Biology Standard 10d
Work in Progress
Anticipation Guide: Biology Standard 10 d
(differences between bacteria and viruses)
Instructions:
Before the lesson, read the questions and circle T or F in the left hand column.
After lesson, re-read the question and circle T or F in the right hand column.
#
Before
1
2
3
4
5
6
T/F
T/F
T/F
T/F
T/F
T/F
7
T/F
8
9
T/F
T/F
Questions
Viruses are simple cells.
Bacteria are eukaryotic cells.
Viruses and bacteria have DNA
Viruses are alive.
Viral infections can be cured with antibiotics.
Viruses and bacteria are pathogens.
Viruses are sub-microscopic and smaller than
bacteria.
Viral infections are curable.
Viruses and bacteria can kill you.
After
T/F
T/F
T/F
T/F
T/F
T/F
T/F
T/F
T/F
Viruses
Bacteria
No metabolism
Have metabolism
No growth
Have growth
Needs host cell to replicate
Reproduces by mitosis
Ex.: herpes, HIV
Ex.: streptococcus, E-coli
Not alive or dead
Are alive (cell)
Sub-microscopic
Microscopic
Not curable
Curable with antibiotics
Vaccine may prevent it
Some are needed to sustain life
Pathogenic
pathogenic
Can kill
Some can kill
infectious
Come in different shapes
Come in different shapes
infectious
Genetic info-RNA
Genetic info-DNA
Bio Standard 10 d
Viruses
both
1-have metabolism
1-lack metabolism
DNA/RNA
2-No growth
pathogens
3-Need host cell to
replicate
Some can kill
you if untreated
4-Ex.: HIV, herpes
infectious
5-not alive nor dead
6-sub-microscopic
Bacteria
2- grow
3-reproduce by
mitosis
4-Ex.: streptococcus
E-coli
5-are alive (cell)
Different shapes
7-not curable
8-vaccines may prevent
infection
6-microscopic
7-curable with antibiotics
8-some are needed to
sustain life
Compare & Contrast Bacteria & Viruses
1
1
metabolism
2
No
metabolism
2
3
3
Bacteria
Viruses
4
4
5
Ref.: bio standard 10d
5
Double Bubble-Compare & Contrast
Compare & Contrast Bacteria & Viruses
1
Metabolism,
enzymes,
growth
2
It is a cell
microscopic
1
lack
metabolism,
enzymes, and
growth
2
It is not a cell.
pathogen
3
3
Bacteria
Replicates
by mitosis or
simple cell
division
Viruses
DNA
Needs host’s
energy to
reproduce
4
4
lacks
Has
ribosomes;
Can kill you
Yes, it is alive.
5
Ref.: bio standard 10d
if not treated
ribosomes
Not alive and
not dead
5
Double Bubble-Compare & Contrast
Basic Characteristics of a Viruses
Capsid
Contains RNA or DNA
Envelope
Helps the virus to enter the cell
Glycoproteins Type of protein
DNA
Contained in capsule and injected into
cell
Reproduction Cannot make proteins, need host to
reproduce
Size
Microscopic-Smaller than any cell
Growth
No, since they have no metabolism
Metabolism
No, lack enzymes,
Basic Characteristics of Bacterium
Cell
membrane
Cytoplasm
-Covers cell surface
-Controls what enters & leaves cell
Structures inside of skeleton, ribosomes
Cytoskeleton Helps in movement, gives shape to the
cell
Ribosomes
They produce protein
Reproduction Mitosis or simple cell division (asexual),
DNA
Is the building plan for the cell,scattered
Metabolism
Yes, the cell grows or maintains, is alive
Size
Tiny cell that is alive
Cells and Viruses
Bio standard 5c
Question:
Prokaryotic Cells
Eukaryotic Cells
Viruses
1. Nucleus?
No nucleus
Has a nucleus
No nucleus
2. Does it grow?
Yes, it grows.
Yes, it grows.
No, it doesn’t grow.
3. Is it alive?
Yes, it is alive.
Yes, it is alive.
No, it is not alive.
Yes, it reproduces
using its own energy.
It reproduces using
its own energy.
Reproduces using the
host’s energy.
Scattered DNA
DNA in Nucleus
DNA in capsule
No cell organelles.
Has cell organelles
No cell organelles
haploid cell.
diploid cell.
No, it is not a cell.
9. Meiosis to create
sex cells?
No, no meiosis, no sex
cells, just divides
meiosis to create
sex cell
No cell division, because
it is not a cell
10. What is its size?
Tiny
small
microscopic
11. enzymes and a
metabolism?
Yes, it has enzymes
and a metabolism.
Yes, it has enzymes
and a metabolism.
No enzymes and no
metabolism.
12. locomotion?
via flagella or cilia
Moves
Locomotion via host
13. Multiplies by
Binary fission
Sexual reproduction Uses host to replicate
14. Is it a pathogen?
Is a pathogen.
Can be a pathogen
4. Does it reproduce?
using its
6. DNA?
7. Cell organelles?
8. Is it a cell?
It is a pathogen.
Biology Standard 10e
Work in Progress
Circle Map
Bio st. 10e
Central
HIV transmission
White blood cells targeted
Health class
Blood transfusion
Bodily fluids
Full blown AIDS
HIV Testing
Unprotected sex
Destruction of
helper T-cells
ineffective immune system
Reduced life span
HIV (Human
Sharing of needles
Thief
Immunodeficiency
Virus)
Retroviral drugs
Stop viral reproduction
Reduced white blood cell count
Lowered t-cell count
Opportunistic diseases
Contaminated mother milk
Pneumonia, eye infections, body sores
Death by opportunistic infection
experience
USC Kids
Bio books pg. 933-93511
Circle Map
Central
Bio st. 10e
Health class
HIV (Human
Thief
Immunodeficiency
Virus)
USC Kids
experience
Bio books pg. 933-93512
HIV / AIDS
Full Blown AIDS
Holt Biology
pgs. 934-935
HIV Virus
Invades
T-cell cannot kill
pathogens
T-Cell
T-cell dies
HIV Virus reproduces
and bursts out of cell Lowered T-cell
and moves into
count
another T-cell
900
800
700
600
500
400
Weakened
Immune system
300
200
100
0
1
2
3
4
5
6
7
Full blown AIDS
T-cell count <200 / Ml
of blood
Opportunist
infections kill person
Flow Map
from HIV Infection to Death
Bio st. 10e
CJH
HIV enters the body
Bio book pgs. 928-929
Enters white blood
cells by binding to
CD4-protein on some
human cells
HIV reproduces
Reduced T-cell count
Even lowered T-cell count
Full blown AIDS
HIV bursts out of T-cell & kills it
HIV enters T-cells
One less T-cell to kill
pathogens
Fewer T-cells kill fewer pathogens
T-cell count < 200 / ml of blood
Immune is system incapacitated
Opportunistic diseases infect the AIDS victim and kill him/her
Flow Map
from HIV Infection to Death
Bio st. 10e
CJH
Bio book pgs. 928-929