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Penn Foster Intro To Biology Proctored Exam Questions and Answers 100% Pass

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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...

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  • September 6, 2024
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  • Penn Foster Intro To Biology Proctor
  • Penn Foster Intro To Biology Proctor
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Penn Foster Intro To Biology Proctored
Exam Questions and Answers 100%
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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




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