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3/2 & 3/3 - 7th Grade Agenda
Collect HW: Reading & Notetaking p. 152 – 154
Period 1: 7th grade writing exam
Science Fair Presentations
Video: Viruses
Video: Walking w/ Monsters before Dino
Textbook Reading 318 – 321
HW: Reading & Notetaking 155 – 156
Reminder: Chap 8 Test on 3/4 & 3/5
6 Points Extra Credit: Bring a signed grade printout
from home due 3/11 & 3/12
What causes colds, flu,
smallpox, AIDS?
• Viruses
Cold Virus
Flu Virus
AIDS Virus
Is a virus alive?
• No
• Scientists does not
consider viruses alive
because it can not
reproduce by it self
• It must multiply in
another cell
Virus
• Virus contains single strand of DNA and
protein coat protecting it.
Virus
• Once inside a cell a
virus’s gen_____
etic
material takes over
many of the cell’s
functions.
ll to
• It instruct the ce___
produce the virus’s
proteins and genetic
material.
How Virus Spreads
Bacteria
• Bacteria are
prokaryotes.
• The genetic material
in their cells is not
contained in a
leus
nuc______
Bacteria
• Is Bacteria Alive?
• Yes. It is able to
reproduce by itself.
Parts of a Bacteria