Repolarisation Study guides, Class notes & Summaries

lOMoARcPSD| Practice Test 1. What is Homeostasis? The ability to maintain relatively stable internal conditions 2. What is a Receptor? Picks up the change in environment 3. What is the Control center? Analyses the input compares it with the normal input and determines the correct response 4. What is an Effector? Produces the response initiated by the control center 5. What does the negative feedback system do? The variable changes in the opposite direction to that of the initial cha...

1 HUBS 191 PROGRESS TEST II | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ Nervous system cells Correct Answer: neurons and glia Neuron input zone Correct Answer: dendrites and cell body Neuron summation zone Correct Answer: axon hillock Neuron conduction zone Correct Answer: axon Neuron output zone 2 Correct Answer: axon terminals Axon hillock Correct Answer: decides whether to pass on information Tract Correct Answer: axon bundles in CNS Grey matter Correct ...

A+ Graded Exam For Aqa A Level Biology Paper 2 2023 3.6.4 Homeostasis - CORRECT ANSWERWhat is negative feedback? - CORRECT ANSWER-A response that returns a change in levels, back to normal. What is positive feedback? - CORRECT ANSWER-A response that amplifies a change from the normal level. Which factors influence blood glucose concentration? - CORRECT ANSWER-Eating food containing carbohydrates, glucose absorbed from intestine to blood. Exercising, more glucose is used in respirat...

BTEC Exam Questions with Correct Answers Unit 1 {Biology} Describe the function of the nucleolus Produces ribosomes and RNA Describe the function of the cell wall Provides rigidity and protection to the cell Describe the function of the chloroplasts Site of photosynthesis as they contain chlorophyll Describe the function of the plasmodesmata A channel through the cell wall the allows transport of materials from one cell to another Describe the function of the amy...

BTEC Applied Science Unit 1 Chemistry Exam 271 Questions with Answers How many electrons can an s subshell hold? - CORRECT ANSWER 2 How many electrons can a p subshell hold? - CORRECT ANSWER 6 How many electrons can a d subshell hold? - CORRECT ANSWER 10 Which subshells are available in the first energy level? - CORRECT ANSWER s Which subshells are available in the second energy level? - CORRECT ANSWER s and p Which subshells are available in the third energy level? - CORRECT...

1. Alleles that are neither dominant nor recessive to one another, so both alleles are always expressed in the phenotype. Codominant 2. The inheritance of a single gene Monohybrid inheri- tance 3. Physical, behavioural, biochemical expression of an organisms genotype Phenotype 4. The type of genes an individual has Genotype 5. Alles that is always expressed in the phenotype Dominant 6. Only expressed in the phenotype when homozy- gous Recessive 7. both alleles are...

1. How many electrons can an s subshell hold? 2 2. How many electrons can a p subshell hold? 6 3. How many electrons can a d subshell hold? 10 4. Which subshells are available in the first energy level? 5. Which subshells are available in the second en- ergy level? 6. Which subshells are available in the third energy level? s s and p s, p and d 7. What is Hund's rule? (Think bus seats!) Every orbital in a sub- shell must be singly filled with an electron before any one orbital can be d...

1 HUBS 191 NERVOUS SYSTEMEXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ Resting membrane potential Correct Answer: -70mV Open Correct Answer: Voltage gated ion channels are ? at -60mV Inactive Correct Answer: Voltage gated ion channels are ? at+30mV Na+ Correct Answer: Extracellular fluid as a high ? concentration and is therefore positive in comparison to the ICF K+ 2 Correct Answer: Intercellular fluid has a high ? concentration and is therefore slightly ...

1 HUBS 191 NERVOUS SYSTEM EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ Resting membrane potential Correct Answer: -70mV Open Correct Answer: Voltage gated ion channels are ? at -60mV Inactive Correct Answer: Voltage gated ion channels are ? at+30mV Na+ Correct Answer: Extracellular fluid as a high ? concentration and is therefore positive in comparison to the ICF K+ Correct Answer: Intercellular fluid has a high ? concentration and is therefore slightly ne...

AQA biology a-level paper 2 AQA biology a-level paper 2 describe and explain the steps in the light dependent reaction of photosynthesis - ANS 1. photoionisation: light reaches chlorophyll in PSII, which is absorbed by an electron, which becomes excited and moves to a higher energy level. 2. the electron passes to a carrier protein in the thylakoid membrane, and is passed down a series of carrier molecules called an electron transfer chain. 3. as the electron moves down, energy is lo...