2. Catalase is an enzyme present in both animal and plant cells. It helps in breaking down of Hydrogen peroxide (toxic waste, produced as a result of cellular metabolism) and releases water and oxygen bubbles as a product, see the reaction below. An investigation was carried out to see the effect of pH on catalase. The rate of reaction can be measured by the amount of time it takes to collect 10cm3 of oxygen.

Formulate a hypothesis for this experiment.

Formulate a research question for this experiment.

Identify the variables (IV, DV, CV) for this experiment.

Suggest a weakness and an improvement for this design.

Suggest an extension to this investigation.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.