Biology
Biology
10th Edition
ISBN: 9780321794260
Author: Audesirk, Teresa/ Audesirk
Publisher: Pearson College Div
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Chapter 39.1, Problem 1CYL
Summary Introduction

To describe:

Five major types of receptors with examples.

Introduction:

Sensory receptors are the specialized cells designed to produce an electrical signal in response to an external stimulus from the environment. These receptors are often nerve cell consisting of dendrites, which are present in almost every part of the body, including skin, bladder and respiratory tracts. There are five major types of sensory receptors- thermoreceptors, photoreceptors, mechanoreceptor, pain receptors, chemoreceptors.

Summary Introduction

To describe:

How the nervous system codes for the type of stimulus and the intensity of the stimulus.

Introduction:

To create a response to a stimulus, the brain needs to perceive the nature and intensity of the stimulus. These can be determined by the size of receptor potential, produced by the sensory receptors.

Summary Introduction

To describe:

The term receptor potential and how it’s size helps to code for stimulus intensity.

Introduction:

Receptor potential is produced by the sensory receptors after sensing a stimulus. The size of receptor potential is dependent on the intensity of the stimulus.

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Students have asked these similar questions
a) Find a nitrogen base.  What carbon is the base attached to? b) What two nitrogenous bases are held together by 2 hydrogen bonds? c)What two nitrogenous bases are held together by 3 hydrogen bonds?
You will be building a double-stranded DNA molecule, representing a short (20 base) sequence that could be found in a chromosome.  It will have a 3' --> 5' strand and a 5' --> 3' strand. Use two full 12-base-pair DNA models.  a) Upload a photo of a model once the first 6 nucleotides have been inserted to base pair with the two parent strands. b)Upload a photo of DNA polymerase I and Ligase in "action" removing the RNA primer nucleotides and making new phosphodiester bonds. c)Upload a photo of the final two DNA strands, after Termination, identifying the parent and daughter strands of each.
Write down the 12 base-pairs (ex A-T or G-C) contained in the two models you will us from top to bottom below Model 1 bp:   Model 2 bp:
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