Cell Theory

Multiple Choice

Which of the following is NOT one of the seven basic functions of life carried out by all living things?

• Metabolism

• Reproduction

• Photosynthesis

• Homeostasis

Multiple Choice

Which of the following is NOT one of the three basic tenets of cell theory?

• All living things are composed of cells

• Cells only arise from pre-existing cells

• The cell is the smallest unit of life

• Cells can spontaneously generate from non-living matter

Open Ended

Explain how the structure of a cell supports its function in maintaining an internal environment optimized for metabolism.

Multiple Select

Select all the statements that correctly describe atypical cell structures.

• Striated muscle fibres are multinucleated.

• Aseptate fungal hyphae have internal partitions between cells.

• Sieve tube elements share metabolic functions through plasmodesmata.

• Red blood cells retain their nuclei throughout their lifespan.

Multiple Choice

Which of the following cell types is multinucleated and consists of cells fused into a single fibre?

• Aseptate fungal hyphae

• Striated muscle fibre

• Sieve tube element

• Red blood cell

Fill in the Blanks

Cells and their components are usually measured in

or nanometres.

Open Ended

Compare the advantages and disadvantages of using light microscopes versus electron microscopes for studying cells.

Multiple Choice

Which type of electron microscope would you use to generate a surface rendering of a specimen?

• Transmission electron microscope

• Scanning electron microscope

• Light microscope

• Cryogenic electron microscope

Fill in the Blanks

Fill in the blank: The magnification of an image is calculated using the formula Magnification = Image Size ÷

.

Open Ended

Explain the importance of using the same units when calculating magnification or actual size in microscopy.

Multiple Select

Which of the following are correct formulas for calculating magnification, actual size, and image size in microscopy?

• Magnification = Image Size ÷ Actual Size

• Actual Size = Image Size ÷ Magnification

• Image Size = Actual Size × Magnification

• Magnification = Actual Size ÷ Image Size

Open Ended

Reflecting on today's lesson about the functions of life, which function do you think is the most important for the survival of an organism, and why?

Multiple Choice

Which of the following is NOT one of the seven basic functions of life listed in the slide?

• Metabolism

• Photosynthesis

• Homeostasis

• Excretion