The Cell
The gel-like fluid that fills the cell and surrounds the organelles.
What is cytoplasm?
The molecule that carries genetic information in living organisms
What is DNA?
This scientist is credited with developing the theory of natural selection
Who is Charles Darwin?
An organism that makes its own food through photosynthesis is called this
What is a producer (or autotroph)?
This organ pumps blood throughout the body
What is the heart?
This organelle is responsible for producing proteins
What is the ribosome?
These are the four nitrogen bases found in DNA
What are adenine, thymine, guanine, and cytosine?
Individuals with traits better suited to their environment are more likely to survive and reproduce. This is called this.
What is natural selection?
The sequence showing how energy passes from one organism to another is called this.
What is a food chain?
The basic structural and functional unit of the nervous system
What is a neuron?
The process by which cells divide to produce two identical daughter cells
What is mitosis?
A trait that is hidden when a dominant allele is present
What is a recessive trait?
The variety of life on Earth, from genes to ecosystems, is called this
What is biodiversity?
A relationship where both organisms benefit is called this
What is mutualism?
This system is responsible for gas exchange, taking in oxygen and releasing carbon dioxide
What is the respiratory system?
This organelle controls what enters and exits the cell
What is the cell membrane?
This diagram is used to predict the probability of offspring inheriting certain traits
What is a Punnett square?
Body parts that share a common origin but may have different functions, like a human arm and a whale flipper, are called these
What are homologous structures?
All the populations of different species living in the same area make up this
What is a community?
Enzymes produced in the pancreas help break down food in this part of the digestive system
What is the small intestine?
Unlike animal cells, plant cells have this rigid outer layer for structure and support
What is the cell wall?
A permanent change in the sequence of DNA is called this.
What is a mutation?
The formation of a new species over time as populations become reproductively isolated is called this
What is speciation?
The process by which nitrogen is converted into a form usable by plants is called this
What is nitrogen fixation?
This part of the immune system produces antibodies in response to a foreign antigen
What are B cells (or B lymphocytes)?