Biology question and answers for December 04, 2023
- Q Draw an action potential graph showing the effects of the cobra venom on an action potential. I want 3 sequential / consecutive action potentials, like the diagram below. First, draw...
- Q Which of the following best describes how regular exercise is beneficial to the brain?Increased levels of endorphins are released into the brain, boosting a person's moodDecreased levels of proteins are...
- Q Piper touches a block of ice, and she feels that it is very cold. How does she feel the sensation of cold?The nerves in the finger stop producing action potentials...
- Q Which statement best describes the difference between the sympathetic and parasympathetic nervous systems?A. The sympathetic system contains the brain and spinal cord and the parasympathetic system contains the peripheral nerves.B....
- Q Select the correct answer from each drop-down menu.In some cases of head injuries, the cerebrum may be affected. This type of injury could cause a loss ofimpaired
- Q What does the all-or-none law state?All ion channels open at the same time or none at all.All action potentials have the same amplitude and velocity.All neurons are active at the...
- Q What is the primary function of the lymphoid system?Defending the body against both environmental hazards and internal threats.The production and distribution of plasma proteins.The transport of hormones.Circulation of nutrients.
- Q When you look directly at an object, you focus the image of that object on the
- Q When a very small dog licks 2-year-old Keiko's hand, Keiko calls the animal a cat becauseher framework of knowledge about cats relates to small animals and her framework ofknowledge about...
- Q The "powerhouses" of thecell are organelles called[?].A. Golgi bodiesB. chloroplastC. granaD. mitochondria
- Q If cells at the floor plate on the ventral midline do not express netrin, then...commissural neurons will continue to grow past the floor plate on the ventral midline.commissural neurons will...
- Q Which two body systems carry signals from one part of the body to another part of the body? A. circulatory and nervous B. digestive and respiratoryC. excretory and circulatoryD. excretory...
- Q Lydia is walking in the woods at night to observe owls. She hears a rustling behind a tree, which startles her and causes her body to go into a fight...
- Q Which one of the following statements is incorrect?A) Blocking voltage-gated K+ channels in the presynaptic membrane of a typical chemical synapse is likely to reduce the amount of neurotransmitter released...
- Q In a neuroscience research lab, say you have brain slices and you are trying to stain the slices to visualize the pathways of drugs. What kind of stain would be...
- Q At the excitatory synapse between motor axons and skeletal muscle fibers, acetylcholine is the neurotransmitter released. When acetylcholine binds to its postsynaptic receptor, a channel opens that is about equally...
- Q Action potentials are usually propagated in only one direction along an axon because...A) the refractory period prevents the immediate re-opening of voltage-gated Na+ channels.B) both the voltage-gated Na+ channels and...
- Q Which one of the following statements is incorrect?A) If released neurotransmitter increases the permeability of both Na+ and K+ ions in the postsynaptic membrane, the synapse is likely to be...
- Q A typical action potential in a neuron is caused by which one of the following processes?A) a brief increase in Na+ permeability followed by a brief increase in K+ permeability.B)...
- Q What is the threshold stimulus (V) in the calf muscle with a 40g load?A. 9.0B. noneC. 7.0D. 8.0
- Q If you were to examine an Action Potential from a cardiac muscle cell from the ventricle and an Action Potential from an SA nodal cell, which of the following would...
- Q Which ONE of the following is CORRECT regarding the potassium channel?Water is needed for transport and binding to the selectivity filter.The tetrameric structure forms a beta barrel pore.Conformational changes in...
- Q Estrogens:always have a negative feedback effect on LH and FSHdo not influence LH and FSH levelsalways have a positive feedback effect on LH and FSHsometimes show positive feedback and sometimes...
- Q An odorant is a molecule that... NOTE: Select all the correct answer choices.Obe dissolved in mucus.can diffuse past the cell membranecan bind to olfactory receptors.is volatile and can spread through...
- Q As Scooby-Doo continually sniff the Scooby Snax, Scooby-Doo experiences sensory adaptation andhas a harder time smelling the yummy food as time goes on. Which physiological event most likelyled to that?As...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!