Neurone Guías de estudio, Notas de estudios & Resúmenes

OCR A Level Biology Exam| Questions And Verified Answers With Complete Solutions| Graded A| 2024 Abiotic components Correct Answer Components of an ecosystem that are non living Abiotic factors Correct Answer Non living components of an ecosystem that effect other living organisms Acetycholine Correct Answer Chemical that acts as a transmitter that diffuses across synaptic cleft Acetycholinesterase Correct Answer Enzyme in synaptic cleft that breaks down acetycholine. After it has tr...

Edexcel A Level Biology Paper 3 Mark scheme June 2022: (9BI0) Paper 3: General and Practical Principles in Biology. A description including four of the following • {sodium / Na} channels open (1) • sodium ions flow into {axon / cell / neurone} (1) • this causes depolarisation (1) • {sodium / Na} channels close at {0.8ms / 30mV} (1) • {potassium / K} channels open at {0.8ms / 30mV} (1) (4) Question Number Answer Additional Guidance Mark 1(b) An answer that includes the followin...

Describe the events of fertilisation that occur after the acrosome reaction. -Membrane of sperm and egg cell fuse together -cortical granules release contents into zona pellucida -Zona pellucida thickens -Haploid nuclei fuse Explain how phospholipids form a cell surface membrane -Hydrophilic parts associate with water -Hydrophobic parts repel water -a bilayer forms with hydrophobic parts pointing in towards the centre of the bilayer Describe the role of the CFTR protein in e...

Primary motor innveration to the larynx and velum is provided by which cranial nerve? - Cranial nerve X (Vagus) Fela is a third-grade student in a public school. She is a speaker of African American Vernacular English (AAVE) who has difficulty with the Standard American English (SAE) dialect used in her classroom. Her teacher believes that Fela's language skills are affecting her academic performance and has referred her to the school's speech-language pathologist. Which of the following ...

negative tropisms - Answer-growth away from a stimulus Define homeostasis - Answer-Homeostasis is the regulation of internal conditions in the body. It is necessary to maintain optimal conditions for body functioning. These internal conditions can change as a result of processes within the body and as external conditions change. systems responsible for homeostasis - Answer-the nervous system - uses electrical impulses to communicate the endocrine system - uses chemical molecules to commun...

1. Question: Which type of contraction allows a muscle to produce tension without changing the angle of a skeleton joint all moving a load? 2. Question: Mooth muscle tissue can be found in all but which of the following places? 3. Question: All but which of the following are characteristics of aerobic respiration? 4. Question: Which structures of cardiac muscle allows the cells to contract in waves so the heart can both as a pump? 5. Question: Slow oxidative (SO) muscle fibres: 6. Question:...

AQA A Level Biology - Topic 6 - Survival And Response What is a stimulus? A change in the environment of an organism What is a tactic response? What is a kinetic response? Directional movement in response to a stimulus Non directional random movement in response to a stimulus What is a positive and negative taxis? Positive taxis- organism moves towards stimulus Negative taxis - organism moves away from stimulus What Are receptors? different types What are effec...

1. Question: Which type of contraction allows a muscle to produce tension without changing the angle of a skeleton joint all moving a load? 2. Question: Mooth muscle tissue can be found in all but which of the following places? 3. Question: All but which of the following are characteristics of aerobic respiration? 4. Question: Which structures of cardiac muscle allows the cells to contract in waves so the heart can both as a pump? 5. Question: Slow oxidative (SO) muscle fibres: 6. Question:...

BTEC Applied Science Unit 1 Biology Exam 118 Questions with Answers Describe the function of the nucleolus - CORRECT ANSWER Produces ribosomes and RNA Describe the function of the cell wall - CORRECT ANSWER Provides rigidity and protection to the cell Describe the function of the chloroplasts - CORRECT ANSWER Site of photosynthesis as they contain chlorophyll Describe the function of the plasmodesmata - CORRECT ANSWER A channel through the cell wall the allows transport of materials ...