BTEC Level 3 Applied Science Unit 1 Biology Exam 2025 With Correct Answers.

BTEC Level 3 Applied Science Unit 1
Biology Exam 2025 With Correct
Answers




plasma membrane - correct answer a microscopic membrane of lipids and proteins (Phospholipid bilayer) that
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forms the external boundary of the cytoplasm of a cell or encloses a vacuole, and that regulates the passage of
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molecules in and out of the cytoplasm.
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Golgi apparatus - correct answer A system of membranes that modifies and packages proteins for export by the
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cell



Vesicle - correct answer Small membrane-bound sac that functions in moving products into, out of, and within a
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cell.



Ribosomes - correct answer site of protein synthesis
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- 70s in prokaryotic cells
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- 80s in eukaryotic cells
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, Mitochondrion - correct answer bean-shaped organelle that supplies energy (ATP) during the process of
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respiration , to the cell and has its own ribosomes and DNA.
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Centrioles - correct answer Cell organelle that aids in cell division in animal cells only
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Nucleus - correct answer the central and most important part of an object, movement, or group, forming the
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basis for its activity and growth. Contains DNA
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Nucleolus - correct answer Makes ribosomes
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Smooth Endoplasmic Reticulum - correct answer An endomembrane system where lipids are synthesized,
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calcium levels are regulated, and toxic substances are broken down.
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Rough Endoplasmic Reticulum - correct answer System of internal membranes within the cytoplasm.
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Membranes are rough due to the presence of ribosomes. functions in transport of substances such as proteins
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within the cytoplasm
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Lysosomes - correct answer An organelle containing digestive enzymes (lysozymes)
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cell wall - correct answer A rigid layer of nonliving material that surrounds the cells of plants and some other
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organisms.



Chloroplasts - correct answer Site of photosynthesis l l l l l l




Vacuole - correct answer Cell organelle that stores materials such as water, salts, proteins, and carbohydrates
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Amyloplast - correct answer starch storage l l l l l




Plasmodesmata - correct answer An open channel in the cell wall of plants through which strands of cytosol l l l l l l l l l l l l l l l l l l




connect from adjacent cells
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