01.Amanda+Atalla

Personal Biography's-Robert Hooke and Robert Brown 7/2/2012

Robert Hooke:


 * 1) Who were they?

> wrote Micrographia, the first book describing observations made through a microscope. he came about this when we looked through a microscope and discovered that with in this cork screw that he had these little molecules also know as cells.
 *  Robert Brown was born on July 18, 1635, at Freshwater the son of a churchman. He was apparently largely educated at home by his father, although he also served an apprenticeship to an artist. He was able to enter Westminster School at the age of thirteen, and from there went to Oxford, where some of the best scientists in England were working at the time.
 * Robert brown was a english physicist who

2. What was their job?

3.What did they contribute to cell theory? > He thought these cells existed only in plants, since he and his scientific contemporaries had observed the structures only in plant material.

**__Completed in workbook.__** **__19/3/12-__ In class work Digestive Systems** VS 

Comparison :

Similarities-

 .Esophagus

. Small intestine

. Large intestine

.mouths . Liver

Differences-

.A cow has a rumen . A dog has a caecum . A cow doesn't have a caecum . Dog has a pelvic bone . Dog has a spleen

2rd of April 2012 They are used to detect blocks in your arteries, this is done by using fluids such as iodine which enables radiographs to know whereabouts a blockage may be and how serious it is as well.
 * //1. What are radioisotopes used for in medicine?//
 * //2. Provide 3 examples of a radioisotope and list where it is used.//
 * //Carbon 14- It is used to date how old bodies are after they are no longer alive.//
 * //Iodine- Iodine can be used as a antiseptic//
 * //Hydrogen- It is used to generate and create energy//


 * //3. Choose one of your examples and describe the process. (iodine)//
 * 1. iodine is injected into the body
 * 2. Person is put under a C.T scanner
 * 3. Then a doctor will determine whether or not there maybe a blockage in your arteries
 * 4. They are able to detect this because the iodine shows where blood my not be flowing.

//PROS- It could save a life as being able to detect blockages or cancer it is seen as a good thing//
 * //4. List the pros and cons of using radioisotopes in medicine.//

//CONS- one the other hand to much exposure to radioactive activity could be dangerous, this is as it traumatises cells within your body which may develop into cancer// **ADAPTATIONS WITHIN AN ENVIRONMENT-** **research the mosquito fish( scientific name-**
 * __//scientific name: Gambusia affinis affinis// __**
 * Both sexes have a pale grey body, fading to muddy white on the belly.
 * The dorsal and rounded caudal fin may exhibit dotted banding.
 * Mosquitofish are omnivorous and have a voracious appetite for mosquitoes.
 * A large female can consume hundreds of larvae per day.
 * All sizes and ages of mosquitofish feed on mosquito larvae.
 * They also eat algae and small invertebrates.


 * <span style="background-color: #ffffff; display: inline !important; text-align: left; text-decoration: inherit;"> During the winter, the fish hibernate in the lower water depths, and reappear in late spring when water temperature becomes warmer.

**Why were mosquito fish introduced?** <span style="background-color: #ffffff; display: inline !important; text-decoration: inherit;"> The<span class="IL_SPAN"> Mosquito Fish was introduced to many areas because they were believed to be good at controlling <span class="IL_SPAN">mosquito larvae. In fact most fish eat<span class="IL_SPAN">mosquito larvae readily and it is often difficult to find any in water containing any sort of fish.
 * <span style="background-color: #ffffff; display: block; display: inline !important; text-align: left; text-decoration: inherit;"> The fish prefer sunlit areas of the pond and do not thrive in a heavily shaded pond.


 * What are some of their adaptations?**

The mosquito fish has been able to evolve and develop to be able to adapt to there current environments they have done this as they are able to tolerate temperatures.They have been able to expand their distribution e.g 55° North to 44° South. Another factor is that they are able to resist pollutions that may appear in the natural habitat. These increase their chances of survival because they have evolved to be able to resist things that appear in their natural habitat such as pollution that means that it will decrease the number of death and therefore the mosquito fish have added years to there survival. **What has this done to the ecosystem and how has this influenced the distribution and abundance of the mosquito fish?** This has impacted the three factors which are the ecosystem, distribution and abundance of the mosquito fish. This has been achieved since they have adapted to their environment, this then means that both the distribution and abundance has and will keep increasing if they keep evolving. Due to the increasing numbers of the mosquito fish it will end up decreasing the the numbers of mosquitos as it feeds off mosquito larvae.

12 june 2012- UREY AND MILLER