Advertisement Upgrade to remove ads

The two strands of DNA are bonded to one another by

HYDROGEN BONDS

GCCCAAAG is a molecule of

cannot tell as written

DNA is characterized by what feature?

Deoxyribose & Thymine

DNA replication is

semiconservative

The term antiparallel

refers to the opposite orientation of the two strands in DNA

The specific sequence of nucleotides in the DNA to which the RNA polymerase binds is the

promoter region

How many nucleotides are in a codon?

3

There are ___ codons to code for the 20 possible amino acids.

61

May be or is an RNA molecule

GGGCCCA AND GCCCUUA

The placement of the amino acid during translation is determined by the

complementarity of the codon-anticodon

A stop codon

codes for no amino acid

Gene regulation may entail

Turning on genes only when needed
Turning off genes when not needed
Turning on or off entire groups of genes

The set of genes in bacteria that are linked together and transcribed as a single unit is referred to as an

operon

The molecules that bind to a repressor and cause it to no longer bind to the operator are called

inducers

Adenine binds to thymine via 3 hydrogen bonds

FALSE

one end of a strand of DNA is different from the other end

TRUE

DNA replication is usually unidirectional

FALSE

There are 4 functional types of RNA

FALSE

The anticodon determines which amino acid is linked to its tRNA

TRUE

Why is it a good idea for a bacterial cell to be able to utilize glucose FIRST as an energy source (until it's used up, THEN switch to lactose?

Glucose is an easier compound to break down and obtain energy from than lactose & it's about conservation of energy-why expend the energy to make the extra enzymes for breaking down lactose when glucose is right there and doesn't need to extra enzymes for breakdown.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set