Evolution
what is an embryo?
an organism in its early stage of development
What are ecosystems?
All the living and non-living things that interect in an area.
What is a monomer?
The building block of polymers
What is homeostasis?
The process by which organisms maintain a relatively stable internal environment.
What are the building blocks for all living things?
cells
What are homologous structures?
structures that have different mature forms in different organisms but develop from the same embryonic tissues.
What are biotic factors?
Living things in an ecosystem.
What are enzymes?
specialized macromolecules that speed up chemical reactions.
What does homeostasis involve ?
control systems that keep your internal environment roughly constant with certain limits
Do all cells contain all the chromosomes (DNA) needed for an organism?
yes
What is speciation?
formation of new species.
What are abiotic factors?
Non-living factors.
What are carbohydrates?
polymers of sugars; includes polysaccharides.
Why is it vital to keep your internal evironment constant?
to keep cells functioning normally and to prevent damage
Who hand drew pictures of cells in 1880?
Eduard Strasburger
What is fitness?
ability of an organism to survive and reproduce in its environment.
What are organisms?
Any living thing.
What is a phospholipid?
lipid that makes up cell membranes
What are the three key things that are important to maintain?
temperature ph and glucose
All present day cells have apparently evolved from what?
ancestor cells.
What are variations?
ability of an organism to survive and reproduce in its environment.
What are herbivores?
Consumers that eat only plants.
What is glycerol?
alcohol with three carbons
What is the optimum PH?
usually 7
What are the two types of cells?
Prokaryotes and Eukaryotes