D Viruses and bacterial cell contain structures made from proteins
C. protein ,, mb if it’s wrong
Answer: D snowfall
Explanation:
40°F is 4.4°C
This temperature is about the temperature of ice.
Therefore, snow is expected to be present in that environment.
Acids and bases determine pH. Acids have pH 0 -7 while bases have pH 7 -14. Enzymes function within a very narrow optimum range of pH.
Different enzymes have different optimum pH values. This is the pH value at which the bonds within them are influenced by H+ and OH- ions in such a way that the shape of their active site is most complementary to the shape of their substrate.
Extreme changes in pH above or below the optimum as caused by strong bases and acids can cause the weak linkages e.g. hydrogen bonds in the enzyme's protein molecules to break permanently resulting in denaturation of the protein and impairing its functions because the enzyme can no longer conform its active site to complement that of its substrate and therefore no reaction can take place.
Relay Neurons are found between sensory input Anne motor output/response. Relay Neurons are found in the brain and spindle cord. They allow sensory and motor neurons to communicate. Motor Neurons are found in the central nerve system (CNS)
And control muscle movements