17. Functions of the nucleus include
a. directing the function of the cell
b. the partial assembly of ribosomes
c. storing most of the hereditary information of the cell
d. all of the above
D?
18. Internal membrances play important roles in protien production and processing except they do NOT
a. anchor ribosomes in place
b. transport substances to different areas
c. contain the hereditary information for the protein
d. modify proteins to go into vesicles
C?
19. Which of the following is NOT true about mitochondria?
a. It is where most of the organism's ATP is used
b. they have their own DNA
c. Muscle cells have many mitochondria
d. The inner membrane has a large surface area
B?
20. Identify the correct flow of energy through a living system.
a. sunlight, volcanic vent, prokaryote
b. sunlight,grass, caribou
c. plankton, sunlight, whale
d. grass, mouse, rabbit
B?
Thanks
-MC
17. The correct answer is d - all of the above. The functions of the nucleus include directing the function of the cell by controlling gene expression, the partial assembly of ribosomes by synthesizing ribosomal RNA, and storing most of the hereditary information of the cell in the form of DNA.
To answer this question, you can recall the functions of the nucleus and see which options align with those functions. You can also refer to your textbook or lecture notes to find the information.
18. The correct answer is c - contain the hereditary information for the protein. Internal membranes play important roles in protein production and processing, such as anchoring ribosomes in place, transporting substances to different areas, and modifying proteins to go into vesicles. However, they do not contain the hereditary information for the protein, as that information is stored in the DNA within the nucleus.
To answer this question, you need to know the roles of internal membranes and identify the option that does not align with those roles. You can find this information in your textbook or lecture notes.
19. The correct answer is a - it is where most of the organism's ATP is used. Mitochondria are known as the "powerhouses" of the cell because they are the primary sites of ATP (adenosine triphosphate) production, which is the main source of energy for cellular activities. They have their own DNA, muscle cells have many mitochondria to support energy-demanding activities, and the inner membrane of mitochondria has a large surface area to accommodate the enzymes involved in ATP production.
To answer this question, you can recall the characteristics and functions of mitochondria, or refer to your textbook or lecture notes for more details.
20. The correct answer is b - sunlight, grass, caribou. This is the correct flow of energy through a living system in the context of a food chain. Sunlight provides energy to plants (grass) through photosynthesis. Caribou consume the plants, transferring the energy from the grass to themselves. This demonstrates the flow of energy from one trophic level to the next.
To answer this question, you need to understand the concept of energy flow in a food chain and identify the correct sequence of organisms involved. You can find this information in your textbook or lecture notes.