PHYS 261 MIDTERM EXAM
COMPREHENSIVE SCRIPT TESTED
QUESTIONS WITH FULLY ANSWERED
SOLUTIONS GRADED A+
⩥ Electrons travel around the center of the atom at high speed in
structures called.
Answer: Orbits
⩥ The center of atom is called the.
Answer: Nucleus
⩥ During intense exercise our muscles produce lactate and hydrogen
ions which decrease the pH. Which molecules would be affected by the
accumulation of hydrogen ions?.
Answer: Proteins Actin/Myosin
⩥ A(n) _________________ is any molecule or ion that binds to a
protein channel and opens it up allowing ions to flow in or out of the
cell..
Answer:
⩥ Ions with a negative charge are called.
,Answer: electrons
⩥ DNA contains the five-carbon sugar.
Answer: deoxyribose
⩥ Triglycerides and steroids are examples of.
Answer: lipids
⩥ A covalent bond is formed when atoms.
Answer: share one or more electrons
⩥ The first molecule used to produce ATP is.
Answer:
⩥ A new chemotherapy drug enters a cell via forming vesicles. Once in,
it works by degrading an organic molecule which consists of head and
tail. Which of the following type of organic molecule did thee drug
target?.
Answer:
⩥ Thee speed of chemical reactions that occur in the body are controlled
by molecules called.
Answer: Enzymes
, ⩥ Trypsin is an active protein which needed for protein digestion.
Trypsin has to be activated since our body produces it in its inactive
form. Which of the following is the inactive form of Trypsin?.
Answer: Trysinogen
⩥ Chemical reactions that occur in the human body proceed at a faster
rate due to special catalytic molecules called.
Answer: Enzymes
⩥ RNA contains the five carbon sugar.
Answer: Ribose
⩥ In the equation Co2 + H2O + H2CO3 <-> H+ + HCO3, which of
these is an acid?.
Answer: H2CO3
⩥ The activity of an enzyme is changed by factors such as feedback
inhibition; this factor is referred to as a.
Answer: end product inhibition
⩥ The binding sites of enzymes are.
Answer: active sites
COMPREHENSIVE SCRIPT TESTED
QUESTIONS WITH FULLY ANSWERED
SOLUTIONS GRADED A+
⩥ Electrons travel around the center of the atom at high speed in
structures called.
Answer: Orbits
⩥ The center of atom is called the.
Answer: Nucleus
⩥ During intense exercise our muscles produce lactate and hydrogen
ions which decrease the pH. Which molecules would be affected by the
accumulation of hydrogen ions?.
Answer: Proteins Actin/Myosin
⩥ A(n) _________________ is any molecule or ion that binds to a
protein channel and opens it up allowing ions to flow in or out of the
cell..
Answer:
⩥ Ions with a negative charge are called.
,Answer: electrons
⩥ DNA contains the five-carbon sugar.
Answer: deoxyribose
⩥ Triglycerides and steroids are examples of.
Answer: lipids
⩥ A covalent bond is formed when atoms.
Answer: share one or more electrons
⩥ The first molecule used to produce ATP is.
Answer:
⩥ A new chemotherapy drug enters a cell via forming vesicles. Once in,
it works by degrading an organic molecule which consists of head and
tail. Which of the following type of organic molecule did thee drug
target?.
Answer:
⩥ Thee speed of chemical reactions that occur in the body are controlled
by molecules called.
Answer: Enzymes
, ⩥ Trypsin is an active protein which needed for protein digestion.
Trypsin has to be activated since our body produces it in its inactive
form. Which of the following is the inactive form of Trypsin?.
Answer: Trysinogen
⩥ Chemical reactions that occur in the human body proceed at a faster
rate due to special catalytic molecules called.
Answer: Enzymes
⩥ RNA contains the five carbon sugar.
Answer: Ribose
⩥ In the equation Co2 + H2O + H2CO3 <-> H+ + HCO3, which of
these is an acid?.
Answer: H2CO3
⩥ The activity of an enzyme is changed by factors such as feedback
inhibition; this factor is referred to as a.
Answer: end product inhibition
⩥ The binding sites of enzymes are.
Answer: active sites
