BIO325H5 Lecture : Feb. 1 Lecture Notes

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6 Feb 2011

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The rate at which it provides energy from storage. Energy can be stored longer and be released quicker than muscles. The jump from resilin is more powerful (higher rate) 1 flea jumped 600x and hour and another 1000x an hour. Unfed makes it need to jump for food. Rate is measured by the sound of the jumo. The fleas muscles are all based on the axis of dicondylic joints of the trochanter. Levator of the trochanter mucscle that pulls the trochanter. Antagonistc to the tendon (depressor of the trochanter) If they both contract at the same time, no movement of the limb is possible. The trochanter is pulled against the coxa which is also pulled against the under body against the plural arch (resilin is in there) creating energy by cocking its legs back, and the latch (catch) is engaged. With the legs cocked the levator muscle can relax while its cocked.

Related Questions

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

11. Which of the following is an attribute of a scientifically literate person?

A. Creates templates for understanding

B. Constructs hypothetical arguments for discussion

C. Respects the rights of self determination

D. Uses scientific evidence to understand the natural world

E. Reports on social phenomena consistently

12. Which of the following does not contribute to the Calorie intake of a person?

A. Protein

B. Carbohydrate

C. Fat

D. Alcohol

E. Water

13. Which of the following is not a technique used to measure body composition?

A. Skin-fold calipers

B. Bod PodÃ

C. Body mass index

D. Hydrostatic weighing

E. Light absorption technique

14. Which of the following behavioral techniques supports healthy body weight changes?

A. Feasting

B. Fasting

C. Goal setting and a plan

D. Eating vegetables and meat

E. Regularly measuring body composition

15. The purpose of the warm-up is to:

A. Slowly increase the pulse rate to an aerobic level.

B. Facilitate vascular changes (splenic shunt) to accommodate aerobic exercise.

C. Gear up the energy metabolism, i.e., increase the delivery of oxygen and nutrients to the working muscle, and raise the temperature to an optimal level for energy production.

D. Increase the elasticity of the muscle fibers, which helps to prevent muscle, tendon, ligament, and joint injuries, as well as improve muscle contraction and preserve muscle glycogen in addition to reducing the amount of lactic acid build-up in the muscles.

E. All of the above

16. Which of the following reflects an improvement in cardiovascular health resulting from regular engagement in aerobic exercise?

A. Increased lean body mass

B. Increase in high-density lipoprotein cholesterol (HDL)

C. Stress relief

D. Improvement in sleep pattern

E. Reduced risk for developing certain types of cancer

17. The purpose of a cool-down is to:

A. slowly decrease pulse rate.

B. decrease core body temperature.

C. slowly constrict blood vessels.

D. continue adequate supply of blood to the brain, and facilitate removal of metabolic waste products from the muscles.

E. All of the above

18. A person trying to gain lean body mass has:

A. increased fluid needs.

B. decreased fat needs.

C. altered fitness needs.

D. increased protein and strength training needs.

E. decreased electrolyte needs.

19. Vitamin A in the form of _____ is used to treat acne.

A. retinol

B. retinal

C. retinoic acid

D. beta-carotene

E. lycopene

20. Which of the following is a genetic disease for which a low intake of copper is a component of treatment?

A. Pellagra

B. Wilsonâs disease

C. Hemochromatosis

D. Beriberi

E. Goiter

21. Which of the following nutrients is used to treat scurvy?

A. Folate

B. Riboflavin

C. Vitamin C

D. Niacin

E. Vitamin D

22. Which of the following groups is at highest risk for hemolytic anemia?

A. Premature infants

B. Elderly people who do not get exposure to sunlight

C. Pregnant women

D. Teenagers who do not drink enough water

E. Someone who does not consume animal meat or products

23. Iron deficiency causes:

A. microcytic normochromic anemia.

B. macrocytic hypochromic anemia.

C. microcytic hypochromic anemia.

D. macrocytic normochromic anemia.

E. macrocytic hyperchromic anemia.

24. Acrodermatitis enteropathica is caused by a deficiency of:

A. iron.

B. zinc.

C. chromium.

D. choline.

E. molybdenum.

25. Which of the following is required for the absorption of vitamin B₁₂?

A. A coenzyme

B. Intrinsic factor

C. Vitamin C

D. Bile acids

E. None of the above

26. Which nutrient potentiates the action of insulin?

A. Magnesium

B. Fluoride

C. Chromium

D. Selenium

E. Iodine

27. Which mineral is a central component of vitamin B₁₂?

A. Iron

B. Copper

C. Cobalt

D. Zinc

E. Molybdenum

28. Iodine is a component of:

A. hemoglobin.

B. myoglobin.

C. intrinsic factor.

D. insulin.

E. thyroxine.

29. Which of the following statements is not true regarding the diagnosis of a nutritional deficiency?

A. Dietary records should demonstrate low intake for that nutrient.

B. Blood levels should demonstrate high body levels of the nutrient.

C. Tissue levels should demonstrate low body levels of the nutrient.

D. Nutrient supplementation should correct the deficiency symptoms.

E. Clinical deficiency symptoms should be compatible with a low dietary intake.

30. Vitamin C helps maintain tissue integrity by:

A. neutralizing foreign proteins.

B. creating an alkaline cell environment.

C. recognizing cell boundaries.

D. forming collagen to bind cells together.

E. increasing inflammation

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1.When something appears blue, it is absorbing all colors except__________.

yellow

blue

red

green

orange

2.During heavy exercise, lactic acid can build up in ourmuscles. Why? How does this resemble the metabolism of bacteria andyeast?

lactic acid is results from insufficient oxygen during sugarmetabolism; it is fermentation

lactic acid accumulates when we are dehydrated; bacteria andyeast use the same pathway

lactic acid is built up from carbon dioxide; bacteria and yeaststore energy in this way

3.Why must a cell keep a similar concentration of dissolvedsubstances with the fluid surrounding them?

to avoid dilution of potential energy

to avoid osmotic imbalance and rapid gain or loss of water

to maintain the correct amount of dehydration and hydrolysis

4.What is entropy?

the amount of energy in a system

the amount of disorganization

the amount of organization

5.Burning a log is the reverse reaction found in photosynthesis.What products would be formed in burning a log?

carbon dioxide and water

glucose and oxygen

oxygen and carbon dioxide

oxygen and water

6.The main reason that cellular respiration needs to occur stepby step instead of a single, big reaction is

cells don't store enough oxygen

too much energy would be released for the cell to harness

cells don't have many mitochondria.

cells produce the enzymes needed for cellular respiration veryslowly

7.Enzymes are catalysts because they operate to:

raise activation energy

lower activation energy

supply activation energy

supply the reactants

8.When ATP powers a reaction it becomes ADP. The ADP

can reform ATP by an exergonic reaction

is a waste product for lysosomal breakdown

can reform ATP by an endergonic reaction

can reform ATP by an oxidation reaction

can reform ATP by an equilibrium reaction

9.The energy source that drives photosynthesis is

water

glucose

carbon dioxide

oxygen

sunlight

10. What is the process by which enzymes regulate their ownactivity?

osmosis

self-propulsion

feedback inhibition

11.Coupled reactions are reactions in which a

endergonic reaction drives a spontaneous reaction

exergonic reaction drives a spontaneous reaction

endergonic reaction drives an exergonic reaction

exergonic reaction drives an endergonic reaction

12.How is water used in photosynthesis?

as a substrate for ATP synthase

as an electron donor

to combine with ADP forming ATP

as an electron acceptor

13.Why are the âDark Reactionsâ of photosynthesis referred to asâDarkâ?

they do not require light

they can only occur at night

they generate excess sugar and the leaves turn brown

14.What is the difference between potential and kineticenergy?

potential is stored, kinetic is being used

potential is being used, kinetic is ready to be used

potential is negative, kinetic is positive

15.The products of cellular respiration are

carbon dioxide, water, and ATP

glucose, water, and ATP

glucose, carbon dioxide, and ATP

oxygen, ATP, and water

carbon dioxide, glucose, and water

16.All of the following are correct about energy except:

The biological world gets its energy from the sun.

Chemical bonds store potential energy.

A boulder perched on a hill has kinetic energy.

Energy is defined as the ability to do work.

All forms of energy can be converted to heat.

17.What is needed for the end product of glycolysis, pyruvate,to enter the citric acid cycle?

More glucose for energy

ATP

Oxygen

Carbon dioxide

18.The enzyme that forms a transmembrane channel in mitochondriaand phosphorylates ADP

a carrier protein

ATP synthase

acetyl CoA

19.Fermentation is most common in

plants

microorganisms

animals

20.During adsorption of sunlight by photosystems, H+ ions aregenerated. Where do they come from? What are they used for?

from the breakdown of sugar; they help form water

water; they help form sugar

from carbon dioxide; they help dissolve NaCl

21.Glycolysis

does not use oxygen

uses oxygen

uses carbon dioxide

22.Photosynthesis is

not dependent on chlorophyll

a process that produces glucose and oxygen

a process that produces water and carbon dioxide

23.Breakdown of glucose generates many ATP molecules, each ofwhich can be used independently. Why is ATP ideally suited to powerbiological reactions?

ATP has many hydrogen bonds

ATP has enough energy to power one biological reaction

ATP readily dissolves in water

24.Objects that are not actively moving but have the capacity todo so are said to possess:

kinetic energy

entropy

potential energy

living energy

25.The first stage of cellular respiration, called ___________,takes place in the cytoplasm of the cell and needs no oxygen.

photorespiration

citric acid cycle

glycolysis

oxidation

26.Diffusion

requires energy

utilizes proteins to move molecules across a membrane

moves molecules against a concentration gradient

does not require energy

cannot occur without a membrane present

27.What is the name of the molecule on which an enzymeworks?

substrate

monomer

polymer

28.ATP contains

phenylalanine

two phosphate groups

three nitrate groups

three phosphate groups

29.How does chlorophyll function in photosynthesis?

by absorbing carbon dioxide

by absorbing the sun's energy

by absorbing water

30.Objects that are moving are said to possess:

living energy

potential energy

entropy

kinetic energy

31.The respiration pathway that evolved first is probably

glycolysis

aerobic respiration

citric acid cycle

32.The energy source for the process of photosynthesis is

oxygen

sunlight

carbon dioxide

chlorophyll

glucose

33.Burning wood generates heat and light. What type of reactionis this?

exergonic

kinetic energy

endergonic

potential energy

equilibrium

34.What is meant by a âcoupled reactionâ in terms of energy?

many poymers are built simultaneously

energy released by one reactions powers another reaction

some reactions occur in the same organelle

35.The First Law of Thermodynamics states:

energy is constantly being created by entropy events

energy can be changed from one form to another, but cannot becreated or destroyed

energy can be used and then destroyed because of entropy'sactions on it

energy can be destroyed while it is producing entropy

36.How do we dispose of the carbon derived from the glucose thatis metabolized during respiration?

by breathing out

via our urine

it is broken down in lysosomes

37.Both plant and animal cells have mitochondria because theyboth

carry on respiration

carry on photosynthesis.

require water

38.What is Activation Energy?

the energy needed to initiate a reaction

the energy that transports water into cells

potential energy

39.If you put a plant in a chamber and shine a light on it

oxygen will decrease and carbon dioxide will increase

oxygen will increase and carbon dioxide will decrease

oxygen and carbon dioxide will increase

oxygen and carbon dioxide will decrease

40.What are the inputs and the output molecules for the overallphotosynthetic process?

input sugar and oxygen; output carbon dioxide and water

input oxygen and water; output sugar and carbon dioxide

input carbon dioxide and water;output sugar and oxygen

41.What kind of reaction is photosynthesis?

endergonic

kinetic energy

exergonic

potential energy

equilibrium

42.In the process of glycolysis, glucose is cleaved into a pairof three-carbon molecules called

lactate

pyruvate

acetyl CoA

ATP

alcohol

43.Entropy is

order

disorder

complexity

Both order and disorder are correct

Both complexity and disorder are correct

44.Glycolysis takes place in the _____________ and the citricacid cycle and electron transport chain take place in the___________.

cytoplasm; endoplasmic reticulum

mitochondria, chloroplast

mitochondria; cytoplasm

cytoplasm; mitochondria

45.The organelle that carries out photosynthesis in plants isthe

mitochondria

chloroplast

ribosome

chlorophylllysosome

46.The energy to power the Calvin cycle comes from

cellular respiration

oxygen

the light reactions of photosynthesis

47.Which of the following can be broken down into intermediateproducts that enter cellular respiration?

Proteins

Lipids

Carbohydrates

All of these.

48.When cellular product levels get too high, the responsibleenzyme is inhibited. This is an example of

promotion

denaturation

equilibrium

a coenzyme

feedback inhibition

49.How is respiration the opposite of photosynthesis?

respiration breaks sugar down to carbon dioxide; photosynthesisbuilds sugar from carbon dioxide

respiration builds sugar from carbon dioxide; photosynthesisbreaks sugar down to carbon dioxide

respiration requires energy input; photosynthesis gives offexcess energy

50.The molecule that absorbs sunlight for photosynthesis is

oxygen

carbon dioxide

chlorophyll

glucose

sunlight

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BIO325H5 Lecture : Feb. 1 Lecture Notes

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