What holds the base pairs of DNA together? A. Covalent bonding B. Double helix C. Ionic bonding D. Hydrogen bonding

What are linnaeus two major contributions to taxonomy?

Glycoprotein spikes are found on the capsids of all viruses. a. True b. False

What could happen if the epiglottis fails to close correctly over the trachea when a person swallows A. the person may experience heartburn B. the person may choke C. the person will experience a heart attack D.

The majority of non-mammalian or non-avian animals are ectotherms and rely on the environment as their heat source. Which of the following are ectotherms? (check all that apply). a. Western fence lizardb. Xenopus (African clawed frog) c. Fruit Flyd.

Which cellular processes require chromosomes to be in their uncondensed state? Select all that apply: Select one or more: a. transcription b. absorption of glucose from surrounding environment of cell c. DNA replication d.

Give two abiotic factors which will affect the growth on a school playing field

What are the big four macromolecules common to living organisms, what are the subunits of each?

Match each process to the sphere at most directly involves

What are the four basic needs all living things must satisfy

What property makes water molecules stick together?