What is a nucleotide?

a. a set of three bases in a mRNA molecule

b. a set of three bases in a tRNA molecule

c. a sugar and a base and a phosphate

d. a sugar and a lipid and a phosphate

e. a base and a sugar

The nitrogenous bases in DNA are held together by ... A. Covalent Bonding B. Iconic bonding C. Hydrogen bonding D. Van der Waals forces

Natural resources that are naturally replenished over short periods are called a. nonrenewable resources. b. fossil fuels. c. sustainable resources. d. renewable resources.

Describe some of the factors that have contributed to the success of seed plants

What are mitochondria made of

List four (4) things that females should do to maintain reproductive health.

What can you learn from observing and comparing the physical traits of different birds?

In what way are lobsters similar to spiders?

Which amino acid is specified by the mrna code gcc? a. gly b. lys c. ala d. pro?

What are the three classifications of epithelial tissue? describe each?

About how much energy is transferred from a primary consumer to a secondary consumer? 90% of the original energy from the Sun 10% of the original energy from the Sun 10% of the primary consumer's energy 1% of the primary consumer's energy