Muddiest Point

difference between depolarization and polarization?

Muddiest Point

where do the electrons come from in the photosynthesis process, and where do they go/what do they do?

Muddiest Point

what are the differences between the classes of fish, and what are example of each?

Scribe 1/31

Today in class we reviewed Darwin and Lamarck in UP 13.

Question 1 - Mutations and genetic recombination are responsible for variations among offspring. Answer: neither, because no body knew about DNA at this time.

Question 2 - There is a struggle for existence among organisms. Answer: Darwin only because he believed that organisms compete and only the fittest will survive.

Question 3 - Modern giraffes are descendants of short-necked ancestors. Answer: Lamarck only because he believed in acquired characteristics.

Question 4 - Two mice whose tails hab been cut off should produce offspring with no tails. Answer: Lamarck only

Question 5 - There is a tendency towards overproduction in nature. Answer: Darwin only because the species overproduce to make sure they pass down their genes.

Question 8 - If you lift weights, your children will be born with strong muscles. Answer: Lamarck only.

Question 14 - All organisms have an inborn urge to better themselves and become more fit for their environment; thus birds developed wings because of this urge. Answer: Lamarck.

We also completed Lab 38, which was based on eveidence for evolution. There was questions about vestigial structures, comparative embryology, and we also colored a picture of different animals bones.

Muddiest Point

My muddiest point is what is a blastocyst and where do the cells go after this step.

Maple Syrup Urine Disease

Maple syrup urine disease is a disorder that is passed down genetically. People with this disease cannot break down some proteins, resulting in urine that smells like maple syrup. This disease is caused by a gene defect, in which the amino acids leucine, isoleucine, and valine cannot be broken down. The affect of not being able to break the amino acids down is a buildup of these chemicals in the blood. If this disease is untreated, it can lead to seizures, comas, and death. Maple syrup is not very common, only affecting about 1 in every 185,000. The genes related to this disease are mutations in the BCKDHA, BCKDHB, DBT, and DLDD genes. These genes provide instructions for making proteins for breaking down the certain amino acids. This disease is AUTOSOMAL RECESSIVE, so people can be a carrier of the disease, but show no symptoms. If not treated, this disease is very deadly, so for a treatment, a special diet is needed to follow. This diet may be a protein free diet, or avoiding eating foods with the amino acids leucine, isoleucine, and valine.

Muddiest Point

What are the main difference between b cells and t cells? Also how do you identify what type of t cell it is

Scribe 10/27

Today in class, we reviewed the differences and similarities between Bacterial and Viral diseases. After reviewing the differences, we took our quiz on Chapter 20, and section 35.1. The homework is UP 12. The disease of the day was Schistosomiasis.

Viral Diseases:

destroys cell by interfering with DNA

destroys cells by bursting them

NOT treated with antibiotics

Bacterial:

release toxins

treated with antibiotics

can be controlled

Similarities:

may be prevented by antibiotics

mutate, adapt, evolve

destroys cells

caused by pathogens

disrupts homeostasis

spread in similar ways

Next Scribe is... Paul Salay

Muddiest Point

My muddiest point is the overall sections we read on ATP and ADP. I really don't understand what ATP is and the difference of ATP and ADP is.

Class on 10/3

Today we started off by taking a pop quiz that ended up not counting for our grade. Mrs Stein made a story about a cake factory and we had to make anologys to the cell parts. Everyone was very worried about doing bad on it, but was relieved after she told us it is not for a grade. After that we did a powerpoint with brief notes on parts of the cell, which is all on moodle. Then we learned how to do the SQ3R notes, and that is the homework for tonight. (8.1, 9.1, 9.2) The SQ3R stands for survey, question, read actively, recite what you learned, and review the main ideas.

Muddiest Point

My muddiest point is the food web with the energy transfers and what happens to energy that the primary producers create, and how the energy gets lost by going up the web.

JayJ Unit 1 Reflection

Unit 1 was a good first unit for me. At first I had no clue what most of the stuff meant, but after tie reviewing I knew most of the material. Also, I didn't remember the parts of the microscope and things about it which is important, and we reviewed that also. Learning about tetrahymena and making hypothesis about it and identifying the control group, independent and dependent variables was a good review. Unit 1 was also very interesting to observe microscopic organism and observe them. I am looking forward to many great units to come, just like this one.