HESI A2 BIOLOGY CHAMBERLAIN
PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS GRADED A+
◍ What bone structures are in the ossicles (ears) ?.
Answer: malleus, incus, stapes
◍ ribosomes.
Answer: organelles read the RNA produced in the nucleus and translate the
genetic instructions to produce proteins -found attached to the endoplasmic
reticulum (bound ribosomes) and the cytoplasm (free ribosomes)
◍ Asexual reproduction.
Answer: 1. binary fission 2. mitosis
◍ electron transport chain.
Answer: 3rd step begins with the oxidation of the NADH molecules to
produce oxygen and finally to produce water -for every glucose molecule
28-32 ATP molecules can be produced
◍ hierarchy of a dog example.
Answer: kingdom: animaliaphylum: chordataclass: mammaliaorder:
carnivorafamily: canidaegenus: Canisspecies: lupus
◍ carbohydrates.
Answer: longs chains, or polymers of sugar -used for storage, structure, and
energy -the backbone of important molecules such as DNA and RNA
◍ Where is blood received in the heart?.
Answer: Blood is received in the atria
◍ What is the function of the upper passageways?.
Answer: Warm, filter, and moisten incoming air.
,◍ homozygous.
Answer: if both alleles are the same type
◍ What is the function of the nephrons?.
Answer: Filter material out of blood brought through the kidneys by the
renal artery.
◍ What are the components of the respiratory system?.
Answer: NosePharynxLarynx TracheaBronchilungsmuscles surrounding
ribs
◍ How do muscles make movement?.
Answer: Contraction in response to nervous stimulation.
◍ What is the function of Motor (efferent) neurons?.
Answer: Transmit nerve impulses away from the CNS toward the effector
organs such as muscles, glands, and digestive organs.
◍ In which renal structure does filtration actually occur?.
Answer: Bowman's capsule of the nephron.
◍ Nucleic Acids.
Answer: -components of the molecules of inheritance -DNA and RNA
◍ What is a tissue?.
Answer: A group of cells that act together to perform a specific function.
◍ eukaryote cells.
Answer: have a membrane inclosed nucleus and a series of membrane bound
organelles that carry out the functions of the cell as directed by the genetic
information contained in the nucleus(eukaryote: all living organisms except
eubacteria and archaebacteria)
◍ What is the function of calcium in muscle contraction?.
Answer: Attach to inhibitory proteins on the actin filaments of the muscle
cell, moving them aside.This forms cross bridges between actin and myosin
filaments.
, ◍ steps of the water cycle.
Answer: evaporationcondensationprecipitationrunoff/collectionpercolation
◍ What is the epidermis?.
Answer: The outermost protective layer of dead keratinized epithelial cells.
◍ What is the difference between reproductive activity between men and
women?.
Answer: Reproductive activity is cyclic in women, but continuous in men.
◍ What is the function of the respiratory system?.
Answer: Supply O2 and eliminate CO2
◍ specific heat.
Answer: the amount of heat necessary to raise the temperature of 1 gram of
that molecule 1 degree celsius
◍ What are the functions of the skeletal system?.
Answer: Support, movement, blood cell formation, protection of internal
organs, detoxification, muscle attachment, mineral storage. A MIME
BATHED SEALS SINGING "MY PONY"
◍ What occurs in the female ovarian follicles every month?.
Answer: FSH stimulates eggs to ripen within the follicle.
◍ saturated fats.
Answer: contain no double bonds in their hydrogen tail -solids at room temp
-lead to cardiovascular problems associated with diets
◍ What are the names of the veins parallel to the arteries?.
Answer: Carry the same name as the arteries
◍ What occurs during exhalation?.
Answer: The lungs recoil as the respiratory muscles relax and the thorax
decreases in size.
◍ Which white blood cells are active in phagocytosis?.
Answer: Neutrophils and monocytes
PRACTICE EXAMINATION 2026
QUESTIONS WITH ANSWERS GRADED A+
◍ What bone structures are in the ossicles (ears) ?.
Answer: malleus, incus, stapes
◍ ribosomes.
Answer: organelles read the RNA produced in the nucleus and translate the
genetic instructions to produce proteins -found attached to the endoplasmic
reticulum (bound ribosomes) and the cytoplasm (free ribosomes)
◍ Asexual reproduction.
Answer: 1. binary fission 2. mitosis
◍ electron transport chain.
Answer: 3rd step begins with the oxidation of the NADH molecules to
produce oxygen and finally to produce water -for every glucose molecule
28-32 ATP molecules can be produced
◍ hierarchy of a dog example.
Answer: kingdom: animaliaphylum: chordataclass: mammaliaorder:
carnivorafamily: canidaegenus: Canisspecies: lupus
◍ carbohydrates.
Answer: longs chains, or polymers of sugar -used for storage, structure, and
energy -the backbone of important molecules such as DNA and RNA
◍ Where is blood received in the heart?.
Answer: Blood is received in the atria
◍ What is the function of the upper passageways?.
Answer: Warm, filter, and moisten incoming air.
,◍ homozygous.
Answer: if both alleles are the same type
◍ What is the function of the nephrons?.
Answer: Filter material out of blood brought through the kidneys by the
renal artery.
◍ What are the components of the respiratory system?.
Answer: NosePharynxLarynx TracheaBronchilungsmuscles surrounding
ribs
◍ How do muscles make movement?.
Answer: Contraction in response to nervous stimulation.
◍ What is the function of Motor (efferent) neurons?.
Answer: Transmit nerve impulses away from the CNS toward the effector
organs such as muscles, glands, and digestive organs.
◍ In which renal structure does filtration actually occur?.
Answer: Bowman's capsule of the nephron.
◍ Nucleic Acids.
Answer: -components of the molecules of inheritance -DNA and RNA
◍ What is a tissue?.
Answer: A group of cells that act together to perform a specific function.
◍ eukaryote cells.
Answer: have a membrane inclosed nucleus and a series of membrane bound
organelles that carry out the functions of the cell as directed by the genetic
information contained in the nucleus(eukaryote: all living organisms except
eubacteria and archaebacteria)
◍ What is the function of calcium in muscle contraction?.
Answer: Attach to inhibitory proteins on the actin filaments of the muscle
cell, moving them aside.This forms cross bridges between actin and myosin
filaments.
, ◍ steps of the water cycle.
Answer: evaporationcondensationprecipitationrunoff/collectionpercolation
◍ What is the epidermis?.
Answer: The outermost protective layer of dead keratinized epithelial cells.
◍ What is the difference between reproductive activity between men and
women?.
Answer: Reproductive activity is cyclic in women, but continuous in men.
◍ What is the function of the respiratory system?.
Answer: Supply O2 and eliminate CO2
◍ specific heat.
Answer: the amount of heat necessary to raise the temperature of 1 gram of
that molecule 1 degree celsius
◍ What are the functions of the skeletal system?.
Answer: Support, movement, blood cell formation, protection of internal
organs, detoxification, muscle attachment, mineral storage. A MIME
BATHED SEALS SINGING "MY PONY"
◍ What occurs in the female ovarian follicles every month?.
Answer: FSH stimulates eggs to ripen within the follicle.
◍ saturated fats.
Answer: contain no double bonds in their hydrogen tail -solids at room temp
-lead to cardiovascular problems associated with diets
◍ What are the names of the veins parallel to the arteries?.
Answer: Carry the same name as the arteries
◍ What occurs during exhalation?.
Answer: The lungs recoil as the respiratory muscles relax and the thorax
decreases in size.
◍ Which white blood cells are active in phagocytosis?.
Answer: Neutrophils and monocytes
