The Unit 7 Hunger Games

Today in #hbio we’ll be reviewing for tomorrow’s test over Unit 7. To review, you’ve been selected to be Tributes in the Unit 7 Hunger Games!!! Ok, so its not life or death survival of the fittest, instead we’ll be doing a speed stations activity. There are 32 stations posted throughout the room. You and a partner will try to complete these stations as ACCURATELY & QUICKLY as possible. You are Competing against the other players in your class. The fastest, and the most accurate, will receive a bonus point.

At the end of the day, I will post the stations on this site for you to review with. Be sure to study your Unit 7 Study Guide as well. Good Luck, and may the odds be forever in your favor…

Unit 7 Review: Answer Sheet – Link –

While you’re at home enjoying your “wind chill” day

Actually Kitty, It’s a “Wind Chill” Day

I’m sure this was you last night when you found out school would be cancelled. But… instead of sitting around in your PJs taking selfies all day, maybe you should be studying for your upcoming tests. Because of the day off we’ll adjust the test dates.

Biology – Unit 7 (Reproduction) Test: Friday, January 31st.

#hbio students, your study guide is now available: Bio Unit 7 Study Guide – PDF

Chemistry – Unit 7 (Stoichiometry) Test: Monday, February 3rd

Stay Warm and be safe if you’re treking outside.

Mitosis Vs. Meiosis

“So what’s different about Mitosis versus Meiosis?”

 Well looking at the picture we see Mitosis on the left… There is a single cell, which duplicates its chromosomes, divides, and the result are two cells identical to the parent cell.

Meiosis, on the right, all those same steps occur… BUT THEN! Another cell division occurs! We do PMAT a second Time (Thats Cray-Cray Mr. K)! The result then are 4 cells, with half the number of chromosomes, and each one has a unique set of chromosomes.

I know what you’re thinking… “But why would we only need half the number of chromosomes? Doesn’t each one of the cells of our body need all 46 chromosomes!?”

It is true that each one of our Somatic, or Body, cells needs a complete set of chromosomes. But our Gametes, or Sex Cells, only need half the number of chromosomes. This is known as being Haploid, or having one set of chromosomes. And I bet you already know why! That’s right, the other half comes from the 2nd parent during sexual reproduction (That’s off the chain Mr. K). When the male and female gametes meet (Fertilization), they combine to form one new cell called a Zygote that has two sets of chromosomes, one from Mom and one from Dad. This is known as being Diploid.

The Red X and the Blue X are duplicated chromosomes. During Prophase 1, they sometimes “Switch Legs”. This is known as Crossing Over.

The coolest part about the whole process is that it makes you Unique. And not in the Sesame Street, “You are special,” kind of way. More like, there are more than 8 million different genetic combinations that you can create in each of your gametes and they are assorted completely randomly (Independent Assortment), meaning that for each of your 23 pairs, you can give either one of the chromosomes, its not predetermined! And sometimes, Duplicated Chromosomes will even switch pieces (Crossing Over) making them even more unique!

All in all, Meiosis is a pretty unique process and I hope you enjoy learing about it as much as I enjoy teaching it!

Cell Cycle Stations

I know, you miss me already…

Seriously though, for the next two days of Biology you’ll be working on completing 6 small assignments. The packet of papers is dues on Wednesday when I return. Follow the directions carefully and be respectful of your classmates because you will all be moving around the room and working. This is an individual assignment. There is to be absolutely no copying. However, you may collaborate with people whom are at your stations. This means you can ask them for help or guidance… YOU MAY NOT ASK THEM FOR ANSWERS! Below I’ve posted some videos to assist and you’ll find everything else you need in the classroom. Feel free to contact me should problems arise, but otherwise… Good luck!

Station 1:

Station 5:

Here it goes again…

Ok, you may be to young (or uncool) to know that song lyric, but regardless here we go on to semester 2! We’ve reached the halfway mark but we have a long haul left. In both Chemistry and Biology we have 5 units left to complete this year.

For the rest of the year, make sure you use the “Semester 2” links below the class tabs to reach the content we’ll be doing in class (and for those of you just joining us, you can find class rules and procedures there as well).

Biology: Unit 7 – REPRODUCTION: 

We’ll be covering chromosomes, types of reproduction (careful…), Mitosis, Meiosis, Karyotyping and Genetic Disorders

Chemistry: Unit 7 – Stoichiometry:

Possibly the most important unit in chemistry, especially if you plan on continuing with chemistry in future classes or as a major/profession.