Reading Assignment 4 Flashcards
The process by which cells commit suicide
Apoptosis or autolysis
Cells usually die by one of two mechanisms= chemical / mechanical damage or
Apoptosis
Mitosis is division of the
Nucleus
The last part of interphase is the______phase
G2
A duplicated chromosome consists of two identical structures called______ _____
Sister chromatid
Which statements characterize the S phase of interphase
- dna replicates during this phase
- it directly follows the g1 phase
In the cell cycle,division of the cytoplasm is called _____
Cytokinesis
Which statements describe the g2 phase of interphase
-enzymes and other structures needed for cell division are synthesized
-it directly follows the S phase of interphase
-centriole production is completed
The replication of the dna molecule during interphase occurs during the_____phase
(S) or Synthesis
Sister chromatids are_____
-replicated dna strands
-joined together by a centromere
-separated by spindle fiber during anaphase
Which is more loosely coiled: chromosomes or chromatin?
Chromatin
The phase of interphase in which dna molecules replicate is called the_____phase
(S) or synthesis
Skin cells are an example of _____cells
Somatic
Four consecutive phases that take place during mitosis are______ , _____ , ______ , and telophase
Prophase , metaphase , anaphase
The three distinct phases of the interphase period of cell division are, in order of their occurrence, ______phase, ______phase, and_____ phase
G1 , S , G2
What are the cells that result when one cell divides
Daughter cells
When a cell is dividing, the dna is tightly coiled as_____
Chromosomes
Cells that include all of the cells in the body except sex cells are called_____ cells
Somatic
The cell division that takes place in somatic cells
Mitosis
True or false: Dna is considered the cells control center because it directs the synthesis of proteins that carry out body functions
True
Daughter cells are
Identical
During translation, the ______ site is where the new amino acid joins the ribosome, the ________site is where the new polypeptide is forming, and the exit site is from where the tRNA exists
aminoacyl (A) ; peptidyl (p)
The synthesis of a new protein from an mRNA transcript
Translation
What is the cell division that takes place in somatic cells called
Mitosis