9th grade Biology STAAR Final Exam
Questions All Solved Correctly 2025-
2026 Updated.
Carbohydrates - Answer Made up of: CHO [Carbon, Hydrogen, Oxygen]
{remember energy ones are CHO}
Monomer: Simple sugar
Function: main source of energy, especially short-term energy
ie: glucose {C6H12O6}, starch, cellulose, and glycogen
Lipids - Answer Made up of: CHO [Carbon, Hydrogen, Oxygen]
{remember energy ones are CHO}
Monomer: Triglyceride
Function: used for long-term energy storage
ie: fats, oils, waxes
Proteins - Answer Made up of: CHON{S}
Monomer: Amino Acid
Function: antibodies, muscle movement, enzymes, hormones, structure, and transport
ie: enzymes and cell structure
Nucleic Acid - Answer Made up of: CHONP [Nucleic acid is the longer word so it has longer
"made up of" acronym]
Monomer: Nucleotide
Function: used for genetic material, which codes for traits
ie: DNA, RNA [ "Nucleic Acid" starts with "N" and "A" DNA and RNA end with "NA"], ATP
Homeostasis - Answer regulation of conditions {like pH or temperature} within a cell that
allow for internal equilibrium {balance}
Energy Conversion - Answer In plants: through photosynthesis, radiant energy from the sun
is converted into a glucose, which provides chemical energy for the plant
, Synthesis of new Molecules - Answer Cells can create new molecules from simpler
molecules, like when proteins are made from amino acids
Transport of Molecules - Answer molecules move across cell membrane [active transport
needs ATP {energy} while passive transport doesn't need any]
Osmosis - Answer movement of water across membrane
Hypotonic - Answer Moves away from
If cell is hypotonic it shirnks b/c water moves out
If solution is hypotonic cell will grow b/c water is moving towards the one w/ more solutes
[something dissolved in solution]
Hypertonic - Answer Moves too [think of someone hyper. They have a lot of energy and
hypertonic has a lot of solutes]
If cell is hypertonic it swells b/c water move inside {it can eventually become lysed [explode]}
If solution is hypertonic cell will shrink b/c water is moving to solution
Isotonic - Answer equal movement of water in and out of cell b/c both solution and cell have
same amount of solutes
Virues - Answer tiny, non-living structure that depends on host cell for reproduction. Can not
be treated w/ antibiotics b/c antibiotics can only treat living things like bacteria
ie: HIV and influenza
similarity and differences between viruses and cells structure - Answer virus- head has
nucleic acids {DNA/RNA} that is surrounded by protein coat called a capsid
cell- has nucleic acids, cell mem., ribosomes, cytoplasm, ect.
Questions All Solved Correctly 2025-
2026 Updated.
Carbohydrates - Answer Made up of: CHO [Carbon, Hydrogen, Oxygen]
{remember energy ones are CHO}
Monomer: Simple sugar
Function: main source of energy, especially short-term energy
ie: glucose {C6H12O6}, starch, cellulose, and glycogen
Lipids - Answer Made up of: CHO [Carbon, Hydrogen, Oxygen]
{remember energy ones are CHO}
Monomer: Triglyceride
Function: used for long-term energy storage
ie: fats, oils, waxes
Proteins - Answer Made up of: CHON{S}
Monomer: Amino Acid
Function: antibodies, muscle movement, enzymes, hormones, structure, and transport
ie: enzymes and cell structure
Nucleic Acid - Answer Made up of: CHONP [Nucleic acid is the longer word so it has longer
"made up of" acronym]
Monomer: Nucleotide
Function: used for genetic material, which codes for traits
ie: DNA, RNA [ "Nucleic Acid" starts with "N" and "A" DNA and RNA end with "NA"], ATP
Homeostasis - Answer regulation of conditions {like pH or temperature} within a cell that
allow for internal equilibrium {balance}
Energy Conversion - Answer In plants: through photosynthesis, radiant energy from the sun
is converted into a glucose, which provides chemical energy for the plant
, Synthesis of new Molecules - Answer Cells can create new molecules from simpler
molecules, like when proteins are made from amino acids
Transport of Molecules - Answer molecules move across cell membrane [active transport
needs ATP {energy} while passive transport doesn't need any]
Osmosis - Answer movement of water across membrane
Hypotonic - Answer Moves away from
If cell is hypotonic it shirnks b/c water moves out
If solution is hypotonic cell will grow b/c water is moving towards the one w/ more solutes
[something dissolved in solution]
Hypertonic - Answer Moves too [think of someone hyper. They have a lot of energy and
hypertonic has a lot of solutes]
If cell is hypertonic it swells b/c water move inside {it can eventually become lysed [explode]}
If solution is hypertonic cell will shrink b/c water is moving to solution
Isotonic - Answer equal movement of water in and out of cell b/c both solution and cell have
same amount of solutes
Virues - Answer tiny, non-living structure that depends on host cell for reproduction. Can not
be treated w/ antibiotics b/c antibiotics can only treat living things like bacteria
ie: HIV and influenza
similarity and differences between viruses and cells structure - Answer virus- head has
nucleic acids {DNA/RNA} that is surrounded by protein coat called a capsid
cell- has nucleic acids, cell mem., ribosomes, cytoplasm, ect.
