Naila :]

Naila :]

Thursday, February 28, 2013

Post #6 Perot Museum Writing Assignment

Physics Lab:
  Different from the others, my group and I were part of the physics group. Instead of having to dissect hearts, we learned more about forces, than we already know. The guy that was teaching us, Mr. Squire, taught us many experiments that we're very interesting. Like.. 
    If you have paper and two dense metal balls, you can press the balls together with force, and the paper between them, it'll make a hole in the paper. Not just because of how much force you put did it make a hole, but because of friction. Friction burned the paper, which caused to make a hole. We even tried to use up to 6 papers, and it still worked!
    They had made a roller coaster out of legos to measure time per meter and speed. It started way up high, maybe about four feet, and then went downhill. We had to measure the length of the coaster, so that we can measure sped per meter. A car made out of legos was also there, so we just pushed the mini car down the path, and the speed got measured by a speed meter that was right above the half point. We were given a paper, and we were supposed to use the formula given. I can't remember how much it measured, but finding the answer was pretty cool.
    Did you know that if you get a big squared piece of wood, put a rough paper on top, tie a string on it to be able to hang it, place a plastic cup on it, then spin it around in a circle... the cup won't fall? I certainly didn't know it was even possible, until he gave us a demonstration. Imagine putting a cup on a piece of wood and spinning it.. without ever falling! The time we spent in there was pretty fun! Eve though there was much more, my mind is in many places, and can't remember very well.
    Sport floor: I didn't really participate in the activities, but i did watch all of them happen.
Watching people racing a gold olympian winner, football player, cheetah and a T-rex. Even though I knew cheetahs were the fastest animals in the world, i didn't know they were that fast. It was intriguing watching people trying to beat cheetahs.. and funny.
    Bird floor:   I  wanted to do the thing where you stand on a hologram of a little bird, move your arms around silly, and the bird in front of you on the screen does exactly what you were doing with your arms, but there was a big line. There was this little table that had kitchen utensils, I think, and you scoop up these little beads, pom-pom balls, and plastic white balls that were meant for picking up with the utensils into a cup. Depending on which section of the table you were sitting at, was what type of materials you would pick up. So.. it was demonstrating how much a serving was for a bird. It got pretty boring soon, so I just tried aiming the balls into the plastic cup for a while until we were suppose to move onto the next floor.
    Bones/dinosaurs floor: At first, when I walked in, all I saw were the dinosaurs in front of me. Then I saw pictures taking pictures of the ceiling, or so i thought. It was actually an enormous sea turtle! Seemed as big as a table made for eight, but round. The on the side, they had remade other animals that were known as extinct.
    Technology floor: 


Monday, February 25, 2013

Post #4 Circulating System

 pumps blood
 carries oxygen
 carries blood
Capillaries circulates it to the heart
2. What is the function of the entire Circulatory System?
  It circulates blood and oxygen to all parts of your body, so that you can stay alive.

4. How do the heart and lungs work together?
The cardiovascular system works with the respiratory system to ensure that all living cells receive a constant supply of oxygen - the cardiovascular system pumps the oxygen around the body and the respiratory system allows the oxygen to enter the blood from inhaled air.

Wednesday, February 20, 2013

Post #2 Relating Cells to the School Building

 Organelle Part of School
 Cell Membrane office
 Nucleus principle
 Lysosomes toilet
Vacuole closet
Ribosomes light
Endoplasmic Reticulum lunch line
Chloroplast plants
 Cell Walloutside of school wall

Post #1 Cell Structures and Functions

Friday, February 8, 2013

Web Surfing Science-Adaptions

1. Why is genetic variation important? Because if not then we would all look the same
2. What are the 3 key ingredients in the Recipe of Evolution? Variation, selection, time

1. Through the process of natural selection,and extensive use of  antibiotics            bacteria are becoming stronger.
2. What is another product people may misuse to increase bacterial resistance.soap
3. Describe how natural selection is occurring in these bacteria. Because the bacteria reproduces and makes different types.
Explain how variation in the pollen peepers shaped each population to best match its new environment on each different island. Cite details from one of the islands to support your explanation. Their differences helped them change certain qualities to be able o adapt more firmly to the environment. Like on Windsor Island, it receives much water, so they had to change and eat different types of foods.

1. What plant is said to be the ancestor of corn? teosinte
2. List two other examples of crops that humans have "domesticated" cabbage and broccoli
3. What is the downside to artificial selection?
In dogs, this has resulted in breeds that have health issues ranging from decreased life span to hip dysplasia.

Thursday, February 7, 2013

Adaptions writing

Over the many years that natural selection has roamed Earth, it has helped with our world becoming more developed.  Natural selection is the process of when a species becomes more specialized to suit their environments. So all the animals that we see today may have looked different from the way we see them. The more they live, means that they have helpful traits that help them survive, and will be passed on when they reproduce. Depending on where they live, is what their body should be more used to. Some animals were born with ability's and some have adapted to the specific way of living. Some animals that have owners may have  put 2 different breed's together to form a specific breed of animal, called selective breeding. Camouflage or the color of their skin helps them stay alive (external). Knowing when predators are around, and when to hide helps them to not get eaten by predators.

Heredity Writing Assignment

Genes are passed on from your parents. Depending on which traits you adopted, will depend on what you have. If your parents have different skin color, like these in the picture, then you could have your mother's, father's, or you could have both. Whenever your parents had physical interactions, the male's sperm had fertilized the female's egg, it turned out to be a baby growing inside of her. Depending on what traits were in the egg and sperm, was what was given to you. Your parent's can't choose what to give you, if not it chose itself. You may look different from your mother, and it'll be because you may have gotten more of your father's genes. Or the other way around. So basically genes and your parents worked together to form you.

Web Surfing Science-Heredity

1. The passing of  traits  from parent to child is the basis of heredity.
2. Where are the instructions that define our traits? In our genes.
3. What exactly is a trait? a feature or quality found in a person
4. What is an allele, and how many do we have for each trait? The set of genetic information for each form, 1 allele.
5. What do homozygous and heterozygous mean? homozygous- to describe having two of the same allele for a trait. Heterozygous- to describe having two different alleles for a trait.
6. If someone has a dominant allele and a recessive allele, what will happen?  The H allele will mask the h allele.
7. How are traits inherited? When the parents have a child, they pass on one of their two alleles to the child. The child's trait is determined by the alleles she receives from her parents.
8. Why don't all children of a family look just a like? Because they sometimes get different genes from their parents.
    Which of these traits do you have?I can roll my tongue, and no dimples

1. Gregor Mendel identified seven distinguishable individual traits that he could readily distinguish. Each one, he discovered, had two different forms of expression.
2. Mendel reasoned that the yellow trait was dominant.
3. Studies done by Thomas Hunt Morgan show that in fruit flies, the gene for eye color must be physically carried on the X chromosome.

Tuesday, February 5, 2013

4th 6 weeks CBA Review Part 2

Explain variation within a population or species by comparing external features, behaviors, or physiology of organisms that enhance their survival. 
List examples of these types of variations-
External Features: camouflage, skin pattern, eye color
Behaviors: eating a lot, hiding when something moves
Physiology of Organisms: quantity of hearts, how many legs or arms
Explain how these are variations-
Hibernation: some animals hibernate in the winter because it is hard to find food, instead of searching for food, they fall into a deep sleep, for quite some time. It also reduces their heartbeat and their body temperature.
Migrations: To move to a warmer climate, they wouldn't survive in the cold.
Storage of food in a bulb: Because they're plants, they don't have anywhere to store their food except in their bulbs. Not everybody has bulbs, so it is a variation.

List some examples of changes in genetic traits that have occurred over several generations through natural selection and selective breeding:
1. Examples of traits changing through Natural Selection: gills, durable feet, camouflage 
2. Examples of traits changing through Selective Breeding: half rottweiler and labrador dogs, cats with tiger stripes

Investigate and explain how internal structures of organisms have adaptations that allow specific functions such as (Explain these examples)-
Gills in fish (what does this adaptation allow fish to do): to breath
Hollow bones in birds (How does this adaptation help birds): helps them be lighter whenever they fly
Xylem in plants (what does this help the plant do): to carry water up to their stem

Vocabulary (Define each of the following)
Heredity:The passing on of physical or mental characteristics genetically from one generation to another.
Genes: traits that are passed on from your parents
Chromosome: DNA that carries the genes and functions of your heredity information.
Nucleus of a cell: Contains your DNA within the membrane
Trait: A genetically determined characteristic.
Inherited: To receive a trait from ones parents
Dichotomous key: A reference tool where a series of choices between alternative characters leads progressively to the identification of the species
Sexual reproduction: producing offspring with sexual interaction (2 parents)
Asexual reproduction: producing offspring with no sexual interaction, and sometimes budding (1 parent)
Uniform: Offspring that is exactly like its parent, like a clone
Diverse: Offspring that is different from its parents
Binary fission: A type of asexual production common among prokaryotes wherein a cell divides giving rise to two cells, each having the potential to grow to the size of the original cell.
Offspring: a child, young, the result of reproduction
Variation/ genetic variation: having different qualities from genetics or by adapting
Natural selection:  Natural selection is the process of when a species becomes more specialized to suit their environments.
Selective breeding: When someone would like a specific type of breed, they put both animals together and make or let them have physical interaction. When they are done, there is an offspring with the certain characteristics the person wanted.
Adaptation: When the living thing have to get use to its surroundings, it has to adapt to be able to survive. When they reach the point of already adapting, it is adaption.
Bulb (part of the plant): It is like the end of the root, but not the end that is in the ground, if not the end that is the product. The plant uses it to store their food, and we use it for food for us.

Monday, February 4, 2013

4th 6 weeks CBA Review part 1

1.  Explain how the different types of reproduction produce uniform or diverse offspring and give examples of each.
Uniform Offspring: By asexual reproduction
Examples: Strawberry plants, kiwis, apples, bananas, cotton.

Diverse Offspring: By sexual reproduction.
Examples: Human, dolphins, whales, pigs, puppies.

2. Explain heredity.
Heredity is the passing on of physical or mental characteristics genetically from one generation to another.

3. Understand that traits are inherited from prior generations and give examples and non-examples.
    Examples of inherited traits: 
Brown or black hair, blue or hazel eyes, short or tall, bushy or non-bushy eyebrows. 
    Non-examples (learned traits):
Left or right handed, being rude or nice, want to learn or not, listener or non- listener.
4. Explain where genes are found in your body.
 Genes are found in the nucleus.
5. Explain what genes are responsible for.
 They are responsible for your appearance and what traits have been passed on.
6.  Post a picture of a chromosome and explain what it does.

 A chromosome is what carries all of your traits and genes.

7. Post a picture of a nucleus and explain what it does.

 The nucleus has the chromosomes stored inside of them, which carry your traits and genes.

8. Explain what a dichotomous key is.
 Dichotomous key is a key used to determine with logical choices to categorize a species.
9. Explain variation and how it allows natural selection to take place and give examples.
 Variation is whenever you have a different quality/trait that may or may not help you survive in your ecosystem. Variation allows natural selection to occur because the more specialized or helpful variation you have, the more likely you are to survive and reproduce. If you have unhelpful traits, then you are less likely to survive and reproduce.

    Variation: Different skin pattern, necks, color of fur, camouflage ability.
    Natural Selection: short or long necks, white or black fur, camouflage or no camouflage.
    Give examples of variation allowing natural selection to take place:If your neck is not long enough to reach the leaves, you will not be able to eat. If you live in the snow and your fur is black, you will not be able to camouflage which will result in you being an easy target as prey for others.
10.  Explain how adaptations occur and give examples.
    How adaptations occur: The more time that a species is able to live in their economy,the better its adaptations are. Those who did not adapt well eventually will die, those whose traits were more helpful pass it on as an adaption to the next generation.
    Examples: migration, lungs, limbs, hibernation.
11. Explain what might happen if a disease struck a population of animals without great genetic diversity (Don't adapt well).
The disease would soon kill most of the animals anyway because the animals weren't adapted to having a disease or to their ecosystem.
·      What type of offspring is more likely to adapt to their environment and over come disease? Why?
A type of animal that has special characteristics that are helpful and keep them alive. If their ancestors have lived there for a long time, then  they're adaptions must have improved over the years. The improving of adaptions would help to over come a disease if others have gone through it and survived.
·      What type of internal structures or external structures help organisms survive?
Internal if your mentality is smart enough to notice when something is poisonous, if you are being lead into a trap, if there is a predator at the tip of your nose..
External if your genes were on your side and were able to camouflage with your surroundings, if you were able to change form or something.. 
12. List some examples of selective breeding and natural selection.

    Selective Breeding: labrador and golden retriever puppies, white horses, blue cows

    Natural Selection: long necks, long tongues, run faster.