Amino acid-derived and peptide hormones are unable to diffuse across a cell membrane because they are .
a. large
b. too complex
c. lipid-based
d. not easily dissolved in blood
e. polar

Pink fur (p) is dominant to purple fur (p) in hamsters. two heterozygous pink hamsters are crossed. what is the probability that these two parents will have an offspring with purple fur? 2/4, 1/2 or 50% 1/4 or 25% 3/4 or 75% 4/4 or 100% there is no chance for this type of offspring

The polio virus can cause skeletal muscle paralysis by destroying neuron cell bodies. what area of the spinal cord is destroyed

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet