Expert answer:Energy for Life Energy Reactions and Processes
Solved by verified expert:Week 3 Discussion: Energy for Life / Energy Reactions and
ProcessesIn your primary post, please write a response of at least
125 words to one (1) of the following three (3) bulleted options. In addition,
please make a substantive reply to a fellow student on any topic.Discussion Topic 1. The phytoplankton that brought Earth
to life. Review the video (Johnson, 2014) about the “phytoplankton
that brought Earth to life” from the link given below, or from the link in
the Instructor’s Insights area. This clip is under 5 minutes in length. In this
video, Penny Chisholm discusses her interest in a tiny phytoplankton called
Prochlorococcus. Based on that video, please address the following:
(a)
Why does Dr. Chisholm say that the ancestor of Prochlorococcus
“brought Earth to life”?
(b)
Why it is still important today?
(c)
How do Prochlorococcus samples from different parts of the world compare?
What do these geographic variations tell us about organisms.
Discussion Topic 2. Characteristics of ATP. If
you choose this topic for your primary post, you must base your post on the
instructor’s video about ATP (Cox, 2015). The video can be found in the
Instructor Insights area.
(a)
Describe two or more characteristics of ATP, covered in the video.
(b)
Explain how these characteristics are functionally important for the cell.
Please
note that I am looking for specific points that are covered in the
video, so material gleaned from Wikipedia or other sources may not
meet the requirements.
Discussion Topic 3. Chemosynthesis in the Giant
Tubeworm. The Giant Tubeworm (Riftia pachyptila) is an animal that
lives on the floor of the ocean, near hydrothermal vents that release very hot,
chemical-rich water. In that environment, there is no sunlight, and nothing to
eat. Yet these animals are able to get enough energy to live and grow (Deep
Marine Sciences, 2015; JKM12988, 2016; Kusek, 2007).
(a)
Where does the energy that Riftia pachyptila needs to live and grow, come
from?
(b)
How does that energy get into a form that Riftia pachyptila can use?
(c)
How does this relate to this weeks lessons about energy?
ReferencesCox, J. F. (2015). Four minutes about ATP. .
Please see “Instructor’s Insights” area for Week 3.Deep Marine Scenes. (2013). Facts: Giant Tube Worms.
[Video]. Retrieved from JKM12988. (2016, December 5). Giant Tube Worms and symbiotic
bacteria. [Video]. Retrieved from Johnson, R. (2014, March 5) The phytoplankton that brought
Earth to life. PBS Newshour. Public Broadcasting System. Retrieved from http://video.pbs.org/video/2365193451/Kusek, K. M. (2007, January 12). Deep-sea tubeworms get
versatile ‘inside’ help. Oceanus Magazine. Retrieved from http://www.whoi.edu/oceanus/feature/deep-sea-tubew…Bottom of Form
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