AP BIOLOGY

THE CELL

STRUCTURE AND FUNCTION OF THE CELL

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which cell organelle helps break down food molecules to release ATP energy?
A
ribosomes
B
mitochondria
C
vacuole
D
nucleus
Explanation: 

Detailed explanation-1: -In eucaryotes these reactions all take place in mitochondria, the organelle to which pyruvate and fatty acids are directed for acetyl CoA production (Figure 2-78). We should therefore not be surprised to discover that the mitochondrion is the place where most of the ATP is produced in animal cells.

Detailed explanation-2: -So, although mitochondria do not need energy from ATP to make ATP, they do require a precursor like sugar or fat to extract energy from and transfer the energy into 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: -Cells that need a lot of energy, like muscle cells, can contain thousands of mitochondria. Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration.

Detailed explanation-5: -Mitochondria Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell’s biochemical reactions.

There is 1 question to complete.