AP BIOLOGY

THE CELL

STRUCTURE AND FUNCTION OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which cell organelles play a role in energy production by either building food molecules or breaking them down?I.nucleusII.mitochondrionIII.chloroplastIV.cell membrane
A
I, II, III, and IV
B
III and IV only
C
I and II only
D
II and III only
Explanation: 

Detailed explanation-1: -Mitochondria. Encyclopædia Britannica, Inc . The “powerhouses” of the cell, mitochondria are oval-shaped organelles found in most eukaryotic cells. As the site of cellular respiration, mitochondria serve to transform molecules such as glucose into an energy molecule known as ATP (adenosine triphosphate).

Detailed explanation-2: -Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell’s biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).

Detailed explanation-3: -Mitochondria are known as the powerhouses of the cell. They are organelles that act like a digestive system which takes in nutrients, breaks them down, and creates energy rich molecules for the cell. In cellular respiration sugar with the help of oxygen is broken down into ATP (energy molecule).

Detailed explanation-4: -Lysosomes are membrane-enclosed organelles that contain an array of enzymes capable of breaking down all types of biological polymers-proteins, nucleic acids, carbohydrates, and lipids.

Detailed explanation-5: -Lysosomes are the garbage disposal units of our cells, roaming around digesting cellular waste with their specialized enzymes and recycling excess or worn-out cell parts. Additionally, they may also be used to destroy invading viruses and bacteria.

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