BIOS 255 OA FINAL EXAM (LATEST 2025/2026) | COMPLETE ACTUAL
EXAM | QUESTIONS & 100% VERIFIED CORRECT ANSWERS |
OBJECTIVE ASSESSMENT | PRE ASSESSMENT INCLUDED |
GUARANTEED A+ | BRAND NEW UPDATE!
Isomers -ANSWER Compounds with the same molecular formula but different structural
arrangements.
Catabolism -ANSWER Breaking polymers into monomers; releases energy.
Anabolism -ANSWER Building monomers into polymers; requires energy.
Osmosis -ANSWER Movement of water across a selectively permeable membrane.
Facilitated diffusion -ANSWER Passive transport that uses membrane transport proteins
and does not require ATP.
Active transport -ANSWER Movement of substances against a concentration gradient using
ATP.
Hypertonic solution -ANSWER A solution that causes a cell to lose water and shrink.
Hypotonic solution -ANSWER A solution that causes a cell to gain water and swell.
, Isotonic solution -ANSWER A solution with no net water movement into or out of the cell.
Epithelial tissue -ANSWER Avascular tissue that covers surfaces, lines cavities, and forms
glands.
Polarity of epithelium -ANSWER Epithelial tissue has an apical surface and a basal surface.
Connective tissue fibers -ANSWER The three major fibers are collagen, elastic, and reticular
fibers.
Chondroitin sulfate -ANSWER A component of cartilage matrix/ground substance.
Stratum basale -ANSWER The deepest layer of the epidermis.
Stratum corneum -ANSWER The most superficial layer of the epidermis.
Merocrine glands -ANSWER Sweat glands that produce watery sweat for thermoregulation.
Sebaceous glands -ANSWER Glands that secrete sebum to lubricate skin and hair.
Apocrine glands -ANSWER Glands found mainly in axillary and anogenital regions that
produce a thicker secretion.
Osteoblasts -ANSWER Bone-forming cells.
, Osteoclasts -ANSWER Bone-resorbing cells.
Osteocytes -ANSWER Mature bone cells that maintain bone tissue.
Diaphysis -ANSWER The shaft of a long bone.
Epiphysis -ANSWER The end of a long bone.
Metaphysis -ANSWER The region between the diaphysis and epiphysis; contains the growth
plate in growing bones.
Axial skeleton -ANSWER Skull, vertebral column, and thoracic cage.
Appendicular skeleton -ANSWER Limbs and the pectoral and pelvic girdles.
Synovial joint -ANSWER A freely movable joint with a joint cavity and articular cartilage.
Sarcomere -ANSWER The functional contractile unit of skeletal muscle.
Epimysium -ANSWER Connective tissue surrounding the entire muscle.
Perimysium -ANSWER Connective tissue surrounding a fascicle.
Endomysium -ANSWER Connective tissue surrounding an individual muscle fiber.
, Neuromuscular junction -ANSWER The synapse between a motor neuron and a muscle
fiber.
ACh at NMJ -ANSWER Acetylcholine is the neurotransmitter released at the neuromuscular
junction.
Troponin -ANSWER The protein that binds calcium during muscle contraction.
Tropomyosin -ANSWER A regulatory protein that blocks myosin-binding sites on actin when
the muscle is relaxed.
Sliding filament theory -ANSWER The mechanism of contraction in which actin filaments
slide past myosin filaments to shorten the sarcomere.
Twitch -ANSWER A brief contraction of muscle fibers in response to one action potential.
Incomplete tetanus -ANSWER Repeated stimulation with partial relaxation between
contractions.
Complete tetanus -ANSWER Sustained contraction with no relaxation between stimuli.
Concentric contraction -ANSWER A contraction in which the muscle shortens while
producing force.
EXAM | QUESTIONS & 100% VERIFIED CORRECT ANSWERS |
OBJECTIVE ASSESSMENT | PRE ASSESSMENT INCLUDED |
GUARANTEED A+ | BRAND NEW UPDATE!
Isomers -ANSWER Compounds with the same molecular formula but different structural
arrangements.
Catabolism -ANSWER Breaking polymers into monomers; releases energy.
Anabolism -ANSWER Building monomers into polymers; requires energy.
Osmosis -ANSWER Movement of water across a selectively permeable membrane.
Facilitated diffusion -ANSWER Passive transport that uses membrane transport proteins
and does not require ATP.
Active transport -ANSWER Movement of substances against a concentration gradient using
ATP.
Hypertonic solution -ANSWER A solution that causes a cell to lose water and shrink.
Hypotonic solution -ANSWER A solution that causes a cell to gain water and swell.
, Isotonic solution -ANSWER A solution with no net water movement into or out of the cell.
Epithelial tissue -ANSWER Avascular tissue that covers surfaces, lines cavities, and forms
glands.
Polarity of epithelium -ANSWER Epithelial tissue has an apical surface and a basal surface.
Connective tissue fibers -ANSWER The three major fibers are collagen, elastic, and reticular
fibers.
Chondroitin sulfate -ANSWER A component of cartilage matrix/ground substance.
Stratum basale -ANSWER The deepest layer of the epidermis.
Stratum corneum -ANSWER The most superficial layer of the epidermis.
Merocrine glands -ANSWER Sweat glands that produce watery sweat for thermoregulation.
Sebaceous glands -ANSWER Glands that secrete sebum to lubricate skin and hair.
Apocrine glands -ANSWER Glands found mainly in axillary and anogenital regions that
produce a thicker secretion.
Osteoblasts -ANSWER Bone-forming cells.
, Osteoclasts -ANSWER Bone-resorbing cells.
Osteocytes -ANSWER Mature bone cells that maintain bone tissue.
Diaphysis -ANSWER The shaft of a long bone.
Epiphysis -ANSWER The end of a long bone.
Metaphysis -ANSWER The region between the diaphysis and epiphysis; contains the growth
plate in growing bones.
Axial skeleton -ANSWER Skull, vertebral column, and thoracic cage.
Appendicular skeleton -ANSWER Limbs and the pectoral and pelvic girdles.
Synovial joint -ANSWER A freely movable joint with a joint cavity and articular cartilage.
Sarcomere -ANSWER The functional contractile unit of skeletal muscle.
Epimysium -ANSWER Connective tissue surrounding the entire muscle.
Perimysium -ANSWER Connective tissue surrounding a fascicle.
Endomysium -ANSWER Connective tissue surrounding an individual muscle fiber.
, Neuromuscular junction -ANSWER The synapse between a motor neuron and a muscle
fiber.
ACh at NMJ -ANSWER Acetylcholine is the neurotransmitter released at the neuromuscular
junction.
Troponin -ANSWER The protein that binds calcium during muscle contraction.
Tropomyosin -ANSWER A regulatory protein that blocks myosin-binding sites on actin when
the muscle is relaxed.
Sliding filament theory -ANSWER The mechanism of contraction in which actin filaments
slide past myosin filaments to shorten the sarcomere.
Twitch -ANSWER A brief contraction of muscle fibers in response to one action potential.
Incomplete tetanus -ANSWER Repeated stimulation with partial relaxation between
contractions.
Complete tetanus -ANSWER Sustained contraction with no relaxation between stimuli.
Concentric contraction -ANSWER A contraction in which the muscle shortens while
producing force.
