What is the experimental evidence that demonstrates direct evidence that chemical carcinogens are able to produce oncogenes?

Q: Which of the following specimens have a post-orbital bar or closure? (select all that apply)

A: Postorbital bars strengthen the lateral orbital wall. Muscle pulleys, ligaments, and other…

Q: What does it mean if a person tests positive for IgM but not IgG of a particular disease? O That…

A: What is Antibody - Antibodies or immunoglobulins are protein products produced by animal immune…

Q: Explain the importance of the modern synthesis to our current views of evolution (including our…

A: Introduction The modern synthesis also called as "synthetic theory of evolution" merges the concepts…

Q: Disheveled: O is a G protein O inactivates beta-catenin O inactivates the APC-containing complex O…

A: Introduction: The Wnt signalling system controls key aspects of cell fate determination, cell…

Q: Hydrogen peroxide drops on a culture is used to determine     which carbohydrates a bacteria can…

A: Hydrogen peroxide is used for identifying the type of bacteria. Its helps in identifying the aerobic…

Q: Anti-A Anti-B Anti-RH If the patient is AB-, they can receive blood from: If the patient is O+, they…

A: ABO blood group system was discovered by Karl Landsteiner in 1901. There are 29 blood group system,…

Q: Which of the following media selects for gram negative bacteria by inhibiting the growth of gram…

A: Selective media:- it usually allow the growth of a particular microbe and inhibit the growth of…

Q: 8. Enter the hall of Primitive Mammals and find the advanced trait Placenta. List 4 animals that…

A: 8. Examples of placental animals are:- Elephantulus intufi ,Elephas maximus , Diceros bicornis, Homo…

Q: why you should become a research scientist

A: Introduction A Research scientist is an individual designated to conduct and analyse lab-based…

Q: . What is the difference between organic and inorganic molecules? B. Name four major groups of…

A:

Q: Identify the factors regulating blood pressure.

A: Blood pressure is defined as the force per unit area exerted by the blood on the wall of blood…

Q: A. What are the 4 “Koch’s Postulates”?   B. Are they still valid today? How would we use them to…

A: Robert Koch was a German physician and microbiologist. He was discoverer of the specific causative…

Q: the importance of inheritance of how steps in meiosis change chromosomes through nondisjunction.

A: Introduction Crossing over is the swapping of genetic material that happens within the germline.…

Q: Q43

A: Phytoplanktons are microscopic free floating photosynthetic organisms that form the basis of food…

Q: A. Instructions: tify what is wrong in the following situations and provide feedback/comment on how…

A: Skin contains a fatty substance called 7 dehydrocholesterol. It absorbs UV radiation from the…

Q: Could you please mention/explain some limitations and extensions (three each) associated with the…

A: Genetic engineering, often known as genetic alteration, is the use of biotechnology to directly…

Q: Due to human activities more carbon dioxide (CO2) is dissolving into the air, the ocean takes up…

A: Introduction Ocean acidification is a process of decreasing the pH of the ocean (increased acid) due…

Q: How is an encapsulated CNS tumor different from a nonencapsulated CNS tumor?

A: A tumor is formed due to uncontrolled cell division.

Q: All flowering plants have two types of vascular tissues. Differentiate each in terms of its function…

A: VASCULAR TISSUE: Vascular tissue is a complex of conducting tissue that is made up of more than one…

Q: Describe how recombination changes the genetics of organisms o Describe how non-allelic…

A: Recombination is a process in which two DNA segments interact and change segments. This process is…

Q: What is the most potent naturally occurring glucocorticoid, and how is its secretion related to that…

A: Glucocorticoids are a class of steroid hormones that are produced in the adrenal cortex. They are…

Q: Enzyme Structure & Function A FIGURE 1 INTRODUCTORY QUESTIONS A. 650 m B. 1400 m 1. If you're going…

A: Every biological system needs energy to perform the physical and cellular activities that keeps the…

Q: In general, fever is controlled by O interferons neutrophils O inflammation O the hypothalamus

A: Introduction: A fever is defined as a body temperature that is higher than usual. It's an indication…

Q: What two organs are the sites of action of parathyroid hormone (PTH)?

A: Parathyroid Gland Parathyroid hormone is secret by the Parathyroid gland. It is a set of 4 gland in…

Q: Strain Wild-type 972 Mutant ede9-50 Growth temperature (°C) 25 35 Table 1 Characteristics of wild…

A: Asci are the cells that bear sexual spores. They are produced when two yeast haploid strains with…

Q: Compare and contrast the actions of alpha, beta, delta, and F cells.

A: There are four main types of cells in the immune system: alpha, beta, delta, and F cells. Each type…

Q: What are two differences between the symptoms of migraine and cluster headaches?

A: Migraine and cluster headaches are two kinds of headaches. While both induce excruciating pain in…

Q: 177 3 The figure above represents results observed from the differential gene expression lab. Lane 3…

A: PCR is the polymerase chain reaction. This is the molecular technique used for amplification of the…

Q: Describe why the concentration of water should be nearly the same inside the cell and in the…

A: Introduction  All forces acting on the body must balance out with an equal and opposing force in…

Q: What are the risk factors for adult NHL?

A: Adult NHL is adult non hodgkins lymphoma is a type of a malignant cancer that starts in the lymph…

Q: A patient suspected to have a UTI infection had a metallic green growth on EMB agar and also had…

A: The correct option for the answer is Option B E.coli The positive test on Blood agar suggested that…

Q: "Presence of lactobacillus species, alpha-streptococci, dna diphtheroids in cultured urine specimen…

A: The urinary system is one of the vital excretory systems in the body. It helps in removing wastes…

Q: Q4

A: Introduction:- Bacteria are divided into two categories based on their staining (gram stain)…

Q: How does obesity contribute to the development of type 2 diabetes?

A: Type 2 diabetes is a chronic condition where body doesn't use insulin correctly resulting in the…

Q: Q45

A: Anaerobic fermentation: It's the process of oxidation of carbohydrates in the absence of oxygen. In…

Q: Medical Application of Biopolymers polysaccharides Produced by Bacteria pseudomonas aeruginosa

A: Introduction Bipolymers are natural polymers either synthesised chemically or produced by various…

Q: Discuss the importance of simultaneously using multiple tests to diagnose malaria

A: Introduction Malaria is an illness caused by the bite of infected mosquitoes that transmits the…

Q: Explain the Workings of an oil immersion lens.

A: Oil immersion lens: A type of objective lens that can focus when there is a drop of liquid (such as…

Q: What mutations can be caused by a single base change in coding exons?

A: A mutation is  any kind of alteration in the DNA/mRNA sequences. It is mainly caused due to the…

Q: What is concentration?

A: In biology, we measure some of substances. Also, perform various tests where we prepare various…

Q: Q9. Describe the basis for selectivity of EMB agar Mac Con key agar and mannitol Salt agar.

A: Selective media typically favours the growth of a desired organism while inhibiting the growth of…

Q: McConkey agar plate is used to determine     which carbohydrates a bacteria can ferment     if the…

A: To grow bacteria, required nutrients should be incorporated into the culture media. These culture…

Q: A benefit of second messengers is that O they decrease the effect of negative hormones. O they…

A: The exposure to extracellular signalling molecules to the cell leads to release of intracellular…

Q: What is conformation?

A: All living beings are composed of cells and cells are composed of biomolecules.

Q: "If you find purple colonies with metallic green sheen growing on your EMB plate following an…

A: Introduction : Gram-negative bacteria can be identified using the selective stain Eosin-Methylene…

Q: Why are the principal symptoms of brain tumors in children related to brainstem function?

A: The brain is the main organ of the human body. It is the main part that controls and coordinates all…

Q: Identifiy the Isolation technique in the formation of an isolated colony.

A: Introduction Culture is referred to the process of growing the cell outside the animal or plant body…

Q: What is the optimal pH for catalase? Why do you think it become less effective at high or low pH

A: A protein called catalase is an enzyme that catalyses or quickens chemical  processes. In the human…

Q: What is the optimal temperature for catalase? Why do you think it becomes less effective at high or…

A: Catalase is an enzyme of liver which helps in the break down of hydrogen peroxide which is very…

Q: Toxell et al. (2003) examined the heritability of an adaptational response to exercise in rats. They…

A: Metabolism is the process by which energy is produced by the organism. In many organisms, some of…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.