Diversity of Life Chapter 1
The process by which unrelated organisms evolve characteristics that are similar.
What is convergent evolution?
A substance introduced in the body to help produce chemicals that destroy specific viruses.
What is a vaccine?
The widely accepted explanation of the relationship between cells and living things?
What is the cell theory?
The main pigment for photosynthesis in chloroplasts.
What is chlorophyll?
The scientific study of heredity.
What are genetics?
The mistaken idea that living things can arise from nonliving sources
What is spontanous generation?
A flexible rod that supports a chordate’s back.
What is a notocord?
~ cells are the basic units of structure and function in living things
~ all cells are produced from other cells
What does the cell theory state?
The process by which cells obtain energy from glucose.
What is cellular respiration?
An organism that has two different alleles.
What is heterozygous?
The combination of chemical reactions through which an organism builds up or breaks down materials
What is metabolism?
When one cell divides to form two identical cells.
What is binary fision?
Small grain-shaped organelles that produce proteins.
What are ribosomes?
The cell’s nucleus divides into two new nuclei and one set of DNA is distributed into each daughter cell.
What happens during mitosis?
An organisms physical appearence.
What are phenotypes?
Unicellular organisms whose cells lack a nucleus.
What are prokaryotes?
Invertebrates that have stinging cells and take food into a central body cavity.
What are cnidarians?
Compounds that are made mostly of carbon and hydrogen and some oxygen.
What are lipids?
The final stage of the cell cycle
What is cytokinesis?
these animals absorb heat from their environment
What are ectothermic animals?
Placing organisms in groups based on their observable features giving each organism unique, two-part scientific name.
What is binomial nomenclature?
What are mammary glands?
The diffusion of water molecules across a selectively permeable membrane.
What is osmosis?
Movement of specific molecules across cell membranes through protein channels
What is facilitated diffusion?
Different forms of genes.
What are alleles?