Cell Biology 112 Exam 1 PCC Questions
and Answers Graded A+
What structure controls the movement of substances in and out of the cell?
Cell membrane
Which organelle is known as the powerhouse of the cell?
Mitochondria
What is the main component of the cell wall in plant cells?
Cell...
Cell Biology 112 Exam 1 PCC Questions
and Answers Graded A+
What structure controls the movement of substances in and out of the cell?
✔✔Cell membrane
Which organelle is known as the powerhouse of the cell?
✔✔Mitochondria
What is the main component of the cell wall in plant cells?
✔✔Cellulose
Which type of cell lacks a nucleus?
✔✔Prokaryotic cell
What is the primary function of ribosomes?
✔✔Protein synthesis
1
,What is the jelly-like substance inside the cell called?
✔✔Cytoplasm
How do chloroplasts contribute to plant cells?
✔✔Chloroplasts conduct photosynthesis, converting light energy into chemical energy.
What role do lysosomes play in the cell?
✔✔Lysosomes break down waste materials and cellular debris.
Which process involves the movement of water across a semi-permeable membrane?
✔✔Osmosis
What is the function of the endoplasmic reticulum?
✔✔The endoplasmic reticulum synthesizes proteins and lipids and transports them within the
cell.
What type of transport requires energy to move substances against their concentration gradient?
✔✔Active transport
2
, Which organelle is involved in modifying and packaging proteins for secretion?
✔✔Golgi apparatus
What is the function of the cytoskeleton?
✔✔The cytoskeleton provides structural support and aids in cell movement.
Which molecule serves as the primary energy currency in cells?
✔✔Adenosine triphosphate (ATP)
What is the role of DNA in the cell?
✔✔DNA stores and transmits genetic information.
What is the significance of the fluid mosaic model?
✔✔The fluid mosaic model describes the structure of the cell membrane as flexible and
composed of various proteins embedded in a phospholipid bilayer.
3
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