Form6T1C2: STRUCTURE OF CELLS AND ORGANELLES

Bounded by a plasma membrane.

They do not have a membrane-bounded nucleus.

Usually have a cell wall and ribosome.

May have flagella.

• Prokaryotic cells

• Eukaryotic cells.

• Ukayotic cells.

• Pokayotic cells

Have a membrane-bound nucleus and cytoplasm.

Fluid component of the cytoplasm is the cytosol.

• Proqaryotic cells

• Ekaryortic cells

• Eukaryotic cells

• Prokaryotic cells

Which of the following characteristics is not shared by prokaryotes and eukaryotes?

[STPM 2006/P1/Q5]

^{(Please refer to Ace Ahead STPM Biology First Term Third Edition/Chapter 2/page 46)}

• Genetic code

• Mechanism for photosynthesis

• Nucleus separated from cytoplasm

• Mechanism for transcription and translation

Site for the synthesis of lipids and detoxifying enzymes.

• Rough ER

• Smooth ER

The Golgi apparatus consists of stack of flattened membranous sacs called _____.

• cytosol

• cisternae

• cristae

• stroma

Which of the following statements about prokaryotic cell is correct?

• The cell has smooth and rough endoplasmic reticulum.

• The cell wall is made up of chitin.

• The DNA is linear.

• The cytoplasm has a simple protein network.

The ________ provides structural support and functions in cell movement, including transport of materials in the cell.

• cytoskeleton

• centriole

• xylem

• phloem

The epithelial tissue that is found in the intestinal lining is

• Stratified squamous

• Simple squamous

• Columnar

• Cuboidal

The functions of the centrioles is

• to hold together the sister chromatids of a chromosome

• to break down the nuclear membrane

• to help in the pairing of homologous chromosomes

• to organise the microtubules to form spindle fibres

Which of the following is the reason that the pH of the intermembrane space is lower than that of the matrix of the mitochondria?

• Due to high concentration of H⁺ because of chemiosmosis

• Due to high concentration of pyruvic acid in the matrix

• Due to high concentration of ATP

• Due to the accumulation of lactic acid during anaerobic respiration