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Questions and Answers
Which structure is responsible for controlling the movement of substances into and out of a cell?
What is the primary function of a mitochondrion in a cell?
What is the primary role of ribosomes within a cell?
In which part of the cell does the Krebs cycle occur?
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Which statement best describes the structure of DNA?
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Study Notes
Cell Membrane
- Controls the movement of substances into and out of a cell
- Acts as a barrier, selectively allowing certain molecules to pass through
Mitochondria
- Primary function is to generate energy for the cell
- Responsible for cellular respiration, converting nutrients into ATP (adenosine triphosphate)
Ribosomes
- Responsible for protein synthesis
- Read genetic instructions from messenger RNA (mRNA) to assemble amino acids into proteins
Krebs Cycle
- Occurs within the mitochondria of a cell
- Part of cellular respiration, breaking down glucose and producing energy
DNA Structure
- Composed of two long strands of nucleotides, twisted into a double helix
- Each nucleotide consists of a sugar (deoxyribose), a phosphate group, and a nitrogenous base (adenine, thymine, guanine, or cytosine)
- The two strands are held together by hydrogen bonds between the nitrogenous bases, with adenine pairing with thymine and guanine pairing with cytosine.
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Description
Test your knowledge on key cell structures and their functions with this quiz. Questions cover mitochondria, cell membranes, ribosomes, and the Krebs cycle. Perfect for students studying cell biology.
