BIOS-251 EXAMINATION TEST 2026 COMPLETE
QUESTIONS AND ANSWERS
◉ composite cell. Answer: cell membrane, nucleus, cytoplasm
◉ nucleus. Answer: houses genetic material and controls cell activity
◉ endoplasmic reticulum. Answer: participates in the synthesis of
protein and lipid molecules
-rough ER=covered with ribosomes
-smooth ER=no ribosomes
◉ ribosomes. Answer: provide enzymatic activity and structural support
for RNA during protein synthesis
◉ golgi apparatus. Answer: refines, packages, and transports proteins
◉ mitochondria. Answer: major sites of chemical reactions that release
energy from certain nutrient molecules
, ◉ lysosomes. Answer: certain enzymes that break down nutrient
molecules of foreign particles
◉ peroxisomes. Answer: house enzyme that catalyze a variety of
biochemical reactions
◉ microfilaments/microtubules. Answer: Slender tubes from the
cytoskeleton that provide movement for the cilia and flagella and are
part of certain structures that have specialized activities
◉ Centrosome. Answer: Composed of centrioles and microtubules.
Centrioles distribute chromosomes to newly formed cells during mitosis
◉ Cilia. Answer: Moves mucous and other fluids along the surface
◉ Flagella. Answer: Allow movement of sperm
◉ Vesicles. Answer: Membrane sac formed by pinching of pieces of cell
membrane that plays a role in secretion
◉ Nucleus. Answer: Spherical organelle that contains chromatin and
nucleous. It houses dna, which directs all cell activity
QUESTIONS AND ANSWERS
◉ composite cell. Answer: cell membrane, nucleus, cytoplasm
◉ nucleus. Answer: houses genetic material and controls cell activity
◉ endoplasmic reticulum. Answer: participates in the synthesis of
protein and lipid molecules
-rough ER=covered with ribosomes
-smooth ER=no ribosomes
◉ ribosomes. Answer: provide enzymatic activity and structural support
for RNA during protein synthesis
◉ golgi apparatus. Answer: refines, packages, and transports proteins
◉ mitochondria. Answer: major sites of chemical reactions that release
energy from certain nutrient molecules
, ◉ lysosomes. Answer: certain enzymes that break down nutrient
molecules of foreign particles
◉ peroxisomes. Answer: house enzyme that catalyze a variety of
biochemical reactions
◉ microfilaments/microtubules. Answer: Slender tubes from the
cytoskeleton that provide movement for the cilia and flagella and are
part of certain structures that have specialized activities
◉ Centrosome. Answer: Composed of centrioles and microtubules.
Centrioles distribute chromosomes to newly formed cells during mitosis
◉ Cilia. Answer: Moves mucous and other fluids along the surface
◉ Flagella. Answer: Allow movement of sperm
◉ Vesicles. Answer: Membrane sac formed by pinching of pieces of cell
membrane that plays a role in secretion
◉ Nucleus. Answer: Spherical organelle that contains chromatin and
nucleous. It houses dna, which directs all cell activity
