Question 5. DNA replication and the production of histones occur during what part of the cell additional cycle?

Question 50 50. Which of the following represents the inactive 7-chromatin in female cells? O euchromatin O heterochromatin O genomic equivalence O genomic imprinting O dosage compensation Previous

The Cell Cycle Prior to division, the eukaryotic cell must undergo an extended period of preparation, called the interphase. The interphase represents the interval between two consecutive cell divisions. During interphase, the cell synthesizes all the materials that are needed for division to occur, including all the DNA molecules and associated proteins that make up all the chromosomes in the cell. The chromosomes are so named since they are readily stained to become "colored bodies", as shown in Figure 9.1. One or more darkly staining structures inside the nucleus, called the nucleoli, are readily visible in interphase, erti sevilseido primes 1. What is the function of the nucleoli? producer ubemoer Iaibsences make protein are isiq ni to 2 to noistub During M phase, the cell undergoes mitosis to divide its nucleus in two, and toward the end of mitosis, it undergoes cytokinesis, to divide its cytoplasm in two. PRO povite queabler alle seqytowe M phase is composed of krychencser and…

Most general functions of a cell occur during G1 of interphase. What events that occur during other phases of the cell cycle might inhibit general metabolism?

QUESTION 31 You are a new PhD student in the lab of Dr. Adenine and start noticing that many of the cells you are studying for your project have two centrosomes. You realize that a defect during one specific phase of the cell cycle could explain this double-centrosome phenotype. A defect during which phase is most likely to be the culprit? G1 phase. Metaphase. G2 phase. O Interphase.

QUESTION 17 Which of the following events describe the mechanism of a cell cycle checkpoint? (choose more than one if applicable) If you really want to challenge yourself, figure out which cell cycle checkpoint is described by each of your choices. Questions about this topic are commonly missed on the unit 3 exam! U A Cdk is phosphorylated, turning it off. This prevents the cell from entering the next phase before it is ready. A ubiquitin ligase is activated to target a Cdk for destruction. Since the Cdk is destroyed, it cannot be active and therefore cannot cause entry into the next phase of the cell cycle. A Cdk inhibitor protein is transcribed and translated when it otherwise wouldn't be, which turns off a Cdk and prevents the cell from entering the next phase before it's ready. A ubiquitin ligase is inhibited, preventing the proteolysis of proteins that must be destroyed in order for the cell to advance to the next step in the cell cycle. One of these proteins that is not destroyed…

1. How did your results differ from the class data for each phase of mitosis? 2. Write a brief paragraph stating whether or not your hypothesis was supported by the class data that you collected and an explanation of why/why not.

QUESTION 9 Why is a variegated plant considered heteroplasmic? O The plant has mutant and wild-type chloroplast DNAS distributed amongst the cells in different ratios. O The plant has only two types of cells, one with only mutant chloroplast DNAS and one with only wild-type chloroplast DNAS. O All of the plant's cells have mutant and wild-type chloroplast DNAS. O All of the plant's cells have mitochondria and chloroplasts.

Approximately what percentage of the cell cycle time does a cell spend in interphase?   Question options:   70%   80%   60%   90%

QUESTION 2 DNA replication occurs in which phase of the cell cycle? O a. S phase O b. M phase O c. G1 phase O d. G2 phase