High School Biology Revision! Trivia Quiz

Answer: Foods high in protein

Phenylketonuria is extremely rare and is caused by the pairing of two faulty recessive alleles (one from each parent), that control the enzyme responsible for breaking down the amino acid phenylalanine, which is in protein. This why people affected cannot eat foods high in protein such as meat, milk,cheese, eggs, fish.
If it is not noticed at birth, phenylalanine builds up in the blood because the right enzyme is not there to get rid of it and the excess phenylalanine causes permanent brain damage.

Answer: Homozygous Recessive

Lower case letters represent recessive alleles while upper case letters represent dominant alleles. If my cat had Bb and BB for its genotype the dominant allele B would be expressed and the result would be purple fur, but because it has the two recessive forms of the purple fur gene, it has pink fur.
The genetics for real cat coloring are far more complicated than this, as the color/s of a cat are controlled by more than two kinds of alleles.

Answer: Asthma

Anemia is when there is lack of red blood cells to transport oxygen around the body. Iron deficiency is the most common cause of anemia. In leukemia and iron deficiency anemia the body does not produce enough red blood cells. In malaria the red blood cells are destroyed by a parasite carried by mosquitos.

Although some symptoms of asthma and anemia are similar; feeling tired, breathless and dizzy, asthma does not cause anaemia.

Answer: Nitrogen

All proteins must contain nitrogen. Legumes such as peas and beans are high in protein because they share a mutualistic relationship with Rhizobium bacteria in the soil. The bacteria give the plant nitrogen in the form of nitrate ions in exchange for glucose from the root nodules.

Answer: Auxin

Auxin causes cells in the stem of the plant to elongate which bends the stem towards the direction of the light. Auxin is also produced in root tips to make the roots bend downwards so they will grow into the soil.

Answer: Intraspecific competition

Interspecific competition is competition between members of different species. My teacher told me to remember it like this:
Intra- Intranet - a network where information can only be exchanged and viewed by members of one company or organization.
Inter - Internet - a network where information can be exchanged be and viewed by lots of different people.

Answer: Their body produces thick mucus which blocks the lungs and digestive system.

Cystic fibrosis is an inherited disease caused by a recessive form of the CF gene. The recessive form of the gene does not make the correct protein to transport chloride ions across the cell membrane. In people affected, chloride ions build up in the cells and attract excess water.

The body tries to get rid of the excess water and chloride ions from the cells by producing thick, sticky mucus. Because the glands which produce the mucus are in the lungs, pancreas, intestines, liver and stomach, digestion and breathing are affected. People with cystic fibrosis often get serious lung infections because the mucus traps bacteria, which can be fatal.

Answer: Cyanide

Cyanide stops ATP from forming by blocking the active site of an enzyme called cytochrome oxidase. Cytochrome oxidase allows H+ ions to pass through a channel in the matrix,(of the mitochondria) where they are reused to become ATP.

Answer: Facilitate bio-chemical reactions

Enzyme are catalysts. This means they speed up a chemical reaction. They do this by lowering the amount of energy required to make the reaction happen. Without enzymes we would all die because vital chemical reactions which take place in our bodies would happen too slowly for our bodies to work.

Answer: A relationship between two species where one species gains no benefit while the other species is harmed.

Amensalism is one type of interaction between different species. An often quoted example involves the black walnut, which derives no benefit from the plants surrounding it while, at the same time, killing the plants.