Biology · Textbook solutions

Cell Cycle and Cell Division

Every solved example, exercise, and miscellaneous question, in the order the textbook teaches them. · 23 questions

Exercises

23 q

Ex 10 Q1 $What is the average cell cycle span for a mammalian cell?$
Ex 10 Q2 $Distinguish cytokinesis from karyokinesis.$
Ex 10 Q3 $Describe the events taking place during interphase.$
Ex 10 Q4 $_o$
Ex 10 Q5 $Why is mitosis called equational division?$
Name the stage of cell cycle at which one of the following events occur:
Ex 10 Q6 (i) $Chromosomes are moved to spindle equator.$
Ex 10 Q6 (ii) $Centromere splits and chromatids separate.$
Ex 10 Q6 (iii) $Pairing between homologous chromosomes takes place.$
Ex 10 Q6 (iv) $Crossing over between homologous chromosomes takes place.$
Describe the following: Draw a diagram to illustrate your answer.
Ex 10 Q7 (a) $synapsis$
Ex 10 Q7 (b) $bivalent$
Ex 10 Q7 (c) $chiasmata$
Ex 10 Q8 $How does cytokinesis in plant cells differ from that in animal cells?$
Ex 10 Q9 $Find examples where the four daughter cells from meiosis are equal in size and where they are found unequal in size.$
Ex 10 Q10 $Distinguish anaphase of mitosis from anaphase I of meiosis.$
Ex 10 Q11 $List the main differences between mitosis and meiosis.$
Ex 10 Q12 $What is the significance of meiosis?$
Discuss with your teacher about
Ex 10 Q13 (i) $haploid insects and lower plants where cell-division occurs, and$
Ex 10 Q13 (ii) $some haploid cells in higher plants where cell-division does not occur.$
Ex 10 Q14 $Can there be mitosis without DNA replication in 'S' phase?$
Ex 10 Q15 $Can there be DNA replication without cell division?$
Analyse the events during every stage of cell cycle and notice how the following two parameters change
Ex 10 Q16 (i) $number of chromosomes (N) per cell$
Ex 10 Q16 (ii) $amount of DNA content (C) per cell$