Reference no: EM133432441

Question

1. Which of the following is TRUE regarding Mitochondria?

a. They are found in animals but not plants.

b. Mitochondria have DNA in their matrix but it isn't used for gene expression.

c. They are found in both plants and animals but not archaea or bacteria.

d. All cells have the same number of mitochondria.

e. Mitochondria have one single membrane whereas chloroplasts have 2 distinct membranes.

2. Which cytoskeletal protein associates with kinesin to move vesicles within the cell?

a. Myosin

b. Actin

c. Intermediate filaments

d. Microtubules

3. In eukaryotes, how are flagella and cilia different?

a. Flagella are made of microtubules and cilia are made of actin

b. Flagella are longer with only one or a few per cell; cilia are shorter and usually present in high numbers on a cell.

c. Flagella are only found in animal cells where they are used for motility; cilia are more commonly found on plant cells where they are used in cell communication and signaling.

d. Both structures contain microtubules, but their internal arrangement and organization is entirely different in each.

e. Both structures contain actin, but their internal arrangement and organization is entirely different in each.

4. A plant living in the desert would have

a. an absence of cholesterol.

b. an increased amount of saturated fatty acids.

c. an increased amount of peripheral membrane proteins linked to the cytoskeleton.

d.an increased amount of unsaturated fatty acids.

5. In experiments with liposomes, the addition of what lipid caused the formation of lipid rafts?

a. Saturated phospholipids

b. Cholesterol

c. Sphingomyelin

d. Unsaturated phospholipids