Topic
Guide #11: How Does Life Use Energy?
Inquiry
in the Natural World – Spring 2003
1… early and current
concepts of a) food assimilation; and b) food “combustion” in cellular
respiration.
2… Galen’s
model of blood formation and movement, how it was revised by Harvey , and the
modern conception of the functions of blood circulation.
3… ways in which cellular
respiration is like combustion, and ways in which it is
different.
4… the nature of “cell
work,” and how the laws of thermodynamics help us understand the relationships
between cell work, ATP, cellular respiration, and
photosynthesis.
5… the general features of
metabolic pathways followed when glucose is used in cellular
respiration.
6… the relationships between photosynthesis and cellular respiration.
-
Benington, J., How Does Life Use
Energy?
1. How was Harvey’s theory of blood circulation fundamentally different from Galen’s ideas about blood formation and movement? What did Galen consider to be the function of the blood, and what do we now consider to be its functions?
2. What is “digestion”? What are the two main fates of the
products of
digestion?
3. In
what ways are combustion and cellular respiration alike? In what ways are they
different?
Day 3 reading
assignment (Wednesday, 9
April)
- Trefil and
Hazen, The Sciences, 3rd
edition, chapter 22, pp. 497 - 501.
-
Campbell, Mitchell & Reece, 1997, Biology: Concepts and Connections,
Chapter 5 – The Working Cell.
1. What does the term “cell work”
mean? What are three important forms of cell work? What substances directly and
indirectly supply the energy needed for cell work?
2. What are the three stages of metabolism
of glucose during cellular respiration? In what part of the animal cell does
each occur? In what part of the plant cell does each
occur?
3. Which products of plant photosynthesis
are used by animals? Which products of animal cellular respiration are used by
plants?
4. Diagram the general path of energy from
the sun through plants to use by animals.
Where does this energy ultimately end up?
NOTES:
Exam 3: Monday, 14 April (Topics 8-11; 100 pts)
Final Exam: 3:45PM Sat. 5 May; Murphy Aud. (Topics 12 & 13 - 50 pts;
Comprehensive - 75 pts)
CLARE 102 Web
page: http://web.sbu.edu/physics/faculty/dimattio/Clare102/physics.dimattio-sp03.htm