B3.2–C2.2 Plant Transport, Respiration & Neural Signalling
19 review questions with answers for B3.2–C2.2 Plant Transport, Respiration & Neural Signalling, marked SL and HL. Read them here, or play the set as a class game on the projector. Free to host, and students join with a code.
What are the porous end-walls of phloem cells that allow for sap flow?
- Limiting factor
- Proton gradient
- Sieve platesRight answer
- Myelin Sheath
All 19 questions and answers
What are the porous end-walls of phloem cells that allow for sap flow?
Answer: Sieve plates
Tissue made of dead, hollow tubes that transports water and minerals upwards?
Answer: Xylem
Living tissue that transports organic solutes (sugars) throughout the plant?
Answer: Phloem
The movement of organic solutes from "sources" to "sinks"?
Answer: Translocation
A polymer that strengthens xylem walls to prevent collapse under tension?
Answer: Lignin
Which ions become less available to corals and mollusks as the ocean acidifies?
Answer: Carbonate ions (CO₃²⁻)
Principle that a process can only go as fast as its scarcest or slowest factor allows?
Answer: Law of Limiting Factors
The range of environmental conditions within which a species can survive?
Answer: Range of tolerance
A factor (like temperature or pH) that prevents a population from increasing?
Answer: Limiting factor
Location of the link reaction and Krebs cycle?
Answer: Mitochondrial Matrix
4C molecule in the Krebs cycle that accepts the acetyl group from acetyl CoA?
Answer: Oxaloacetate
6C molecule formed at start of Krebs?
Answer: Citrate
What term describes the series of electron carriers in the inner mitochondrial membrane?
Answer: Electron transport chain
Which enzyme synthesizes ATP as protons flow down their concentration gradient?
Answer: ATP synthase
What term describes a difference in H⁺ concentration across a membrane?
Answer: Proton gradient
What is the insulating layer around an axon made of Schwann cells?
Answer: Myelin Sheath
What are the gaps in the myelin sheath where ion exchange occurs?
Answer: Nodes of Ranvier
The resting state of a neuron where the inside is more negative than the outside?
Answer: Resting Potential (about −70 mV)
The phase where sodium (Na⁺) channels open and Na⁺ rushes into the cell?
Answer: Depolarization (inside becomes positive)
Play it as a class game
Play this set opens it in splycr, where you can host it for your class straight away. Hosting needs no account: put the room code on the projector, and students join from a phone with the code and their first name. Each question plays as multiple choice, and the three wrong options are other answers from the same set.