BIO 256 UPDATED SCRIPTED EXAM QUESTIONS AND
SOLUTIONS RATED A+
✔✔A good example of a positive feedback mechanisms would be - ✔✔enhancement of
labor contractions by oxytocin
✔✔Which is made using the energy in food molecules and used to fuel work - ✔✔ATP
✔✔A coenzyme may be made from - ✔✔riboflavin (vitamin B2)
✔✔Movement of ions through protein channels is - ✔✔facilitated diffusion
✔✔Cells moving substances into vesicles in the cytoplasm is called - ✔✔endocytosis
✔✔Which allow cells to pump solutes from an area of lower concentration to an area of
higher concentration - ✔✔active transport
✔✔Which of the following statements is correct regarding diffusion - ✔✔the greater the
concentration of gradient, the faster the rate of diffusion
✔✔RNA is made by--- protein is made by-- - ✔✔transcription, translation
✔✔To obtain energy from proteins, first proteins are broken into their unit molecules.
Then, the unit molecules must be - ✔✔deaminated
✔✔In glycolysis, - ✔✔two molecules of pyruvate are formed
✔✔Choose the statement that is most correct about measuring membrane potential -
✔✔Voltage is measured by placing one electrode inside the membrane and another
outside the membrane
✔✔There are three layers of neurons in the retina. The axons of which of these neuron
layers form the optic nerves - ✔✔ganglion cells
✔✔The second messenger used for detecting the presence of an odorant molecule is -
✔✔cAMP
✔✔What is the main function of the rods in the eye - ✔✔vision in dim light
✔✔Lactotroph cells in the pituitary produce a hormone that controls mammary gland
milk synthesis. This hormone is called - ✔✔prolactin
, ✔✔In a strict sense, the posterior pituitary is not an endocrine gland because it -
✔✔does not make hormones
✔✔Which is not a tropic hormone - ✔✔estrogen
✔✔The neurotransmitter used at a motor end plate is - ✔✔acetylocholine
✔✔Platelets - ✔✔stick to the damaged area of a blood vessel and help seal the break
✔✔Which blood cell type is really just a fragment of the cytoplasm of a bone marrow
megakaryocyte, surrounded by plasma membrane? It functions in the cellular
component of hemostasis - ✔✔platelets
✔✔Which blood cells make antibodies - ✔✔B-lymphocytes
✔✔Which lists the components of the hearts conduction system in the proper order -
✔✔SA node, AV node, AV bundle, bundle branches, conduction myofibers
✔✔Where in the body would you find low oxygen levels causing vasoconstriction and
high level causing vasodilation - ✔✔lungs
✔✔Intense exercise can cause - ✔✔both of the above
✔✔A vaccination will stimulate the production of - ✔✔immune memory and antibodies
✔✔Which involves the cellular immunity - ✔✔cytotoxic T cells destroy viral-infected cells
✔✔Another term for antibodies would be - ✔✔immunoglobins
✔✔Which is the primary stimulus for a newborns first inspiration - ✔✔increased CO2 in
the blood detected by the medulla
✔✔What causes hemoglobin to release oxygen to a body tissues - ✔✔decreased tissue
pH due to carbon dioxide production
✔✔Respiratory control centers are located in the - ✔✔medulla and pons
✔✔Which is a site of reabsorption but not secretion - ✔✔loop of Henle
✔✔Which would be normal constituent of urine - ✔✔sodium ions
✔✔Which part of the kidney is hypertonic, aiding in water reabsorption - ✔✔medulla
SOLUTIONS RATED A+
✔✔A good example of a positive feedback mechanisms would be - ✔✔enhancement of
labor contractions by oxytocin
✔✔Which is made using the energy in food molecules and used to fuel work - ✔✔ATP
✔✔A coenzyme may be made from - ✔✔riboflavin (vitamin B2)
✔✔Movement of ions through protein channels is - ✔✔facilitated diffusion
✔✔Cells moving substances into vesicles in the cytoplasm is called - ✔✔endocytosis
✔✔Which allow cells to pump solutes from an area of lower concentration to an area of
higher concentration - ✔✔active transport
✔✔Which of the following statements is correct regarding diffusion - ✔✔the greater the
concentration of gradient, the faster the rate of diffusion
✔✔RNA is made by--- protein is made by-- - ✔✔transcription, translation
✔✔To obtain energy from proteins, first proteins are broken into their unit molecules.
Then, the unit molecules must be - ✔✔deaminated
✔✔In glycolysis, - ✔✔two molecules of pyruvate are formed
✔✔Choose the statement that is most correct about measuring membrane potential -
✔✔Voltage is measured by placing one electrode inside the membrane and another
outside the membrane
✔✔There are three layers of neurons in the retina. The axons of which of these neuron
layers form the optic nerves - ✔✔ganglion cells
✔✔The second messenger used for detecting the presence of an odorant molecule is -
✔✔cAMP
✔✔What is the main function of the rods in the eye - ✔✔vision in dim light
✔✔Lactotroph cells in the pituitary produce a hormone that controls mammary gland
milk synthesis. This hormone is called - ✔✔prolactin
, ✔✔In a strict sense, the posterior pituitary is not an endocrine gland because it -
✔✔does not make hormones
✔✔Which is not a tropic hormone - ✔✔estrogen
✔✔The neurotransmitter used at a motor end plate is - ✔✔acetylocholine
✔✔Platelets - ✔✔stick to the damaged area of a blood vessel and help seal the break
✔✔Which blood cell type is really just a fragment of the cytoplasm of a bone marrow
megakaryocyte, surrounded by plasma membrane? It functions in the cellular
component of hemostasis - ✔✔platelets
✔✔Which blood cells make antibodies - ✔✔B-lymphocytes
✔✔Which lists the components of the hearts conduction system in the proper order -
✔✔SA node, AV node, AV bundle, bundle branches, conduction myofibers
✔✔Where in the body would you find low oxygen levels causing vasoconstriction and
high level causing vasodilation - ✔✔lungs
✔✔Intense exercise can cause - ✔✔both of the above
✔✔A vaccination will stimulate the production of - ✔✔immune memory and antibodies
✔✔Which involves the cellular immunity - ✔✔cytotoxic T cells destroy viral-infected cells
✔✔Another term for antibodies would be - ✔✔immunoglobins
✔✔Which is the primary stimulus for a newborns first inspiration - ✔✔increased CO2 in
the blood detected by the medulla
✔✔What causes hemoglobin to release oxygen to a body tissues - ✔✔decreased tissue
pH due to carbon dioxide production
✔✔Respiratory control centers are located in the - ✔✔medulla and pons
✔✔Which is a site of reabsorption but not secretion - ✔✔loop of Henle
✔✔Which would be normal constituent of urine - ✔✔sodium ions
✔✔Which part of the kidney is hypertonic, aiding in water reabsorption - ✔✔medulla
