Cell Theory & Cell Types
What scientific idea states that all living things are made of cells?
This is the cell theory.
What level of organization is made of similar cells working together?
This is tissue.
Why should scientists repeat experiments even if no mistakes were made?
To ensure results are accurate.
What molecule stores genetic information?
DNA.
What term describes the physical appearance of a trait?
phenotype.
What type of cell lacks a nucleus and membrane-bound organelles?
prokaryotic cell.
What happens when cells within an organ die but the organ still needs to function?
Remaining cells divide to replace the lost cells.
What word describes the ability to reproduce experimental results?
replication.
Where are genes located in a cell?
On chromosomes.
What term describes an organism’s genetic makeup?
genotype.
What do eukaryotic and prokaryotic cells have in common according to cell theory?
Both are single cells that carry out life functions.
What term describes maintaining stable internal conditions in the body?
homeostasis.
If repeated experiments give different results, what should scientists do next?
Conduct further experimentation.
What is a gene?
A segment of DNA that codes for proteins and traits.
If black fur is dominant and a rabbit has Bb, what color is it?
Black.
Which statement is NOT part of modern cell theory: all cells come from existing cells, cells are basic units of life, or only cells with mitochondria can reproduce?
Only cells with mitochondria can reproduce.
Which level of organization is made of multiple organs working together?
This is an organ system.
Why is peer review important before scientific findings are published?
It checks for bias, errors, and lack of evidence.
Where are chromosomes found in animal cells?
Inside the nucleus.
What percent of offspring would show a dominant trait if both parents are homozygous dominant?
100%
What level of organization comes directly after cells?
This is tissues.
Why is cell division important for maintaining homeostasis?
t replaces damaged or dead cells.
What would NOT prevent a scientific finding from being published?
Challenging an accepted scientific theory.
How are inherited traits passed from parents to children?
Through genes passed from parents.
Which cross produces the most heterozygous offspring: AA × aa or Aa × Aa?
AA × aa