Class Notes (808,126)
Canada (493,084)
BIOL 1000 (60)
Lecture 26

BIOL 1000 Lecture 26: Lecture 26

3 Pages
Unlock Document

University of Manitoba
Biological Sciences
BIOL 1000
Kevin G.Scott

o78P Stomata = tiny pores in leaf through which CO enters2and O exits 2 Water that is absorbed by roots gets delivered to leaves in veins Membranes in chloroplasts are where most reactions of photosynthesis take place   Stroma = thick fluid that fills the inner compartment of a chloroplast Thylakoids = system of interconnected membranous sacs suspended in stroma Enclose the thylakoid space Grana = sacs that connect thylakoids Chlorophyll molecules are build into thylakoid membranes, they capture light energy  Thylakoid membranes house machinery used to convert light energy to chemical energy Chemical energy used in stroma to make sugar Scientists traced the process of photosynthesis by using isotopes Leaves of underwater plants often have bubbles of oxygen on them Oxygen produced from photosynthesis   6CO +26H O 2 C 6 12 66O  2 C. B. van Niel was experimenting with photosynthesizing bacteria that produce sugar from CO but d2 not release O   2 Hypothesized that when this occurs in plants, O is2released Hypothesis confirmed in 1950s using 18O (heavy isotope of oxygen) Water is both a reactant and a product in photosynthesis Experiments:  6 CO +212H O 2 C6 12 + 2H O +26O 2 6CO +212H O2  C 6 12 66H O 2 6O 2 Showed that the O 2roduced comes from H O, 2ot from CO 2 Photosynthesis is a redox process, as is cellular respir
More Less

Related notes for BIOL 1000

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.