GMED1000 Lecture Notes - Lecture 3: Simple Cell, Motility, Peptidoglycan
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1.This week, you will be conducting Gram stains of bacteria.Which of the following statements are true? (Mark all thatapply)
Gram-negative bacteria do not stain purple because they do nottake-up crystal violet or iodine | ||
The peptidoglycan in the walls of Gram-positive bacteria bindsto the crystal violet stain more easily than walls of Gram-negativebacteria do | ||
Gram-positive bacteria have cell walls with a thickerpeptidoglycan layer than walls of Gram-negative bacteria | ||
Gram-negative bacteria do not stain purple, because their cellwall structure allows purple-colored iodine-dye complexes to washout of the cells more easily than the cell wall structure ofGram-positive bacteria does | ||
Gram-negative bacteria have an outer membrane (outside thepeptidoglycan layer in their wall) that Gram-positive bacterialack |
2.
What evidence is used to inform our understanding ofrelationships among species? (mark all that apply)
Biochemical similarities between existing species | ||
Fossils | ||
Morphological similarities between existing species (presence ofhair, backbones, etc.) | ||
DNA sequences and molecular clocks |
3.
For each of the groups of organisms below, indicate whether theybelong in (A.) Archaea, (B.) Bacteria, or (C.) Eukarya
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4.
Select all true statements about the relative diversity ofdifferent groups of organisms from among the followingstatements:
There are more species of plants on Earth than species ofmolluscs | ||
There are more plant species on Earth than mammal species | ||
There are more species of plants on Earth than species offungi | ||
There are more species of fungi on Earth than mammal species | ||
There are more species of plants on Earth than species ofarthropods | ||
There are more flatworm species on Earth than mammal species |
i need help with this homwork please choose the correct answers and just be claer to read and understand for the slect the apply qusestions too and it is important i realy need the right answers so please be claer not write randomly i really need the correct answers to study for my test so hop you can help me
Question 1
What is the smallest cell you could find?
Mycoplasma |
Archaea |
Bacteria |
Cyanobacteria |
Question 2
TEMs appear as 3D images
True |
False |
Question 3
Bacteria are what cell type? Write one word as the answer in lowercase and using no syntax.
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Question 42 pts
ALL eukaryotic cells have which of the following. Click all that apply.
nucleoid |
cell membrane |
chloroplasts |
nucleus |
membrane enclosed cell organelles |
mitochondria |
Question 5
Prokaryotes and eukaryotes both have which if the following cellular components. Click all that apply.
ribosomes |
plasma membrane |
DNA |
nucleoid |
Question 6
I am made of one 60s and one 40s subunit, which organelle am I?
protein |
lipid |
bacterial ribosome Question 9 The difference between the rough and smooth ER is
Question 10 The site where many lipids, including cell membrane is produced.
Question 11 Name the organelle: In muscle cells in particular, I would increase in number and size in response to frequent exercise
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Question 12 In animal cells, glucose would be mobilized from its storage molecule (glycogen) in this part of the cell.
Question 13 Which of these is associated with the rough ER
Question 14 Which organelle sorts, modifies and stores substances produced on the rough ER. Write two words as the answer in lower case separated by a space. Question 15 Which organelle is responsible for ATP production. Write one word in the singular as the answer. Question 16 You inherit all of your mitochondria from your
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Question 27
What accounts for 40% of the protein in our bodies?
Fibers |
Cells |
Collagen |
Keratin |
Question 28
Animal cells have cell walls
True |
false |