A -Level Molecules, Transport and Health_1

Does biology involve the study of living things, which are composed of chemical substances?

• True

• False

Which of the following statements is true regarding the dragonfly and the plant it is resting on?

• A) The dragonfly and the plant are both made of chemicals.

• B) The dragonfly is made of chemicals, but the plant is not.

• C) The plant is made of chemicals, but the dragonfly is not.

• D) Neither the dragonfly nor the plant are made of chemicals.

Which of the following statements is true regarding the cow and its need for salt?

• A) The cow needs the chemical known as salt to stay alive.

• B) The cow does not require any chemicals to stay alive.

• C) Salt is harmful to cows and should be avoided.

• D) The cow can produce its own salt and does not need to consume it.

Which of the following statements is true regarding the understanding of chemistry and its impact on biological systems?

• A) Understanding basic principles of chemistry enhances comprehension of biological systems.

• B) Chemistry has no relation to the understanding of biological systems.

• C) Biological systems can be understood without any knowledge of chemistry.

• D) Chemistry is only important for non-living systems and not for biological systems.

Which of the following statements is true regarding the impact of chemical bonds on the properties of compounds?

• A) The chemical bonds within and between molecules have no influence on the properties of compounds they form.

• B) Chemical bonds only affect non-organic compounds and have no impact on organic compounds.

• C) The properties of compounds are affected by the chemical bonds within and between molecules.

• D) Chemical bonds only affect the physical appearance of compounds and not their properties.

Which of the following statements is true regarding the impact of chemical bonds on the functions of compounds within the cell and the organism?

• A) Chemical bonds have no effect on the functions of compounds within the cell and the organism.

• B) The functions of compounds within the cell and the organism are solely determined by external factors, not chemical bonds.

• C) Chemical bonds play a significant role in determining the functions of compounds within the cell and the organism.

• D) The functions of compounds within the cell and the organism are completely independent of chemical bonds.

Which of the following statements is true regarding understanding the chemistry of water?

• A) To understand the chemistry of water, knowledge of chemical bonds and the creation of dipoles within molecules is necessary

• B) Understanding chemical bonds and dipoles has no relevance to comprehending the chemistry of water.

• C) The chemistry of water can be understood without any knowledge of chemical bonds or the creation of dipoles.

• D) Chemical bonds and dipoles have limited impact on the chemistry of water.

Which of the following statements is true regarding the dependence of all life on fundamental chemistry?

• A) All life is independent of fundamental chemistry.

• B) Fundamental chemistry has limited relevance to the existence of life.

• C) All life depends on fundamental chemistry.

• D) Fundamental chemistry only affects non-living entities.

The smallest unit of matter is

• molecule

• covalent bond

• atom

• electron

Which of the following statements is true regarding the formation of compounds when atoms of different elements react?

• A) When atoms of different elements react, they do not form compounds.

• B) The formation of compounds only occurs when atoms of the same element react.

• C) Atoms of different elements react to form compounds.

• D) Compounds can only be formed by atoms of the same element.