Q: Research and report on a form of natural selection called sexual selection.
A: Sexual selection is a biological selection process where members of one biological sex choose…
Q: Four babies are born in a hospital and are mixed up. Based on the blood type and hairline, match the…
A: A blood type is a classification of blood that is based on the presence and absence of the…
Q: Based on height calculations of Homo erectus fossils, biological anthropologists estimate that their…
A: Homo erectus, an extinct form of human, is a pioneer species. It was the first of our ancestors to…
Q: In the case of cancer, uncontrolled cell division is a problem because it Top of Form lowers…
A: Option 4. Cancerous tumours are brought on by aberrant cells that keep on proliferating. Unchecked…
Q: Whether the statement "Stem cells, being stem cells, are by definition the same in all tissues" is…
A: Undifferentiated cells called stem cells can develop into any form of cell in the body. Adult stem…
Q: left untreated, an iron deficiency would eventually lead to decreased performance by each of the…
A: The answers to the above mentioned questions are given below.
Q: an antidepressant works by inhibiting the actions of histone deacetylase activity, what is the most…
A: Histone deacetylases are responsible for the deacetylation of histone proteins. Histone proteins are…
Q: List the four types of cells in the epidermis and their function: 1. 2. 3. 4. Which of these cells…
A: Skin is the organ that covers the body's external surface and thereby is the largest organ in the…
Q: Examine whether the statement "Each strand in a ẞ sheet is a helix with two amino acids per turn" is…
A: A polypeptide, or chain of amino acids, makes up proteins. The DNA of organisms codes for 20…
Q: Which is the largest digestive gland present in human body? What are the names and function of its…
A: *The largest digestive gland present in human body is liver.…
Q: Why do bacteria cause diarrhea
A: Diarrhea is a diseased condition in which the stools become very loose or watery, making them…
Q: I need help with question 3, the last image is created I just need it labeled with the derived…
A: Phylogenetic trees: The phylogenetic trees show the evolutionary relationship between organisms…
Q: VO2 calculation scenario: Body mass= 102 kg, HR= 180 beats/min, SV= 110 ml blood/beat, venous…
A: The maximum quantity of oxygen you can use during exercise is referred to as your VO2 max. It is…
Q: TION 4 Date ranges (mya) Sagittal crest? (red circle) (Yes or No) Brain size (cc) Cranial base…
A: Australopithecus is more gracile, whereas Paranthropus is more robust. Furthermore, while…
Q: 13. List 6 things (from your PowerPoint) that result in an increase in heart rate.
A: Introduction The number of contractions (beats) of the heart per minute is used to calculate heart…
Q: List 6 things (from your PowerPoint) that result in an increase in heart rate.
A: The six things that can increase heart rate in a human being can be, 1) Stress : two much stress may…
Q: Promoter 5' UTR Coding region Transcription start site…
A: Mutation can be defined as the genetic change in the genetic material of the organism,it results in…
Q: xamine whether the statement, "Pathogens must enter host cells to cause disease", is true or false.
A: A class of bacteria known as pathogens is capable of causing disease. Bacteria, viruses, fungi,…
Q: Whether the statement "every tissue that can be renewed from a tissue-specific population of stem…
A: Undifferentiated cells called stem cells have the propensity to specialize into several cell types.…
Q: Endocrine hormones regulate the activities of tissue far from the tissue that secretes them - TRUE…
A: We know that The branch of science that deals with the study of endocrine glands and their…
Q: Here is one set of primers used to amplify a segment of this gene. Select the option that…
A: The polymerase chain reaction (PCR) is the in-vitro amplification of DNA using a…
Q: Explain the general steps in the pathway (use figure 8.53). Make sure to include an explanation of…
A: TNF is a member of the soluble cytokine family. By generating soluble receptors that engage…
Q: If a nondisjunction event occurred in Anna during meiosis I, which lane (A, B, C, D) best fits the…
A: Down syndrome is a congenital disorder that affects the child physically and mentally from his/her…
Q: Regarding the origin of the eukaryotic cell Group of answer choices it likely involved fusion of an…
A: The eukaryotic cells contain membrane bound cell organelles including proper nucleus, mitochondria,…
Q: If you encountered an unknown fungus, and found that it only had dikaryon cells inside resistant…
A: Dikaryon is a term given to a stage of a cell when two haploid nuclei which are not fused are…
Q: Pharmaceutical and healthcare companies are interested in developing substances that affect the…
A: First, we have to under stand the mechanism of cellular respiration and metabolism. Cellular…
Q: Please answer the next question
A: Germ band It occurs in Drosophila and refers to the segmented trunk of the embryo. This band extends…
Q: A farmer who wants to create a thick stock-proof hedge will cut the hedge plant regularly. Explain…
A: Plant hormones make an important role in their development. And this take care of everything for…
Q: Explain whether the microbiota transplantation is so effective.
A: The microbial species that live in the human gut have positive effects on health. These microbial…
Q: pH using universal indicator A1. After letting the urine stand for 1 hour, what changes…
A: Urine formed by the nephrons of Kidneys. It is formed by three processes, these are glomerular…
Q: For each DNA sequence below, there is a single nucleotide mutation in the DNA sequence. For all…
A: According to the question, the sequence 5 has the mutation highlighted in orange. Also given a…
Q: A chicken breeder has chickens that are white, black, or speckled. Speckled chickens have both black…
A: A. BW×BW Option a is correct
Q: umbilical cord strangulation.
A: The umbilical cord is a flexible, tube-like structure that, during pregnancy, connects the fetus to…
Q: The surface proteins on the lipid envelope of the hepatitis B virus specifically bind to receptor…
A: Introduction :- The virus known as HIV (human immunodeficiency virus) targets the immune system of…
Q: Is there an analogous structure in horsetails? If so, what is it?
A: Analogous structures are features of different species that are similar in function but not…
Q: Looking at the anatomy of a tree trunk, the part that greatly contribute to the welfare of humans…
A:
Q: L. MONOCYTOGENES (LISTERIOSIS) Microscopy -If gram positive or gram negative - Morphology…
A: Listeria monocytogenes is a pathogenic bacterium that causes listeriosis infection. Since it is a…
Q: Do the state emissions rules impose on the efforts of the federal government to address global…
A: There is a lot of evidence that suggests that the Earth is getting warmer and that humans are at…
Q: H G Labeling Pre-Lab: Vessels of Left Heart D с B A (right) A (right) E Att Anterior View F A (left)…
A: The heart is a muscle, and it, like any other tissue, organ, or muscle, needs a blood supply to…
Q: explain the way in which complement reaction remains localized when active products leave the…
A: The immune system's effective phagocytosis and the functioning of antibodies are both enhanced by…
Q: What is the most likely mode of inheritance for the trait shown in the following pedigree? Select…
A: Inheritance pattern is type of pattern which determines how traits are passed from parental…
Q: In humans, wavy hair (CS) results by the incomplete dominant situation of curly hair (C) and…
A: Genotype can be defined as the genetic code of individual. These genetic codes have all the…
Q: Explain three general mechanisms for horizontal gene transfer.
A: Introduction:- Gene transfer is defined as the transfer or movement of genetic material in the form…
Q: Background introduction about blood smear
A: Introduction Hematology is a specific branch of medicine which involves study of blood and…
Q: Chlamydia is a bacterium with a capsule that hides its PAMPs. Therefore, Chlamydiacan Question 7…
A: Toll-like receptors (TLRs) of the host immune system recognise the tiny, conserved molecules of…
Q: 11. Water used to prepare solutions for intravenous use must not only be sterile, but also be free…
A: All types of microorganisms, including bacteria, fungi, spores, unicellular eukaryotic creatures…
Q: Suggest why it is easier to determine the HIV numbers of expecting women than for men.
A: Plasmacytoid dendritic cells (pDCs), one of the first immune system cells to respond to HIV-1 and…
Q: What is the purpose of adding a primer to a PCR reaction? Is this primer made up of DNA or RNA…
A: The polymerase chain reaction is a method that is widely used to rapidly make millions of copies of…
Q: How does exercise affect the heart?
A: The heart is an essential part of our body that helps to pump blood and oxygen into the body. There…
Q: PERCEPTION AND ITS IMPACT ABOUT CONTRACEPTIVES AMONG senior high school students essay
A: High schools are intended to provide an educational support structure for pupils. The period spent…
Step by step
Solved in 2 steps
- A PhD student leaving for vacation has asked an undergraduate student to perform daily media changes forhis iPSCs while he is gone. The culture is happening in 12-well plates where a volume of 2 mL is optimal. OnSaturday, when changing the media, the undergraduate decides to add 4 ml of media to the dishes (insteadof 2 ml) because he wants to skip lab and watch the Super Bowl on Sunday. He decides to add twice thevolume of media (4 mL) to tide the cells over till Monday. However, when the graduate student returns onMonday, he finds that some of his cells have died. Your job is to determine whether the cells died due to alack of oxygen. For the calculations that follow, diffusion and reaction occurs only in one direction. Also,assume that reaction only occurs at the cell-media interface. Use Michaelis-Menten type kinetics for oxygenuptake. You may use the following information:Ps = 150 mmHg (ambient oxygen tension)K = 1.19 nmol / mL / mmHg (solubility of oxygen in medium)D = 2…A PhD student leaving for vacation has asked an undergraduate student to perform daily media changes forhis iPSCs while he is gone. The culture is happening in 12-well plates where a volume of 2 mL is optimal. OnSaturday, when changing the media, the undergraduate decides to add 4 ml of media to the dishes (insteadof 2 ml) because he wants to skip lab and watch the Super Bowl on Sunday. He decides to add twice thevolume of media (4 mL) to tide the cells over till Monday. However, when the graduate student returns onMonday, he finds that some of his cells have died. Your job is to determine whether the cells died due to alack of oxygen. For the calculations that follow, diffusion and reaction occurs only in one direction. Also,assume that reaction only occurs at the cell-media interface. Use Michaelis-Menten type kinetics for oxygenuptake. You may use the following information:Ps = 150 mmHg (ambient oxygen tension)K = 1.19 nmol / mL / mmHg (solubility of oxygen in medium)D = 2…For each item on the following list, propose a reasonable method ofsterilization. You cannot use the same method more than three timesfor the whole list. The method must sterilize, not just disinfect; and themethod must not destroy the item or render it useless unless there is noother choice. After considering a workable method, think of a methodthat would not work. Note: Where an object containing something isgiven, you must sterilize everything (for example, both the jar and thepetroleum jelly [Vaseline] in it). Some examples of sterilizing methodsare autoclave, ethylene oxide gas, dry oven, and ionizing radiation.room airseruma pot of soilplastic Petri dishesheat-sensitive drugscloth dressingsleather shoes from a thrift shopa cheese sandwicha flask of nutrient agaran entire room (walls, floor,etc.) rubber glovesdisposable syringescarcasses of cows with “madcow” diseaseinside of a refrigeratorwinea jar of Vaselinefruit in plastic bagsmilkorchid seedsmetal instrumentsmail contaminated…
- In the laboratory, autoclaving is required to prepare media for the growth of microorganism. What type of method of control does this involve? Dry Heat Moist Heat Chemical Radiation All of the optionsA chemical, produced by a microbe to inhibit the growth of other microbes, is isolated and then modified in a chemical reaction in the laboratory. Which of the following terms would most accurately apply? O Synthetic O Antibiotic O Phenolic O Microbistatic O Opportunisticplacing bacteria at ultracold temperatures is as effective at killing microbes as the use of dry heat in incineration. is is true/false?
- In sterilization, which among the supplies, instruments, glassware, etc. under the list of materials can be sterilized using either or both equipment below? List them down under the category: a) For “autoclaving” only, B) For Dry heat oven sterilization ,And C) Can be sterilized with either. Materials: 200-ml Erlenmeyer flask Stove 500-ml Erlenmeyer flask Autoclave 10-mL graduated cylinder Analytical balance 100-ml graduated cylinder pH meter Spatula Stirring rod 100-mL beaker Test tubes Distilled water Petri dish Stirring rod Alcohol lamp Glass dropperWhich of the following treatments would be most useful to remove microbes from air pumped into a surgical environment? Giant magnets Filtration Gaseous glutaraldehyde Gaseous alcoholA microbiologist has isolated a new strain of bacteria, and is trying to characterize aspects of its growth. Three flasks of the same media have different amounts of NaCl added. Other growth conditions are identical, and the flasks inoculated at the same time. At regular intervals over a 3 hour period, culture samples are taken and turbidity is measured. Here are the absorbance values over time in a table and graphed. Absorbance (OD600) Time (min) 20% NaCl 3% NaCl 0% NaCl 0 0.05 0.05 0.05 30 0.06 0.05 0.05 60 0.075 0.06 0.05 90 0.11 0.07 0.049 120 0.25 0.1 0.048 150 0.5 0.105 0.055 180 0.7 0.11 0.055 210 0.99 0.15 0.06 240 1.22 0.18 0.055 270 1.35 0.19 0.06 300 1.5 0.2 0.06 330 1.6 0.25 0.062 360 1.7 0.3 0.06 Based on these data, which of the following can be determined about this bacterium? It is psychrophilic. It…
- Of what practical importance are air borne microorganisms to the laboratory workers? What precautions should be taken to control laboratory contaminants? What precautions should be taken to control laboratory contaminants? Of what advantage is the using a solid and a liquid medium?Describe the five phases of a microbial growth curve observed when growing microbes are grown in broth culture and discuss the causes of eachIdentify the method of sterilization/ chemical agent described At 15psi, the temperature reaches 121 degree Celsius requiring only 15 to 20 minutes to sterilize the material. The material to be sterilized is exposed to live steam for 30 minutes for 3 consecutive days.