non-functional
Define gene
Sequence of DNA that codes for a protein
What mutations can be inherited
Mutations in gametes
Give 2 characteristics of mammals
Have hair, feed babies with milk, warm blooded
How many bases to code for one amino acid
Three
What protein in abnormal in sickle cell disease?
haemoglobin
What do we call each different version of a gene
allele
What do we call a mutation that does not change protein or phenotype
silent
If I said an animal was piscine, what type of animal would it be?
Fish
How many possible triplets in DNA
64
How many nucleotides would it ake to code for a proteinmade of 10 amino acids
33, 30 and a stop triplet
How many chromosomes in a human gamete
23
Whose job is it to copy DNA
Enzymes
Which animal is responsible for the most human deaths each year
Human