Question

6 polysomes are aggregations of ribosomes that are actively engaged in protein synthesis. true
7 the cytoskeleton of plant cells consists of microtubules and actin filaments true
8 flagella and cilia are attached to basal bodies. true
9 in cells that enlarge in all directions more or less uniformly, microfibrills have been deposited perpendicular to the axis of elongation.
10 plasmodesmata are formed during cell division as strands of plasma membrane are trapped in the cell plate.
11 eukaryotes typically contain much more dna than prokaryotes.
12 in eukaryotes mitosis is usually followed by binary fission.
13 in terms of cellular activity, intephase is best described as period of dormancy.
14 the phragmosome is a sheet of cytoplasm that anchors the nucleus in the center of the cell prior to nuclear division.
15 binding of the chromosomes to the mitotic spindle requires special dna sequences called centromeres.

Explanation:

1. Microfibrils are deposited perpendicular to the axis of elongation in uniformly - enlarging cells. True.
2. Plasmodesmata are formed as plasma membrane strands are trapped in the cell plate during cell division. True.
3. Eukaryotes generally have more DNA than prokaryotes due to more complex genetic regulation and larger genomes. True.
4. In eukaryotes, mitosis is usually followed by cytokinesis, not binary fission (which is in prokaryotes). False.
5. Interphase is a period of high cellular activity including DNA replication and organelle synthesis, not dormancy. False.
6. The phragmosome anchors the nucleus in the center of the cell prior to nuclear division. True.
7. Centromeres are special DNA sequences for chromosome - mitotic spindle binding. True.

Answer:

1. True
2. True
3. True
4. False
5. False
6. True
7. True