Biology 1111 Midterm Exam And 100%
Correct Answers 2025 Edition.
cells - Answer Basic unit of life
organelles - Answer A specialized structure within a cell, such as a mitochondrion, vacuole, or
chloroplast, that performs a specific function. "Little organs"
What does pH measure? - Answer the concentration of hydrogen ions in a solution
pH ranges - Answer acid:1-6; neutral:7; base:8-14
Protein Structures - Answer primary, secondary, teritary, quaternary structure.
Cell membrane structure - Answer fluid mosaic model
semi-permeable (selectively permeable)
double layer of phospholipids with embedded proteins
what does the membrane model show - Answer gives a perception of position in space while
still
Dehydration synthesis - Answer forms covalent bonds between monomers by removing water
Ex)
Hydrolysis - Answer break covalent bonds in polymers by adding water
Scientific method - Answer
Difference between a hypothesis and theory - Answer A ______ is an attempt to explain
phenomena. It is a proposal, a guess used to explain something. A _____ is the result of testing
a ______ and developing an explanation that is taken to be true about a phenomena. A _____
replaces the _____.
, Archaea domain - Answer prokaryotes and live in some of the most extreme environments--
volcanic hot springs, brine pools, and black organic mud totally devoid of oxygen. Their cell walls
lack peptidoglycan, and their cell membranes contain unusual lipids that are not found in any
other organisms
Bacteria domain - Answer prokaryotic, no nuclear membrane, traditionally classified as
bacteria, contain most known pathogenic prokaryotic organisms, studied far more extensively
than Archaea
Eukaryota domain - Answer eukaryotic, includes multicellular organisms that are either
protist, fungi, plants, and animals
Kingdoms - Answer
Atom structure - Answer consists of a nucleus surrounded by one or more electrons. the
electrons can either be protons or neutrons.
Charged atom - Answer ION
ION - Answer an atom or group of atoms that has acquired a net electrical charge by gaining or
losing one or more electrons
Atomic number - Answer Number of protons in the nucleus of an atom
Atomic mass - Answer Protons + Neutrons
Isotopes - Answer Atoms of the same element that have different numbers of neutrons.
Monomer of polymer: carbohydrate - Answer Like most classes of biological molecules,
_______occur as both monomers and polymers. Small ______ are called sugars, which
commonly include monosaccharides (single sugars) and some disaccharides (two sugars linked
together). Larger ______ are called polysaccharides (many sugars linked together).
Monomer of polymer: nucleic acid - Answer ______ are polymers of individual nucleotide
monomers. Each nucleotide is composed of three parts: a 5-carbon sugar, a phosphate group,
Correct Answers 2025 Edition.
cells - Answer Basic unit of life
organelles - Answer A specialized structure within a cell, such as a mitochondrion, vacuole, or
chloroplast, that performs a specific function. "Little organs"
What does pH measure? - Answer the concentration of hydrogen ions in a solution
pH ranges - Answer acid:1-6; neutral:7; base:8-14
Protein Structures - Answer primary, secondary, teritary, quaternary structure.
Cell membrane structure - Answer fluid mosaic model
semi-permeable (selectively permeable)
double layer of phospholipids with embedded proteins
what does the membrane model show - Answer gives a perception of position in space while
still
Dehydration synthesis - Answer forms covalent bonds between monomers by removing water
Ex)
Hydrolysis - Answer break covalent bonds in polymers by adding water
Scientific method - Answer
Difference between a hypothesis and theory - Answer A ______ is an attempt to explain
phenomena. It is a proposal, a guess used to explain something. A _____ is the result of testing
a ______ and developing an explanation that is taken to be true about a phenomena. A _____
replaces the _____.
, Archaea domain - Answer prokaryotes and live in some of the most extreme environments--
volcanic hot springs, brine pools, and black organic mud totally devoid of oxygen. Their cell walls
lack peptidoglycan, and their cell membranes contain unusual lipids that are not found in any
other organisms
Bacteria domain - Answer prokaryotic, no nuclear membrane, traditionally classified as
bacteria, contain most known pathogenic prokaryotic organisms, studied far more extensively
than Archaea
Eukaryota domain - Answer eukaryotic, includes multicellular organisms that are either
protist, fungi, plants, and animals
Kingdoms - Answer
Atom structure - Answer consists of a nucleus surrounded by one or more electrons. the
electrons can either be protons or neutrons.
Charged atom - Answer ION
ION - Answer an atom or group of atoms that has acquired a net electrical charge by gaining or
losing one or more electrons
Atomic number - Answer Number of protons in the nucleus of an atom
Atomic mass - Answer Protons + Neutrons
Isotopes - Answer Atoms of the same element that have different numbers of neutrons.
Monomer of polymer: carbohydrate - Answer Like most classes of biological molecules,
_______occur as both monomers and polymers. Small ______ are called sugars, which
commonly include monosaccharides (single sugars) and some disaccharides (two sugars linked
together). Larger ______ are called polysaccharides (many sugars linked together).
Monomer of polymer: nucleic acid - Answer ______ are polymers of individual nucleotide
monomers. Each nucleotide is composed of three parts: a 5-carbon sugar, a phosphate group,
