Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/45

Click to flip

45 Cards in this Set

  • Front
  • Back
True or false:
Water potential (which is used to predict the direction water will move under various conditions) is determined gravity, pressure, and solute concentration.
False
True or False:
Proteins and other large molecules pass through biological membranes by facilitated diffusion.
True
True or False:
Simple diffusion allows oxygen, carbon dioxide, and water to pass through biological membranes.
True
True or False:
All carbohydrates in plasma membrane are consist of short-chain oligosaccharides that are attached to membrane proteins.
False
True or False:
The only polysaccharide plants use for storage is starch.
False
True or False:
All phenolic substances are stored in plant cell vacuoles.
False
True or False:
Osmosis is the passive movement of any moderate sized molecule through biological membranes.
True
True or False:
Secondary metabolites provide protection from the sun’s radiation, defend plants against herbivores and pathogens, and serve as chemical signals allowing plants to respond to their environment.
False
True or False:
Turgor pressure in turgid plant cells is equal to wall pressure.
True
True or False:
Nucleotides can function as energy carriers (such as ATP) or can form long chain polymers (as in RNA or DNA).
False
Lipids found in plants include

a. cutin, a lipid found in the bark of trees and shrubs.
b. saturated fatty acids such as peanut oil and corn oil.
c. phospholipid, a non-polar molecule that is a primary component of cellular membranes
d. sitosterol, the most common sterol found in plants.
c
Which of the following is not true of active transport?



a. Active transport requires energy in the form of ATP.

b. Active transport involves a H+-coupled cotransport system.

c. Active transport requires carrier proteins.

d. Active transport is concentration dependent, and materials cannot be moved against a concentration gradient.
b
In plants, proteins



a. account for more than 50% of the dry weight of the organism.

b. are constructed using nitrogen from ammonia, nitrates, and nitrites.

c. are composed entirely of different amino acids than animal proteins.

d. are found primarily in leaves
a
Which of the following is not true of membrane proteins?



a. Some membrane proteins facilitate the movement of water through membranes.

b. Some membrane proteins are bound only to the surface of the membrane and do not extend into it.

c. All membrane proteins float in the lipid bilayer.

d. Some membrane proteins are enzymes involved in such activities as converting one form of energy to another.
c
Cellulose



a. is the most abundant organic compound known.

b. is a polymer of the monosaccharide ribose.

c. can be digested by most animals and fungi.

d. is an example of a protein.
c
T/F
Secondary metabolites provide protection from the sun’s radiation, defend plants against herbivores and pathogens, and serve as chemical signals allowing plants to respond to their environment.
True
T/F
Simple diffusion allows oxygen, carbon dioxide, and water to pass through biological membranes.
True
T/F
Osmosis is the passive movement of any moderate sized molecule through biological membranes.
False
T/F
All carbohydrates in plasma membrane are consist of short-chain oligosaccharides that are attached to membrane proteins.
False
T/F
Water potential (which is used to predict the direction water will move under various conditions) is determined gravity, pressure, and solute concentration.
True
T/F
The only polysaccharide plants use for storage is starch.
False
T/F
Nucleotides can function as energy carriers (such as ATP) or can form long chain polymers (as in RNA or DNA).
True
T/F
All phenolic substances are stored in plant cell vacuoles
False
T/F
Proteins and other large molecules pass through biological membranes by facilitated diffusion.
False
T/F
Turgor pressure in turgid plant cells is equal to wall pressure.
True
Cellulose
is the most abundant organic compound known
Which of the following is not true of active transport?
Active transport is concentration dependent and materials cannot be moved against a concentration gradient
Which of the following is not true of membrane proteins?
All membrane proteins float in the lipid bilayer
Lipids found in plants include
sitostel, the most common sterol found in plants
In plants, proteins
are constructed using nitrogen from ammonia, nitrates, and nitrites
T/F
The phragmosome is a sheet of cytoplasm that forms where the new cell wall will ultimately form during cell division
True
T/F
The cell plate forms as the phragmosome directs Golgi vesicles to the center of the dividing cell.
False
T/F
Mitosis can occur in haploid cells.
True
T/F
Actin filaments are aligned parallel to the preprophase band during G2 of interphase
True
T/F
The phragmoplast consists of microtubules that, with actin filaments, direct the formation of the cell plate
True
T/F
One way in which genetic variation is produced in meiosis is through random orientation of chromosomes at metaphase II.
False
T/F
The number of cells produced varies with the type of cell division that occurs. At the conclusion of meiosis, two cells are produced while at the conclusion of mitosis, four cells are produced.
False
T/F
Prophase I of meiosis differs from prophase of mitosis because, in prophase of mitosis, there is pairing of homologous chromosomes and crossing-over occurs, and these two processes are not present in prophase I of meiosis.
False
T/F
In meiosis, anaphase I separates homologous chromosomes from one another while anaphase II separates sister chromatids from one another.
True
T/F
Two events that are always present during sexual reproduction are meiosis and fertilization.
True
Spindel fibers
pull daughter chromosomes to opposite poles of the cell by the action of motor proteins and by shortening of kenetochore microtubules
Meiosis
produces either gametes or spores
Which of the following is not true of mitosis
Cells that differ genetically from one another and from the parent cell result from mitosis.
Crossing over
results in genetic recombination by recombining DNA inherited from both parents
Metaphase of mitosis differs from metaphase I of meiosis in that in mitosis
kinetochore microtubules extending from opposite poles of the cell attach to the two kinetochores of the chromosome in preparation for the separation of chromatids at anaphase.