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Bio 102 Exam 3 Vocab 1
N/A
39
Biology
Undergraduate 1
04/02/2012

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Term
Eukaryota
Definition
The domain that includes all eukaryotic cells. These cells are cells with a membrane-enclosed nucleus as well as other membrane-bound organelles.
Term
Clade
Definition
a group of species that includes an ancestral species and all of its descendants
Term
Phylogeny
Definition
the evolutionary history of a species or group of species
Term
Paraphylectic
Definition
pertaining to a group of taxa that consists of a common ancestor and some descendants
Term
Monophylectic
Definition
pertaining to a group of taxa that consists of a common ancestor and all of its descendants
Term
Excavata
Definition
One of five supergroups of eukaryotes. They have a unique cytoskeletal features, and some have an "excavated" feeding groove.
Term
Chromalveolata
Definition
One of five supergroups of eukaryotes. They originated by secondary endosymbiosis.
Term
Rhizaria
Definition
One of five supergroups of eukaryotes.They have pseudopodia, which are extensions that aid movement and capture of prey.
Term
Unikonta
Definition
One of five supergroups of eukaryotes. This group consists of amoebas with lobe or tube shaped pseudopodia.
Term
Endosymbiosis (primary vs. secondary)
Definition
Endosymbiosis is a process in which a unicellular organism (host) engulfs another cell, which ultimately becomes an organelle in the host cell.
primary: eukaryote -> prokaryote
secondary eukaryote -> eukaryote which has undergone primary endosymbiosis
Term
Nucleomorph
Definition
eukaryotic nuclei found in certain cells
Term
Diplomonads (Giardia)
Definition
A protist that has modified mitochondria, two equal sized nuclei, and multiple flagella.
Term
Parabasalids (Trichomonas)
Definition
A protist with modified mitochondria.
Term
Archaeplastida
Definition
One of five supergroups of eukaryotes. This group originated from an ancient protist that englufed a cyanobacterium. Includes red and green algae.
Term
Microsporidia (microspore)
Definition
A spore from a heterosporous plant that develops into a male gametophyte.
Term
Vector
Definition
An organism that transmits pathogens from one host to another.
Term
Phagocytosis
Definition
Endocytosis in which large substances, or small organisms are taken up by a cell.
Term
Slime mold (plasmodial vs. cellular)
Definition
Term
Thylakoid
Definition
A flattened membranous sac inside a chloroplast.They convert light energy to chemical energy.
Term
Dinoflagellate
Definition
A member of group chromalveolata. Has two flagella.
Term
Heterotrophic
Definition
An organism that obtains food by eating other organisms.
Term
Autotrophic
Definition
An organism that obtains energy by photosynthesis.
Term
Mixotrophic
Definition
An organism capable of photosynthesis and heterotrophy.
Term
Zooxanthellae
Definition
endosymbionts, including diatoms and other dinoflagellates
Term
Ciliates
Definition
Chromalveolata group. Characterized by hair-like organelles called cilia.
Term
Euglenids
Definition
Excavata group.They are green and move around using one flagella.
Term
Chlorophylls a, b, and c
Definition
A is used in oxygenic photosynthesis. B is more soluble than A, due to the carbonyl group. C?
Term
Phycobilins
Definition
Light capturing molecultes, found in cyanobacteria.
Term
Sporopollenin
Definition
A component of the tough outer shell of a spore.
Term
Rhodophyta
Definition
Red algae
Term
Coralline red algae
Definition
a form of red algae. Its known for the calcareous deposits in the cell walls, making its exterior tough.
Term
Stramenopiles
Definition
Under the group Chromalveolata. Includes most algae.
Term
Diatoms
Definition
Part of chromalveolata group. These cells have a silica cell wall.
Term
Oomycetes
Definition
In group chromalveolata. They have the ability to act as a heterotroph and aid decay. They can also act as an infectious pathogen.
Term
Phytophthora infestans
Definition
These oomycetes take part in destryoing plant life, especially potatoes and tomatoes. This is an example of their chemoheterotrophic form.
Term
Brown algae
Definition
In the group Chromalveolata.
Term
Intertidal
Definition
The shallow zone of the ocean adjacent to land and between the high-low tide zones.
Term
Subtidal
Definition
Close to shore. This zone is only exposed during briefly during low tide.
Term
Basal meristem
Definition
meristem is tissue in plants consisting of cells in areas of the plant where growth can take place.
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