Biology 1002B Lecture : Lecture 1 notes

39 views2 pages

emeraldgiraffe24

16 Jan 2012

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

Brown when young, feeds on algae vaucheria litorea at first meal, sucks an algal filament (cell) into itself like a straw, everything except chloroplasts digested, adults appear green, chloroplasts provide all food energy for elysia now, Gains organic matter (carbon based food) and energy (glucose) Takes reduced organic molecules and uses energy from their breakdown. Ex: photo-autotroph uses light to take inorganic co2 to make organic compounds. Isolated chloroplasts (or in sea slug) have only two membranes. Measure also in other related slugs that exhibit kleptoplasty. Elysia is able to retain functioning chloroplasts for a long time (better than similar species) Obligate relationship between elysia chlorotica and vaucheria litorea. It cannot survive without it, cannot eat on its own after juvenile. Elysia is a hermaphrodite (male and female parts) Does not mate with self, needs a partner. Form a virus complex/crystal or billions of viruses.

Related Questions

1) A chemoautotroph would use _____ as an energy source.

A	carbon dioxide

B	chemical bonds within high energy molecules

sunlight

D	heat energy

2) A photoheterotroph would use _____ as a source of carbon atoms.

A	high energy organic molecules (e.g., sugars)

sunlight

C	carbon dioxide

D	inorganic molecules

3) Biologists sometimes divide living organisms into two groups: autotrophs and heterotrophs. These two groups differ in _____.

A	their electron acceptors

B	their mode of nutrition

C	the way that they generate ATP

D	their sources of energy

8. Three things can happen to a photon of light when ithits a molecule. What are they?

9. What special molecule evolved in the photosyntheticautotrophs that has never appeared inheterotrophs? Hint: This molecule is has agreen color!!

What can this molecule do? Bespecific!

What arrangement inside the chloroplastallows for a large surface area for the light dependent reactionsof photosynthesis? Name the part of the chloroplastinvolved.

bronzebadger655

1. You are given a culture of a purple-pigmented bacterium. You attempt to culture it under bright lights in a medium containing no reduced carbon source, and it fails to grow. You attempt to culture with glucose in the dark, and it still fails to grow. Last, you culture it with glucose in the light, and the culture grows. This bacterium is behaving as a:

A: Facultative Chemoheterotroph

B: Obligate Chemoheterotroph

C: Obligate Photoheterotroph

D: Facultative Photoautotroph

2. Organisms defined as autotrophs can:

A: Only use reduced carbon sources for biosynthesis

B: Only use the power of light to produce energy

C: Take CO₂ and convert it to organic molecules for biosynthesis

D: Only survive if they are in an atmosphere devoid of oxygen

3. Organisms defined as heterotrophs can:

A: Use reduced carbon sources for biosynthesis

B: Only use the power of light to produce ATP

C: Take CO₂ and convert it to organic molecules for biosynthesis

D: Only survive if they are in an atmosphere without oxygen

viridiantrout513

Biology 1002B Lecture : Lecture 1 notes

Document Summary

Get access

Related Documents

Biology 1002B Lecture Notes - Lecture 1: Vaucheria Litorea, Vaucheria, Kleptoplasty

Biology 1002B Lecture Notes - Elysia Chlorotica, Chromosome, Photosynthesis

Biology 1002B Lecture Notes - Chloroplast, Algae, Elysia Chlorotica

Related Questions