Q: Which of the following is a correct example of dehydration synthesis?

$\text{Monomer} + \text{Monomer} \rightarrow \text{Polymer} + H_2O$

Question 1

Which of the following correctly lists the levels of biological organization from smallest to largest?

Accepted Answer

Atom $\rightarrow$ Molecule $\rightarrow$ Organelle $\rightarrow$ Cell $\rightarrow$ Tissue $\rightarrow$ Organ $\rightarrow$ Organ System $\rightarrow$ Organism $\rightarrow$ Population $\rightarrow$ Community $\rightarrow$ Ecosystem $\rightarrow$ Biosphere

Question 2

Which property of water allows aquatic life to survive in cold climates due to ice floating on liquid water?

Accepted Answer

Ice floats because solid water is less dense than liquid water

Question 3

A scientist wants to test the effect of pH on enzyme activity. Which variable is the independent variable in this experiment?

Accepted Answer

pH

Question 4

Which functional group is responsible for energy transfer in ATP molecules?

Accepted Answer

Phosphate $(-PO_4)$

Question 5

Which statement best explains why water is called the 'solvent of life'?

Accepted Answer

Water dissolves polar and ionic compounds, facilitating chemical reactions in cells.

Question 6

Which of the following is a correct example of dehydration synthesis?

Accepted Answer

$	ext{Monomer} + 	ext{Monomer} ightarrow 	ext{Polymer} + H_2O$

Question 7

Which macromolecule type is correctly paired with its monomer and function?

Accepted Answer

Lipids — Glycerol & Fatty acids — Energy, membrane

Question 8

A cell is observed to have a plasma membrane, cytoplasm, DNA in a nucleoid, and ribosomes, but no organelles. What type of cell is this?

Accepted Answer

Prokaryotic cell

Question 9

Which structure is found in plant cells but not in animal cells?

Accepted Answer

Chloroplast

Question 10

Which cytoskeletal component is primarily responsible for cell shape and contraction?

Accepted Answer

Microfilaments (actin)

Question 11

According to the endosymbiotic theory, which organelle originated from an engulfed aerobic bacterium?

Accepted Answer

Mitochondrion

Question 12

Which of the following best describes the scientific method?

Accepted Answer

Observation $\rightarrow$ Hypothesis $\rightarrow$ Experiment $\rightarrow$ Analysis $\rightarrow$ Conclusion $\rightarrow$ Share

Question 13

Which bond type is responsible for the attraction between polar molecules, such as between water molecules?

Accepted Answer

Hydrogen bond

Question 14

Which property of water is most important for capillary action in plants?

Accepted Answer

Adhesion

Question 15

A protein's primary structure is determined by:

Accepted Answer

The sequence of amino acids

Question 16

Which of the following is NOT a function of microtubules in eukaryotic cells?

Accepted Answer

Shape and contraction

Question 17

Which of the following statements about prokaryotic and eukaryotic cells is correct?

Accepted Answer

Eukaryotic cells contain membrane-bound organelles, prokaryotic cells do not.

Question 18

Which of the following best explains why small cell size improves efficiency?

Accepted Answer

Smaller cells have a higher surface area to volume ratio, allowing faster exchange of materials.

Question 19

Which of the following is a correct pairing of a functional group and its function?

Accepted Answer

Carboxyl $(-COOH)$ — Acidic, fatty acids, proteins

Question 20

Which of the following is a correct sequence for the flow of genetic information in cells?

Accepted Answer

DNA $\rightarrow$ RNA $\rightarrow$ Protein

General Biology Chapters 1–4: Comprehensive Study Notes with Diagrams

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