(03.06 mc)

which of the following is true regarding the expression of a chromosomal genetic mutation that is expressed on a recessive allele? (1 point)

a. the mutation will be expressed only in individuals that are heterozygous for the gene.

b. the mutation will be expressed approximately 50 percent of the time.

c. the mutation will be expressed consistently when the mutation occurs on a recessive allele.

d. the mutation will be expressed only if the individual has two copies of the recessive allele.

The diagram illustrates the activity of vesicles during a cellular process.

Food provides molecules that serve as fuel and building material for all organisms. plants undergo photosynthesis and make their own food. other organisms, like us and the horse seen above, are consumers and eat food. how do all organisms use food as fuel? be sure to include the name of the process in your answer. me.

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.