exam 2 actual
which of the following molecules is the pentose sugar found in RNA?
12
which of the following molecules could be called a disaccharide?
15 - the one with 2 hexagon shapes that look like they're holding hands
Which bond is closest to the amino terminus of the molecule?
A
cells require which of the following to form cytoskeleton?
A, B and C
tertiary structure of protein??
Defined by the hydrophilic and hydrophobic interactions between R groups of amino acid chains.
osmosis
Diffusion of water through a selectively permeable membrane
Diffusion
Movement of molecules from an area of higher concentration to an area of lower concentration.
all organisms are made up of cells who said this
Robert Hooke
which of the following statements correctly describes the normal tonicity conditions for typical plant and animal cells?
The animal cell is in an isotonic solution, and the plant cell is in a hypotonic solution.
secondary structure of protein??
The way in which the chain of amino acids of the polypeptides of a protein is folded.
the cell membranes of antarctic ice fish might have which of the following adaptations?
a high percentage of polyunsaturated fatty acids
which of the following descriptions best fits the class of molecules known as nucleotides?
a nitrogenous base, a phosphate group, and a pentose sugar
the chemical reaction illustrated in the figure below___
all options are correct
primary structure of protein??
amino acid sequence
the movement of potassium into an animal cell requires
an energy source such as ATP
You will not find a cell wall in
animals
you will not find a cell wall in
animals
steroids are considered to be lipids because they
are not soluble in water
to study organelles of eukaryotic cells, ___ is a useful technique
cell fragmentation
what does the term insoluble fiber refer to on food packages?
cellulose
which organelle or structure is absent in plant cells?
centrosomes
in what ways do the various membranes of a cell differ?
certain proteins are unique to each membrane
All of the following are part of a prokaryotic cell except
endoplasmic reticulum
protein
enzyme
.... which transport mechanism is most probably functioning in the intestinal cells?
facilitated diffusion
which transport mechanism is most probably functioning in the intestinal cells?
facilitated diffusion
a cell primarily producing proteins in the cytosol will do so with the help of
free ribosomes
Which of the following is NOT a polymer?
glucose
lipid
hydrophobic
carbohydrate
immediate and long term energy
in a plant cell, dna may be found ____
in the nucleus, mitochondria, and chloroplasts
molecule illustrated in the figure below
is a saturated fatty acid
Which of the classes of biological molecules does NOT include polymers?
lipids
Which organelle is the primary site of ATP synthesis in eukaryotic cells?
mitochondria
according to the endosymbiont theory, which of the following organelles have DNA
mitochondria and chloroplast
Which structure is common to plant and animal cells?
mitochondrian
which organelle is the primary site of ATP synthesis in eukaryotic cells?
mitochondrian
a molecules with the chemical formula c6h12o6 is probably a
monosaccharide
suppose a cell has the following molecules and structures: enzymes, DNA, ribosomes, plasma membrane, and mitochondria. it could be a cell from?
nearly any eukaryotic organism
nucleic acids are polymers made up of monomers and ____.
nucleotides
quarternary structure of protein
overall protein structure, combining 2 or more polypeptides
A glycosidic linkage in polysaccharides is analogous to which of the following in proteins?
peptide bond
which of the above is a functional group that you find in phospholipids and in nucleic acids
phosphate groups ?
which molecule has both hydrophilic and hydrophobic properties and is found in plasma membranes?
phospholipid (need pic) 4?
which of the following types of molecules are the major structural components of the cell membrane?
phospholipids and proteins
facilitated diffusion
process of diffusion in which molecules pass across the membrane through cell membrane channels
which of these classes of biological molecules have the most variety of functions?
proteins
which of the following help organisms move?
pseudopodia cilia flagella (but not flagella?)
which of the following is present in both a prokaryotic and a eukaryotic cell?
ribosome
dialysis
separation of molecules through a semipermeable membrane
What kinds of molecules pass through a cell membrane most easily?
small and hydrophobic
the liver is involved in detoxification of many poisons and drugs. which of the following structures is primarily involved in this process and, therefore, abundant in liver cells?
smooth er
what technique would be most appropriate to use to observe an amoeba eating a smaller protist?
standard light microscopy
nucleic acid
storing and processing of genetic information
which organelle often takes up much of the volume of a plant cell?
vacuole
