Glow Worms - Arachnocampa flava Glow worms are the larvae of a large mosquito-like fly. They inhabit a variety of terrain that consists of shady protected places with high humidity, and somewhat damp places where you can find glow worms are in the earth walls of roadside cuttings and tracks, crevices in rock faces, creek banks, and on root masses of large fallen trees. The life cycle of a glow worm involves four stages: egg, larva, pupa and adult fly. Eggs are laid in large numbers directly onto the walls of the site. Some two weeks later the eggs hatch into tiny larvae that immediately start glowing from their tails.
4. What was discovered within a few years of Lankester’s essays and what were they part of? A: Within a few years of Lankester's essay, scientists would discover predatory cells roving our bodies and devouring bacteria, and immunology was born. 5. How does the “Cotesia” protect its worm in young tobacco hornworms?
Leaving most of the body left to mold and beetles, but even after a couple months, when the flesh is almost nothing, forensic entomologists can interrogate the remaining maggots by extracting their juices, because most of the toxins linger in the fly larvae. Therefore investigators can detect the presence of any drugs, poisons, or other chemicals that may have entered the body. Additionally the victim’s race may be able to be determined depending on the amounts of melanin skin pigment in the soil. (decomposition, enotes) There are many factors that can cause variations in the outcome, but for the most part the decomposition of the bodies is based on a specific formula. After the bodies are finished decomposing in the body farm the skeletons are taken and are steam-cleaned where they are put in storage for the use of science once more.
Fred Thompson Zoology 2/19/13 Heart Rate of Blackworms Experiment Introduction Blackworms are a species of worm that typically lives in shallow water habitats. They feed on microscopic organisms and organic matter. The scientific name for Blackworms is Lumbriculus variegatus and their classification is as follows: Kingdom: Animalia, Phylum: Annelida, Class: Clitellata, Subclass: Oligochaeta, Order Lumbriculida, Family Lumbriculidae and Genus: Lumbriculus (Svahn, 2009). An adult black worm can have anywhere from 130 segments to 250 segments. These segments are capable of forming a completely new black worm when detached from the host body, and in most Blackworms is the primary for of siring offspring.
In the meantime they rob your system of nutrition, loading you down with their excretions and secretions these include Lice and Ringworm 1.3 Colonisation is when a bacterial strain invades a region of your body and starts to rapidly divide - it sets up a new colony Infection is similar but only usually used for opportunistic pathogenic bacteria - that is it does not usually refer to bacteria that normally inhabit us 1.4 Localised infection is restricted to a ceratin region of your body Systemic infection means that the infection is throughout your body. This usually means that the bacteria have been able to invade either your ciculatory system or the lymphatic system and spread 1.5 Some of the poor practises that may
Diffusion Across a Plasma Membrane In order to demonstrate the way in which semipermeable membranes work, an experiment replicating the digestive system of a caterpillar was preformed. To simulate a semipermeable membrane dialysis tubing was used. It is capable of demonstrating the way in which a semipermeable membrane will allow only molecules under a certain size to pass through it. First, to simulate the crop of the caterpillar, a small beaker was filled with four pipettes worth of cooked starch as well as four pipettes worth of alpha amylase solution and stirred. The cooked starch acts as the food, which the caterpillar would eat, and the alpha amylase, which is a digestive enzyme common in saliva, is stirred with it to simulate the chewing and mixing of food and saliva which constitutes the first step in the digestive system.
The first petri dish we placed under the microscope at 37x was the one containing wild-type hermaphrodite offspring. The Next crosses that we experimented with were wild-type males with sma-9 hermaphrodites. Taking the worm-pick, and putting it in the flame ensured that it was sterile to use in the petri dish with the worms. Then, using that tool under the microscope, we picked out some worms that were in the L4 stage of development (shown in Diagram 1), both hermaphrodites and wild-type males and placed them in a completely new petri dish to determine offspring. They were quite small and were such a high number of them in the prepared petri dishes, roughly 500 in each.
As part of an undergraduate project, a student was attempting to construct a restriction map for the plasmid pUC23 using the restriction enzymes EcoRI and BamHI. After carrying out both single and double enzyme digest reactions and electrophoresing each reaction mix through an aragose gel, the picture below is obtained, showing the number of DNA fragments produced in each reaction, along with the sizes of each fragment. From this information, construct a restriction map of the pUC23 for enzymes EcoRI and BamHI. Digest Performed: Sizes of Fragments Obtained:
Eggsellent Lab Analysis Questions 1. Draw and label two pictures - Initial and Final - showing the movement of food coloring molecules. You must use all of the following words: high concentration, low concentration, diffusion, and cell membrane 1. Draw the egg after it has been in the food coloring for 24 hours. Explain what might have occurred (be sure to explain what conditions had to exist both inside and outside the egg)using all of the following terms: diffusion, semi-permeable membrane, high concentration, low concentration.
(2012). Laboratory exercises in human nutrition (2nd ed.). Quincy, MA: Quincy College. (only available at the College bookstore) College Bookstore: 1357 Hancock Street, Quincy, MA 02169-5103 Website: www.qc.bkstr.com; Telephone: (617) 773-4849; Fax: (617) 770-3372 Resources & Learning Materials: * Wardlaw, G.M. & Smith, A.M. (2013).