Customer Service Chat
Get quote & make Payment
Description and measurement of circadian rhythms, Computer G, Biology
The description and measurement of circadian rhythms.
Describe the standard method used for the recording and graphing of behavioral rhythms in animals, especially the use of double-plotted graphs, where the abscissa scale is 48 hours long.
Define the general terminology used to describe rhythms, including: circadian, period (tau), phase, phase relationship, nadir, acrophase.
Describe how light-dark cycles are manipulated in experiments, and become familiar with the abbreviations used to represent artificial and natural light-dark cycles.
Contrast entrained and free-running biological rhythms.
Understand that light has been the most reliable zeitgeber, or "time-giver" to life on the planet earth.
An actograph is a graphical representation of sleep/wake patterns. The darkened bars are the times of activity. The clear areas are the times of inactivity. When viewing an actograph, you should view the X and Y axis. The X axis is also called the abscissa. If the actograph is single-plotted, there are 24 hours on the x-axis. If the actograph is double-plotted, there are 48 hours on the X-axis. The Y axis tells the number of days or hours that the data was collected. Looking at the graph, you can tell if the organism has an endogenous clock of less than 24 hour or more than 24 hours. If the graph slants from right to left, there are less than 24 hours in the organism''s activity. If the graph slants from left to right, there are more than 24 hours in the organism''s activity.
Three actographs (look closely to see the labels A, B, and C). Assume that the abscissa is either 24 or 48 hours for each actograph. You are asked to write two sentences for each actograph.
First, write a single-sentence description of the actograph, without using any of the special vocabulary you just learned; state what is going on in terms that dear old Mom would understand if you were talking to her on the phone.
Second, write a more technical sentence for each in which you provide a rough estimation of tau (the duration of the period), your understanding or best guess of the labels for the X- and Y-axes, and a statement as to whether each actograph is single- or double-plotted.
Reminder: Your completed assignment will have a total of SIX sentences, two that start out with the words, "In actograph A . . ." etc. Since two of the actographs don''t include numerical axes, you will have to make some guesses to complete this assignment.
Posted Date: 9/2/2013 1:16:26 PM | Location : United States
Ask an Expert
Description and measurement of circadian rhythms, Computer G, Assignment Help, Ask Question on Description and measurement of circadian rhythms, Computer G, Get Answer, Expert's Help, Description and measurement of circadian rhythms, Computer G Discussions
Write discussion on Description and measurement of circadian rhythms, Computer G
Your posts are moderated
Write your message here..
Explain the basic concept of energy, Explain the basic Concept of Energy? ...
Explain the basic Concept of Energy? Energy in simple terms may be defined as the ability, or power, to do work. As a student of dietetics and nutrition, you already know that
Determine in brief about the mse, Determine in brief about the MSE The ...
Determine in brief about the MSE The MSE deals with questions concerning the addressee's Consciousness, Emotional State, Thought Content and Clarity, Memory, Sensory Perception
Illustrate the plant taxonomy, Q. Illustrate the Plant taxonomy? Plant ...
Q. Illustrate the Plant taxonomy? Plant taxonomy has a long history. It gave birth to several phases of botany but remains exciting, interesting and important because there is
Define a liquid diet, Define a liquid diet A liquid diet is the one whi...
Define a liquid diet A liquid diet is the one which having of foods that can be served in liquid or strained forms at room temperature. These are usually prescribed after certa
Describe coping skills, Have you ever said, ‘I cannot cope up with this?' O...
Have you ever said, ‘I cannot cope up with this?' Or have you heard any one who is sick in your family saying, ‘I cannot cope with my sickness' or ‘I can not take care of this sick
Define the concept of health - public nutrition, Define the Concept of Heal...
Define the Concept of Health - Public Nutrition? The most widely accepted definition of health is the one given by WHO (1948) in the preamble to its constitution, Box 1 gives t
Reciprocal crosses , RECIPROCAL CROSSES Similar results were obtained w...
RECIPROCAL CROSSES Similar results were obtained with reciprocal crosses also. A reciprocal crosses involves the same traits but carried by sexes opposite to those in the origi
Determine protein needs during pregnancy period, Determine Protein needs du...
Determine Protein needs during pregnancy period? Altogether, 925 g of protein are deposited in a normal foetus and maternal accessory tissues and considering the dietary protei
Genomic dna from the sea urchin, Eric Davidson isolated and compared the se...
Eric Davidson isolated and compared the sequences of mRNA transcripts and genomic DNA from the sea urchin. Which of the following is a true statement regarding his findings? A.
Of which type of defense cell do viral infections, Of which type of defense...
Of which type of defense cell do viral infections stimulate the multiplication? The major leukocytes that generally multiply and participate in the defense against viral infect
Accounting Assignment Help
Economics Assignment Help
Finance Assignment Help
Statistics Assignment Help
Physics Assignment Help
Chemistry Assignment Help
Math Assignment Help
Biology Assignment Help
English Assignment Help
Management Assignment Help
Engineering Assignment Help
Programming Assignment Help
Computer Science Assignment Help
IT Courses and Help
Why Us ?
~24x7 hrs Support
~Quality of Work
~Time on Delivery
~Privacy of Work
Human Resource Management
Literature Review Writing Help
Follow Us |
T & C
Copyright by ExpertsMind IT Educational Pvt. Ltd.