UNIT 3 MULTIPLE CHOICE

Question 1

what is prokaryote gene regulation?

Answer 1

ability of an organism to control which genes are transcribed

Question 2

what is an operon?

Answer 2

section of DNA that contains the genes for the protein needed for specific metabolic pathway

Question 3

what is eukaryote gene regulation?

Answer 3

controlling transcription-transcription factors ensure that a gene is used at a right time and proteins are made in right amount

Question 4

what are hox (homeobox) genes responsible for?

Answer 4

general body patterns of most animals

Question 5

what does the RNA interference can stop?

Answer 5

mRNA from translating its message

Question 6

what is mutations?

Answer 6

permanent change that occurs in a cell’s DNA

Question 7

what are the three types of mutations?

Answer 7

-point mutation
-insertion
-deletion

Question 8

what substitutions leads to? what does it change?

Answer 8

-lead to genetic disorders
-both folding and stability of the proteins

Question 9

what are the causes of mutations?

Answer 9

-occur spontaneously

-chemicals and radiation also can damage DNA
-high energy forms of radiatian (xray, gamma rays) are highly mutagenic

Question 10

what cell mutation are not passed on the next generation?

Answer 10

somatic (body) cell

Question 11

what cell mutation are passed on the organism’s offspring and will be present in every cell of the offspring?

Answer 11

sex-cell mutation

Question 12

what is genome?

Answer 12

all the genetic material in the chromosomes of a particular organism

Question 13

fill up the analogy of the ff:
Genome
Chromosome
Genes
Codons
Nuccleotides

Answer 13

Genome-genetic autobiography (instruction manual)
Chromosome-chapters (46 chaps)
Genes-sentences (made up of dna)
Codons-words (3-letter words)
Nucleotides- letters (4 letter: A,T,C,G)

Question 14

what is the meaning DNA?

Answer 14

-deoxyribonucleic acid

Question 15

a polymer of monomers are called?

Answer 15

nucleotides