Daily Practice - 13+ Common Entrance

A slice of toast contains 12 g of carbohydrate, 4 g of protein and 3 g of fat. Each gram of carbohydrate and each gram of protein provides 4 kcal of energy, and each gram of fat provides 9 kcal. Calculate the total energy content of the toast.

Explain why muscles must work in antagonistic pairs rather than alone.

In the food chain 'grass, rabbit, fox', name the primary consumer.

In pea plants, the allele for tall (T) is dominant over the allele for short (t). State the possible genotype(s) of a tall pea plant.

Complete the word equation for aerobic respiration: glucose + oxygen produces ___ + ___.Complete the word equation for aerobic respiration: glucose + oxygen produces ___ + ___.