30.metaphase. It is the second phase of mitosis. Ith the help of spindle fibers chromosomes line up in the middle 31.salts and atp 32.active transport .ebergybin the form of atp is utilised. 33.haploid. Always half the number of chromosomes are produced from gametes 34.diffusion of water across a membrane from low concentration to high concentration 35.diploid 36. CO2 and O2. Gas molecules are extremely small and can pass. Whereas proteins cannot pass. 37.true Solution 30.metaphase. It is the second phase of mitosis. Ith the help of spindle fibers chromosomes line up in the middle 31.salts and atp 32.active transport .ebergybin the form of atp is utilised. 33.haploid. Always half the number of chromosomes are produced from gametes 34.diffusion of water across a membrane from low concentration to high concentration 35.diploid 36. CO2 and O2. Gas molecules are extremely small and can pass. Whereas proteins cannot pass. 37.true.