What happens when cells cannot repair the damage caused by a mutagen a) the dna base sequence changes permanently b) the dna base sequence is not affected c) the organism is not affected d) the organism is affected temorarily

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.