MCAS Biology Review

Front

What is collagen?

Back

Collagen is a protein found in connective tissue throughout the human body, made up of three twisted amino acid chains.

Front

Why is collagen classified as a protein?

Back

Collagen is classified as a protein because it is made up of amino acids.

Front

What role do enzymes play in chemical reactions?

Back

Enzymes speed up the rate of chemical reactions.

Front

What type of relationship exists between a parasite and its host?

Back

Parasitism is a relationship where one organism benefits at the expense of another.

Front

What is the probability of an offspring having white fur if two heterozygous tigers mate?

Back

The probability is 1/4.

Front

What caused the extinction of passenger pigeons?

Back

Passenger pigeons became extinct because hunters killed them faster than they could reproduce.

Front

Define commensalism.

Back

Commensalism is a type of symbiotic relationship where one organism benefits and the other is neither helped nor harmed.

Front

Define mutualism.

Back

Mutualism is a symbiotic relationship where both organisms benefit from the interaction.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles mask the effect of recessive alleles in heterozygous individuals.

Front

What is a heterozygous genotype?

Back

A heterozygous genotype has two different alleles for a particular gene.