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29 Cards in this Set

  • Front
  • Back
Which microscope has the highest magnification?
Scanning electron
The phospholipid molecules of most membranes have
a. a hydrophobic head and a hydrophilic tail
b. a hydrophobic head and a bydrophobic tail.
c. a hydrophobic head and two hydrophobic tails
d. a hydrophilic head and two hydrophobic tails.
e. none of these
d. hydrophilic head and two hydorphobic tails.
Radioactive isotopes are
electrically unbalanced
Which of the following membrane proteins is responsible for binding hormones that can switch on a cell?
receptor proteins
A molecule that gives up an electron becomes
a. ionized
b. oxidized
c. reduced
d. both ionized and oxidized
e both ionized and reduced
b. oxidized
pg 79
The first cell that was seen under a microscope was a
a. cork cell
b. blood cell
c. sperm cell
d. skin cell
e. root tip cell
a. cork cell
Thylakoid disks are
a. staked
b. separate compartments
c. also called the stroma
d. participants in the light independent reactions.
e. none of these
a. stacked
Organisms that derive their chemical energy either from the process of chemosynthesis or photosynthesis are classified as
a. autotrophs.
b. parasites.
c. heterotrophs.
d. saprophytes.
e. mutualists.
a. autotrophs.
During metabolism, ATP (adenosine triphospate) is an energy source for the following process
a. reproduciton and growht
b. reproduction and maintenance
c. growth
d. growth and maintenance
e. reproduction, growth, and maintenance
e. reproduction, growth, and maintenance
A mutation is a change in
a. homeostasis
b. the developmental pattern in an organism
c. metabolism.
d. hereditary instructions.
e. the life cycle of an organism
b. the developemental pattern in an organism
Chlorophyll reflects (does not absorb) which color of light?
a. red
b. yellow
c. orange
d. green
e. blue
d. green
The oxygen released in photosynthesis comes from
a. carbon dioxide.
b. glucose.
c. ribulose bisphosphate.
d. water.
e. atmospheric oxygen.
d. water
The second law of thermodynamics states that
a. energy can be transformed into matter and, because of this, we can get something for nothing.
b. energy can only be destroyed during nuclear reactions, such as those that occur inside the sun.
c. if energy is gained by one region of the universe, another place in the universe also much gain energy in order to maintain the balance of nature.
d. energy tends to become increasingly more disorganized.
e. none of these
e. none of these
The amount of energy released from a glucose molecule is dependent on what happens to
a. carbon atoms. b. oxygen atoms. c. hydrogen atoms. d. phosphorus atoms. e. water molecules
c. hydrogen atoms, but Not sure
pg 116?
If the atomic weight of carbon is 12 and the atomic weight of oxygen is 16, the molecular weight of glucose C6H12O6 expressed in grams is
a. 24 grams.
b. 28 grams
c. 52 grams.
d. 168 grams.
e. 180 grams.
Not sure
Hereditary instructions must
a. be unchanging most of the time.
b. pas from one generation to the next
c. control a large number of different characteristics
d. provide for the reare change in instructions
e. all of these
e. all of these
the carbon source for organisms that derive their energy from photosynthesis is
a. carbon monoxide
b. carbon dioxide
c. hydrocarbons
d. methane.
e. glucose.
B. Carbon dioxide
pg 92
Which is the smalles portion of a substance that retains the properties of an element?
a atom
b compound
c ion
d molecule
e mixture
a atom
The nucleus of an atom contains
a neutrons and protons
b neutrons and electrons
c protons and electrons
d protons only
e neutrons only
a neutrons and protons
the atomic number is determined by the number of
protons only
Amino acids are the building blocks for
a. proteins
b. steroids
c. lipids
d. nucleic acids
e. carbohydrates
a. proteins.
When NAD+ combines with hydrogen, the NAD+ becomes
a reduced
b oxidized
c phosphorylated
d denatured
e none of these
a reduced
All of the following statements are true EXCEPT:
a. photons are packages of solar energy
b. the longer the wavelength of light, the more energy it has.
c. chlorophyll absorbs energy from light.
d. photons with different energy levels produce different colors.
e. visible light is a very small portion of the electromagnetic spectrum.
b. the longer the wavelenght of light, the more energy it has.
The ability to acquire, store, transfer, or utilize energy is called
a. biochemeitry
b. photosynthesis
c. metabolism
d. respiration
e. phosphorylation
c. metbolism
Which of the following is not a form of active transport?
a. sodium-potassium pump
b. endocytosis
c. exocytosis
d. diffusion
e. none of these
d. diffusion
pg 86-87, 90
Which are NOT macromolecules?
a. proteins
b. starches
c. nuceotides
d. lipids
e. nucleic acids
c. nucleotides
(not sure see page 46)
In simple diffusion
a. the rate of movement of molecules is controlld by temperature and presure
b. the movement of individual molecules is random.
c. the movement of molecules of one substance is independent of the movement of anyother substance.
d. the net movement is away from the region of highest concentration.
e. all of these
e. all of these
According to the first law of themodynamics
a. although energy in the universe is constant, energy in an earthly system may accumulate.
b. the amount of energy in the universe is constant.
c. chemeical reactions do not create or destroy energy.
d. energy can change from one form to another.
e. all of these
b. the amount of energy in the universe is constant
One portion of the cell theory states that
all living organisms are made up of cells