Multiple choice questions:1-5bbcdd6-10backbc1-kloc-0/5adcab16-20cdbcc21-25abcaa.

Non-multiple choice questions: 26. (1)f DNA (2) deoxynucleotide e is F 1 molecular phosphoric acid 1 molecular deoxyribose 1 molecular nitrogenous bases 4 (3)C, h, o, n, P b, c, D (4) phosphate-pentose-base 27. (1) composition and function of leaf (2) mesophyll cell (3) population (4) 28. (1)HIV virus immunity (2) Cell structure Live virus can't live independently. (1) Bacteria (2) have cell membrane and cytoplasm, and have no nuclear membrane. (3) Bacteria are heterotrophs and cyanobacteria are autotrophs. 30.( 1) The central barrel of the objective lens (2) is equipped with a low-power lens (3). (4) Various cell membranes, cytoplasm and nuclei are unified. (5)① Cover the wave plate. (2) First find the object with a low-power lens, and then use a high-power lens.

Physical Volume One Answer-

Multiple choice questions: 1. C2 bd3。 CD 4。 C5.B6.BCD 7。 B8.B9.B 10。 B 1 1。 D 12。 ABC fill in the blanks 13. 14. (10.8,150)15. (0.02, large) 16. (2 ,6) 17. (Root number 3) Experimental question 18.