Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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1
3 points
What is the role of lysozyme and a low ionic
strength extraction buffer? Select all that apply.
Lysozyme is an enzyme found in lysosomes in
cells
Cells absorb water from a low ionic strength
extraction buffer, by osmosis, swell and lyse,
releasing their contents
Lysozyme breaks down bonds in the
peptidoglycan cell wall of bacteria, weakening
the structure
Lysozyme is an antibiotic found in tears,
saliva, human milk and mucus.
Cells release water into a low ionic strength
extraction buffer by osmosis, shrink and lyse,
releasing their contents
Lysozyme breaks down bonds in the cellulose
cell wall of plants, weakening the structure
2
1 point
Why is everything stored on ice?
We are working to extrat
keeping the samples on
and
down ofcells helning in the procecs

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Assessment task (2021
MODO07184 TRI2-1 F01CAM)
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2
1 point
Why is everything stored on ice?
O We are working to extract proteins, and
keeping the samples on ice leads to break
down of cells, helping in the process.
O We are working to extract nucleotides, which
can be broken down by nucleases released
from broken cells and keeping the
temperature cool limits their function.
We are working to extract proteins, which
can be broken down by proteases released
from broken cells and keeping the
temperature cool destroys them.
O We are working to extract proteins, which
can be broken down by proteases released
from broken cells and keeping the
temperature cool limits their function.
3
3 points
What is PEI and what
nrotocol?.
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