Bio 392 Exam 1 Verified Questions And Answers With
Latest Solutions
Homeostasis is the ability of the body to
The active maintenance (a steady state) of chemical and physical variables at relatively stable levels by control
systems
Which of the following is normally considered the internal environment in physiology?
plasma
Which term is an important feature of homeostasis?
steady state
An integrating center
evaluates incoming signals and compares it with the setpoint.
Homeostatic adjustment of body temperature involves _____ in the skin sensing temperature. The information
about temperature is then send via ______ neurons to the hypothalamus in the brain.
thermoreceptors: sensory
Homeostatic adjustment of body temperature involves and output signal traveling via ______ neurons to
trigger a _______ in target tissue
efferent (motor): response
Which component of the control system important for thermoregulation harbors the set point for proper body
temperature?
,hypothalamus
In Physiology, the term Homeostasis refers to keeping some variable constantly at a set level.
not correct; it is usually maintained around a certain set point but it may still fluctuate a bit
Which is statement regarding negative feedback is correct?
the response counteracts the stimulus, shutting off the response loop
Which of the following substances is most alkaline?
urine, pH = 6
There are different forms of lipid. One of the most abundant ones are triglycerides. Triglycerides are made up
of
glycerol and three fatty acids
Transcribing a gene results in ______. Translation results in a _________
mRNA; polypeptide
An enzyme
catalyzes a reaction
, Covalent bonds
are very strong chemical bonds requiring a lot of energy input to break them apart
What component of amino acid structure varies among different amino acids?
the components of the R-group (side chain)
Most enzymes are
proteins encoded by genes
Molecules that are insoluble in water (such as greasy steroid hormones) are called ____
hydrophobic
Which of the following molecules can move across the phospholipid bilayer by simple diffusion?
water
lipids
steroids
lipids and water
All of the answers are correct.
Water will always move from ________ areas to ________ areas, if there are no impermeable barriers.
hyposmotic, hyperosmotic
The Na+/K+ pump actively pumps Na+ and K+ across the membrane. This is known as
primary active transport
Latest Solutions
Homeostasis is the ability of the body to
The active maintenance (a steady state) of chemical and physical variables at relatively stable levels by control
systems
Which of the following is normally considered the internal environment in physiology?
plasma
Which term is an important feature of homeostasis?
steady state
An integrating center
evaluates incoming signals and compares it with the setpoint.
Homeostatic adjustment of body temperature involves _____ in the skin sensing temperature. The information
about temperature is then send via ______ neurons to the hypothalamus in the brain.
thermoreceptors: sensory
Homeostatic adjustment of body temperature involves and output signal traveling via ______ neurons to
trigger a _______ in target tissue
efferent (motor): response
Which component of the control system important for thermoregulation harbors the set point for proper body
temperature?
,hypothalamus
In Physiology, the term Homeostasis refers to keeping some variable constantly at a set level.
not correct; it is usually maintained around a certain set point but it may still fluctuate a bit
Which is statement regarding negative feedback is correct?
the response counteracts the stimulus, shutting off the response loop
Which of the following substances is most alkaline?
urine, pH = 6
There are different forms of lipid. One of the most abundant ones are triglycerides. Triglycerides are made up
of
glycerol and three fatty acids
Transcribing a gene results in ______. Translation results in a _________
mRNA; polypeptide
An enzyme
catalyzes a reaction
, Covalent bonds
are very strong chemical bonds requiring a lot of energy input to break them apart
What component of amino acid structure varies among different amino acids?
the components of the R-group (side chain)
Most enzymes are
proteins encoded by genes
Molecules that are insoluble in water (such as greasy steroid hormones) are called ____
hydrophobic
Which of the following molecules can move across the phospholipid bilayer by simple diffusion?
water
lipids
steroids
lipids and water
All of the answers are correct.
Water will always move from ________ areas to ________ areas, if there are no impermeable barriers.
hyposmotic, hyperosmotic
The Na+/K+ pump actively pumps Na+ and K+ across the membrane. This is known as
primary active transport
