Ch3 Study Guide and Practice Questions SP24 PDF

**Ch3 Study Guide and Practice Questions** **[Key Concepts to grasp]** **Cell Theory** **Differences Between Prokaryotic and Eukaryotic Cells** **General Function of the Plasma Membrane** Homeostasis Compartmentalization **Phospholipids \-\-- Important** **Proteins in the plasma membrane**...

**Ch3 Study Guide and Practice Questions** **[Key Concepts to grasp]** **Cell Theory** **Differences Between Prokaryotic and Eukaryotic Cells** **General Function of the Plasma Membrane** Homeostasis Compartmentalization **Phospholipids \-\-- Important** **Proteins in the plasma membrane** **Gradients across the plasma membrane** **Osmosis \-\-- movement of water across a semipermeable membrane** **Organelles** \-\-- ER (rough and smooth), Golgi apparatus, secretory vesicles, lysosomes (all a part of the endomembrane system, more time was spent with these) Chloroplast, Mitochondria (very general information) Q1: When the temperature drops, the plasma membrane would become less fluid. In order to keep its mobility high (or normal), the cell changes the composition of phospholipids of the plasma membrane. Propose two possibilities. Q2: In the photo-bleaching experiment, what would be a conclusion if the bleached area stayed black (no green fluorescence)? Q3: Which of the following molecules do not require a transport protein to cross the plasma membrane? Choose all possible choices. Steroid hormones Glucose Oxygen Carbon dioxide mRNA transcript Q4: How can aquaporins help a red blood cell maintain shape in a changing aqueous environment? Q5: Some people will sprinkle table salt on slugs to kill them. Explain why it is an effective way of killing slugs. Q6: Cells that produce a lot of digestive enzymes, those found in the stomach, the small intestine, and the pancreas, are enriched in rough endoplasmic reticulum and Golgi apparatus. What is a possible reason for this observation?