[Pre Transcription - compelete]

Which terms describe a bacterial chromosome? Select all that apply.

 

single stranded

circular

linear

double stranded

composed of DNA

composed of RNA

circular

double stranded

composed of DNA

A collection of genes that are transcribed together as a single mRNA is called a ___. This would most likely be found in a _____ genome.

operon

bacterial

Which bases are found in RNA? Select all that apply.

 

nicotinamine (N)

thymine (T)

cytosine (C)

guanine (G)

uracil (U)

adenine (A)

cytosine (C)

guanine (G)

uracil (U)

adenine (A)

Which of the following will stay in the nucleus? Select all that apply.

 

intron

5' UTR

3' UTR

poly-A tail

exon

5' cap

intron

Which of the following are found in a mature mRNA after RNA processing is complete? Select all that apply.

 

intron

poly-A tail

5' cap

5' UTR

exon

promoter

3' UTR

poly-A tail

5' cap

5' UTR

exon

3' UTR

Which of the following contains protein-coding sequence? Select all that apply.

 

5' UTR

promoter

exon

3' UTR

intron

exon

A region of DNA is shown below. The template strand is the strand on the top. Select the mRNA that will be made from this sequence.

3'- GGT GAA CGT AAC GCA -5'

5'- CCA CTT GCA TTG CGT -3'

 

3'- CCA CUU GCA UUG CGU -5'

3'- GGU GAA CGU AAC GCA -5'

5'- CCA CUU GCA UUG CGU -3'

5'- GGU GAA CGU AAC GCA -3'

5'- CCA CUU GCA UUG CGU -3'

A region of DNA is shown below. The template strand is the strand on the bottom. Select the mRNA that will be made from this sequence.

5'- ACC GTA AGT CGC AAA -3'

3'- TGG CAT TCA GCG TTT -5'

 

3'- UGG CAU UCA GCG UUU -5'

3'- ACC GTA AGT CGC AAA -5'

5'- ACC GTA AGT CGC AAA -3'

5'- ACC GUA AGU CGC AAA -3'

5'- UGG CAU UCA GCG UUU -3'

5'- ACC GUA AGU CGC AAA -3'

Imagine the following scenario: During a high-flood season, a lake overflows its banks and some resident freshwater stickleback fish are carried out to the ocean. Which outcome most likely to occur?

 

More fish without pelvic spines will be eaten by large-mouthed predators

when they reach salt water, individual fish will grow pelvic spines

More fish without pelvic spines will be eaten by large-mouthed predators

In the film, Dr. Bell notes that in multiple freshwater populations and at multiple times in history, the frequency of stickleback fish with pelvic spines decreased and the frequency of stickleback fish with reduced pelvises increased. This demonstrates that:

 

similar environments select for similar genetic changes.

the pelvis of the marine fish is destroyed by freshwater.

only fish with smaller pelvises migrate to freshwater.

similar environments select for similar genetic changes.

Based on the video "Evolving Bodies, Evolving Switches", is the following statement true or false?

Mutations are always bad.

 

True

False

False

Based on the video "Evolving Bodies, Evolving Switches", is the following statement true or false?

Dramatic changes in traits, such as the loss of limbs, can occur through mutations affecting a single gene.

 

True

False

True

Based on the video "Evolving Bodies, Evolving Switches", is the following statement true or false?

Evolutionary change always takes millions of years or more.

 

True

False

False

Eukaryotic transcription is terminated immediately after the last protein-coding nucleotide.

 

True

False

False

RNA polymerase synthesizes pre-mRNA in which direction?

 

2' -> 3'

5' -> 3'

3' -> 5'

3' -> 3'

5' -> 3'