This document provides a set of questions about various biology topics including chemosynthesis, cellular respiration pathways, fermentation, photosynthesis, and the Krebs cycle. It asks the reader to define key terms, list components of metabolic pathways, explain concepts such as how plants obtain energy from sunlight, and compare cellular respiration between prokaryotes and eukaryotes. The document also provides essay prompts asking the reader to explain the Krebs cycle and its importance for the human body and exercise.

1. Directions:
Please answer each of the following questions. Please ensure
that your responses are at least 3 to 5 sentences in length.
1.What is chemosynthesis?
2.For glycolysis, the Krebs cycle, and the electron-transport
system, list two molecules that enter and two molecules that
leave each pathway.
3.Why are there different end products from different forms of
fermentation? What are these end products?
4.Describe how carbohydrates, fats, and proteins can be
interconverted from one to another.
5.Photosynthesis is a biochemical pathway that involves three
kinds of activities. Name these activities and explain how they
are related to each other.
6.How do photosystem I and photosystem II differ in the kinds
of reactions that take place?
7.Even though animals do not photosynthesize, they rely on the
sun for their energy. Explain this concept.
8.What is the value of a plant that has more than one kind of
photosynthetic pigment?
9.Aerobic cellular respiration occurs in three stages. Name
these stages and briefly describe what happens in each stage.
10.How is aerobic cellular respiration different in prokaryotic
and eukaryotic organisms?

2. 11. Explain the process of photosynthesis and why it is
important. What happens during photosynthesis in areas that
have a change of seasons?
12. Why do deciduous trees have leaves that change color in the
fall and are lost in the winter? Why is it that evergreen trees,
such as pine trees, keep green leaves (needles) all year round?
PART II: ESSAY
Directions:
Write a 1 to 2 page, double-spaced paper in 12 pt. font in
response to the following question. Find one article using
AAU’s LIRN (library) to use as support. Please use APA
format. Please visit the Academic Resource Center for an
effective guide on how use LIRN and for concise APA
guidelines.
Krebs Cycle
Explain the Krebs cycle process. Why is the Krebs cycle so
important for our bodies? Why do many body builders study
this process?