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Chapter 6: Q1. (page 118)
Describe how cilia and flagella bend.
The flagella and cilia are the structures associated with locomotion. The bending of cilia and flagella takes place with the help of dynein.
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The shape of a yeast cell can be approximated by a sphere.
(a). Calculate the volume of each cell using the formula of the volume of a sphere:
\(V = \frac{4}{3}\pi {r^3}\)
Note that \(\pi \) (the Greek letter pi) is a constant with an approximate value of 3.14, d stands for diameter, and r stands for radius, which is half the diameter. (b) What volume of new cytoplasm will be new cell have to synthesize as its matures? To determine this, calculate the difference between the volume of the full sized cell and the volume of the new cell.
Colpidium colpodais a unicellular eukaryote that lives in freshwater, eats bacteria, and moves by cilia(see Figure 6.23b). Describe how the parts of this cell work together in the functioning of C. colpoda, including as many organelles and other cell structures as you can.
Which of the following is present in a prokaryotic cell?
(A) mitochondrion
(B) ribosome
(C) nuclear envelope
(D) chloroplast
Describe the molecular composition of nucleoli and explain their function.
The cells in this SEM are epithelial cells from the small intestine. Discuss how aspects of their structure contribute to their specialized functions of nutrient absorption and a barrier between the intestinal contents and the blood supply on the other side of the sheet of epithelial cells.
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