Biology Is Life !

Using this link Finch Evolution pick a pair of finches that are very closely related and most recently evolved.(there are several pairs) Explain how you know they are closely related. Is this diagram showing Gradualism or Punctuated Equilibrium?
 

Hey Mr J!!

Okay, I say that the green warbler finch and the gray warbler finch are closely related. I know they are related because they come from the same immediate branch on the diagram. I can also make an inference that they are closely related because they look identical if it werent for the color difference. I know this diagram shows punctuated equilibrium as this site
can show me after using its information.

My question is what are the three cell layers that form during differentiation called and what do they ultimately become.
 

The three layers of cells that form during differentiation are the endoderm, mesoderm, and ectoderm. The endoderm becomes the digestive system and reproductive system. The mesoderm becomes the muscles & bones. The ectoderm becomes the skin and nervous system.

Click
PS-I actually used my notes to answer this question :)

What is a plant stomate and what does it do?
 

A plant stomate is a tiny opening or pore found on the undersides of a plant leaf. They are found in the epidermal tissue. The guard cells surrounding the stomata regulate the opening and closing of it. The stomata is the way the transfer of materials can occur. It transfers CO 2, light and water from the surrounding area into and out of the plant.


PLant Stomate

Question: What is the importance of recycling organic matter in an ecosystem?
 

the importace of recycling organic matter is that we make alotof wastes and someor them may be hazardous.


what is the job of a vacuole
 

let me redirect the question... meg asks " What is the importance of recycling organic matter in an ECOSYSTEM." it's different from what we do when we recycle.
 

There is a great importance of recycling organic matter in an ecosystem. All organisms depend on it. Organic matter is broken down by decomposers which allow the nutrients from the organic matter to make its way back into the food web. If organic matter stopped being recycled, the ecosystem would crumble as a lack of nutrients would not afford for the developing of new heterotrophs and autotrophs. Link

Question: How does a brain cell know to develop into a brain cell and a heart cell into a heart cell?
 

thanks for asking that question bryophyte... it's one that is almost ALWAYS asked on the regents
hj
 

A brain cell knows how to develop into a brain cell because that's just the way it's programed. It came from another brain cell that already started doing brain cell things. The same goes for a heart cell, it's programed that way. I don't really know how good this link is because its kind of difficult to find a website for this question but whatever.


MY QUESTION: What are 2 ways gel electrophoresis can be used?
 

AH! I love gel Electrophoresis'!!! And while watching SVU...amazing!

Gel Electrophoresis' can be used to solve crimes and for paternity tests. In solving the crime, a sample of DNA for suspects are placed in the wells to compare with DNA found at the crime scene. For paternity, a childs DNA is run with the possible fathers and the fragments are compared for similarities.

My Question::: Name two internal factors that affect the rate of enzyme action.

Gel Electrophoresis
 

Two things that effect enzyme action is pH and Temperature.

my Q: what are the 3 diffferent types of muscles and where are they located in the body?
 

chip says "A brain cell knows how to develop into a brain cell because that's just the way it's programed" True enough, but the reason the "program" is written that way is b/c ONLY CERTAIN GENES ARE ACTIVATED w/in each cell... even thought every cell has all of our chromosomes.
hj
 

type one: smooth muscle. smooth muscle is found inside of hollow organs like blood vessels, the stomach, and other organs.

type two: skeletal muscle. skeletal muscle is striated. it attatches to the tendons.

type three: cardiac muscle. cardiac muscle is found in the heart, and its what the heart is made of. it contracts to pump blood from the heart to all over the body.

Click Here for info about each muscle type.


Question: what is the purpose of restriction enzymes?
 

The purpose of restriction enzymes is that it cuts double stranded DNA and protects the cell from cleavage.
This is where i found my answer

my question is how does homeostasis help and organism to survive?
 

It helps to maintain the organism or it will die.

how and when mutations can be passed onto offspring


Click Here
 

mutations are passed to the offspring when there are mutations in its gametes. so when the gametes form into an offspring the mutations are carried with it and there you go, a mutant zombie baby!
Click Here

or Here
Maybe Here?


Which came first? The Tetraploid or the Haploid in Meiosis?
 

The tetraploid comes first in meiosis.

Clicketh Hereth

What is a nephron and what does it do?
 

A nephron is a filtering unit in the kidney that rids the blood of toxins.

My question is:
What are the different stages of meiosis?
 

The different stages of meiosis are interphase, prophase, metaphase, anaphase, and telephase.

meiosis!



my question: what is the difference between natural selection and competition?
 

Natural selection is occurring through generations of that species as they reproduce and their unfavorable traits become less common as they cannot survive in the environment.

Competition is the happens when two or more coexisting organisms compete for food, water, shelter, etc...

Click Here
 

oh yeah heere's my question

What is the job of the yolk in the egg of a chicken?
 

The job of a yolk in a chicken egg is to provide nutrients for the embryo. The yolk also contains a germinal disc where fertilization takes place.

Click Here

My question is how can we prove evolutuion?
 

We can prove evolution by using fossils, and comparing bone structures of different species. We can also compare pictures or anatomies of species that may look different today than they did years ago.

LINK



My question: What is the importance of an ecosystem and its biodiversity????
 

ga'morning !
:)
hj
 

johnson i really hate these stupid round questions i really really do
the question: What is the importance of an ecosystem and its biodiversity????

The importance of ecosystem is to provide a climate and food suitable for living creatures. The biodiversty in an ecosystem is to keep the populations of the living creatures in check http://www.abheritage.ca/abnature/Ecosystems/intro.htm
there is the website im too lazy to put it into link form