Measurements of the amount of DNA per nucleus were taken on a large number of cells from a growing fungus. The measured DNA levels ranged from 3 to 6 picograms per nucleus. At the beginning of which stage of the cell cycle did the nucleus contain 6 picograms of DNA?

Trace elements are those required by an organism in only minute quantities. Which of the following is NOT a trace element that is required by humans and other vertebrates?

  REFER TO GRAPH: What would happen in this lab after a reaction rate of 14.75 has been reached?

Transcription consists of which of the following?

The following question refers to the essential steps in meiosis described below. 1. Formation of four new nuclei, each with half the chromosomes present in the parent nucleus.2. Alignment of tetrads at the metaphase plate.3. Separation of sister chromatids.3. Separation of the homologues; no uncoupling of the centromeres.5. Synapsis; chromosomes moving to the middle of the cell in pairs. From the descriptions above, which of the following is the order that most logically illustrates a sequence of meiosis?

Which of the following descriptions BEST fits the class of molecules known as nucleotides?

Three babies were recently mixed up in a hospital.  After consideration of the data below, which of the following represents the correct parent / baby combination?

What is the mechanism for the production of recombinant chromosomes?

A polysaccharide that is used for storing energy in human muscle and liver cells is:

While using a very special microscope in the laboratory, you observe a molecule with a hydrophilic head and hydrophobic tails. Based on what you have learned in your biology class, you are confident that this molecule is a