Investigate and explain cellular processes, including homeostasis, energy conversions, transport of molecules, and synthesis of new molecules.
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Q 1/12
Score 0
Which molecule synthesized by plants is a major source of energy for cellular processes in both plants and animals?
30
Nucleic acid
Chlorophyll
Wax
Glucose
Q 2/12
Score 0
The picture shows a contractile vacuole of a unicellular freshwater organism. The contractile vacuole regulates the flow of water into and out of the cell in an aquatic environment. What conditions cause the contractile vacuole to fill with water?
30
The temperature of water in the vacuole is lower than the temperature of its environment
The concentration of water inside the cell is the same as the concentration outside the cell
The concentration of water is greater outside the cell than inside the cell
The temperature of water in the vacuole is higher than the temperature of its environment
12 questions
Q.
Which molecule synthesized by plants is a major source of energy for cellular processes in both plants and animals?
1
30 sec
B.4.B: Cellular Processes
Q.
The picture shows a contractile vacuole of a unicellular freshwater organism. The contractile vacuole regulates the flow of water into and out of the cell in an aquatic environment. What conditions cause the contractile vacuole to fill with water?
2
30 sec
B.4.B: Cellular Processes
Q.
In the early 1900s a scientist hypothesized a link between DNA and the production of proteins in the cytoplasm. However, the fact that DNA could not be found outside the nucleus led scientists to believe that another substance was also involved in the synthesis of protein in the cytoplasm. In the 1940s scientists performed an experiment that ultimately identified the site of protein synthesis. They also identified the molecule responsible for transporting information from the nucleus to the site of protein synthesis. What was this newly identified molecule?
3
30 sec
B.4.B: Cellular Processes
Q.
This diagram shows cellular activity across a cell membrane. Which two processes does this diagram most directly model?
4
30 sec
B.4.B: Cellular Processes
Q.
Cells can generate as many as 36 to 38 molecules of adenosine triphosphate (ATP) from the metabolism of one molecule of glucose. Which cellular process results in this amount of ATP production?
5
30 sec
B.4.B: Cellular Processes
Q.
Some students used vinegar to dissolve away the shells of three eggs and used these eggs as models of human red blood cells. The students observed the changes in the eggs when they were placed in different solutions. Which statement best describes the role of the cell membrane in this model?
6
30 sec
B.4.B: Cellular Processes
Q.
Which group of organelles is directly responsible for the production of new molecules within a cell?
7
30 sec
B.4.B: Cellular Processes
Q.
The cellular process known as the sodium-potassium pump was discovered in the 1950s by Jens Christian Skou, a Danish scientist. This process is a form of active transport that moves three sodium ions to the outside of a cell for every two potassium ions that it moves into the cell.
Which of these best explains why energy is needed for active transport?
8
30 sec
B.4.B: Cellular Processes
Q.
Which of these statements best explains the process of energy conversion that takes place in the mitochondria?
9
30 sec
B.4.B: Cellular Processes
Q.
Which cellular process takes place in the ribosomes that are bound to the endoplasmic reticulum?
10
30 sec
B.4.B: Cellular Processes
Q.
The diagram illustrates the activity of vesicles during a cellular process. Which statement best explains the function of the vesicles?
11
60 sec
B.4.B: Cellular Processes
Q.
When mammals get an infection, their internal body temperature often rises 2 to 3 degrees Celsius. The body gets the energy it needs to react to an infection by -
