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11) In a plant cell, DNA may be found…
A. Only in the nucleus and chloroplasts
B. Only in the nucleus
C. In the nucleus, mitochondria, and chloroplasts
D. In the nucleus, mitochondria, chloroplasts, and peroxisomes
12) You have a cube of modeling Clay in your hands. Which of the following changes to the shape of pts) this cube of clay will decrease its surface area relative to its volume?
A. Stretch the cube into a long shoebox shape
B. Round the clay up into a sphere
C. Flatten the cube into a pancake shape
D. Pinch the edges of the cube into small folds
13) If you were to add one of the eight citric acid cycle intermediates to the culture medium of yeast growing in the laboratory, what do you think would happen to the rates of ATP and carbon dioxide production?
A. The rate of ATP production would decrease, but the rate of carbon dioxide production would increase
B. Rates of ATP and carbon dioxide production would probably both decrease
C. There would be no change in ATP production, but we would observe an increased rate of carbon dioxide production
D. The rates of ATP production and carbon dioxide production would both increase.
14) If glucose is the sole energy source, what fraction of the carbon dioxide exhaled by animals is pts generated by the reactions of the citric acid cycle?
A. 1/3
B. 2/3
C. 1/6
D. All of it
15) A cell with a predominance of tree ribosomes is most likely…
A. Primarily producing proteins in the cytosol
B. Constructing an extensive cell wall or extrace
C. Enlarging its vacuole
D. Primary producing protetor secretion
Relevant knowledge
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A Cell Organelle
Mitochondria are organelles of the cell that play a role in cellular respiration, where the energy released by nutrients is put into that cells use. Due to their role mitochondria are frequently referred to as”the “powerhouse” of cells.
11) DNA can be found in a plant cell’s nucleus,mitochondria and in
chloroplast.
DNA, the genetic material found in all cells, is what carries information about structures.
12)The changes in the shape of the clay cube will reduce its surface. This is relative to its volume.
13) Add one of the 8 intermediate citric acid cycles to the culture medium for yeast growing in the laboratory. The rates of ATP and carbon dioxide production will both be increase.
Citric acid does not directly produce ATP, but indirectly via NADH and FADH2. The electron carriers deposit in electron transport chains to synthesize ATP.
14)Glucose is the only energy available to animals. It is created only by the reaction that occurs in the oxidation pyruvate-acetyl CoA.
15) Cells with high levels of free ribosomes are most likely to have producing
primarily cytoplasmic proteins in their cytosol.
Ribososmes, which are small structures that help in the synthesis of proteins, play an important role. These proteins are vital for facilitating metabolic reactions and protecting against infections. There are two types: membrane bound and free. Membrane bound ribosomes make proteins that can be exported from the cells to be used, whereas free ribosomes create proteins within the cell.