BIOL 1201 : Exam 1 Example Questions

10 views5 pages

azuremammoth471

15 Mar 2019

School

Department

Course

Professor

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

Membrane is permeable to nacl but not to glucose. Side a -- . 4 m glucose and . 5 m nacl. Side b -- . 8 m glucose and . 4 m. Nacl: decrease in nacl and decrease in water level, during cellular respiration the oxygen consume is converted into, water, rank the following molecules from highest to lowest in terms of amount of energy they contain: Cytoplasm: during the electron transport chain, the energy to pump the h+ ions across the membrane comes directly from. The flow of electrons: in a respiring mitochondrion the lowest ph would be expected to be found in the: Mitochondrial membrane space: in a respiring mitochondrion, the lowest hydrogen concentration would be expected to be found in the: Mitochondrial matrix: which of the following reduced molecules is/are produced during the kreb"s cycle (be sure you think ab reduced molecules versus one that are phosphorylated)

Related Questions

Question 1

Plasma membranes are selectively permeable. This means that

	A.	glucose cannot enter the cell.
	B.	the plasma membrane allows some substances to enter or leave a cell more easily than others.
	C.	plasma membranes must be very thick.

Question 2

Oxygen molecules O₂ crosse a plasma membrane by

	A.	passive transport
	B.	osmosis
	C.	active transport

Question 3

Facilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient.

		A. energy and channel proteins; against (up)
		B. transport proteins that make channels ; down
		C. energy ; down

Question 4

When two aqueous solutions that differ in solute concentration are placed on either side of a semipermeable membrane and osmosis is allowed to take place, the water will

		A. move to the side with lower water concentration
	B.	move to the side with higher water concentration
	C.	move to the side with lower solute concentration

Question 5

Kinetic energy differs from chemical energy in that

	A.	chemical energy is a particular form of kinetic energy.
	B.	kinetic energy is the energy of a moving object, whereas chemical energy is the potential energy of molecules.
	C.	kinetic energy is stored energy that has the potential to do work, and chemical energy is the energy of movement.

Question 6

When a cell uses chemical energy to perform work, it uses the energy released from a(n) ________ reaction to drive a(n) ________ reaction.

	A.	exergonic; endergonic
	B.	endergonic; exergonic
	C.	spontaneous; exergonic

Question 7

When an enzyme catalyzes a reaction

		A. it raises the activation energy of the reaction.
		B. it lowers the activation energy of the reaction.
		C. it is used once and discarded.

Question 8

Which of the following statements regarding enzyme function is false?

		A. An enzyme's function depends on its three-dimensional shape.
		B. Enzymes are very specific for their substrates.
		C. Enzymes are used up when they catalyze a chemical reaction so must be synthesized for each new chemical reaction

Question 1 When energy changes from one form to another, some of the energy that can be used to do work is always lost. The loss of this energy is mostly in the form of _________.
a. heat
b. potential energy
c. kinetic energy
d. light energy
e. mechanical energy

Question 2 Which of the following is exergonic?
a. binding fatty acids and glycerol molecules together to form lipids
b. building proteins from amino acids
c. binding sugars molecules together to form glycogen
d. breaking bonds in starch to release glucose
e. adding a phosphate group to ADP to form ATP

Question 3 The first law of thermodynamics states that:
a. energy can neither be created nor destroyed.
b. the universe is increasing in entropy.
c. all living organisms must eat to derive energy.
d. energy is required to bring molecules into a cell against a concentration gradient.
e. in energy-yielding reactions, matter goes from a more-ordered to a less-ordered state.

Question 4 Which of the following is true of energy?
a. It can be transferred from one form to another with 100 percent efficiency.
b. It can be created.
c. It can be stored in chemical bonds.
d. It can never be stored.
e. It can be released by forming chemical bonds.

Question 5 Metabolism is:
a. the sum of all the energy a cell uses.
b. the sum of all the vitamins a cell contains.
c. the sum of all the enzymes a cell contains.
d. the sum of all the chemical reactions that an organism carries out.
e. the sum of all the ATP a cell contains.

Question 6 Entropy is the measure of ________ in a system.
a. disorder
b. order
c. energy
d. work
e. heat

Question 7 What percentage of the energy stored in glucose are humans cells able to use to do useful work?
a. 37%
b. 100%
c. 15%
d. 52%
e. 48%

Question 8 What is activation energy?
a. the energy gained by living things, allowing them to remain active
b. the energy produced by the breakdown of ATP to ADP.
c. the energy required to initiate or begin a chemical reaction
d. the energy created by enzymes during exergonic reactions
e. the energy lost by living things in the form of heat

Question 9 Which of the following is true of allosteric enzymes?
a. Their activity can be reduced when the product binds the enzyme.
b. Their activity can be reduced when a coenzyme binds to them.
c. Their activity can be reduced when the substrate binds the enzyme.
d. Their activity can be increased when the product binds the enzyme.

Question 10 Which of the following is a true statement about enzymes?
a. They are made of proteins.
b. They are altered by the reactions they catalyze.
c. They increase the energy of activation of chemical reactions.
d. All of the above are true.
e. None of the above is true.

Question 11 What is the energy currency of cells?
a. ADP
b. enzymes
c. glucose
d. vitamins
e. ATP

Question 12 Kinetic energy is ____________, while potential energy is _____________.
a. stored energy; energy that is being used
b. stored energy; energy that can't be used
c. energy that is being used; stored energy
d. energy that can't be used; stored energy

Question 13 The energy released during ________ reactions can be used to drive ________ reactions, and this is called ________ reactions.
a. exergonic; endergonic; coupled
b. endergonic; exergonic; coupled
c. exergonic; endergonic; mutually dependent
d. coupled; mutually dependent; independent
e. endergonic; exergonic; mutually dependent

Question 14 ADP + P + Energy --> ATP Which of the following is a true statement about the chemical reaction above?
a. This is a coupled reaction.
b. This is an exergonic reaction.
c. The product of the reaction contains more energy than that of all of the reactants combined.
d. This is an endergonic reaction.
e. This is an example of a catabolic reaction.

greychimpanzee211

2. Please answer with a True or False for the following:

a. The catalase enzyme is found in all obligate aerobes and facultatuve anaerobes to deal eith H2O2

b. An exergonic reaction requires energy input and must be coupledwith ATP hydrolysis in order to proceed

c. The TCA cycle must "turn twice" in order to complete the oxidation of one glucose molecule.

d. Allosteric regulation occurs when an enzyme has a site that can bind an effector molecule seperate from the active site.

e. Some bacteria use desulfurases to produce hydrogen sulfide from he breakdown of some amino acids.

f. A 1/10 dilution can be made by adding 1 mL sample to 10mL diluent

3. You obtain the following results after incubation of a bacterial starin in tge indicated carbohydrate fermemtation sugar media:

Sugar: Color of Medium Durham tube results

Glucose Yellow No bubble

Maltose Red Bubble

Mannitol Yellow No bubble

Lactose Yellow Bubble

Sucrose Red No Bubble

Which sugars cannot be fermented by this bacterial strain?

a. glucose and mannitol

b. maltose and lactose

c. lactose

d. maltose and sucrose

e. none of the choices are correct

raspberrykoala332

BIOL 1201 : Exam 1 Example Questions

Document Summary

Get access

Related Documents

BIOL 1201 : BIOS Exam 2 A And J

BIOL 1201 : Exam Questions

BIOL 1201 Lecture Notes - Lecture 2: Acetyl-Coa, Oxidative Phosphorylation, Facilitated Diffusion

Related Questions