4. Place the appropriate letter in the blank next to the parts of the small portion of an RNA molecule shown
and draw a line around one nucleotide.
Nitrogen bases
Ribose sugars
Phosphate groups

Describe your dna model. which part do the straws represent? the pushpins? the paper clips and the black dots you made with the marker?

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns)? .the cns involves the brain and spinal cord, and the pns involves the body nerves. the cns involves the body nerves, and the pns involves the brain and spinal cord. the cns involves sensory neurons, and the pns involves motor neurons. the cns involves motor neurons, and the pns involves sensory neurons.

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different