Skip to content
Back to quiz
6. The Golgi Apparatus is:
- System of membranes where cisternae synthesise steroids and lipids.
- A stack of cisternae wih small vesicles that transport and modify proteins
- A system of membranes throughout cell that form cisternae which transport and modify proteins made by Ribosomes.
7. During Prophase:
- Chromosomes become visibile and undergo supercoiling. Two chromatids are held by centromere and nuclear membrane breaks down.
- Centromeres divide and spindle fibres contract, pulling chromatids to opposite poles and become chromosomes.
- Nuclear membranes form and uncoiling occurs.
- Centrioles appear and move towards opposite ends of the cell. Microtubules in the cytoplasm start to form spindles.
8. Membrane proteins have various functions such as:
- Catalysts of reactions as contain enzymes
- Act as binding sites for proteins for attachment to hormones etc.
- Cell to Cell recognition & adhesion of cells
- Electron Carriers due to chains of proteins allowing electrons pass across membrane
- Receptor sites for chemical signals
- "All of the above"
- Channels for transport of metabolites of water by pumps and pores
9. What is so different about stem cells in regards to Differentation?
- Stem cells retain the ability to divide along various paths
- Stem cells retain the ability to divide along one specific path
- Stem cells lose the ability to divide across various pathways.
10. Motile Organelles in Eukaryotes can be:
- Cilia/Flagella with larger diameters than in Prokaryotes
- Cilia/ Flagella with smaller diameters than in Prokaryotes
- Flagella with smaller diameters than in Prokaryotes
11. Active Transport is:
- Highly Selective and is along concentration gradient
- Highly Selective, Involves ATP and is against the concentration gradient
- Non-Specific, Involves ATP and is against concentration gradient
12. When a cell undergoes specialisation this is known as_______ and the process is controlled by ________
- Differentation & Stem Cells
- Differentiation & Genes
- Differentiation & DNA Polymerase
13. Interphase involves:
- G1, Synthesis , Mitosis & G2
- G1, Synthesis of DNA & G2
- G1 &G2
14. Movements by Globular or Carrier Proteins involve:
- Reactions with Enzymes to operate the pump.
- Reactions with ATP to change the shape & position of the pump molecules
- Reactions with ATP to break open pump pores.
15. Pili are:
- Self replicating loops of DNA with key functions and few genes
- Numerous fine protein rods involved with attachment
- Simple wave shaped hollow cylinders involved in locomotion
16. Ribosomes in a Prokaryotic Cell are:
- Found only in the cytoplasm and are 70S in size.
- Found only in the cytoplasm and are 80S in size.
- Found in the Endoplasmic Reticulum & Cytoplasm and are 90S in size.
17. Bulk Transport involves:
- Simple & Facilitated Diffusion of molecules/ions.
- Movement of Vesicles across a membrane known as cytosis
- The modification and construction of Vesicles
18. Glycoproteins are extracellular components;
- that are involved in the construction of Ribosomes.
- That allow cell adhesion and the formation of compact tissues & organs.
- That allow the cell to develop a high internal pressure so it can support it's own weight
19. DNA in prokaryotes is:
- Is in the nucleus without a distinct nuclear membrane
- in the form of circular strand that is "naked"
- Is in the nucleus and is surrounded by a distinct nuclear membrane
20. During Metaphase:
- Cytoplasm divides producing two new identical daughter cells.
- Centrioles appear and move towards opposite ends of the cell. Microtubules in the cytoplasm start to form spindles.
- Centromeres divide and spindle fibres contract, pulling chromatids to opposite poles and become chromosomes.