Which of the following is a major function of the nucleolus?
A: Produce ribosomal RN
B: Package DN
C: Perform DNA repair.
D: Protect the genetic material from damage.
A: Produce ribosomal RN
B: Package DN
C: Perform DNA repair.
D: Protect the genetic material from damage.
举一反三
- Stability genes (also called caretaker genes) encode proteins that function in the repair of major genetic defects that result from aberrant DNA replication, ionizing radiation, or environmental carcinogens.
- Our package for canned fruit is not only seaworthy but also strong enough to protect the goods _____ possible damage. A: from B: under C: to D: away
- In the 1940s Avery, MacLeod, and McCarty extended Griffith's transformation experiment. Which of the following was determined to be the genetic material that was transformed? A: DNA B: enzymes C: polysaccharides D: protein
- DNA在复制、转录、表达分别产生（） A: DN B: RN C: 多肽 D: DN E: DN F: 蛋白质 G: RN H: DN I: 多肽 J: RN K: RN L: 蛋白质
- 真核细胞和原核细胞的遗传物质分别是（）。 A: DN B: RNA C: DN D: DNA E: RN F: DNA G: RN H: RNA