1.1: Review and Overview

Question 1

what are the two main cell types and their features

Answer 1

prokaryotic: eubacteria and archaea, single celled, lack nucleus and organelles
eukaryotic: plants and fungi and animals and humans, single celled or multicellular, have nuclei and organelles

Question 2

in a prokaryotic cell how is dna stored

Answer 2

in a compact structure called the nucleoid

Question 3

describe the plasma membrane in a prokaryotic cell

Answer 3

semi permeable

Question 4

what is the function of a cell wall in a prokaryotic cell

Answer 4

protective, tough, outercoat

Question 5

is the cell wall in all prokaryotes
is the flagellum in all prokaryotes

Answer 5

no and no

Question 6

what is the purpose of ribomes (in the cytosol) in prokaryotes

Answer 6

for protein synthesis

Question 7

what is the microbiome

Answer 7

the combined genomes of a microbiota - sometimes scientists ill use microbiome and microbiota interchangebly

Question 8

number q!
1. up to ____x more microbial genes in human genes in the human body
2. what is the ratio cells in microbial:human

Answer 8

1. 200
2. 1:1

Question 9

what is our microbiota, what does it include, where do they reside

Answer 9

microbiota: organisms of a particular site (of a habitat, sometimes geological period)
includes: bacteria, archaea, fungi, protists, viruses
resides: skin, lungs, mouth, GI tract etc