Honors Biology – Photosynthesis Review Questions and Correct Answers
4 views 0 purchase
Module
Honors Biology
Institution
Honors Biology
CO2, H2O Reactants of Photosynthesis
O2, C6H12O6 Products of Photosynthesis
Light Reactions, Calvin Cycle 2 stages of photosynthesis
Light energy bundled up as chemical energy in the form of ATP or NADPH Light Reactions
Chemical energy (ATP, NADPH) + CO2 form carbohydrates and oxygen Calvin Cyc...
Honors Biology – Photosynthesis
Review Questions and Correct Answers
CO2, H2O ✅Reactants of Photosynthesis
O2, C6H12O6 ✅Products of Photosynthesis
Light Reactions, Calvin Cycle ✅2 stages of photosynthesis
Light energy bundled up as chemical energy in the form of ATP or NADPH ✅Light
Reactions
Chemical energy (ATP, NADPH) + CO2 form carbohydrates and oxygen ✅Calvin
Cycle
Calvin Cycle ✅stage of photosynthesis that can occur without presence of light
Thylakoid ✅part of chloroplast Light Reactions take place in
Stroma ✅part of chloroplast Calvin Cycle takes place in
System of membranous sacs inside the inner membrane of the chloroplast ✅thylakoid
Stacks of thylakoids ✅grana
Solution surrounding the grana ✅stroma
Array of colors of sunlight ✅visible spectrum
Reflection, transmission, absorption ✅what three things can happen when white light
strikes an object?
A compound that absorbs light ✅pigment
Green pigment located in chloroplasts, giving plants their green color ✅chlorophyll
Pigment that absorbs mostly red light ✅chlorophyll a
Pigment that absorbs mostly blue light ✅chlorophyll b
Chlorophyll b, carotenoid ✅accessory pigments (2)
, Chlorophyll a ✅pigment that transfers excited electrons to the Primary electron
acceptor
Absorb light that neither chlorophyll can - greater absorption of colors from the visible
spectrum ✅purpose of carotenoids
Because chlorophyll is lost - the red and yellow colors are from carotenoids ✅in fall,
why do leaves appear red or yellow?
A cluster of proteins that contain photosynthetic pigments; embedded on the thylakoid
membrane ✅photosystem
Accessory pigments absorb light which is passed through molecules until it reaches a
specific pair of chlorophyll a molecules. ✅what is the preliminary step to
photosynthesis?
Light energy forces electrons to enter a higher energy level in 2 chlorophyll a molecules
of photosystem II. These excited electrons leave the chlorophyll a molecules. ✅what is
the first step to photosynthesis?
Excited electrons are accepted by an adjacent molecule in the thylakoid membrane
called the primary electron acceptor ✅what is the second step of photosynthesis?
The primary electron acceptor donates electrons to the first of a series of molecules
called the electron transport chain. As these electrons pass through molecules, they
lose most of their energy which is then used by the thylakoid to import H+ ions into the
cell ✅what is the third step of photosynthesis?
Light is absorbed by photosystem I and the same process occurs. The lost psi electrons
are replaced by the moving psii electrons. ✅what is the fourth step of photosynthesis?
In the stroma, electrons combine with an H+ ion and NADP+, which causes the
reduction (addition of an electron) of NADP+ to NADPH ✅what is the fifth and last step
of photosynthesis?
The splitting of water inside of the thylakoid ✅where do the replacement electrons for
photosystem II come from?
2(H2O) = 4(H+) + 4(e-) + O2 ✅what is the chemical formula for the splitting of water?
The synthesis of ATP ✅chemiosmosis
ATP synthase ✅enzyme responsible for chemiosmosis
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller twishfrancis. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £7.38. You're not tied to anything after your purchase.
