Essential Cell Biology: Chapter Questions and Answers 2023

Central Dogma - -Genetic information flows from DNA to RNA to protein. -What base is not present in RNA? - -T -In RNA what base pairs with a base A? - -U -An RNA molecule can fold into complex 3D shapes because - -it is single stranded. -All of the RNA in a cell is made by what process? ...

Protein - -Polymer built from amino acids that provide cells with their shape and structure and performs most of their activities. -Peptide Bonds - -Chemical bond between the carbonyl group of one amino acid and the amino group of a second amino acid. -Polypeptides/Polypeptide Chains - -Linear...

Membrane-Enclosed Organelles - -one of several compartments with a specialized function, suspended in the cytoplasm and found in eukaryotic cells -Endomembrane System - -A network of membranes inside and around a eukaryotic cell, related either through direct physical contact or by the transfer o...

DNA - -Double stranded polynucleotide formed from two separate chains of covalently linked deoxyribonucleic units. It serves as the cell's store of genetic information that is transmitted from generation to generation. -Double Helix - -The typical structure of a DNA molecule in which the two com...

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...

signal transduction - -conversion of an impulse or stimulus from one physical or chemical form to another -cell signaling - -the molecular mechanisms by which cells detect and respond to external stimuli and send messages to other cells -hormone - -extracellular signal molecule that is secrete...

Cells - -The basic unit from which a living organism is made; consists of an aqueous solution of organic molecules enclosed by a membrane. -Cell Biology - -The study of cells and their structure, function and behavior. -Cilium (cilia) - -Hairlike structure made of microtubules found on the sur...

What does the plasma membrane do? - -Acts as a control barrier to allow molecules in and out of the cell Blocks almost all water soluble molecules -How are molecules transferred into cells? - -Specialized membrane protiens in the lipid bi-layer each transports only one specific type of molecule...

What would be the most obvious outcome of repeated cell cycles consisting of S phase and M phase only? (a) Cells would not be able to replicate their DNA. (b) The mitotic spindle could not assemble. (c) Cells would get larger and larger. (d) The cells produced would get smaller and smaller. - -d...