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Why dont have people with a severe thrombocytopenia any sleeping dissorders?
Hello, Today i´ve learned that thrombocytes transport serotonin from the gut to the cells. I know that serotonin is very important for sleep because it will be metabolised to melatonin. Now when you have a thrombocytopenia you should have less serotonin because you have less thromboytes which can transport them to the cells. How comes that patients which a severe thrombocytopen
how many microns(µ) is 1 ocular unit at 4X? how many microns(µ) is 10 ocular unit at 4X? how many microns(µ) is 20 ocular unit at 4X? how many microns(µ) is 1 ocular unit at 10X? how many microns(µ) is 10 ocular unit at 10X? how many microns(µ) is 20 ocular unit at 10X?
In 1997, researchers discovered a 1 mm microbe (Thiomargarita namibiensis) in oc
Trying to get some information on this to get a better handle on it.
n 1997, researchers discovered a 1 mm microbe (Thiomargarita namibiensis) in ocean sediments. This microbe is visible without a microscope. Discuss where this bacterium was found. What criteria did they use to classify Thiomargarita as a bacterium and not a protist?
how many moles are in aspartane (C14H18N2O5) with mass 294 and density 1.54g/ml
Glucose has molecular mass of 180 and density 1.54g/ml. Aspartame (C14H18N2O5) is an artificial, non-saccharine sweetener with a molecular weight of 294 and a density of 1.35g/ml. develop experimental procedures that can determine: a). How many moles of glucose are in the sugar packet? b). How many moles of aspartame are in the packet? c). What is the relative pH of e
Describe the three mechanisms by which horizontal gene transfer occurs in
bacteria. Explain why these are not examples of reproduction and why these processes are beneficial to bacteria Conjugation Direct cell to cell F plasmid needed Donor is F + Recipient is F- Gram-negative Sex pilus Single strand plasmid Transformation Griffifth Uptake of DNA from surroundings
You also have a P1 transducing phage and a tube of plasmids with a gene for tetracycline resistance.
I need a basic layout on how to go about answering this type of question.
You have available an Hfr lac- ala+ vitB+ tetS strain of E. coli and an F- lac+ ala- vitB- tetS strain.
You also have a P1 transducing phage and a tube of plasmids with a gene for tetracycline resistance. These are the only supplies you can use ( besides media and reagents). Describe how
2. A = T ; C ≡ G ; (A = U, in RNA) 3. two strands of nucleotides similar in shape to a "twisted ladder" 5. a 5-carbon sugar found in DNA (missing one atom of carbon) 6. a length of tightly packed DNA and its associated proteins 7. one strand of nucleotides run in opposite directions of the nucleotides c
Question 1 of 25 4.0 Points The field of child development seeks to: A.a. predict the outcome of development. Correct B.b. uncover the processes that underlie developmental changes. C.c. describe individual differences between children. D.d. identify the stages of childhood.
Suppose that a small backyard pond contains 25 Lemna minor plants, and the expeccted growth rate of ...
Suppose that a small backyard pond contains 25 Lemna minor plants, and the expeccted growth rate of the population is 1.0 x 102 plants per day. Predict how many Lemna minor plants the pond will contain after 31 days. 2 marks
If all organisms originated in their present forms during a single event, Darwin wondered, why was t
If all organisms originated in their present forms during a single event, Darwin wondered, why was there a distinctive clustering of similar organisms in different regions of the world? Why were all types of organisms not randomly distributed?
Why would living and fossilized organisms that looked similar be found within the same region?
The Case Study A 37-year-old woman is brought to the emergency room where you are working triage. She has an extremely swollen right lower leg. You see what appears to be an old surgical wound on her mid-calf, with rough scar tissue surrounded by purplish-red skin. She is in an enormous amount of pain. Her husband indicates she had a group of moles removed from the area a littl
Question: Jane and John are considering having another child. Given the pedigree you constructed and the mode of inheritance for galactosemia, what is the risk that their next child will have the disorder?
Early Vascular Plants/Ferns, Angiosperms, Gymnosperms, and Bryophytes.
What is the order from oldest to youngest of this following group: Early Vascular Plants/Ferns, Angiosperms, Gymnosperms, and Bryophytes. Also what is each of their period and age they first appeared on Earth.
Distinguish between the rate of speciation in a higher taxon and its rate of diversification. What are the possible relationships between the present number of species in a taxon, its rate of speciation, and its rate of diversification?
What factors might account for differences among taxa in their numbers of extant species? Suggest methods for determining which factor mi
Write a short scenario (ex. a disruption in the environment) of how level is interconnected. What are the possible impacts of your example on the different biological levels? Define each biological level. Try to connect at least 3 levels. Organisms -----> Populations -----> commnities ------> ecosystems --------> biome
Find two different articles from the internet that criticize evolution
Find two different articles from the internet that criticize evolution by natural selection. Provide with the links and write at least a paragraph for each article that discusses the scientific merit of the position the author is taking. Explain why or why not author has used sound scientific reasoning. If so how? If not, how has he/she not? How would a biologist answer the claims t
Part E Using BLAST: Can You Identify a Pathogen from a Nucleotide Sequence?
Using BLAST: Can You Identify a Pathogen from a Nucleotide Sequence? With rapid advances in sequencing technology, the availability of sequences of specific genes and of entire genomes is exploding. These sequences are stored in a number of searchable databases. Comparison of new sequences with sequences of known or assumed function is one of the most widely used bioinformatics
1. (5 points) Briefly explain the idea of differential centrifugation . What is the point of the multiple rounds of centrifugation?
The idea of differential centrifugation is isolate different components of the cell. For example, the nuclei, the cell wall, mitochondria, or other organelles in the cell. The use of increasing force and time will sediment organelles ba
5.Using the terms provided, complete the statements below. Some terms may apply
5. Using the terms provided, complete the statements below. Some terms may apply more than once, while others may not apply at all. (15 points)
neutrophils B cells cytokines heavy chains histone Toll-like receptors chromatin AIDS light chains gene rearrangements dendritic cells phagocytosis macrophages mast cells antibodies T cells helper T cells HIV h
15 - The chromosomal basis of inheritance 16 - The Molecular Basis of Inheritance 17 - From Gene to Protein 18 - Microbial Models: The Genetics of Viruses and Bacteria 19 - The Organization and Control of Eukaryotic Genomes 20 - DNA Technology
Some regions of the plasma membrane, called lipid rafts, have a higher concentra
have higher rates of lateral diffusion of lipids and proteins into and out of the lipid rafts. are able to flip from inside to outside. detach from the plasma membrane and clog arteries. *** are more rigid than the surrounding membrane.*** (Answer) are more fluid than the surrounding membrane.
The chemical structure of DNA and its nucleotides (Mastering Bio Ch. 15/16 Q7A)
The chemical structure of DNA and its nucleotides The DNA double helix is composed of two strands of DNA; each strand is a polymer of DNA nucleotides. Each nucleotide consists of a sugar, a phosphate group, and one of four nitrogenous bases. The structure and orientation of the two strands are important to understanding DNA replication. Drag the labels to their appropriate
Show how populations of multiple phenotypes originate
Construct a SRF model to explain the divergence of liverworts from other plant species. Your model should show: 1. Show how populations of multiple phenotypes originate 2. Show how reproductive barriers reduce gene flow between populations 3. Show when stomata originated in ancient plants.
Possible structures (more are likely): liverwort ancestor, liverwort
Antheridia and archegonia have been lost in some groups of plants. Which groups are missing which structures? What possible vestigial remnant of these structures exist in the groups missing one or both of these structures?
Until the evolution of the seed plants, land plants were dependent on the availability of water for reproduction. Explain why this was true. Explain how seed plants overcame the need for water in reproduction.
Create a flow chart of the peripheral nervous system in order to organize this section. Be sure to include all subdivisions, a brief definition (of each), and at least 3 effects (each) of the sympathetic/parasympathetic divisions.
