A change in DNA that can introduce variation
mutation
In which part of a leaf cell does photosynthesis take place?
chloroplast
Variations in traits, such as the fur color of rabbits, may be caused by
sexual reproduction
Which process occurs during the growth and development of a fertilized human egg?
cell division
Which cell structure is found in plant cells, but not in animal cells? cell wall, cell membrane , nucleus or cytoplasm
cell wall
A diagram used to predict the outcome of a genetic cross.
Punnett Square
When a person chews food, the teeth grind the food into smaller pieces. This is an example of
mechanical digestion
Controls what enters and exits the cell.
cell membrane
Competition within a pack of wolves may increase if there is an increase in the
size of the population
A group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding.
species
A group of tissues that work together to perform a specific function is called
an organ
The human respiratory system is responsible for removing
carbon dioxide from blood
Produces energy (ATP) from food.
Mitochondria
The surrounding conditions in which an organism lives and interacts.
environment
What kinds of organisms in a food web can decompose and recycle wastes?
Bacteria or Fungi
Abnormal cell division results in
Cancer
The carbohydrates, proteins, and minerals that are vital to an organism's survival are found in
food
Differences in DNA among individuals within a species.
Genetic Variation
A molecule that carries genetic information.
DNA
In order to perform photosynthesis , a leaf must absorb sunlight, water and take in
carbon dioxide
A segment of DNA that codes for a trait.
gene
Variations in traits, such as the fur color of rabbits, may be caused by
sexual reproduction
Site of protein synthesis.
Ribosome
The process of cell division.
Mitosis
The combination of alleles.
genotype
Stores water and nutrients in plant cells.
Vacuole
breaks down dead organisms.
decomposer
Chromosomes location
nucleus
The fur on an artic polar bear appears white all year. The color of the fur is an example of
an adaptation helping an organism to survive
Which cell structure do nutrients pass through to enter a cell?
cell membrane
The genetic transmission of characteristics from parents to their offspring.
inheritance
Directs cell activities and contains DNA.
Nucleus
A helpful trait that improves survival.
adaptation
The group that does receive the treatment is the experimental group.
experimental group
An organism's physical traits.
phenotype
Scientists record their observations and measurements as data.
data
The biological process by which new individual organisms are produced.
reproduction
During the process of photosynthesis, green plants produce
sugar/glucose or oxygen
The hereditary material in corn plants can be altered by scientists so the plants produce more corn. Which term identifies this process?
genetic engineering
Which 3 body systems work together to produce locomotion?
skeletal, muscular and nervous systems
Which type of organism converts wastes and dead materials into nutrients that can be used by plants?
decomposer
The process whereby organisms better adapted to their environment tend to survive and produce more offspring.
natural selection
A cell's chromosomes contain
genes
A cactus plant, a snake, and a hawk can be members of the same
Community
Characteristics or features of an organism that can be inherited
traits
Which gas is used by humans in the process of cellular respiration?
oxygen
A controlled experiment includes only one variable tested at a time.
controlled experiment
The history of an organism's relatives and lineage.
ancestry
makes its own food and begins the food chain.
producer
When food is being mechanically digested, it is being
made smaller in size
Converts sunlight into energy in plant cells.
Chloroplast
A process that helps plants make food from sunlight.
Photosynthesis
In an experiment testing the effect of fertilizer on plant growth, the independent variable is the amount of fertilizer used.
independent variable
A group of living and non-living things in a shared environment.
ecosystem
The group that does not receive the treatment is the control group.
control group
The dependent variable is what is measured or observed, such as the plant's growth.
dependent variable
The ability of a species to continue to exist over time in a changing environment.
survival
Which cell structure is found in plant cells, but not in animal cells?
cell wall or chlorplasts
All of the plants and animals living in the same area make up a
Community
Importance of genetic variation
helps species adapt to changing environments.
This change in plant types over time is an example of
ecological succession
Traits passed from parent to offspring.
inherited
The variety of life in an ecosystem.
biodiversity
Maintains a stable internal environment.
Homeostasis
The change in species over time.
evolution