Eukaryotic Cell vs. Prokaryotic Cell: There are two types of cells found, that originate from a common ancestor - The prokaryotes and eukaryotes. While Prokaryotes are organisms without a cell nucleus and other membrane-bound organelles and are most Continue Reading...
Prokaryotic & Eukaryotic Cells Cells can be divided into two categories: prokaryotic and eukaryotic cells. Prokaryotic cells are significantly smaller than eukaryotic cells. This size difference is due to the many contents inside a eukaryotic ce Continue Reading...
evolution of eukaryotic cells linked to the increase of atmospheric oxygen concentration during the Precambrian? Increase of atmospheric oxygen during the Precambrian period led to creatures which were more dependent on oxygen in the atmosphere. Ox Continue Reading...
Enzymes 1. How does temperature affect enzyme function? Every enzyme demonstrates maximum activity at a particular temperature known as its optimum temperature. Generally, all enzymes are inactivated at temperatures below 10°C and get denatur Continue Reading...
They are composed of a double membrane, one side of which separates it from the cytosol, and the other side of which contains the material that it is transporting. Their membranes can be joined with the plasma membrane to deliver material into and o Continue Reading...
ELL Cycle Control Cell Cycle Control The cell cycle involves a series of events that occur within a cell that results to the division of the cell and its duplication which leads to the production of two daughter cells. For prokaryotic cells-those t Continue Reading...
Cell Metabolism Define metabolism, anabolism, and catabolism in full details The cell is a complex organisms in which many chemical reaction take place so as to maintain normal cellular function. Cell metabolism can be defined as the process throug Continue Reading...
a&P Lab Design Project -- A&P Lab Ammonia (NH3) is produced by cells located throughout the body; most of the production occurring in the intestines, liver, and the kidney, where it is used to produce urea. Ammonia is particularly toxic to Continue Reading...
When DNA is damaged, cells can react through cell cycle checkpoints which allows repair to begin before further division can occur. There is also the prokaryotic SOS response which changes gene expression in bacteria as a result of DNA damage. This Continue Reading...
CELL & ITS COMPONENTS Biology Biologists, researchers, and professionals of many disciplines study the nature of the cell. The drive to understand the nature of the cell aligns with urges to understand the nature of the atom, the molecule, DNA Continue Reading...
Cell Division All living things are complex organisms that are made up of cells. Some are made up of a single cell while others comprise of numerous cells working together. Cells are the basic functional and structural units of living organisms and Continue Reading...
Structural Elements of a Functional Eukaryotic Chromosome The three essential structural elements of a functional eukaryotic chromosome are centromere, telomeres, and origins of replication. Centromere serves as the attachment point for the spindle f Continue Reading...
In one laboratory experiment, bacteria exposed to high levels of pathogenic bacteria over several hundred generations eventually adapted "their progeny became dependent on having the formerly pathogenic bacteria in food vacuoles...(Jeon, 1991)" (Arm Continue Reading...
Eukaryotic Cell Try to identify the following structures in an amoeba (Fig. 4.2): Nucleus: A single, membrane-bounded oval structure. Food vacuoles: Membrane-bounded spheres that contain engulfed food. Are these present? Yes. Contractile vacuole Continue Reading...
living things are characterized by the following seven characteristics namely mobility, respiration, excretion, sensitivity or response to external stimulus, growth, feeding, and reproduction. Though there may be variations between animal and plant Continue Reading...
123). In this study, Martinez-Contreras and her associates report the results of recent research that has provided additional evidence concerning the function of these proteins in precursor-messenger RNA (pre-mRNA) splicing (2007). The splicing rep Continue Reading...
properties of a Carbon atom that make it ideally suited to produce varied carbon skeletons? Besides water, carbon molecules are the most significant contributors to life. The structural and functional diversity of organic molecules emerges from the Continue Reading...
Transcription is a process that genetic information on the DNA copies into RNA and the DNA acts as the template for the new molecules of RNA. Transcription process begins with the DNA double helix unwinding as the hydrogen bonds holding the opposing Continue Reading...
PCR GAPDH Genes Parsley PCR Analysis of GAPDH Genes in Parsley The purpose of this review is to consider the structure and the function of the protein glyceraldehyde-3-phosphate dehydrogenase (GAPDH, EC 1.2.1.12) in Petroselinum crispum and Coriand Continue Reading...
physical properties diffusion structure function epithelia epithelial cells digestive circulatory systems animals larger end larger. In answer, surface area volume ratios (SA/V) ratios change organisms larger effect (s) change imposes structure func Continue Reading...
Origin of Eukaryotes Theory of Endosymbiosis The evolution of eukaryotes has no fossil record. However, from the study of modern organisms, biologists deduced their theory that eukaryotes evolved from prokaryotes through the endosymbiosis process. Continue Reading...
" (Sukumaran, 2004) Mutation is what results in the difference and may be utilized as a measure of the time that has elapsed since separation of the species from the common ancestor during evolution. This is a method of "inferring the divergence of t Continue Reading...
Cellular Respiration Give the overall general reaction for cellular respiration. State what eukaryotic cell organelle is involved. Cellular respiration is the process by which cells convert biochemical energy from nutrients into adenosine triphosph Continue Reading...
Desiccation Tolerance in Prokaryotes Prokaryotes or eukaryote is the organism that makes up the microbial world. Prokaryotes are deficient of internal unit membranes and are self-sufficient cells or organisms. The best-known prokaryotic organisms ar Continue Reading...
Nanomachines The Science of molecular size machines and its engineering designs and constructions until late 1980s were not considered practicable. Nanotechnology, according to the leading exponents of that time were neither feasible nor viable, due Continue Reading...
Disease Control. You have been called to a remote area of Uganda to study a mysterious disease that is causing respiratory ailments in a small village. You isolate a bacterium from several patients that seems like a good candidate for the pathogen. Continue Reading...
Biology Genes are regions of nucleic acid that is passed from parents to offspring during reproduction as chromosomes in nuclei of gametes, encoding information that is essential for the construction and regulation of proteins and other molecules th Continue Reading...
Anatomy Major cavities of the body and their organs: Our body is made up of solid structures and many cavities. The organs are packed in these cavities and they fill these cavities. The major cavities in our body are: the ventral cavity, which is s Continue Reading...
Genetics Original Gene Sequence: 3'-T AC CC T. TT AGTAGCCAC T-5 Transcription of Original: 3'-A UG GG A AA UCAUCGGUG A-5' Translation of Original: Start codon Met, Gly, Asn, His, Arg, Stop Mutated Gene Sequence 1: 3'-T ACGCT TT AGTAGCCAT T-5' Tr Continue Reading...
Genetics Student Response Original DNA Strand: 3'-T ACCCTTTAGCCACT-5' Transcription (base sequence of RNA): 3'-A UGGGAAAUCGGUGA-5' Translation (amino acid sequence): Met -- Gly -- Asn -- His -- Arg -- STOP Mutated gene sequence one: 3'-T ACG Continue Reading...
There are many different types of website that talk about biology; some of them include university websites which allows access to differing portals of biological information. Such websites as University of Michigan's "biology resource network" is a Continue Reading...
Most fungi can also reproduce through sexual reproduction both with the same organism mixing gametes and with reproduction between two separate organisms. The cells of many fungi are primarily copies of each other, without differentiation of organs Continue Reading...
During the gene decoding process the double stranded DNA splits up to reveal a single strand from which the base sequence of the gene is copied onto a single stranded nucleic acid known as the messenger ribonucleic acid or mRNA. This implies that we Continue Reading...
Histones Face the Facts According to the article entitled, "Histones Face the Facts," the "beads on a string" nature of eukaryotic chromatin poses a difficult quandary for scientists, in the case of RNA polymerase II complex, or RNAP II. How can th Continue Reading...
Based on the results of these assays, S. flexneri can often be identified, although additional kits may be required. The simplest way, however, may be the novel approach through multiplex PCR (mRPC). It is possible to identify Shigella species throu Continue Reading...
These proteins include homologous members of yeast. The presences of these proteins suggest that E. histolytica is skilled to perform homologous recombination, which is the same as in other organisms. DNA damage was evaluated by TUNEL assay. In yeas Continue Reading...
Amidation of Peptides in Humans Modern biotechnology has experienced dramatic leaps in the body of knowledge concerning molecular processes in peptides and how they work. Many of these processes rely on amidation of peptides to achieve increasingly Continue Reading...
Desiccation Tolerance in Prokaryotes Water is very important for life. Indeed, the processes of life, both external and internal even, at the cellular and the molecular level, are governed by water. Without water, most living organisms suffer from w Continue Reading...
Transposable Elements and Horizontal Gene Transfer Jumping Genes Hybrid dysgenesis in fruit flies of the genus Drosophila results when males carrying transposable elements (TEs) mate with non-carrier females (reviewed by Blauth et al., 2009). This Continue Reading...
