IB Cell structure 1.1 and 1.2

Match the following

• Nucleus

• 
• Chloroplast

• 
• Mitochondrion

• 
• Golgi body

• 
• Rough Endoplasmic reticulum

• 

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

Label this lymphocyte (white blood cell that makes antibodies)

b

c

d

g

h

i

j

a

Centrioles

Nucleus

Golgi body

Mitochondron

Cell wall

Vesicle/lysosome

Cytoplasm

Chloroplast

Plasma membrane

Rough endoplasmic reticulum

Label this prokaryotic cell

c

b

d

e

f

g

h

i

j

Plasmid

Cell wall

70S ribosomes

Slime capsule

Flagellum

80S ribosomes

Plasma membrane

Cytoplasm

Nucleoid region

Pilus

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

A cell contains chloroplasts, a plasma membrane and 80S ribosomes. What type of cell could it be?

• A. Bryophyte

  (Moss)

• B. Lymphocyte

• C. Prokaryote

• D. Neuron

The images of the radiolarian, a single-celled marine organism, were produced using a light microscope (left) and a scanning electron microscope (right). What is a reason for the difference in quality of these images?

• A. Light cannot pass through the specimen.

• B. Higher magnification can be achieved with the electron microscope.

• C. The resolution of the electron microscope is higher.

• D. Samples are stained with methylene blue when viewed with the light microscope.

The micrograph of a section through a plant stem shows at least ten different types of cells. What explains the differences between these cells?

• A. Only one gene is expressed in each cell type.

• B. Different genes are expressed in each cell type.

• C. Only useful genes remain in the DNA of each cell type.

• D. Changes in the DNA sequence take place when these cells develop.

Two cells have the given characteristics. Which deduction is supported by this information?

• A. Both cells are from plants.

• B. Cell I is more complex than cell II.

• C. Cell II is an animal cell.

• D. Cell I is prokaryotic.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

In mammals, mature red blood cells are specialized in that they lack nuclei, mitochondria or ribosomes. Which statement applies to red blood cells?

• A. No chemical reactions take place within their cytoplasm.

• B. They cannot produce new enzymes.

• C. Materials cannot enter red blood cells.

• D. Materials cannot exit red blood cells.

Which living structure is an exception to the cell theory?

• A. Striated muscle fibres

• B. A single-celled alga carrying out all of the functions of life

• C. The artificial synthesis of the organic molecule urea

• D. A multicellular organism with cells undertaking specialized roles

What function is performed by the part of the cell shown in the electron micrograph?

• A. Locomotion

• B. Synthesis of proteins

• C. Movement of chromosomes

• D. Breakdown of cellular organelles