Marine Biology Flashcards
In which four characteristics does the sea differ from the athmosphere?
- density (>800times)
- dissolves stuff
- light absorbance
- heat capacity
Which two ways are there to cope with salt?
- osmoconformers
- osmoregulatators
Which two ways are there to cope with temperature?
- ectotherm (plus 10°, metabolism speeds up 2x)
- endotherm
In which way differ animals and plants living in the water from outside?
- more protein, less carbs
- rapid growing, less energy storage
- less structural material & easy to move against gravity
How many times faster travels sound in water?
4x
3 characteristics of a species
- common characteristics
- breed with each other
- reproductively isolated from other species
5 major kingdoms?
- animals
- plants
- fungi
- protista
- monera
Define Detritus-Bacterial Complex:
© Detritus: non-living particulate organic material (as opposed to dissolved organic material)
© Bacteria can degrade most naturally produced organic compounds
© Bacteria: Remineralisation – they convert material tied up in detritus back into living biomass ® support further primary production
© support range of “detritivores”: are heterotrophs that obtain nutrients by consuming detritus
Sprüchlien Kindom
King Philipp Comes Over for Great Sex
Kingdom
Phylum
Class
Order
Genus
Species
What are Protista?
Protisten sind eine Gruppe nicht näher verwandter mikroskopischer Lebewesen, die jedoch lange als Taxon (systematische Einheit) betrachtet wurde.
Dazu gehören alle ein- bis wenigzelligen Eukaryoten, also Algen,Protozoen und einige Pilze.
In the lecture, we differentiated between unicellular and multicellular Protista
Which are the two major groups of single-celled photosynthectic protists?
Diatoms
&
Dinoflagellates
Diatoms:
- phylum
- 3 characteristics
- phylum: Bacillariophyta
-
3 characteristics:
1. mostly planktonic
2. autotrophic
3. silica shell - (less digestable, oil droplets & tiny perforations, photosynthesis through shell)*
Dinoflagellates:
- phylum
- 4 characteristics
- Name the largest group
- red tide: which toxin?
- phylum: Dinophyta
-
4 characteristics
1. two uneven flagellae
2. cellulose cell wall
3. photosynthesise & ingest material
4. hosted by sponges, sea anemones, giant clams & corals
Name the largest group: Zooxanthellae
most common saxitoxin producer causing paralytic shellfish poisoning (red tides)
Name the three categories of algae
- category
- phylum
- pigment
1. green algae
phylum Chlorophyta
chlorophyll a + b
2. brown algae
phylum Phaeophyta
fucoxanthins (yellow) + chlorophyll
3. red algae
phylum Rodophyta
phycobilins + chlorophyll
Structure Algae:
Name the different parts of the algae
Reproduction of Algae
Asexual (by fragments)
+
Sexual
Algins: which category of algae
brown algae
Alginsäure, auch Algin, wird von Braunalgen und von einigen Bakterien (z. B. Azotobacter) gebildet. In der Alge stellt es das strukturgebende Element der Zellwände dar. Die interzelluläre Gelmatrix verleiht der Alge sowohl Flexibilität als auch Festigkeit. Algin ist u. A. ein Nebenprodukt bei der Gewinnung von Iod aus Meeresalgen im Nassverfahren. Es wird allerdings auch direkt für die Verwendung in der Lebensmittel-, sowie der Pharma-, und Kosmetikindustrie aus den Braunalgen extrahiert. Die Salze der Alginsäure werden allgemein als Alginate bezeichnet. Alginat findet vor allem als Verdickungs- oder Geliermittel Verwendung.