Which of the following is the correct sequence of steps in genetic engineering? . a. cut dna, recombinant dna, cloning, screening. b. screening, cut dna, recombinant dna, cloning. c. screening, cloning, recombinant dna, cut dna. d. cut dna, cloning, recombinant dna, screening

What is turgor pressure, what causes it, and what does it do for a plant?

The current thought on the structure of the cell membrane is: a. a static phosphate sandwich of lipids b. a fluid-mosaic of phospholipids and proteins c. a bilayer of proteins with static lipid molecules d. an impermeable bilayer of protein molecules e. a static and permeable phospholipid single layer

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?