Unit 4 Remediation/ Reteach

​Unit 4 Remediation/ Reteach

By Kaylan Vicha

Question 1

The following was a question on your test. Read over it and complete the next few slides.

Students observe onion cells from a tip of the root with a light microscope while studying mitosis.





Which statement best identifies why students
would observe the root tip of onion
to see the stages of mitosis?

Multiple Choice

Lets break the question down. What is the purpose of mitosis?

• Interphase

• DNA Replication

• Cell Division

• Photosynthesis

Multiple Select

Why would cell division be needed for a cell? Select 2

• Help an organism grow

• Produce oxygen

• Repair old or damaged cells

• Regulate what enters and exits the cell

Multiple Choice

Based off the previous two questions what would be the best answer to the test question.

Which statement best identifies why students would observe the root tip of onion to see the stages of mitosis?

• The tip of the root is where photosynthesis is taking place.

• 
  The tip of the root is where the plant is doing the most growing. 

• The tip of the root is where the most water is being absorbed.

• The tip of the root is where sexual reproduction is occurring.

Question 2

The following was a question on your test. Read over it and complete the next few slides.

Scientist determined the total mass of DNA from a sample of animal cells. The masses of equal numbers of cells were taken during three different stages of the cell cycle. Stage I contains cells massed during G₁ of the cell cycle.






Which statement best describes the cell during Stage II ? 

Multiple Choice

Lets break this question down.

What part of the cell cycle is G1 phase a part of?

• Cytokinesis

• Mitosis

• Interphase

• None of these

Multiple Select

Based off the previous question what are the other two parts of interphase? Select 2

• S phase

• G2

Multiple Choice

The longest part of interphase is S phase, what is occurring during that time?

• Growth

• DNA replication

• Cell Division

• Osmosis

Multiple Choice

After answering the last 3 questions, what would be the best answer for the test question using the image?

Which statement best describes the cell during Stage II ? 

• The cells have completed mitosis and cytokinesis without replicating their DNA.

• The cells have replicated their DNA and completed mitosis and cytokinesis.

• The cells have replicated their DNA, but not completed mitosis and cytokinesis.

• The cells have temporarily exited the cell cycle without replicating their DNA.

Question 3

The following was a question on your test. Read over it and complete the next few slides

Based off the reading explain the process the sunflower is going through including the end result of this process

Multiple Choice

Lets find the main point of this reading. After the florist cuts the stem of the sunflower, what does the sunflower do to protect itself?

• Expose it to pathogens

• Seal off the damaged area and try to repair the cellular structure.

• Disrupt the flow of nutrients.

• None of these

Multiple Choice

Based on what we have learned this unit what process is responsible for the growth and repair of old or damaged cells?

• Mitosis

• G1 Phase

• S Phase

• G0 Phase

Multiple Choice

What is the end result of mitosis/ cell division?

• A tumor

• Four identical cells

• Two genetically different cells

• Two identical daughter cells

Multiple Choice

After answering the previous questions what is the best answer to the test question below.

Based off the reading explain the process the sunflower is going through including the end result of this process?

• The sunflower is going through mitosis to produce two healthy identical cells.

• The sunflower is going through the cell cycle unregulated producing two identical cells

• The sunflower is going through DNA synthesis to produce 5 different cells.

• The sunflower is going through apoptosis, and destroying all cells as the result.

Question 4

The following was a question on your test. Read over it and complete the next few slides

The intestine is lined with many fingerlike structures called villi, which allow increased absorption of digested materials. The cells within a villus change position and migrate as they mature. Each cell then dies and is sloughed off. For each of three locations within villi, the table shows the number of cells that are undergoing a cellular change called apoptosis, or programmed cell death.








Based on the information in the table, how does apoptosis LIKELY affect cells?
Apoptosis is a normal cellular process that ______cells. A cell may enter apoptosis ________. Without apoptosis, the cell may ___________.

Multiple Choice

What is the purpose of apoptosis?

• To regulate the amount of oxygen in the cell

• To destroy damaged cells

• To produce damaged cells

• None of these

Multiple Select

Why would a cell go through apoptosis? Select 2

• Error during DNA replication

• Cytokinesis

• Failed a checkpoint

• Protein Synthesis

Multiple Choice

If a cell failed the checkpoint and skipped over it, the cell would continue the cycle _____________.

• Prokaryotic

• Regulated

• Unregulated

• Controlled

Multiple Choice

Continuing the cell cycle unregulated could lead to ________.

• DNA

• Disruptions

• Proteins

• Cancer

Multiple Choice

Which answer choice would best fill in the blanks to the statement below?

Apoptosis is a normal cellular process that __1___cells. A cell may enter apoptosis ____2___. Without apoptosis, the cell may _____3_____.

• 1) become cancerous

  2) repairs DNA

  3) destroys

• 1) destroys

  2) repairs DNA in

  3) reduce its metabolism

• 1) destroys

  2) before it produces DNA for new daughter cells

  3) become cancerous

• 1) repairs DNA

  2) destroys

  3) become cancerous

Question 5

The following was a question on your test. Read over it and complete the next few slides

While walking through a forest, you notice a tree with a large lump growing on its trunk. A scientist explains that bacteria infected the tree’s cells and caused a mutation within the cells. The cells grew into a large clump which creates a visible bump in the tree's trunk.
Based on what you know about how cells grow and divide, answer the following questions.

1. What is the clump of cells referred to as?

2. How is the cell cycle affected in this portion of the tree?

Multiple Choice

If the cell continues through the cycle unregulated a mass of cells called a _______ could form?

• Turgor Pressure

• Tuberculosis

• Tumor

• None of these

Multiple Select

Because a tumor formed on the tree the cell cycle for those cells are dividing _____ and _________. (Select 2)

• Rapidly

• controlled

• Unregulated

• mitosis

Question 6

The following was a question on your test. Read over it and complete the next few slides

The diagram below represents the cell cycle.




When cells leave the cell cycle, they can enter G0 phase, a quiescence period. Most normal cells can leave G0 phase and reenter the cell cycle at G1 phase before entering S phase.

Cancer cells are different because they cannot enter G0 phase. Due to this, predict what is going to happen to the cell if it can not enter G0? 

Multiple Choice

If cancer cells are unregulated and skip G0, predict what is going to happen to the cell if it can not enter G0?

• The cell might fail to complete S phase

• The cell might mutate during G1 phase

• The cell might repeat the cell cycle continuously

• The cell might die after completing mitosis

Multiple Choice

Do cancer cells go through the cell cycle regulated or unregulated?

• Unregulated

• Regulated

Multiple Choice

In G0 the cell ins in quiescence, which means the cell is _______?

• Multiplying

• Replicating

• Resting

• Dividing

Question 7

The following was a question on your test. Read over it and complete the next few slides

Drag your answers to the fill in the blank box.
Word Bank: Enzymes, Nucleic Acids, Carcinogen, Tumor, Mutated, Benign, Cancerous

In the cell cycle, a cell's DNA can be _____________  if it comes into contact with a substance that changes the DNA within the cell. The cell can create a growth called a ___________ . This growth will be considered___________ if it does not spread or it will be ___________  if the mutated cells can spread to other types of cells. If the cell goes through rapid growth or spreads to other organs, the substance that caused the mutation is known as a ___________ .

---

Multiple Choice

What is a change in the sequence of DNA called?

• Mitosis

• Mutation

• Meiosis

• Mitochondria

Multiple Choice

If the cell continues through the cycle unregulated a _______ could form?

• Turgor Pressure

• Tuberculosis

• Tumor

• None of these

Multiple Choice

Nat all tumors are bad what type sounds like "be nice"?

• Malignant

• Benign

Multiple Choice

A malignant tumor can spread from its original site invading other cells. What term best describes a malignant tumor?

• Cell cycle

• Cancerous

• Non cancerous

• None of these

Multiple Choice

Substances like round up, asbestos, cigarette smoke are all examples of____________?

• Cell Membrane

• Cancer

• Carcinogens

• Mitosis

Question 8

The following was a question on your test. Read over it and complete the next few slides

Below is a normal DNA sequence and a mutated version of it. Examine the sequences and drag the correct labels to the correct locations to explain the effects of the mutation.

Normal DNA sequence:
TAC | GAA | TGG | CTA | GTC

Mutated DNA sequence:
TAC | GAT | GGC | TAG | TC

The mutation shown is a_________  mutation. As a result, the codon reading frame is _______, changing the entire ______?

Multiple Choice

Count how many bases are in this Normal DNA sequence:
TAC | GAA | TGG | CTA | GTC

• 18

• 41

• 29

• 676

Multiple Choice

How many bases are in the mutated DNA sequence:
TAC | GAT | GGC | TAG | TC

• 2

• 777

• 17

• 10

Multiple Choice

What type of mutation takes away a base?

• Insertion

• Deletion

• Substitution

• Non-disjunction

Multiple Choice

A small section of DNA is called a ________?

• Mutation

• Genie

• Gene

• Chromosome

Multiple Choice

Which answer choice best fills in the blanks?

The mutation shown is a_________  mutation. As a result, the codon reading frame is _______, changing the entire ______?

• 1) deletion

  2) shifted

  3) gene

• 1) insertion

  2) the same

  3) gene

Question 9

The following was a question on your test. Read over it and complete the next few slides

Students used poster board to construct this model of a section of DNA.







Based off of the model, conclude if this model is accurate or inaccurate and explain what is occurring. 

Multiple Choice

When replicating DNA the complementary letter that goes with the base A is?

• C

• T

• G

Multiple Choice

When replicating DNA the complementary letter that goes with the base C is?

• G

• A

• T

Multiple Choice

What is a change in the sequence of DNA called?

• Mitosis

• Mutation

• Meiosis

• Mitochondria

Multiple Choice

Based off of the model, conclude if this model is accurate or inaccurate and explain what is occurring. 

• The model is inaccurate because the incorrect base pairs represent a mutation

• The model is accurate because it contains correctly paired bases

• The model is accurate because it shows each base splitting to form a  double helix

• The model is inaccurate because some typical bases in DNA are missing