21. Which group of plants evolved first?

Prokaryotic cells reproduce when a single cell spits into two cells

Semiconservative replication implies that: Group of answer choices each of the new double stranded DNA molecules contains one of the original intact strands and one completely new strand.

The base pairs in a DNA strand are held together with hydrogen bonds. If the two nitrogenous bases in each pair were held together with covalent bonds instead of hydrogen bonds, what effect would it have on the cell?

Creation of an unnatrually uniform sample to representt a diverse population can be avoided by

Complex or Simple carbohydrates do not take long to digest and cause blood sugar levels to rise quickly Unused glucose that is converted to blood sugar or glycogen or sucrose is stored in the liver.

What is a theory in biology

How might damaged alveoli affect the o2 level in the blood

The electrons of an atom occupy one or more areas of space called

The nucleus and other organelles of a neuron are primarily housed in which part of the cell? axon dendrite glial cell cell body none of the choices is correct.

What does every letter of the mRNA strand correspond to? (there is no chain to go with this question)