RC1-Cell Structure and Function

Felicia observed that the lettuce plants in her garden had wilted after several days of drought. The next day, there was a downpour of rain, and the leaves began to swell. What cellular process caused this effect in the lettuce plants? (a)  

• cellular respiration
• active transport
• osmosis
• photosynthesis

Tags

NGSS.HS-LS1-3

Mr. Chavez wants his class to prepare a procedure that would demonstrate cellular diffusion. Which of the following procedures would best demonstrate cellular osmosis?

• A procedure that uses the skins of potato left overnight in oil

• A procedure that uses a banana that has been left overnight in milk

• A procedure that uses a cluster of grapes left overnight in a high concentration of salt water

• A procedure that uses a 2-liter bottle filled with oil and water and left overnight

Norovirus outbreaks have caused many schools to close. Norovirus causes extreme vomiting within as little of 12 hours of exposure. The virus is spread in the air as infected individuals’ vomit. Based on this information, which reproductive cycle does norovirus most likely undergo (a)  

• Mitosis
• meiosis
• lytic cycle
• lysogenic cycle

Which of these substances stores the most energy? (a)  

• one gram of alcohol
• one gram of carbohydrate
• one gram of fat
• one gram of protein

Observe the virus and cell pictures. Each has projections that extend beyond the main structure. How are these projections used differently in viruses and protists?

• Viruses use projections to move throughout their host while protists use projections to attach to other cells.

• Viruses use projections to attach to cells while protists use

  projections to move through their environment.

• Viruses use projections to defend against the immune system while protists use projections to eat.

• Viruses use projections to allow substances to pass through the

  main structure while protists use projections for protection.

The enzymes that catalyze cellular reactions are

macromolecules called proteins. Which of the following elements most often compose proteins? (Hint: CHO, CHO, CHON, CHONP)

• carbon and hydrogen

• carbon, hydrogen, oxygen and nitrogen

• carbon, hydrogen and oxygen

• carbon, hydrogen, oxygen, nitrogen and phosphorous

Tags

NGSS.HS-LS1-6

Compared with mitosis, the process of meiosis results in daughter cells that are —

• Diploid cells with the same number of chromosomes as the parent cells.

• Diploid cells with a smaller number of chromosomes as the parent cells.

• haploid cells with the same number of chromosomes as the parent cells.

• haploid cells with a smaller number of chromosomes as the parent cells.

Tags

NGSS.HS-LS3-2

Which of the following processes is shown in the picture? (a)  

• replication
• protein assembly
• transcription
• translation

Which structures, if found in a cell, would provide the best evidence that the cell is eukaryotic? (a)  

• chromosomes
• cell walls
• carbohydrates
• internal membranes

Himalayan rabbits carry a gene that is inactive above 35 °C,

and it is most active from 15 °C to 25 °C. This produces rabbits with a specific coat coloring. In the central parts of the rabbit's body where it has the highest temperature, the gene is not active, and no pigments are produced, resulting in white fur. However, in the rabbit's ears, tip of the nose, and feet, where the temperature is much lower than 35 °C, the gene actively produces pigment which results in black fur. This experiment suggests that –

• temperature may affect the feeding habits of Himalayan rabbits

• temperature may affect gene expression in Himalayan rabbits

• Himalayan rabbits will all look identical to one another

• abnormalities among Himalayan rabbits are common