Penn Foster Intro To Biology Proctored Exam Questions and Answers 100% Pass
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Penn Foster Intro To Biology Proctor
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Penn Foster Intro To Biology Proctor
Penn Foster Intro To Biology Proctored
Exam Questions and Answers 100%
Pass
What structure within the cell is responsible for maintaining its shape and providing support?
Cytoskeleton
Which type of RNA is involved in protein synthesis by carrying amino acids to the ribosome?
tRNA (tra...
Penn Foster Intro To Biology Proctored
Exam Questions and Answers 100%
Pass
What structure within the cell is responsible for maintaining its shape and providing support?
✔✔ Cytoskeleton
Which type of RNA is involved in protein synthesis by carrying amino acids to the ribosome?
✔✔ tRNA (transfer RNA)
What is the role of the smooth endoplasmic reticulum in the cell?
✔✔ To synthesize lipids and detoxify harmful substances
What is the primary function of vacuoles in plant cells?
✔✔ To store nutrients, waste products, and help maintain turgor pressure
What is the process by which cells engulf external particles or liquids?
✔✔ Endocytosis
1
,Which part of the cell cycle involves the replication of DNA?
✔✔ S phase (Synthesis phase)
What is the term for the division of the cytoplasm during cell division?
✔✔ Cytokinesis
What type of cellular transport does not require energy to move substances across the cell
membrane?
✔✔ Passive transport
What is the role of the cell wall in plant cells?
✔✔ To provide structural support and protection
What is the primary role of ribosomal RNA (rRNA) in the cell?
✔✔ To form the core structural and functional components of ribosomes
Which cellular organelle is primarily involved in the synthesis of steroids and lipids?
2
, ✔✔ Smooth endoplasmic reticulum
What is the process by which a cell divides to form four non-identical gametes?
✔✔ Meiosis
What is the role of the central vacuole in plant cells?
✔✔ To store nutrients and waste products, and maintain cell rigidity
What is the primary difference between passive and active transport in cellular processes?
✔✔ Active transport requires energy, while passive transport does not
What type of cell junction allows for the direct exchange of ions and small molecules between
neighboring cells?
✔✔ Gap junctions
What is the function of the nucleolus within the nucleus?
✔✔ To produce ribosomal RNA and assemble ribosomal subunits
3
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