Cell Parts
What do cell organelles do?
They have a specific job/function in the cell.
What does a eukaryotic cell have that prokaryotic cell does not have?
A nucleus.
What is evolution?
Change in species over time
True Or False. Scientists find fossils in whole segments, fully intact.
False.
What is the genetic makeup of an organism called?
An allele
This part of the cell lets materials and molecules into and out of the cell.
Cell membrane.
What part does a plant cell that an animal cell does not have?
A cell wall/chloroplast.
What are traits?
Physical and behavioral characteristics
How do traits help organisms survive?
They help organisms adapt to their environment
What is the process by which organisms produce offspring that are genetically identical to themselves?
Asexual reproduction
What is the cytoplasm in the cell?
A jelly-like substance that fills the cell
True or false. Animal cells are more flexible than plant cells.
What is true?
What is natural selection?
Survival of organisms best adapted to their environment
Where does most of the evidence come from for understanding evolution?
Fossil record.
What is the name of the term describes the physical appearance or observable characteristics of an organism?
Phenotype
What cell part makes proteins in a cell?
Ribosomes.
What do ribosomes do in cells?
Make proteins.
How is heredity passed from parents to offspring?
Through DNA
What are the two types of exitnction discussed in our unit?
Background and normal extinction
What are the thread-like structures made of DNA that carry genetic information called?
Chromosomes.
What is the job of the nucleus in a cell?
To store genetic material and control cell activities
What is the name of the kingdom of mushrooms?
Fungi
What can lead to extinction?
Multiple factors including environmental changes and human activity
How do animals and fungi obtain food?
They must obtain food from other sources and eat it to get energy.
Which allele only shows its effect when an organism has two copies of it?
A recessive trait/allele.