2024 – 2026 RATED A+
Which of the following illustrates a negative feedback mechanism that occurs in
the human body?
a)the release of insulin from the pancreas in response to an increase in blood
sugar levels
b)the release of glucagon from the pancreas in response to an increase in blood-
sugar levels
c) the release of oxytocin resulting in uterine contractions as childbirth is
underway
d)chemical reactions that result in coagulation due to fibrin being released -
answera) the release of insulin from the pancreas in response to an increase in
blood - sugar levels
Pancreatic cells have an abundance of _______ to meet the protein production
demands of the cell a) nuclei
b)mitochondria
c)lysosomes
d) rough endoplasmic reticulum - answerd) rough endoplasmic
reticulum Nails are made of a protein called ____
a) collagen
b)vinculin
c)keratin
d) elastin - answerc) keratin
Anxiety about an upcoming final exam causes a student to experience an increase
in blood pressure, dilation of the pupils, and a dry mouth. Which of the following
nervous system responses is responsible for these physical symptoms?
A. Voluntary
B. Sympathetic
C. Limbic
D. Cognitive - answerb) sympathetic
,Which of the following results from the release of the neurotransmitter dopamine
into the nerve synapse?
a) the presynaptic neuron fires an action potential
b)Dopamine binds to receptor proteins on the membrane of the postsynaptic cell
c)Dopamine enters the cytoplasm of the postsynaptic cell
d) dopamine cause the postsynaptic nerve cell to contract - answerb) dopamine
binds to receptor proteins on the membrane of the postsynaptic cell
Which of the following describes the function of the ribosome in a living cell?
a) production of ATP molecules from energy in nutrient molecules
b)Disposal and recycling of damaged or unneeded cell parts
c) Use of genetic information to build specific protein molecules
d)regulation of molecules entering and leaving the cell - answerc) use of genetic
information to build specific protein molecules
if an intensive property in independent of the amount of the material being
measured, which of the following is an example of intensive property?
a)Length
b)mass
c)volume
d) density - answerc) Density
Which of the following statements correctly matches a body system with its
function?
a) the digestive system facilitates absorption of substances into the bloodstream
b)the respiratory system transports oxygenated blood throughout the lungs and
body
c) The excitatory system prevents harmful substances from entering the body
d)The endocrine system transports hormones from place to place within the body -
answera) the digestive system facilitates absorption of substance into the blood
stream 235
U . ---> . X + 4HE
92 . 2
which of the following is "x" in the reaction above?
,a) 239 Pu
94
b)231 Pu
94
c) 231 Th
90 - answerc) 231 Th
90
What is the role of the urethra?
a) to transport urine out of the body
b)to transport the egg to the uterus
c) to connect the kidneys to the bladder
d)to connect the uterus to the outside of the body - answera) to transport urine out
of the body
Which of the following is the form of energy contained in nutrient molecules and
in ATP's high-energy bonds?
a) mechanical energy
b)potential energy
c)kinetic energy
d)radiation energy - answerb) potential energy
A researcher decides to repeat an experiment and reassess results first established
in the 1930's about why plants grow toward light. Which of the following is the
best reason for conduction this experiment?
a)plant behavior could have modified due to evolutionary processes since the
experiments were first done
b)new breeds of plants discovered since the 1930's have not yet been shown to
have to same light responses
c)shifts in average temperatures produced by global warming may affect plants in
ways that are not yet understood
d)equipment and methods developed since the 1930's may produce better data and
provide mechanistic detail. - answerd) equipment and methods developed since the
1930's may produce better developed data and provide mechanistic detail
, Which of the following glands produces melatonin, the hormones that
regulates sleep? a) thyroid
b)hypothalamus
c)pituitary
d) pineal - answerd) pineal
Which of the following explains why damage to the spleen reduces the production
of granulocytes?
a)damage to the spleen reduces the production of granulocytes
b)damage to the spleen causes massive blood loss
c) damage to the spleen results in loss of clotting ability
d)damage to the spleen results in decreased red blood cell production and
maturation - answerb) damage to the spleen causes massive blood loss
When an enzyme is degraded into its monomeric structural units, the monomers
will be a)monosaccharides
b)fatty acids
c)nucleotides
d)amino acids - answerd) amino acids
Which of the following enzymes breaks down complex
carbohydrates? a) amylase
b) pepsin
c)lactase
d)lipase - answera) amylase
Which of the following is the purpose of using a control groups in an investigation?
a) to establish a standard for data comparison
b)to provide the correct answer to an investigation
c) to determine the dependent variables
d)to function as a third variable group - answera) to establish a standard for data
comparison
Which of the following contains the testes?
a) epididymis