Introduction I Flashcards
Microorganisms
cellular organisms that are relatively simple in their construction and lack highly differentiated cells and distinct tissues
Prokaryotic cells lack a true ___ nucleus
membrane delimited
Eukaryotic cells have ___ nucleus, are (more/less) complex and are usually (smaller/larger) than prokaryotic cells
membrane-enclosed
more
larger
Microbiology is the study of ___ and ___
microorganisms
acellular biological entities too small to be seen by the unaided eye
1mm = \_\_\_m 1micrometer = \_\_\_m
10-3
10-6
Fungi and Protist are considered ___
Bacteria and Archaea are considered ___
eukaryote
prokaryote
The phylogenetic tree of life contains (#) domains and they are:
3
Archaea
Bacteria
Eukarya
The classifications of the phylogenetic tree of life are based off of ___
genomic sequences (RNA)
The three steps of the central dogma of molecular biology
DNA replication
RNA (polymerase)
Protein (Ribosome)
For each organism there are many ___ and ___ but only one ___
transcriptomes and proteomes
genome
When we classify organisms we want to choose a gene that is present in all organisms so we use ___
RNA (which is used to make proteins)
Classification schemes can tells us ___ between organisms but not ___
relatedness and evolutionary history
when they diverged
Why are viruses not included in the three domain system?
Because the domains are only for cellular organisms
(Y/N) Does the phylogenic tree provide the absolute time of organism divergence?
No
Revolutionary relatedness is not the same as the ___
diverged time
