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Cellular Structure, Organelles & Transport

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Questo esame si sostiene in inglese: le lezioni e le domande sono in inglese. L'interfaccia resta in italiano.

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1. Organelle Function and Endomembrane System

Eukaryotic cells contain membrane-bound organelles with specialized metabolic roles:

Mitochondria: primary site of ATP synthesis via oxidative phosphorylation.
Ribosomes: sites of protein translation (80S in eukaryotes, 70S in prokaryotes).
Rough Endoplasmic Reticulum (RER): synthesizes membrane-bound and secreted proteins.
Smooth Endoplasmic Reticulum (SER): synthesizes lipids and detoxifies metabolic byproducts.
Golgi Apparatus: modifies, packages, and sorts proteins for secretion.

Worked example

Contrast protein synthesis pathways for cytosolic vs lysosomal enzymes. Cytosolic enzymes are translated on free ribosomes in the cytoplasm. Lysosomal enzymes are translated on RER ribosomes, transferred to the Golgi apparatus for mannose-6-phosphate tagging, and packaged into lysosomal vesicles.

For the exam

Mitochondria: Double membrane, ATP generation via oxidative phosphorylation, contains own circular DNA
Chloroplasts: Double membrane, photosynthesis (Calvin cycle + light reactions), present in plant/algal cells
Endoplasmic Reticulum: Rough ER (ribosomes attached, protein synthesis) vs Smooth ER (lipid synthesis & detoxification)
Golgi Apparatus: Cis/trans faces, modifies, sorts, and packages proteins into secretable vesicles

1.Mitochondria are responsible for ATP generation through oxidative phosphorylation.

2.Smooth Endoplasmic Reticulum is studded with ribosomes for active protein synthesis.

3.Plant cell walls are composed primarily of cellulose.

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DNA Replication, Protein Synthesis & Mendelian Heredity

Cellular Structure, Organelles & Transport

Taught in English

Questo esame si sostiene in inglese: le lezioni e le domande sono in inglese. L'interfaccia resta in italiano.

100%

Hold ⌘ / Ctrl and scroll to zoom

SubjectLessonDone

Drag to pan · ⌘/Ctrl + scroll or pinch to zoom · tap a node for detail · +/− to expand a branch

Part 1 of 1

1. Organelle Function and Endomembrane System

Eukaryotic cells contain membrane-bound organelles with specialized metabolic roles:

Mitochondria: primary site of ATP synthesis via oxidative phosphorylation.
Ribosomes: sites of protein translation (80S in eukaryotes, 70S in prokaryotes).
Rough Endoplasmic Reticulum (RER): synthesizes membrane-bound and secreted proteins.
Smooth Endoplasmic Reticulum (SER): synthesizes lipids and detoxifies metabolic byproducts.
Golgi Apparatus: modifies, packages, and sorts proteins for secretion.

Worked example

For the exam

Mitochondria: Double membrane, ATP generation via oxidative phosphorylation, contains own circular DNA
Chloroplasts: Double membrane, photosynthesis (Calvin cycle + light reactions), present in plant/algal cells
Endoplasmic Reticulum: Rough ER (ribosomes attached, protein synthesis) vs Smooth ER (lipid synthesis & detoxification)
Golgi Apparatus: Cis/trans faces, modifies, sorts, and packages proteins into secretable vesicles

1.Mitochondria are responsible for ATP generation through oxidative phosphorylation.

2.Smooth Endoplasmic Reticulum is studded with ribosomes for active protein synthesis.

3.Plant cell walls are composed primarily of cellulose.

Unlock Full Lesson & Timed Practice Drills

Gain full lifetime access to all 2 lessons in Biology, interactive MindMaps, step-by-step solved questions, and full timed mock exams for CEnT-S.

Unlock Full CEnT-S Pass (€29)

Cellular Structure, Organelles & Transport

1. Organelle Function and Endomembrane System1. Organelle Function and Endomembrane System

Unlock Full Lesson & Timed Practice Drills

Cellular Structure, Organelles & Transport

1. Organelle Function and Endomembrane System1. Organelle Function and Endomembrane System

Unlock Full Lesson & Timed Practice Drills

1. Organelle Function and Endomembrane System

1. Organelle Function and Endomembrane System