Compare the lytic and lysogenic reproductive cycles of a phage. 2. Compare the structures and reproductive cycles of the mumps virus and a herpes virus. 3. Describe three processes that contribute to the emergence of viral disease and note examples of each. 4. Explain why RNA viruses tend to have an unusually high rate of mutation. 5. Explain how the AIDS virus enters a host cell and reproduces. 6. Describe the structure of prions and explain how they cause disease. 7. Define and compare the processes of transformation, transduction, and conjugation. 8. Describe the roles of bacterial F factors. Define a plasmid and explain why R plasmids pose serious human health problems.

red color of the tomato due to the lycopene pigment in chromoplast, and the sunflower plastid is chromoplast

d i think its   answer d

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).