Life Science
Bellringers
Unit 7: DNA
Bellringer
1/9/24
Choose a new seat ONLY FOR TODAY
Pick up a syllabus and Class Procedures sheet
Attach to notebook pages – 90 & 91
Pick up a laptop.
Open up Teams.
Complete the quiz to help you review these 2 documents.
When you finish, turn in your laptop and pick up the 3
documents on top of the cart.
Bellringer
1/11/24
and
1/16/24
Open Notebook to page 85
○
Set up new Science Notebook Table of Contents:
DNA
Date
#
Assignment
1/11 Bellringer #1-
Unit 7:
page
86-89
1/9
Syllabus
90
1/9
Class Policies and Procedures
91
Bellringer #1
○
1/19/24
Turn to page 86 and title this page: Bellringers
Use the Nucleic Acids Reading to help you answer the questions.
Reminder: Write each question or include questions in your
answers.
1.
2.
3.
4.
5.
6.
Where is DNA located in your cells?
What does DNA do for your cells?
Does everyone have the exact same DNA? Explain.
What 2 molecules make up the backbone of DNA?
What do we call the "steps" or rungs on the DNA ladder?
How many different types of "steps" molecules are there?
Bellringer #1
1/19/24
Turn to page 86 and title this page: Bellringers
Attach the questions to your Bellringers page.
○
Use the Nucleic Acids Reading to help you answer the questions.
1.
2.
3.
4.
5.
6.
Where is DNA located in your cells?
What does DNA do for your cells?
Does everyone have the exact same DNA? Explain.
What 2 molecules make up the backbone of DNA?
What do we call the "steps" or rungs on the DNA ladder?
How many different types of "steps" molecules are there?
Bellringer #1
ANSWERS
1/19/24
1. Where is DNA located in your cells? the nucleus
2. What does DNA do for your cells? it's the instructions for
making proteins, which are the building blocks of the cell.
3. Does everyone have the exact same DNA? Explain. No, we all
have different traits, so the DNA instructions are different.
4. What 2 molecules make up the backbone of DNA?
Deoxyribose sugar and phosphate
5. What do we call the "steps" or rungs on the DNA ladder?
Nitogen bases
6. How many different types of "steps" molecules are there?
2 types --> A-T and C-G
Bellringer #2
1/22/24
Remember to either write down the question or rewrite your answer in a
complete sentence in the Bellringers section of your notebook.
1. Describe a double helix shape.
2. Name the 4 nitrogen bases that make up the steps or rungs of the
DNA ladder.
3. If you had only one side of a piece of DNA, could you figure out the other
side? Explain.
4. What 2 molecules make up the backbone of DNA?
5. What do we call the "steps" on the DNA ladder?
6. How many different types of "steps" molecules are there?
Edible DNA
○
○
○
○
○
Put away everything but a pen or pencil.
Choose a partner. Put your stuff next to
them.
Go wash your hands.
■
One of you will pick up 12 toothpicks, 2
red vines, and a paper towel
■
The other of you will pick up a cup and 9
of each color of marshmallows
Take them all back to your desk and get
started building
DO NOT THROW AWAY CUP!!
Bellringer #3
1/23/24
Turn in your Edible DNA questions WS to the Inbox
Have your "Nucleic Acids Reading Activity" out to review.
Remember to either write down the question or
rewrite your answer in a complete sentence.
1. What is a nucleotide and what are its main parts?
2. What structure does DNA resemble and what is it called?
3. What are the 4 bases of DNA and how do they pair up?
Bellringer #3
1/23/24
ANSWERS
Remember, write the question or rewrite your answer in a complete sentence.
1. What is a nucleotide and what are its main parts?
The building block, or unit, of DNA
Deoxyribose sugar, phosphate, and nitrogen base
2. What structure does DNA resemble and what is it called?
A twisted ladder, called a double helix
3. What are the 4 bases of DNA and how do they pair up?
Adenine, Guanine, Cytosine, Thymine
T-A and
G-C
Bellringer #4
1/24/24
or
1/25/24
1. Where is DNA located and how does it fit in there?
2. How do just 4 bases account for all the variety of life?
3. How do you think mutations happen?
Bellringer #4
1/24/24
or
1/25/24
ANSWERS
1. Where is DNA located and how does it fit in there?
The nucleus, it's a skinny molecule and it coils up! =)
2. How do just 4 bases account for all the variety of life?
They are organized in a different order, just like the letters in
words can be reorganized to spell many different words.
3. How do you think mutations happen?
The wrong nucleotide accidentally gets attached in the
wrong place in a strand of DNA
1/24/24
or
1/25/24
DNA Check-In Quiz
●
●
●
Get out a pencil
Put everything else away and under your desk
Sit quietly and wait for your quiz
Bellringer #5
1/26
Turn in your Amoeba Sisters, if finished – due Mon.
Reminder: write down the question or include the question in your answer.
Attach this with your bellringer --> A
B
1. Name the process the image
is showing.
2. Which letter is showing that parent/old strand?
3. Which letter is showing the new/daughter strands?
4. When is the Unit 7 Test?
5. What should you study?
C
Bellringer #6
10/29
Turn in your Amoeba Sisters to the Inbox (if you didn't Fri.)
Pick up handouts
Reminder: write down question or include the question in your answer.
1. How many pairs of chromosomes do you have in each of the
trillions of cells of your body?
2. How are chromosomes named?
3. What 2 chromosomes do YOU have for your 23rd pair?
4. What do we call the picture of all of the organized, matched
up chromosomes from one cell?
5. What is a centromere?
Bellringer #6
(Answers)
10/25
Remember to either write down the question or
rewrite your answer in a complete sentence.
1.How are chromosomes named? By their number #1-#22
2.How many pair of chromosomes do you have? 23 pairs
3.What 2 chromosomes do YOU have for your 23rd pair? XX
(if you’re a girl) or XY (if you’re a boy)
4.What do we call the picture of organized, matched up
chromosomes? A karyotype
5.What is a centromere? The pinched-in area near the center
of a chromosome where the 2 chromatids attach.
Bellringer
1/30
Add to your notebook table of contents:
1/30 Amoeba Sisters: Chromosomes and Karyotypes 98
Open up your notebook to pg. 98.
Title it: Amoeba Sisters: Chromosomes and Karyotypes
Copy these 3 questions (spread them out, this is all you will
put on this page):
1. What is a chromosome?
2. What is a karyotype?
3. 3 other interesting facts
Bellringer
1/30
ANSWERS
Amoeba Sisters: Chromosomes and Karyotypes
Copy these 3 questions (spread them out, this is all you will
put on this page):
1. What is a chromosome? DNA coiled and wrapped up
2. What is a karyotype? A picture of your chromosomes
3. 3 other interesting facts
Review Day!
●
●
●
●
●
1/31/24
Pick up a grade sheet, a handout, and a laptop
Add to your Notebook Table of Contents:
1/22 Edible DNA Background/Questions
1/31 Karyotype Practice Webquest
Attach gradesheet
Attach Webquest to pg 100
Go to Teams, and Start the Webquest
99
100
Test Day!
●
●
●
●
●
●
1/2/24
Pick up and attach a grade sheet at the bottom of your
Table of Contents
Turn in your notebook to the front table.
Get out a pencil.
Put everything else away and under your desk.
Sit quietly and wait for your test.
Read this verse and take a
deep breath. You can do it!!
Test Day!
●
●
●
●
●
1/2/24
Turn in your notebook to the front table.
Pick up a test answer sheet.
Subject: Unit 7: DNA Test
Get out a pencil, put everything
else away, off your desk.
Sit quietly and wait for your test.
Read this verse and take a
deep breath. You can do it!!
When you finish with the Test:
●
●
●
Turn in your test to the folder in front
Sit quietly until everyone is finished.
Things you can do:
○
Silently thank God for this beautiful day, your life, and
everyone in it!
○
Complete an extra credit crossword or Origami DNA
○
Put your head down and rest
○
Homework from another class