Cell Biology Questions
Explore questions in the Cell Biology category that you can ask Spark.E!
What does the electron transport chain produce?
Out of the three stages of cellular respiration which stage does fermentation also go through.
What two products of the light reactions are used up in the calvin cycle?
how are high energy electrons transported from light to dark reactions?
When was the first compound microscope invented
Who came up with the idea that all cells come from preexisting cells
The function of cellular respiration is to __________produce carbohydratesreduce CO2extract CO2 from the atmosphereextract usable energy from glucosesynthesize macromolecules from monomers
In the citric acid cycle, for each pyruvate that enters the cycle, one ATP, three NADH, and one FADH2 are produced. For each glucose molecule that enters glycolysis, how many ATP, NADH, and FADH2 are produced in the citric acid cycle?About 38 ATPTwo ATP, six NADH, two FADH2One ATP, three NADH, one FADH2Four ATP, six NADH, two FADH2Three ATP, three NADH, one FADH2
Which of the following environments or actions would not affect the rate of an enzyme reaction?-None of the listed responses is correct.-pH-Cooling the enzyme-Heating the enzyme-Substrate concentration
Beginning within the nucleus, the first step leading to the synthesis of a polypeptide is _____.1. translation of an RNA nucleotide sequence into a sequence of amino acids2. linking of nucleotides to form a polypeptide3. removal of introns from RNA and the stitching together of exons4. translation of a DNA nucleotide sequence into a sequence of amino acids5. transferring of information from DNA to messenger RNA
Mitochondria are found in _____.1. animal cells only2. plant cells only3. all cells4. animal cells and prokaryotic cells, but not plant cells5. plant and animal cells
Oxygen gas (O2) is one of the strongest oxidizing agents known. The explanation for this is that __________.the oxygen atom is very electronegativeoxygen gas contains a double bondoxygen acts as the final electron acceptor in cellular respirationoxygen is so abundant in the atmosphereoxygen gas is composed of two atoms of oxygen
Glyceraldehyde-3-phosphate (G3P) is produced in the stroma of chloroplasts. Which of the following statements is most accurate regarding this compound?-For every three molecules of CO2 reduced in the Calvin cycle, six molecules of G3P are formed but only one of these molecules exits the cycle to be used by the plant cell.-For every three molecules of CO2, six molecules of G3P are formed but five molecules must be recycled to regenerate three molecules of RuBP-It is produced from glucose during glycolysis.-It is a three-carbon sugar.-All of the listed responses are correct.
In the Calvin cycle, CO2 is combined with __________.-a five-carbon compound to form an unstable six-carbon compound, which decomposes into two three-carbon compounds-two two-carbon compounds to form a five-carbon compound-a five-carbon compound to form a stable six-carbon compound that can be converted directly to glucose-a seven-carbon compound to form two four-carbon compounds=a two-carbon compound to form a three-carbon compound
During photosynthesis in chloroplasts, O2 is produced from __________ via a series of reactions associated with __________.CO2 ... both photosystem I and the Calvin cycleCO2; the Calvin cycleH2O; photosystem ICO2; photosystem IIH2O; photosystem II
What is the function of a bacterium's capsule?1. protein synthesis2. DNA storage3. propulsion4. protection5. adhesion
_____ are surface appendages that allow a bacterium to stick to a surface.1. Ribosomes2. Mitochondria3. Fimbriae4. Flagella5. Cell walls
Rubisco is __________.-the enzyme that forms a four-carbon compound in CAM photosynthesis-the enzyme responsible for splitting H2O to produce O2 in photosynthesis-the first stable intermediate in C4 photosynthesis-the five-carbon sugar molecule that reacts with CO2 to begin the Calvin cycle-the enzyme in plants that captures CO2 to begin the Calvin cycle
Which of the following statements correctly describes the relationship between the light reactions and the Calvin cycle?-The light reactions produce carbon dioxide and water, both of which are used in the Calvin cycle.-The light reactions produce carbon dioxide, ATP, and NADPH, all of which are used in the Calvin cycle.-The light reactions produce ADP and NADP+, both of which are used in the Calvin cycle.-The light reactions produce ATP and NADPH, both of which are used in the Calvin cycle.-The light reactions produce water, ATP, and NADPH, all of which are used in the Calvin cycle.
Of the following, which occurs during the Calvin cycle?-Light energy is converted to chemical energy.-ATP and NADPH are synthesized.-CO2 is reduced.-Excited electrons are conveyed from chlorophyll to an electron acceptor.-Photons are absorbed.