Bio 93 Midterm 1 Review questions with accurate
answers
Amino Acid Ans✓✓✓ An organic molecule possessing both a carboxyl
and an amino group
Antiparallel Ans✓✓✓ Referring to the arrangement of the sugar-
phosphate backbones in a DNA double helix
Brightfield Ans✓✓✓ Simplest of all microscopy
Carbohydrate Ans✓✓✓ A sugar (monosaccharide) or one of its dimers
or polymers
Chitin Ans✓✓✓ A structural polysaccharide consisting of amino sugar
monomers, found in many frugal cell walls and in the exoskeletons of all
anthropods
Cholesterol Ans✓✓✓ A steroid that forms an essential component of
animal cell membranes and acts as a precursor molecule for the
synthesis of other biologically important steroids, such as hormones
Collagen Ans✓✓✓ A glycoprotein in the extracellular matrix of animal
cells that forms strong fibers, found extensively in connective tissue and
bone
, Confocal Ans✓✓✓ Optical imaging technique for increasing optical
resolution and contrast of a micrograph by means of adding a spatial
pinhole placed at the confocal plane of the lens to eliminate out-of-focus
light, creates 3D images
Cytoskeleton Ans✓✓✓ A network of microtubules, microfilaments,
and intermediate filaments that extend through the cytoplasm and serve
a variety of mechanical, transport, and signaling functions
Diffusion Ans✓✓✓ Going from an area of high concentration to low
concentration
Disaccharide Ans✓✓✓ A double sugar
Disulfide Bridge Ans✓✓✓ A strong covalent bond formed when the
sulfur of one cysteine monomer bonds to the sulfur of another cysteine
monomer
DNA Ans✓✓✓ A nucleic acid molecule, double stranded helix, capable
of being replicated and determines the inherited structure of a cell's
proteins
Electrochemical Gradient Ans✓✓✓ Diffusion gradient of an ion, which
is affected by both the concentration difference of an ion across the
membrane and the ion's tendency to move relative to the membrane
potential
answers
Amino Acid Ans✓✓✓ An organic molecule possessing both a carboxyl
and an amino group
Antiparallel Ans✓✓✓ Referring to the arrangement of the sugar-
phosphate backbones in a DNA double helix
Brightfield Ans✓✓✓ Simplest of all microscopy
Carbohydrate Ans✓✓✓ A sugar (monosaccharide) or one of its dimers
or polymers
Chitin Ans✓✓✓ A structural polysaccharide consisting of amino sugar
monomers, found in many frugal cell walls and in the exoskeletons of all
anthropods
Cholesterol Ans✓✓✓ A steroid that forms an essential component of
animal cell membranes and acts as a precursor molecule for the
synthesis of other biologically important steroids, such as hormones
Collagen Ans✓✓✓ A glycoprotein in the extracellular matrix of animal
cells that forms strong fibers, found extensively in connective tissue and
bone
, Confocal Ans✓✓✓ Optical imaging technique for increasing optical
resolution and contrast of a micrograph by means of adding a spatial
pinhole placed at the confocal plane of the lens to eliminate out-of-focus
light, creates 3D images
Cytoskeleton Ans✓✓✓ A network of microtubules, microfilaments,
and intermediate filaments that extend through the cytoplasm and serve
a variety of mechanical, transport, and signaling functions
Diffusion Ans✓✓✓ Going from an area of high concentration to low
concentration
Disaccharide Ans✓✓✓ A double sugar
Disulfide Bridge Ans✓✓✓ A strong covalent bond formed when the
sulfur of one cysteine monomer bonds to the sulfur of another cysteine
monomer
DNA Ans✓✓✓ A nucleic acid molecule, double stranded helix, capable
of being replicated and determines the inherited structure of a cell's
proteins
Electrochemical Gradient Ans✓✓✓ Diffusion gradient of an ion, which
is affected by both the concentration difference of an ion across the
membrane and the ion's tendency to move relative to the membrane
potential
