Catalysts — Cumulative exam Answers

During transcription, what happens to the RNA polymerase if a repressor protein attaches to the operator?

Which statement correctly describes the electrons in a water molecule?

Which conversion is the result of aerobic cellular respiration?

A zygote consists of how many cells?

Which type of molecule stores the main source of energy used by animals?

During which process is mRNA synthesized from a DNA template with the aid of RNA polymerase?

Many scientists are concerned that the Ogallala aquifer in the United States is being depleted at an alarming rate. What would most likely be a major effect of this aquifer running dry?

Which of the following could be a nucleotide of DNA?

The diagram below shows the energy conversions of the Krebs cycle, which is part of cellular respiration. The U-shaped arrows that show changes for NAD+, FAD, and ADP molecules represent energy conversions. From each glucose molecule, two acetyl-CoA molecules are made for the Krebs cycle.How many energy conversions occur when both acetyl-CoA molecules go through the Krebs cycle?

Which statement correctly distinguishes photosynthesis and respiration?

Katie wants to make ball-and-stick models of the four macromolecules. She has colored balls for each of the elements in these molecules, including the following. red: hydrogen black: carbon purple: oxygen green: nitrogenIn which macromolecule will she use the black, red, and purple balls in a ratio of 1:2:1?

Which best describes the relationship between DNA, genes, and chromosomes?

Look at the picture below.What macromolecules make up most of the structure that is shown?

Which statement best describes how Watson and Crick's model used other scientists' work to create a model of DNA?