Exam 17: Cell Reproduction and Differentiation

Match each stage of the mitotic phase to its description. -cytoplasm divides

In order to increase the speed of replication, the DNA molecule is opened at several locations creating multiple replication bubbles where complementary strands are formed.

Once an RNA molecule has been made from DNA, it enters the cytoplasm of the cell where it is used by the cell to produce a

Determine whether each of the following events is characteristic of mitosis, meiosis, or both. Answers may be used more than once. -results in the production of gametes A) mitosis B) mitosis and meiosis C) meiosis

Mitochondria have their own DNA, which encodes some of the proteins that function within the mitochondria. Explain why the inheritance of mitochondrial DNA is described as "maternal inheritance."

Determine whether each of the following events is characteristic of mitosis, meiosis, or both. Answers may be used more than once. -involves chromosome movement and distribution to daughter cells A) mitosis B) mitosis and meiosis C) meiosis

Determine whether each of the following events is characteristic of mitosis, meiosis, or both. Answers may be used more than once. -involves pairing of homologous chromosomes and crossing-over A) mitosis B) mitosis and meiosis C) meiosis

Which one of the following statements is TRUE regarding the mitotic phase of the cell cycle?

Initiation of translation begins with a tRNA binding its anticodon to the start codon of mRNA at a ribosome.

A codon is

The specialization of stem cells into various cellular types is called ________.

Which one of the following statements best describes the chromosomes in the cells at the end of meiosis I?

Match the following types of RNA to their description. Answers may be used more than once. -contains a start codon sequence to mark the beginning protein synthesis

Progression through the various phases of the cell cycle depends on fluctuating concentrations of specific proteins called ________.

Explain the importance of checkpoints to the cell cycle.

Match the following types of RNA to their description. Answers may be used more than once. -the resulting transcript produced after transcription and post-transcriptional modification is completed

Meiosis results in four nonidentical daughter cells.

Embryo splitting as a means of reproductive cloning is typically done at the 32- or 64-cell stage.

Mitosis in mammals usually takes less than an hour.

The primary transcript that results from transcription must be modified in eukaryotes before it can be translated into a functional protein. The nucleotide sequence pieces that ultimately form the resulting mRNA and contain the genetic information are called ________.