U1 B1+B2 Revision

Multiple Choice

What is the 3rd letter of the alphabet?

• A

• B

• C

• D

Multiple Choice

The cell theory applies to all organisms, including the five shown. Which of the following statements describes how these organisms are an example of the cell theory?

• The organisms have cells that lack a nucleus.

• The organisms are made of one or more cells.

• The cells of the organisms undergo photosynthesis.

• The cells of the organisms are identical to each other.

Open Ended

What are the other 2 fundamentals of cell theory?

Open Ended

What are the 5 levels of organisation in a multicellular organism?

Fill in the Blanks

Which numbered cellular structure in the cell provides external support as well as protection for the cell?

Open Ended

Explain how the structure of the cell membrane contributes to its function in regulating the movement of substances into and out of the cell.

Open Ended

How is cell ultrastructure studied?

Light Microscope

Uses visible light and magnifying lenses to observe small objects


Has low resolution and magnification


Requires staining, e.g., methylene blue

Multiple Choice

What is the conversion of 30 cm to nm?

• 3 x 10^6 nm

• 3 x 10^7 nm

• 3 x 10^8 nm

• 3 x 10^9 nm

Multiple Choice

What does the triangle diagram represent in measuring specimens?

• Image (I)

• Actual (A)

• Magnification (M)

• All of the above

Fill in the Blanks

What cell structure are you looking at?

Multiple Choice

Which of these is the best model of a prokaryotic cell?

• A

• B

• C

• D

Fill in the Blanks

Label _ is likely the Cell Wall.

Open Ended

What are 2 structural differences between gram positive and gram negative bacteria?

Multiple Select

Which of the following are steps in the gram staining process?

• Application of crystal violet

• Application of iodine

• Alcohol wash

• Application of safranin

Open Ended

Which order do they go?

Multiple Choice

During a gram-stain test- a bacteria dyes purple. This means:

• It is gram-positive & has a thick cell wall

• It is gram-negative & has a thick cell wall

• It is gram-positive & has a thin cell wall

• It is gram-negative & has a thin cell wall

Multiple Choice

What is the primary reason gram-negative bacteria are resistant to certain drugs and antibiotics?

• Their double plasma membrane

• Their size

• Their reproduction rate

• Their colour

Open Ended

Each body cell contains the same genetic information, but can differ in appearance and size. The diagram below shows three different types of cells found in the human body.

A. Identify one similarity, other than the genetic information, that these body cells have.

B. Explain why differences in these human body cells are a biological advantage.

Multiple Choice

These diagrams show a variety of cells from the same organism.

How can cells from the same organism have such different shapes and functions?

• As each cell differentiates, the DNA changes so that each type of cell has different

• Mutations in the cells’ nuclei lead to new combinations of DNA, resulting in different shapes and functions in the different types of cells.

• During differentiation, different parts of the DNA in each type of cell are activated, resulting in the different structure and function of the cells.

• During differentiation, different types of cells produce proteins which destroy the nonactive DNA, leading to cell specialization.

Open Ended

If a cell has no nucleus and a cell wall what type of cell would it be: a plant cell, bacterial cell, or animal cell?

Open Ended

Found in plant leaves and involved in photosynthesis.

Open Ended

Name one adaptation of a palisade mesophyll cell and its purpose.

Open Ended

Located in the roots of plants, near the growing tip, and help to increase water uptake.

Open Ended

Name one adaptation of a root hair cell and its purpose.

Open Ended

A gamete that moves to the egg cell.

Open Ended

Name one adaptation of a sperm cell and its purpose.

Open Ended

A gamete that is fertilised by a sperm cell and provides nourishment to the resulting zygote.

Open Ended

Name one adaptation of an egg cell and its purpose.

Open Ended

Ingests and destroys pathogens as part of our immune system.

Open Ended

Name one adaptation of a neutrophil and its purpose.

Open Ended

Associates with oxygen via haemoglobin to carry it around the blood and transport it to respiring cells.

Open Ended

Name one adaptation of red blood cells and its purpose.

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident