Unit 1 Exam Review Study BIOL-2401
Questions with Actual Detailed
Answers 2025-2026.
Anatomy - Answer The study of body structure
Physiology - Answer The study of body function
Metabolism - Answer the combination of chemical reactions through which an organism
builds up or breaks down materials
Homeostasis - Answer the body's ability to maintain relatively stable internal conditions even
though the outside world is continuously changing
Describe the levels of organization from atoms to organisms/put in order - Answer
subatomic particles
atom
molecule
macromolecule
organelle
cell
tissue
organ
organ system
organism
Chracteristics of life - Answer Movement- an act of changing physical location or position
Responsiveness- Reaction to a change inside or outside the body
,Respiration- obtaining oxygen, removing carbon dioxide, and releasing energy from foods
Digestion- Breakdown of food substances into simpler forms that can be absorbed and used
Absorption- passage of substances through membranes and into body fluids
Circulation- movement of substances in body fluids
Assimilation- changing of absorbed substances into different chemical forms
Excretion- removal of metabolic waste.
Requirement of organisms - Answer WATER- for metabolic processes, as a medium for
metabolic reactions, to transport substances, and to regulate body temperature
FOOD- to supply energy and raw materials for the production of necessary substances and for
the regulation of vital reactions
OXYGEN- to help release energy from food substances
HEAT- to help regulate the rates of metabolic reactions
PRESSURE- atmospheric pressure for breathing; hydrostatic pressure to help circulate blood
Body Cavities - Answer Thoracic- heart, lungs, esophagus, great vessels, trachea, thymus
Abdominopelvic cavity contains....
Abdominal- stomach, spleen, liver, gallbladder, small intestine, most of large intestine
Pelvic- large intestines, urinary bladder, reproductive organs, rectum
, Parental pleura- lines the walls of the thoracic cavity
Pleural cavity- space between the folds of the pleura
Visceral pericardium- covers the surface of the heart
Paricardial cavity- serous membrane-lined cavity surrounding the heart
Parietal pericardium- outer layer of the pericardium
Fibrous pericardium- tough, white fibrous connective tissue that is the outer layer of the
pericardium
Function of Organ Systems - Answer
integumentary system - Answer protects tissues, regulate body temperature, support
sensory receptors
Skin, hair, nails, sweat glands, sebaceous glands
skeletal system - Answer Provides framework, protect soft tissues, provide attachments for
muscles, produce blood cells, store inorganic salts.
Bones, ligaments, cartilages
Muscular system function - Answer Cause movements, maintain posture, produce body heat
Muscles
nervous system - Answer Detect changes, receive and interpret sensory information,
stimulate muscles and glands
Questions with Actual Detailed
Answers 2025-2026.
Anatomy - Answer The study of body structure
Physiology - Answer The study of body function
Metabolism - Answer the combination of chemical reactions through which an organism
builds up or breaks down materials
Homeostasis - Answer the body's ability to maintain relatively stable internal conditions even
though the outside world is continuously changing
Describe the levels of organization from atoms to organisms/put in order - Answer
subatomic particles
atom
molecule
macromolecule
organelle
cell
tissue
organ
organ system
organism
Chracteristics of life - Answer Movement- an act of changing physical location or position
Responsiveness- Reaction to a change inside or outside the body
,Respiration- obtaining oxygen, removing carbon dioxide, and releasing energy from foods
Digestion- Breakdown of food substances into simpler forms that can be absorbed and used
Absorption- passage of substances through membranes and into body fluids
Circulation- movement of substances in body fluids
Assimilation- changing of absorbed substances into different chemical forms
Excretion- removal of metabolic waste.
Requirement of organisms - Answer WATER- for metabolic processes, as a medium for
metabolic reactions, to transport substances, and to regulate body temperature
FOOD- to supply energy and raw materials for the production of necessary substances and for
the regulation of vital reactions
OXYGEN- to help release energy from food substances
HEAT- to help regulate the rates of metabolic reactions
PRESSURE- atmospheric pressure for breathing; hydrostatic pressure to help circulate blood
Body Cavities - Answer Thoracic- heart, lungs, esophagus, great vessels, trachea, thymus
Abdominopelvic cavity contains....
Abdominal- stomach, spleen, liver, gallbladder, small intestine, most of large intestine
Pelvic- large intestines, urinary bladder, reproductive organs, rectum
, Parental pleura- lines the walls of the thoracic cavity
Pleural cavity- space between the folds of the pleura
Visceral pericardium- covers the surface of the heart
Paricardial cavity- serous membrane-lined cavity surrounding the heart
Parietal pericardium- outer layer of the pericardium
Fibrous pericardium- tough, white fibrous connective tissue that is the outer layer of the
pericardium
Function of Organ Systems - Answer
integumentary system - Answer protects tissues, regulate body temperature, support
sensory receptors
Skin, hair, nails, sweat glands, sebaceous glands
skeletal system - Answer Provides framework, protect soft tissues, provide attachments for
muscles, produce blood cells, store inorganic salts.
Bones, ligaments, cartilages
Muscular system function - Answer Cause movements, maintain posture, produce body heat
Muscles
nervous system - Answer Detect changes, receive and interpret sensory information,
stimulate muscles and glands
