Based on molecular evidence, fungi were present on land at least ____ years ago

Although T4 encodes over 250 proteins, it does not encode its own RNA polymerase

Indicate whether the statement is true or false.

The nucleotides called pyrimidines include

A. uracil and cytosine. B. uracil and thymine. C. thymine and cytosine. D. thymine and adenine. E. cytosine and guanine.

All land plants produce a protected embryo during their reproductive cycle

1.True 2.False

The discovery that some bacteria ____ using enzymes that cut the viral DNA into pieces was one of the first steps in

the development of recombinant DNA technology. a. exchange fused plasmid DNA b. restrict important nutrients from leaving the bacterial cell c. resist viral infection d. cut up and recycle mRNA transcripts e. attach amino acids to tRNA molecules