1 - Characteristics and Classification of Living Organisms Flashcards
Are animals multicellular?
Yes
Are plants multicellular?
Yes
Are fungi multicellular?
Sometimes
Are protoctists/protista multicellular?
Depends, usually no
Are prokaryotes multicellular?
No
Do animal cells have nuclei
Yes (but not red blood cells) - 1 per cell
Do plant cells have nuclei?
Yes, 1 per cell
Do fungi have nuclei?
Yes…lots and lots of nuclei…
Do protoctist/Protista cells have nuclei?
Yes
Do prokaryotes have nuclei?
No
Do animal cells have cell walls?
No
Do plant cells have cell walls?
Yes - they’re made of cellulose
Do fungi have cell walls?
Yes, and they’re made of chitin (and glucans and glucapeptein? idk so just remember chitin)
Do protoctists have cell walls?
Sometimes
Do prokaryotes have cell walls?
Yes, and they’re made of peptidoglycan (think pep-tea-dog-lichen)
Do animals have chloroplasts?
No
Do plants have chloroplasts?
Yes
Do fungi have chloroplasts?
No
Do protoctists have chloroplasts?
Sometimes
Do prokaryotes have chloroplasts
No
Animal feeding habits
Heterotrophic - eat other stuff
Plant feeding habits
Autotrophic (makes its own food) - photosynthesis
Fungi feeding habits
Saprotrophic (digest then ingest), sometimes heterotrophic
Protoctist feeding habits
Sometimes heterotrophic, sometimes autotrophic
Prokaryote feeding habits
Heterotrophic or autotrophic
Amoebas are…
Protoctists
Bacteria are…
Prokaryotes
Mammal blood temp
Warm
Mammal skin topping
Hair/fur
Reproduction style of mammal
Baby grows inside body - live birth
Mammal breathing style
Through nose and mouth with lungs
Common feature of mammals
Make milk
Fish blood temp
Cold
Fish skin topping
Scales
Fish reproduction
Lay eggs
Fish breathing
Gills
Reptile blood temp
Cold
Reptile skin topping
Scales or scutes
Reptile reproduction
Eggs
Reptile breathing
Lungs
Reptile common feature
Dry skin
Amphibian blood temp
Cold
Amphibian skin topping
Mucus
Amphibian reproduction
Eggs
Amphibian breathing
Lungs, skin
Common feature of amphibian
Complex life cycle - born in water adult on land
Bird blood temperature
Warm
Bird skin topping
Feathers
Bird Reproduction
Eggs
Bird breathing
Lungs
Bird common feature
Beak
Arachnid legs
8 legs - 4 pairs, attached to abdomen
Arachnid body segments
2
Arachnid antennae (pairs)
0
Arachnid eyes (number and type)
8, simple
Arachnid wings
Nonexistent
Arachnid other stuff
Pincers
Insect legs
6 - 3 pairs, attached to the thorax
Insect segments
3
Insect pairs of antennae
1
Insect eyes (number and type)
2 compound
Insect wings
2 pairs
Myriapod legs
<10 - 750
1 jointed pair per segment
M in MRS. GREN
Movement - consciously changing position from one place to another
R in MRS. GREN (first one)
Respiration - metabolic reaction to produce glucose
S in MRS. GREN
Sensitivity - The ability to detect stimuli in the internal or external environment and make appropriate responses
G in MRS. GREN
Growth - Permanent increase in dry mass by an increase in cell number/size
R (second one) in MRS. GREN
Reproduction - process to make more of the same kind of organism
E in MRS. GREN
Excretion - The removal of waste products of metabolism
N in MRS. GREN
Nutrition - Absorption or ingestion of materials for energy, growth, and development - animals need organic compounds, ions, and usually water, while plants need nitrates, phosphates, magnesium potassium, sunlight, and CO2
System of calling organisms by their genus and species
Binomial System
Classification
A system that groups organisms that have shared features together - demonstrates how it has evolved and changed over time
Levels of classification pyramid
Kingdom, Phylum, Class, Order, Family, Genus, Species
Organisms are sorted into different categories according to their _____ characteristics
Shared
Species
A group of similar organisms that can interbreed and make fertile babies - about 99.999% of DNA is shared
Genus
A group of similar organisms capable of interbreeding to make infertile babies
Dichotomous key
A sequence of paired questions that can be used to identify organisms - designed around visible features
Common ancestors of different species can be found through
Evolutionary relationships
DNA sequencing
The sequences of the bases within DNA can identify close sequences between different species - similar base DNA = close relationship. It’s powerful as it doesn’t rely on visual features.
Common features of arthropods
No backbone, jointed legs, segmented bodies, exoskeleton
Viruses aren’t considered living organisms because
They aren’t made up of cells and don’t do the Mrs. Gren stuff