Biomolecules
This biomolecule provides quick energy for cells.
carbohydrates
Viruses cannot reproduce without this.
host cell
This organelle controls the activities of the cell and contains DNA.
nucleus
Enzymes are a type of this biomolecule.
proteins
This plant structure transports water from roots to leaves.
xylem
This biomolecule is used for long-term energy storage and insulation.
lipids
Unlike cells, viruses are considered nonliving because they lack this ability.
ability to carry out life processes independently
This structure controls what enters and leaves the cell.
cell membrane
The substance an enzyme acts on is called this.
substrate
The digestive system works with this system to transport nutrients throughout the body.
circulatory system
DNA and RNA belong to this group of biomolecules.
nucleic acids
A virus enters a cell, copies its genetic material, and causes the cell to burst. This describes this viral cycle.
lytic cycle
Plant cells contain this organelle that performs photosynthesis.
chloroplast
Increasing temperature generally increases enzyme activity until the enzyme reaches this point.
optimum temperature
The respiratory system provides oxygen that cells use in this cellular process to release energy.
cellular respiration
A molecule with many amino acids linked together is called this type of biomolecule.
protein
Viruses can spread rapidly because they use the host cell’s structures to do this.
replicate or produce more viruses
Prokaryotic cells differ from eukaryotic cells because they lack this membrane-bound structure.
nucleus
Extremely high temperatures can cause enzymes to lose their shape and stop functioning. This process is called this.
denaturation
If the roots of a plant are damaged, the plant may wilt because water transport through this system is disrupted.
transport system (xylem)
A mutation changes the sequence of amino acids in a protein. This will most likely affect the protein’s ability to do this.
perform its function
Antibiotics are effective against bacteria but not viruses because viruses do not have this cellular structure targeted by antibiotics.
cell wall, ribosomes, or metabolism
A cell requires large amounts of energy to function. An increase in the number of these organelles would best support that need.
mitochondria
If the pH of an environment changes drastically, enzyme activity will decrease because the enzyme’s shape changes. This demonstrates that enzyme function depends on this.
structure or shape
During exercise, the respiratory system increases oxygen intake while the circulatory system increases heart rate. These systems work together to maintain this internal condition.
homeostasis