BSC 1005 Unit 1 for tcc questions with verified answers
acid Ans✓✓✓ -Substance that releases hydrogen ions(H+) in water
-pH less than 7
adhesion proteins Ans✓✓✓ help cells stick together
all living things have similar characteristics Ans✓✓✓ -Require energy
and nutrients
-Sense and respond to change
-Reproduce with the help of DNA
Amino Acids Ans✓✓✓ -small organic compound with a carboxyl group,
amine group, and a characteristic side group (R)
-linked into chains by peptide bonds
animal Ans✓✓✓ multi-celled consumer that develops through a series
of embryonic stages and moves about during all or part of the life cycle
Archaeans Ans✓✓✓ A member of the prokaryotic domain Archaea
-Seem to prefer extreme or hostile conditions (extremophiles)
-Example: hot springs, ice, high salt and/or pressure.
Atom Ans✓✓✓ -fundamental building block of all matter
,-Life's unique characteristics start with the properties of different
atoms
-Atoms consist of electrons moving around a nucleus of protons and
neutrons
atomic number Ans✓✓✓ -Number of protons in the atomic nucleus
-Determines the element
ATP Ans✓✓✓ -Adenosine triphosphate
-A nucleotide that can transfer a phosphate group and energy to other
molecules, and is important in metabolism
-Nucleotide that consists of an adenine base, five-carbon ribose sugar,
and three phosphate groups
-Functions as an energy carrier
Bacterium Ans✓✓✓ a member of the prokaryotic domain Archaea
balancing charge in nucleus? Ans✓✓✓ The negative charge of an
electron balances the positive charge of a proton in the nucleus
base Ans✓✓✓ -Substance that releases hydroxide ions(OH-) (accepts
hydrogen ions) in water
, -pH greater than 7
biosphere Ans✓✓✓ all regions of Earth that hold life
buffer Ans✓✓✓ -this keeps solutions in cells and tissues within a
consistent range of pH
-Set of chemicals that can keep the pH of a solution stable by
alternately donating and accepting ions that contribute to pH
Carbohydrates Ans✓✓✓ -Cells use carbohydrates for energy and
structural materials
-Molecules that consist primarily of carbon, hydrogen, and oxygen
atoms in a 1:2:1 ratio
carbon Ans✓✓✓ the molecule of life
cell Ans✓✓✓ smallest unit of life
cell wall Ans✓✓✓ -Semirigid but permeable structure that surrounds
the plasma membrane of some cells
-Consists of peptides and polysaccharides (in bacteria) or proteins (in
archaeans)
-In some bacteria, a sticky capsule of polysaccharides surrounds the cell
wall
acid Ans✓✓✓ -Substance that releases hydrogen ions(H+) in water
-pH less than 7
adhesion proteins Ans✓✓✓ help cells stick together
all living things have similar characteristics Ans✓✓✓ -Require energy
and nutrients
-Sense and respond to change
-Reproduce with the help of DNA
Amino Acids Ans✓✓✓ -small organic compound with a carboxyl group,
amine group, and a characteristic side group (R)
-linked into chains by peptide bonds
animal Ans✓✓✓ multi-celled consumer that develops through a series
of embryonic stages and moves about during all or part of the life cycle
Archaeans Ans✓✓✓ A member of the prokaryotic domain Archaea
-Seem to prefer extreme or hostile conditions (extremophiles)
-Example: hot springs, ice, high salt and/or pressure.
Atom Ans✓✓✓ -fundamental building block of all matter
,-Life's unique characteristics start with the properties of different
atoms
-Atoms consist of electrons moving around a nucleus of protons and
neutrons
atomic number Ans✓✓✓ -Number of protons in the atomic nucleus
-Determines the element
ATP Ans✓✓✓ -Adenosine triphosphate
-A nucleotide that can transfer a phosphate group and energy to other
molecules, and is important in metabolism
-Nucleotide that consists of an adenine base, five-carbon ribose sugar,
and three phosphate groups
-Functions as an energy carrier
Bacterium Ans✓✓✓ a member of the prokaryotic domain Archaea
balancing charge in nucleus? Ans✓✓✓ The negative charge of an
electron balances the positive charge of a proton in the nucleus
base Ans✓✓✓ -Substance that releases hydroxide ions(OH-) (accepts
hydrogen ions) in water
, -pH greater than 7
biosphere Ans✓✓✓ all regions of Earth that hold life
buffer Ans✓✓✓ -this keeps solutions in cells and tissues within a
consistent range of pH
-Set of chemicals that can keep the pH of a solution stable by
alternately donating and accepting ions that contribute to pH
Carbohydrates Ans✓✓✓ -Cells use carbohydrates for energy and
structural materials
-Molecules that consist primarily of carbon, hydrogen, and oxygen
atoms in a 1:2:1 ratio
carbon Ans✓✓✓ the molecule of life
cell Ans✓✓✓ smallest unit of life
cell wall Ans✓✓✓ -Semirigid but permeable structure that surrounds
the plasma membrane of some cells
-Consists of peptides and polysaccharides (in bacteria) or proteins (in
archaeans)
-In some bacteria, a sticky capsule of polysaccharides surrounds the cell
wall
