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WorksheetsQuiz 1
Total questions: 13
Worksheet time: 10mins
Name
Student ID
Campus
Shah Alam
Arau
Kuala Pilah
Jengka
Kota Kinabalu
The set point in a feedback loop is
the point at which the stimulus no longer is required.
the point at which the (effector) organ or gland starts to change the environment.
range of values for a parameter that the body tries to maintain.
the last step of a series of changes before the body is developed.
The portion of body water outside of cells that bathes most cells of the body is called ____________________.
intracellular fluid.
intercellular fluid.
interstitial fluid.
plasma.
Maintaining homeostasis relies on ______________.
short-term behavioral changes.
short-term physiological changes.
long term strategies.
all of the above.
The fluid compartment with a high sodium concentration that contains only trace amounts of protein is called ____________________.
interstitial fluid.
plasma.
intracellular fluid.
extracellular fluid.
The __________________ determines the extent of the error signal in a feedback loop, in order to initiate the appropriate response.
sensor
integrator
effector
set point
Direct communication between cells in contact with one another is accomplished through ______________.
ligands.
receptors.
gap junctions.
paracrine chemical messengers.
Which of the following statements is true?
Although hormones are carried to all parts of the body, they produce effects only in cells with proper receptors.
Hormones are limited to steroid compounds.
Hormones are secreted by specialized exocrine glands.
Most hormones are controlled by positive feedback mechanism involving the pituitary gland.
Peptide hormones
are received by a receptor located in the plasma membrane.
are received by a receptor located in the cytoplasm.
bring about the transcription of DNA.
slow effect on the target cell.
Which of the following describes ion channels that are coupled to membrane receptors such that their gating properties (opening and closing) are altered by messenger binding?
Enzyme-linked receptors.
G protein-linked channels.
Voltage-gated channels.
Ligand-gated channels.
Why do steroids take so long to generate change when they bind to intracellular receptors?
The intracellular receptors have very slow kinetics.
The bound receptors affect gene transcription rates.
The steroid receptor complex activates signal transduction pathways.
The steroid receptor complex must then exit the cell to exert its effects.
