Quiz

QUIZ

1. Which living thing defies one of the properties of living things by not being cellular in nature?

a. Bacteria b. Fungi c. Viruses d. Prokaryotes

Answer: c. Viruses, strictly speaking, are not cellular, being called viral particles instead of cells. They still, however, have many other properties of life.

2. What is not a feature of metabolism in living things?

a. Inorganic chemical reactions b. The uptake of organic material from outside the organism c. The internal processing of organic material d. The production of energy in the form of chemical energy or heat

Answer: a. Inorganic chemical reactions can happen outside of life and are not considered “metabolic reactions”. 3. A classification that applies to a group of the same type of cell that are connected to one another and communicate with one another is called what?

a. Ecosystem b. Organ system c. Tissue d. Organelle

Answer: c. A tissue is a group of the same type of cells that collectively interact and perform the same function toward the same end. They collectively contribute to an organ, along with other cell types.

4. What most defines the features and living things in an ecosystem?

a. The cell type of the organism b. The environmental conditions c. The nutrients available d. The number of predators

Answer: b. The environmental conditions dictate what organisms live in an ecosystem. The same organisms in the ocean cannot live in a desert ecosystem, and vice versa. What this means is that the environment plays a big role in which organisms (such as plants, animals, etcetera) live and interact with one another there.

5. Which inorganic molecule is not closely connected to most living things?

a. Oxygen b. Carbon dioxide c. Methane d. Water

Answer: c. Although there are rare organisms that use methane instead of oxygen, these are not representative of most life forms as most use oxygen along with carbon dioxide and water to make the building blocks or framework of organic molecules.

6. Which is a stable form of oxygen in living systems?

a. O3 b. O2 c. O4 d. O

Answer: b. In nature, there exists unstable oxygen formulations, such as ozone, which is O3, but it quickly breaks down into its stable form, which is O2. This balances out the binding needs of two oxygen molecules together.

7. What is the major energy-storing carbohydrate in plants?

a. Starch b. Glycogen c. Maltose d. Cellulose

Answer: a. Starch is the major energy-storing carbohydrate in plants. The same thing is true of glycogen in animal organisms.

8. Which triglyceride has the greatest number of hydrogen atoms in it?

a. Polyunsaturated fats b. Trans fats c. Monounsaturated fats d. Saturated fats

Answer: d. Saturated fats have the most hydrogen atoms associated with it because they have completely saturated all of the carbon atoms with hydrogen. The others have double bonds between carbon atoms that make for fewer electrons available for hydrogen bonding.

9. Amino acids contain several different side chains. What atom type is seen in some amino acids that is different from most other carbon-based organic molecules?

a. Magnesium b. Sulfur c. Iron d. Zinc

Answer: b. Sulfur is an added atom to some amino acids that make it different from most carbon-based organic molecules.

10. What atom is seen in amino acids that isn’t seen in the organic molecules, lipids and carbohydrates?

a. Iron b. Oxygen c. Phosphorus d. Nitrogen

Answer: d. All amino acids are nitrogen-based molecules, having an amine group as part of every amino acid molecule.