Biology Proctored Exam Penn Foster Questions and Answers 100% Pass
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Biology Proctored Exam Penn Foster
Questions and Answers 100% Pass
What is the function of the cell's cytoplasm?
To provide a medium for chemical reactions and support organelles.
What is the role of DNA polymerase in DNA replication?
To synthesize new DNA strands by adding nucleotides c...
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Biology Proctored Exam Penn Foster
Questions and Answers 100% Pass
What is the function of the cell's cytoplasm?
✔✔ To provide a medium for chemical reactions and support organelles.
What is the role of DNA polymerase in DNA replication?
✔✔ To synthesize new DNA strands by adding nucleotides complementary to the template
strand.
Which organelle is responsible for producing ribosomal subunits?
✔✔ Nucleolus
What is the primary function of the cell membrane's protein channels?
✔✔ To facilitate the transport of specific molecules across the membrane.
What is the term for a change in the DNA sequence of an organism?
✔✔ Mutation
1
,What type of bond is formed between amino acids in a protein chain?
✔✔ Peptide bond
What is the term for the study of how genes are expressed and regulated?
✔✔ Gene expression
Which type of RNA is involved in bringing amino acids to the ribosome during protein
synthesis?
✔✔ tRNA (transfer RNA)
What is the primary role of the chloroplasts in plant cells?
✔✔ To capture light energy and convert it into chemical energy through photosynthesis.
What is the function of the cell's ribosomes?
✔✔ To synthesize proteins based on genetic instructions from mRNA.
What is the purpose of the cell's endoplasmic reticulum (ER)?
✔✔ To synthesize and transport proteins (rough ER) and lipids (smooth ER).
2
,Which part of the cell contains genetic material in eukaryotes?
✔✔ Nucleus
What is the role of the cell’s cytoskeleton?
✔✔ To provide structural support and facilitate movement within the cell.
What process involves the division of a cell's nucleus and is part of cell division?
✔✔ Mitosis
What is the term for the process where a cell undergoes programmed cell death?
✔✔ Apoptosis
Which cell structure is responsible for sorting and packaging proteins for secretion?
✔✔ Golgi apparatus
What is the primary function of the cell’s lysosomes?
✔✔ To digest and break down cellular waste and debris.
3
, What process do cells use to regulate the internal environment, such as nutrient and ion
concentration?
✔✔ Homeostasis
What is the role of the mitochondria in energy production?
✔✔ To convert glucose and oxygen into ATP, water, and carbon dioxide through cellular
respiration.
Which organelle is involved in the synthesis of steroids and lipids?
✔✔ Smooth endoplasmic reticulum
What type of cell division results in the production of gametes?
✔✔ Meiosis
What is the main role of the cell's plasma membrane?
✔✔ To protect the cell and control what enters and exits.
4
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