muddiest of points

if you get down to one atom left in a half life problem do you split that into another half life or do you just get rid of it?

Muddiest Point

So I'm kind of confused on what the isolations mean, like why do they give us evidence for evolution?

EVOLUWHAT?

I still don't understand the Miller-Urey Experiment, can someone explain it to me in the simplest way possible?

I DONT GET THIS vv

Radioactive dating anyone?? helpppppppp

<3 Eleni P

no comprende. Ayuda por favor?

Hey guys! TessaN heree. So I pretty much understand everything, but I missed the day when we did lab 38 about evidence of evolution. So I just want to clarify what is the difference between homologous and analogous structures?

muddiest point!

okay, so...i'm pretty solid on most of what we covered in this chapter...but i'm completely clueless when it comes to half-lifes, radioactive dating, and everything else that was on the M&M Lab.

Stuck In The Mud

Hey guys, it's Maggie.

I was just confused if the amount of a half life changes based on the substance that its on??

Muddiest Point

Hey everyone it's Yasmin! ; )
my muddiest's points are:

1. I still don't get how to do the half-life problems...


2. Also, i don't understand how genetic drift plays a part in Evolution

If anyone can help that will be great!!!

how does it impact evolution????

hey its jessie and im wondering how photosynthesis, aerobic respiration and sexual respiration impacted evolution.

Muddiest Point

Hey it's allie and my mudiest point is... What is Genetic Drift? and why is it so important?

Muddiest Point

Hey its jon, and my muddiest point is the MAIN differences between Darwin and Lamarck?!

Unit 7: Evolution -Mud point!!!!!!!

The hardest part of this unit was radioactive dating.... I have troubles making graphs. Also, what does "descent with modification" mean??



-Eunice Chang

Muddiest Point

Hey its Jarod. My muddiest point is what is adaptive radiation again. I forgot please help.

Muddie Point

hey guyss! its kelly and the thing that I dont get from this unit is speciation

bones in the mud

My muddiest point how does the half lives of radioactive help us understand evolution

Point in the mud

Hey guys it's Shane, there is only one thing that I'm not sure about. I'm not sure about what natural selection has to do with survival of the fittest and if you could tell me that would help.

Scribe Post =)

Today was a typical day in a BIO. Fun as always! Got to love 8th period Bio. =)

We reviewed what a half life was and how it plays a part in EVOLUTION.

We reviewed by doing an extra problem in our packet on page 29 problem B. =(

Next, we went over the quiz that we took on Friday on 19.1.

-We talked about the difference between mass extinction and background extinction. Coevoltion which is the process by which 2 species evolve in response to changes over time.Also,we learned adaptive radiation was when a small group evolved over a short time into several different forms (beaks) that live in different ways. This takes us back to how the finches evolutionized their beak to adapt to their envoirment.

3. Lastly, we finished it up with a lab! doing a lab is a very helpful way to understand evolution and the many topics that come with it!

-We measured the head and the width of the jaw to see how are brain, head and teeth evolutionized from big jaw to a round one!

Class Reflection

Today in class, we talked a lot about half lifes.

That's the time period it takes a certain type of substance to decay and decrease by half.

To help tie the lesson in with a lab we used M&Ms as an example. Starting with 100 separate pieces we put them in a cup and shook them for ten seconds, then pour them onto a plate and remove all the ones with the labeled side 'm' up. we kept doing that for ten seconds 6 times collecting the data on a chart. Then in the packet we filled out all the questions and made a line graph on our data.

of course after we were done with the lab we got to eat the M&Ms!!

**dont forget to finish up pages 31 and 32 in the packet for homework!!**

and finally...CONGRATS TO THE GIANTS :)

Scribe!

Hey it's Allie!!!!!Today in class we turned in our Lab 40 the Grasshopper leg one... which by the way was absolutely DISGUSTING!! after we took a quick quiz about our 19.2 reading, we worked in our packet, which was about time periods and eras of evolution. Finally, we were watched a video. It was really interesting on the theories about how dinosuars went to extinct.

Scribe post:

Hey its Jessie.

In class today we reviewed the blog post from yesterday (homologous structures, analogous structures, vestigial stractures, comparative embryology and molecular biology) and talked about GENETIC VARIATION, GENETIC DRIFT and SPECIATION.

GENETIC VARIATION:

-the change in frequency of allels due to natural selection

GENETIC DRIFT:

-the change in gene pools of a small population due to change(wind blew them away, fire, hurricane,ect....)

SPECIATION:

-when species develope into new species (NEEDED- reproductive isolation)

we also measured the legs of dead grasshopers, YUCK! and compleated a lab.