Which type of molecule will require energy to cross the cell membrane? question 3 options: a) carbon dioxide b) na+ c) nonpolar molecules d) oxygen

What is involved in redox reactions

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Jane is blood type a her husband is blood type b. jane is puzzled because their daughter is type o. explain how the daughter inherited a blood type that neither of her parents had explain your answer