Variation And Genetics Set 1

Results

#1. Beadle and Tatum in their experiments on genetics in 1941, used the

bacteriophase

bacteria

Neurospora

Rhizopus

#2. Which of the following is true of Neurospora?

It is an autotroph

Is a parasite

Can grow in minimal medium

Black bread mold

#3. Which is the following is present in place of glutamic acid in sickle cell trait?

bases

phosphate

groups

fatty acids

sugars

#4. Instructions for the order of amino acids in a polypeptide chain are coded along a DNA strand into the sequence of:

bases

sugars

phosphate groups

fatty acids

#5. The enzyme which is used to break open the plasmid ring is called:

recombinant enzyme

restriction enzyme

reductase enzyme

carboxylase enzyme

#6. Of the 64 codons, how may code for amino acids?

#7. About how much of the DNA in a eukayotic cell is expressed at any one time?

1 percent

20 percent

50 percent

80 percent

#8. The function of mRNA is to

provide specific binding sites for a series of specific tRNA molecule.

Hold a group of ribosomes together

Transfer the genetic code to rRNA

Transfer the genetic code to DNA

#9. the function of tRNA is to

form a site for protein synthesis

transcribe the genetic code

transport specific amino acids to specific sites on the mRNA

synthesize amino acids

#10. Which of the following unwound double helix of DNA during replication?

DNA ligase

Primase

DNA polymerase

Helicase

Finish