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30 Cards in this Set

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What are the basic “building blocks” of DNA?
four nucleotides
Glycogen:
1) contains glucose molecules. 2) contains C, H, and O atoms. 3) is a polysaccharide. 4) is a storage molecule for sugar in animals
What is the basic function of peptide bonds
link amino acids
You are told that the cells on a microscope slide are plant, animal, or bacterial. You look at them through a microscope and see cell walls and membrane-bound organelles. You conclude that the cells are:
Plant cells,

NOT bacterial or animal
Is bacteria prokaryotic or eukaryotic?
prokaryotic
Which of these cell features is absent in a prokaryote cell? 1) Plasma membrane 2) Nucleoid 3) Cytoplasm 4) Nucleus 5) DNA.
Nucleoid
If nucleotides and nucleic acids were suddenly eliminated from your body, how would it affect you?
1) you would be unable to reproduce. 2) you could no longer use energy. 3) your cells could not divide. 4) your cells could not make proteins
The fluid mosaic model refers to:
the arrangement of components in plasma membranes
The bulk of intracellular transport of materials is carried out by the:
endoplasmic reticulum and Golgi apparatus
The process which transports a solute across membrane to a region of higher concentration and involves the expenditure of chemical energy, is called:
active transport
The movement of molecules from areas of higher to lower concentration is called:
diffusion
which is probably the most common route for membrane flow in the endomembrane system?
Rough ER _ smooth ER _ Golgi _ plasma membrane.
If a lysosome bursts inside a cell, the immediate result is likely to be:
the cell will be digested from within
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:
exhibit a net movement to the side with lower water concentration.
What sometimes act as cellular support for cells and unicellular organisms?
microtubules
What describes the structure of unit membrane according to Danielli?
protein-lipid-protein
Cells need the greatest possible surface area across which to exchange materials with the environment. The __________ the cell, the greater will be its surface area in proportion to its volume.
Smaller
A cell that does not exchange materials with its immediate environment is:
probably dead
A cell with a great deal of rough endoplasmic reticulum would most likely be heavily involved in:
protien synthesis
Which would only be found in a eukaryotic cell. 1) cytoplasm 2) plasma membrane 3) cell wall 4) Golgi apparatus 5) cell wall.
Golgi
One of the most pronounced differences between animal and plant cells is that:
plant cells have relatively large fluid-filled vacuole
Organelles composed of a system of canals, tubes, and sacs that transport molecules inside the cytoplasm are:
ER
A scientific explanation that is tentative and that requires more investigation is termed a/an:
hypothesis
The difference in soil weight before and after van Helmont’s growth experiment clearly indicates today that
soil is important in this respect in only very small quantities
Stacks of thylakoids are called:
grana
Which of the following does not occur in the light reaction? 1) production of oxygen 2) carbohydrate formation 3) conversion of ADP to ATP 4) conversion of light energy to chemical bond energy 5) movement of electrons.
carbohydrate formation
Which is the best general description of photosynthesis?
it uses light, carbon dioxide, and water to make sugars
In the chloroplast, sugars are made in a compartment that is filled with a thick fluid called the:
stroma
Do photosynthesizing plants have mitochondria?
Yes, to supply the plant with the ATP needed to power various cell activities
The light-harvesting antennas of chlorophyll are located specifically, in the:
thylakoids