BIO H: DCA 1 (Units 1-3) Quizs (F25)

Which row in the table correctly shows what products (outputs) are produced during aerobic respiration?

• A

• B

• C

• D

Answer explanation

Aerobic respiration produces carbon dioxide, water, and ATP. Choice A correctly lists these outputs, making it the right answer.

The molecular structure in the image is a/an:

• ATP molecule

• Monosaccharide

• Amino Acid

• Nucleotide

• Glycerol & Fatty Acid

Answer explanation

The molecular structure depicted is an amino acid, characterized by a central carbon atom bonded to an amino group, a carboxyl group, a hydrogen atom, and a variable R group. This structure is distinct from other options.

Which way will water move?

• into the cell

• out of the cell

• in and out of the cell at an equal rate

Answer explanation

Water will move into the cell due to osmosis, where it moves from an area of lower solute concentration (outside the cell) to an area of higher solute concentration (inside the cell), causing the cell to swell.

Discuss the strategic importance of glycolysis in both aerobic and anaerobic respiration.

• Glycolysis is more important in aerobic respiration, as only aerobic respiration requires pyruvate.

• Glycolysis is equally important in both processes, as it creates pyruvate for both aerobic and anaerobic pathways.

• Glycolysis is more important in anaerobic respiration, as only anaerobic respiration requires pyruvate.

• Glycolysis is not important in either process, as it does not produce enough ATP to power the reactions.

Answer explanation

Glycolysis is crucial in both aerobic and anaerobic respiration as it generates pyruvate, which is utilized in both pathways. This makes it equally important for energy production regardless of the presence of oxygen.

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DOK Level 3: Strategic Thinking

Which term refers to the amount of energy needed for a chemical reaction to progress:

• Activation Energy

• Substrate Energy

• Kinetic Energy

• Enzymatic Energy

Answer explanation

Activation Energy is the term that refers to the minimum energy required for a chemical reaction to occur. It is essential for overcoming the energy barrier for the reaction to progress.

Based on the image, which of the following correctly describes the energy changes in reactions A and B?

• A: energy is absorbed during the reaction; B: energy is released during the reaction

• A: energy is released during the reaction; B: energy is absorbed during the reaction

• Both A and B release the same amount of energy

• A: exothermic; B: endothermic

Answer explanation

In reaction A, energy is absorbed, indicating it is endothermic. In reaction B, energy is released, indicating it is exothermic. Therefore, the correct choice is that A absorbs energy and B releases energy.

Which organelle is responsible for regulating the movement of substances into and out of the cell by acting as a selectively permeable barrier?

• Cell membrane

• Cell wall

• Endoplasmic Reticulum

• Golgi Apparatus (Body)

• Nucleus

Answer explanation

The cell membrane is responsible for regulating the movement of substances into and out of the cell. It acts as a selectively permeable barrier, allowing certain molecules to pass while blocking others, unlike the other organelles listed.

Which way will water move?

• into the cell

• out of the cell

• in and out of the cell at an equal rate

Answer explanation

Water will move out of the cell due to osmosis, as the concentration of solutes is higher outside the cell, causing water to flow towards the area of higher solute concentration.

When placed in a solution of 30% water 70% salt, what would happen to a cell that is 70% water?

• it will take in salt and swell

• it will take in water and swell

• it will lose water and shrink

• it will remain the same size

Answer explanation

In a 30% water and 70% salt solution, the cell, which is 70% water, will lose water to the surrounding hypertonic solution (higher salt concentration). This causes the cell to shrink.

In passive transport, particles move from and area of ____ concentration to _____ concentration.

• high to low

• low to high

• high to high

• low to low

Answer explanation

In passive transport, particles naturally move from areas of high concentration to low concentration, following the concentration gradient without the need for energy. Thus, the correct answer is 'high to low'.