In a DNA molecule with a molar mass of about 69000, the mass of adenine mononucleoid (A) in this DNA is 8625. The molar mass of a nucleoid is 345. How many mononucleotides T, G and C does this DNA contain?

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

Explain the cellular functions that occur when antibiotics attack a bacteria cell. a. antibiotics target the cell wall, cell membrane, and the processes of protein and nucleic acids production in bacteria to rupture the cell. b. antibiotics create dormant resistant endospores to preserve the genetic material and rupture the cell. c. antibiotics target the cell wall and form a bridge-like connection to form conjugation. d. antibiotics use binary fission to grow twice its size, replications its dna, and split into two cells.

Cells must be in osmotic equilibrium with their surroundings environments because if they swell or shrink thier membranes will rupture