Molecular Biology Questions
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What unit of length would you generally use to measure a typical plant or animal cell?
Which statement is NOT true about the events/conclusions from studies during the mid-1800s surrounding the discovery of cells?a) cells came to be known as the smallest universal building block of living organismsb) scientists came to the conclusion that new cells can form spontaneously from the remnants of ruptured cellsc) Light microscopy was essential in demonstrating the commonalities between plant and animal tissues. d) New cells arise from the growth and division of previously existing cells.
A force is exerted by a hydrogen-bonded network of water molecules that brings two nonpolar surfaces together by excluding water between them. What force is responsible for this?
Carbon, Hydrogen, and Oxygen account for 95% of the elements in living organisms. These atoms make up the general formula for carbohydrates. Does this mean that living things are mostly made of sugar?
What happens to the first two ribonucleotides during transcription initiation?
A noncovalent bond in which an electropositive hydrogen atom is partially shared by two electronegative atoms is called an/a _________?
What happens to the shape of RNA polymerase during the transition from initiation to elongation?
Where does melting initiate during transcription initiation?
What assists in elongation and termination during transcription?
Changes in DNA sequence from one generation to the next may result in offspring that are altered in fitness compared with their parents. The process of change and selection over the course of many generations is the basis of ______?
How much DNA does RNA polymerase cover during transcription elongation?
What occurs between -11 and +2 during the open complex formation?
All of the different proteins in a cell are made from the same _______? By linking them in different sequences, the cell can make protein molecules with different conformations and surface chemistries, and therefore different functions.
What stabilizes the complex and incorporation of the first two nucleotides?
Where does the dsDNA helix reform during transcription initiation?
Which nucleotides flip out to stabilize ssDNA during transcription initiation?
What helps the polymerase break away from the promoter during transcription initiation?
Living systems are incredibly diverse in size, shape, environment, and behavior. It is estimated that there are between 10 million and 100 million different species. Despite this wide variety of organisms, it remains difficult to define what it means to say something is alive. Which of the following can be described as the smallest living unit?(a) DNA(b) cell(c) organelle(d) protein
What recognizes the -10 element in transcription initiation?
What binds to the UP-element found in strong promoters?