Boundless Biology by Lukas Waller

By Lukas Waller

Ace Grade 12 University Biology (SBI4U). Content covers all nescassary knowledge of all processes and material involved in this difficult course. Hosts Lukas and Tammy will teach you this Grade 12 Uni... more

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FAQs about Boundless Biology by Lukas Waller:

How many episodes does Boundless Biology by Lukas Waller have?

The podcast currently has 13 episodes available.

Boundless Biology by Lukas Waller episodes:

November 10, 20243.3 - Calvin Cycle (LIR)
Location: Takes place in the stroma of the chloroplast.
Phases of the Calvin Cycle:
Carbon Fixation:

Reduction Phase:

Regeneration of RuBP:

Key Enzyme:
RuBisCO is the primary enzyme, acting as both a carboxylase and an oxygenase.

Can bind to CO₂ (carboxylation) or O₂ (oxygenation), the latter leading to photorespiration, which reduces efficiency.

Energy Requirement:
For each full turn of the cycle (producing 1 G3P):

To produce one glucose molecule, the cycle must run twice, requiring:

Products:
G3P is the direct product, which can be used to form glucose and other carbohydrates.

Photorespiration Issue:
Occurs when RuBisCO fixes O₂ instead of CO₂, leading to wasteful energy loss.

More likely in hot, dry climates when stomata close to conserve water.

Adaptations:
C4 and CAM plants have evolved mechanisms to minimize photorespiration and improve efficiency, which will be explored further.
...more
13min
November 10, 20243.2 - Light Dependent Reactions
Things To Remember
Cyclic Photophosphorylation occurs as a means to produce additional ATP rather than ATP and NADPH. This is because the Calvin Cycle (next episode) requires more ATP than NADPH.

PSI = Photosystem 1, PSII = Photosystem 2
Diagrams
Noncyclic Photophosphorylation: ⁠https://cdn.kastatic.org/ka-perseus-images/faeb1179a538a3a8106fa5f3b9bd90c92f9834a7.png⁠

Cyclic Photophosphorylation: https://cdn.kastatic.org/ka-perseus-images/d47991f2cf9c7a4fc22f055b60793af8c341991f.png
Quizzes
https://quizlet.com/30876000/light-dependent-reactions-light-independent-reactions-flash-cards/
...more
12min
November 10, 20243.1 - Intro to Photosynthesis
Key Terms, try drawing these out.
A) Leaf Anatomy
palisade layer

cuticle layer

spongy layer

vascular bundle (xylem/phloem)

stomata

guard cells

epidermis (upper/lower)
B) Chloroplast Anatomy
membrane (inner/IMS/outer)

thylakoid membrane

thylakoid lumen

thylakoid lamella

granum
C) When do stomata open and how do they do so?
Topics not covered in-depth:
Sunlight triggers [K+] ion movement which requires ATP from the plant in order to open guard cells.
...more
9min

FAQs about Boundless Biology by Lukas Waller:

How many episodes does Boundless Biology by Lukas Waller have?

The podcast currently has 13 episodes available.