age 1 of 31
BSC1005 MIDTERM MDC QUESTIONS AND ANSWERS
100% VERIFIED
extracellular matrix (ECM) ......ANSWER........a substance in which
the cells of an animal tissue are embedded; consists of protein
and polysaccharides
biodiversity ......ANSWER........The variety of living things,
encompassing genetic diversity, species diversity and ecosystem
diversity
intermembrane space ......ANSWER........one of the two fluid-filled
internal compartments of the mitochondrion. The intermembrane
space is the narrow region between the inner and outer
membranes.
,age 2 of 31
cellulose ......ANSWER........a large polysaccharides composed of
many glucose monomers linked into cable-like fibrils that provide
structural support in plant cell walls.
hypotonic solution ......ANSWER........in comparing two solutions,
the one with the lower concentration of solutes; cells in such a
solution will take up water from their surroundings.
ozone layer ......ANSWER........the layer of ozone (o3) in the
upper atmosphere that protects life on earth from the harmful
ultraviolet rays in sunlight
pH scale ......ANSWER........a measure of the relative acidity of a
solution, ranging in value from 0(most acidic) to 14 (most basic).
The letter pH stand for potential hydrogen ions (H)
ionic bond ......ANSWER........a chemical bond resulting from the
attraction between oppositely charges ions.
,age 3 of 31
age structure ......ANSWER........the relative number of individuals
of each age in a population
polar covalent bond ......ANSWER........a covalent bond between
atoms that differ in electronegativity. The shared electrons are
pulled closer to the more electronegative atom, making it slightly
positive.
chromosome ......ANSWER........a threadlike, gene-carrying
structure found in the nucleus of a eukaryotic cell and most
visible during mitosis and meiosis; also, the main gene-carrying
structure of a prokaryotic cell. Chromosomes consist of chromatin,
a combination of DNA and protein.
transport vesicle ......ANSWER........a tiny membranous sac in a
cell's cytoplasm carrying molecules produced by the cell. The
vesicle buds from the endoplasmic reticulum or Golgi and
, age 4 of 31
eventually fuses with another membranous organelle of the
plasma membrane, releasing it's contents.
carboxyl group ......ANSWER........in an organic molecule, a
functional group consisting of an oxygen atom double-bonded
to a carbon atom that is also bonded to a hydroxyl group
microtubule ......ANSWER........the thickest of the three main kinds
of fibers making up the cytoskeleton of a eukaryotic cell; a
straight, hollow tube made of globular proteins called tubulins.
microtubes from the basis of the structure and movement of cilia
and flagella.
nucleus ......ANSWER........an atom's central core, containing
protons and neutrons/ The genetic control center of a eukaryotic
cell.
BSC1005 MIDTERM MDC QUESTIONS AND ANSWERS
100% VERIFIED
extracellular matrix (ECM) ......ANSWER........a substance in which
the cells of an animal tissue are embedded; consists of protein
and polysaccharides
biodiversity ......ANSWER........The variety of living things,
encompassing genetic diversity, species diversity and ecosystem
diversity
intermembrane space ......ANSWER........one of the two fluid-filled
internal compartments of the mitochondrion. The intermembrane
space is the narrow region between the inner and outer
membranes.
,age 2 of 31
cellulose ......ANSWER........a large polysaccharides composed of
many glucose monomers linked into cable-like fibrils that provide
structural support in plant cell walls.
hypotonic solution ......ANSWER........in comparing two solutions,
the one with the lower concentration of solutes; cells in such a
solution will take up water from their surroundings.
ozone layer ......ANSWER........the layer of ozone (o3) in the
upper atmosphere that protects life on earth from the harmful
ultraviolet rays in sunlight
pH scale ......ANSWER........a measure of the relative acidity of a
solution, ranging in value from 0(most acidic) to 14 (most basic).
The letter pH stand for potential hydrogen ions (H)
ionic bond ......ANSWER........a chemical bond resulting from the
attraction between oppositely charges ions.
,age 3 of 31
age structure ......ANSWER........the relative number of individuals
of each age in a population
polar covalent bond ......ANSWER........a covalent bond between
atoms that differ in electronegativity. The shared electrons are
pulled closer to the more electronegative atom, making it slightly
positive.
chromosome ......ANSWER........a threadlike, gene-carrying
structure found in the nucleus of a eukaryotic cell and most
visible during mitosis and meiosis; also, the main gene-carrying
structure of a prokaryotic cell. Chromosomes consist of chromatin,
a combination of DNA and protein.
transport vesicle ......ANSWER........a tiny membranous sac in a
cell's cytoplasm carrying molecules produced by the cell. The
vesicle buds from the endoplasmic reticulum or Golgi and
, age 4 of 31
eventually fuses with another membranous organelle of the
plasma membrane, releasing it's contents.
carboxyl group ......ANSWER........in an organic molecule, a
functional group consisting of an oxygen atom double-bonded
to a carbon atom that is also bonded to a hydroxyl group
microtubule ......ANSWER........the thickest of the three main kinds
of fibers making up the cytoskeleton of a eukaryotic cell; a
straight, hollow tube made of globular proteins called tubulins.
microtubes from the basis of the structure and movement of cilia
and flagella.
nucleus ......ANSWER........an atom's central core, containing
protons and neutrons/ The genetic control center of a eukaryotic
cell.
