Biology Practice (Interactive)

Which organelle is responsible for aerobic respiration and ATP production in eukaryotic cells?

Osmosis is best described as the movement of which of the following across a partially permeable membrane?

In the sodium-potassium pump, sodium ions are moved out of the cell and potassium ions are moved into the cell. This process is classified as which type of transport?

In a carbon cycle, which process releases carbon dioxide back into the atmosphere from living organisms?

A food chain is written as: grass -> rabbit -> fox -> hawk. If the grass produces 10,000 kJ of energy, approximately how much energy would be available to the hawk, assuming a 10% energy transfer efficiency at each trophic level?

Which human activity most directly contributes to eutrophication in freshwater ecosystems?

During which phase of meiosis do homologous chromosomes separate and move to opposite poles?

A plant with genotype TtYy undergoes self-pollination. What proportion of the offspring are expected to display both recessive traits (ttyy), assuming independent assortment?

During photosynthesis, in which stage are carbon dioxide molecules fixed into organic molecules using energy from ATP and NADPH?

Which component of the blood is primarily responsible for clotting at the site of a wound?