This cellular structure controls the movement of matter into and out of the cell
Cell Membrane
This basic unit represents the least complex level of biological organization.
cell
This body system works closely with the muscular system to send signals to enable movement.
Nervous
This is the critical first biological step in information processing in an organism.
Sensory receptor detects stimulus
Known as the "powerhouse", this organelle converts stored energy into a usable form for the cell.
This level of organization is defined as a group of similar cells working together to perform a specific function.
tissue
This critical body system is primarily responsible for bringing essential oxygen into the body through lungs.
Respiratory
The fossil record can show us...
if a species became extinct or if it changed and diverisified
This structure captures energy from sunlight and converts it into stored chemical energy.
Chloroplast
Directly preceding an organ system in complexity, this is a group of different tissues working together (e.g., the stomach).
This system coordinates with the respiratory and digestive systems to deliver oxygen and nutrients throughout the body.
Circulatory
An advantageous genetic trait (like a stronger jaw for eating coral) makes organisms more likely to do these two things over time.
survive and reproduce
This structure provides support for the cell.
Cell Wall
A group of similar tissues working together
organ
This system is mainly responsible for carrying sensory signals to the brain and controlling quick responses.
Nervous
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These two organelles are not present in animal cells, but are present in plant cells.
Cell wall and Chloroplast
cell, tissue, organ, organ system, organism
This is the critical first biological step in information processing in an organism.
Sensory receptors detect stimulus
Shared embryonic characteristics—like gill slits and tails found in frog, turtle, rabbit, and pig embryos—suggest this about the evolutionary history of vertebrates.
Common ancestory