DNA replication and cancer cell proliferation both came to an end during S phase.
How can cancer be found?Weight fluctuations, such as unanticipated growth or reduction. Skin changes like redness, yellowing, or darkening, as well as open wounds that aren't healing or changes to existing moles. changes to the bladder or bowel habits. breathing problems or a persistent cough.
What kind of cancer has the highest mortality rate worldwide?Roche | Lung cancer is the most fatal cancer in the world. More people die from lung cancer each year than from breast, colorectal, & prostate cancers put together. 1 Despite the recent surge of novel, life-extending medications, lung cancer still has a high mortality rate.
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Whats the most common animal tested on today?
Answer: Mice and Rats
Explanation:
Why is taq dna polymerase used in pcr reactions rather than a normal dna polymerase?.
Explanation:
'Taq polymerase ' is thermostable DNA polymerase, a great resistant enzyme isolated from the bacterium Thermus aquatics.
A major limitations of early PCR method was that fresh DNA polymerase has to be added during every cycle and this repetitive step was not just tested but also greatly increased the likelihood of error.
Thermus aquatics is a thermophilic bacterium that can survive temperature up to 95°C so by using Taq polymerase in PCR technique eliminated the need to add fresh polymerase during every cycle.
Which coronary arterial branch is found in close association with the inferior border of the heart?.
Blood is delivered to the inferior part of the heart by the posterior descending artery branch. The left side of the heart receives blood from the LMCA.
What coronary artery is the weaker one?The right coronary artery supplies the inferior myocardium in the majority of patients. Due to left dominance, the left circumflex will supply the posterior descending coronary artery in roughly 6–10% of the population.
Which coronary artery lines the space between the right ventricle and right atrium?coronary artery to the right (RCA). The right coronary artery nourishes the SA (sinoatrial) and AV (atrioventricular) nodes, which control the heart's rhythm, as well as the right ventricle and right atrium.
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a child is noted to have recurrent respiratory infections that necessitate hospitalization. his laboratory tests demonstrate a decrease in t cells, b cells, and nk cells. he has decreased levels of circulating antibodies and is diagnosed with severe combined immunodeficiency. the enzyme that is defective in this disorder is important in which one of the following processes?
In severe combined immunodeficiency, the deficient enzyme is essential for a process that mediates: (C) the breakdown of adenosine.
Immunodeficiency refers to a condition where components of the immune system are missing from the body. These example of components are lymphocytes, macrophages, antibodies, phagocytes, etc. Severe combined immunodeficiency is a very rare genetic disease in which the genes of the immune cells are mutated
Adenosine is a purine nucleoside. It is most often present in the body in the form of adenosine triphosphate (ATP). It is the main ingredient of energy. It is one of the most important building blocks of RNA.
The given question is incomplete, the complete question is:
The child has been diagnosed with recurrent respiratory infections that require hospitalization. his lab tests show decreased t, b, and nk cells. has decreased levels of circulating antibodies and has been diagnosed with severe combined immunodeficiency. In which of the following processes is the defective enzyme important in this disease?
(A) The conversion of ribonucleotides to deoxyribonucleotides
(B) The de novo synthesis of AMP
(C) The degradation of adenosine
(D) The de novo synthesis of UMP
(E) The conversion of dUMP to dTMP
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a researcher has sectioned a mouse embryo and notices that certain muscle components (especially myosin) aggregate around the early-stage cartilage of the ribs. which of the statements is true of these presumptive muscles? please choose the correct answer from the following choices, and then select the submit answer button. answer choices because they associate with the ribs, these muscles are likely components of the diaphragm. because they associate with the ribs, these muscles are likely developing intercostal muscles. these muscles likely only serve a supportive role for the ribs and will play no role in breathing. these muscles (when they are fully developed) will help to maintain a constant volume in the thoracic cavity.
b. Since they associate with the ribs, these muscles are likely developing intercostal muscles.
Intercostal muscles is groups of muscles that found in between the ribs, and helps to move chest wall. Intercostal muscles primary function is helping in mechanical aspect of breathing by expanding and shrinking the chest cavity.
Collagen is a protein that makes skin cells strong and resilient. They provides structural support to the extracellular space of connective tissues. Because of its rigidity and resistance to stretching, it is the perfect combination for skin, tendons, bones, and ligaments.
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biology sem 1 which situation would most likely lead to improving or changing scientific theory?
The movement that could maximum in all likelihood lead scientists to alternate or enhance current scientific theory is the emergence of recent empirical proof that can be used to make exceptional predictions than the ones primarily based totally at the authentic principle.
A scientific theory can be described as a frame of information this is properly sustained via way of means of empirical (experimental) proof and consequently it may be used to make predictions approximately questions withinside the actual world.
A medical principle might also additionally alternate withinside the mild of recent empirical proof that results in the era of recent hypotheses and make new predictions.
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Which details from "the oasis: africa" best support the central idea that nature can be severe and unkind?.
"Sand in the scanty food, sand in the brackish water—water that was lukewarm from a clammy, loathsome water skin" portrays the details from "the oasis: Africa" best support the central idea that nature can be severe as well as unkind.
Because sand is contaminating food and water, this proves that nature is harsh and unforgiving. Additionally, brackish water has been mentioned. Saltwater can occasionally be found in brackish water, which is not pleasant to drink. We had wasted the entire day sweating in the heat and were terrified of being buried alive in the moving sand.
Also demonstrated in this text is how harsh and merciless nature can be. They run the risk of being taken up by the sands or the natural world because the heat is so unbearable, it says. There are errors in the other passages. When the Arab Sheikh pushed them through the first section, it was regarded as being against nature. In contrast to harsh and cruel, the third choice characterizes nature as delightful and lovely.
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Which organ provides support to the body and is where blood cells are produced?
Answer:
bones / bone marrow
Explanation:
Answer:
Skeletal system, bone marrow
Explanation:
The body has eleven organ systems. One is the skeletal system, consisting of a skeleton protecting your organs and providing support to your muscles and body. In adults, all of the blood cells are produced in the bone marrow, including red blood cells. Under some abnormal conditions, blood cells may be produced in other organs such as the liver, spleen or lymph nodes.
Which of the following is used to make complementary DNA (CDNA) from RNA? a. Restriction enzymes b. Gene cloning c. DNA ligase d. Gel electrophoresis e. Reverse transcriptase
Reverse transcriptase is used to make complementary DNA from RNA.
Which of the following is required to make complementary DNA?
Four basic reagents are needed to produce cDNA: mRNA as a template, dNTPs, reverse transcriptase, and primers.
What enzyme is used for cDNA?
In molecular biology, complementary DNA (cDNA) is synthesized from an RNA template in a reaction catalyzed by the enzyme reverse transcriptase (RTase).
What is the function of reverse transcriptase?
It uses an enzyme called reverse transcriptase to change a specific piece of RNA into a matching piece of DNA.
Thus, reverse transcriptase is used to make cDNA from RNA.
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starting from a single individual, which estimate best predicts the size of a population of bacteria at the end of a 2-hour time period if they reproduce by binary fission every 20 minutes? (assume unlimited resources and no mortality.)
The estimate that best predicts the size of the population of bacteria will be equal to 64 that is option A is correct.
Binary Fission may be defined as the method of producing new individuals in which the parent cells divide into two daughter cells of same kinds. The daughter cells have the characteristics of the parent cell as even the chromosomes are divided due to fission. It is given that the total time is 2 hours that is 120 minutes. Now, they reproduce every 20 minutes. So,
No. of individuals after 20 minutes = 2
No. of individuals after 40 minutes = 4
No. of individuals after 60 minutes = 8
No. of individuals after 80 minutes = 16
No. of individuals after 100 minutes = 32
No. of individuals after 120 minutes = 64
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Complete Question:
starting from a single individual, which estimate best predicts the size of a population of bacteria at the end of a 2-hour time period if they reproduce by binary fission every 20 minutes? (assume unlimited resources and no mortality.)
A) 64
B) 18
C) 128
D) 512
E) 1,024
which of the following is a consequence of acid deposition? group of answer choices it increases the likelihood of low-lying ground fogs. it results in offshore eutrophication, damaging coral reefs. it creates rainwater that can damage skin cells or cause cancers. it leaches important minerals from soils.
The answer states that one effect of acid deposition is that it leaches significant minerals from soils. When it rains, the acid that produced in the atmosphere is washed away and absorbed in the lithosphere.
Where does acid differing amounts take place?
If acid or chemical pollution in the atmosphere land on the surface of the Earth, this is known as acid deposition. This can happen from any type of precipitation, including rain, snow, and sleet, as well as from fog, gases, and dry particles.
What substances are present in acid deposition?
Acid deposition is created when sulfur dioxide (SO2), nitrogen oxides (NOx), and atmospheric moisture react to make sulphuric acid and nitric acid, respectively.
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catalyzes the production of , which then opens an ion channel that releases into the cell's cytoplasm.
Phospholipase catalyzes the production of IP3 which then opens an ion channel that releases Ca2+ into the cell's cytoplasm .
Phospholipase catalyzes the formation of diacylglycerol and IP3 also known as inositol triphosphate. IP3 promotes the influx of calcium ions into the cytoplasm while DAG activates protein kinase C.
When IP3 binds to IP3R primes to bind Ca2+, That allows the channel to open , for Ca2+ to flow out of the Endoplasmic Reticulum. Here acts a dual regulation of IP3Rs by IP3 and Ca2+ allows them to intervene regenerative signals propagated by Ca2+ . As a result Ca2+ is released to Plasma membrane for its cellular functions.
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which laboratory test identifies the bacteria obtained from a body specimen and determines effective antibiotics for treatment?
Bacterial culture tests identify bacteria from a body sample to determine which antibiotics are effective in treatment
A bacterial culture is a test to determine if you have a bacterial infection. It can be done on samples of blood, stool, urine, skin, mucus, or cerebrospinal fluid. This type of test allows health care providers to identify the cause of the infection and determine the most effective treatment. AST and AFST are types of laboratory tests that use bacterial and fungal cultures (growth) to determine how susceptible bacteria are to various antibiotics and antifungal agents. The test results will help us choose the best antibiotic to treat the infection
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After leaving Bowman's space, the filtrate, which contains electrolytes and wastes such as urea, enters:
(a) the endothelial cells.
(b) Bowman's capsule.
(c) the glomerulus.
(d) the proximal convoluted tubule.
After leaving Bowman's space, the filtrate, which contains electrolytes and wastes such as urea, enters the endothelial cells.
Bowman's space is the space between Bowman's capsule's visceral and parietal epithelium. Bowman's capsule is found in the renal cortex, which is a part of your kidney. The glomerular ultrafiltrate is the filtered fluid that enters Bowman's space. Bowman's capsule is located in the cortex, the outer part of the kidney. The capsule is essentially a sealed, expanded sac at the end of the tubule, with the remainder elongating into a twisted and looped tubule in which urine is formed. Bowman's capsule surrounds the glomerular capillary loops and aids in blood filtration from the capillaries. Bowman's capsule also serves a structural purpose by forming a urinary space through which filtrate can enter the nephron and travel to the proximal convoluted tubule.
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What is the process in which an mrna molecule is used to synthesize a specific polypeptide on a ribosome?.
Answer:
translation
Explanation:
During translation, ribosomal subunits assemble together like a sandwich on the strand of mRNA, where they proceed to attract tRNA molecules tethered to amino acids (circles). A long chain of amino acids emerges as the ribosome decodes the mRNA sequence into a polypeptide, or a new protein.
Define an unsaturated fatty acid. Provide one example of an unsaturated fatty acid.
Fatty acids that have one or more double bonds and can take in extra hydrogen atoms are known as unsaturated fatty acids.
They can be mono- or polyunsaturated fatty acids depending on the number of double bonds. The presence of water, oxygen, metallic atoms, or microorganisms can cause an unsaturated fatty acid (UFA) to go rancid. Antioxidants can stop the rancidity or lipid peroxidation of a UFA, which depends on how unsaturated it is.
UFA continues to be in a liquid condition at room temperature. UFA can be found in many organic foods, including beef, almonds, avocado, canola, and olives.
Oleic acid is a monounsaturated fatty acid.
Linoleic acid is a polyunsaturated fatty acid.
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What is the name given to the process by which a parent cell becomes two identical daughter cells?.
Mitosis is the process by which a parent cell becomes two identical daughter cells.
Mitosis is the process by which cell replication or regeneration occurs.
Two genetically identical daughter cells emerge from one parent cell. Mitosis is the proliferation and partitioning of chromosomes that carry genetic information.
It is a key process in unicellular eukaryotes because it is the mode of asexual reproduction. The main function of mitosis is to generate more cells.
Life begins in a single cell in a multicellular organism formed from two gametes. This single-celled multicellular organism carries only genetic information in the form of DNA, but does not have enough cells, so mitosis occurs and the cell divides into two cells. These two cells further divide in mitosis into 4 cells, then 8, 16, and 32.
It is vital to life because it creates new cells for growth and replaces dead cells. It depends on time, temperature and chemicals.
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which choice is not a mechanism of gene regulation that can take place after transcription is completed in eukaryotes?
A Pre-mRNA isn't always a mechanism of gene regulation that may take place after transcription is finished in eukaryotes.
Gene expression in eukaryotic cells is regulated via repressors as well as by transcriptional activators. Like their prokaryotic opposite numbers, eukaryotic repressors bind to unique DNA sequences and inhibit transcription.
In particular, gene expression is managed in two ranges. First, transcription is controlled by proscribing the amount of mRNA that is comprised of a selected gene.
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At what age can an infant start to eat rice cereal mixed with breast milk or formula?.
Answer:
6 months
Explanation:
6 months is a good age to start to introduce solid foods, which can include infant cereals. Breast milk or formula will continue to provide most of your baby's nutrition for the first 12 months.
Apirin ha been ued to treat pain and inflammation ince 400 BC explain why it i till a popular painkiller
Aspirin works by blocking the production of prostaglandins, the on-off switch in cells that regulate pain and inflammation, among other things
Each family of cells produces prostaglandins exclusively. Some versions are beneficial, some versions cause pain, and some versions tighten blood vessels and aid in the clotting of platelets.
The only prostaglandin that is useful to aspirin is a dead prostaglandin, though.
Therefore, it inhibits prostaglandins that protect the stomach lining as well as those that cause pain, clotting, narrowing of the blood vessels, and inflammation.
When you take aspirin or medications from the aspirin family, gastrointestinal bleeding results from it. They are referred to as NSAIDs or nonsteroidal anti-inflammatory drugs.
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which statement regarding the lymphatic system is true?
a. Lymphatic capillaries possess one-way valves. These valves permit the uptake of fluid from the body but do not allow the fluid to low back out of the capillaries into the intracellular spaces.
b. The pancreas contains lymphocyles and macrophages that monitor the blood for microbes.
c. Lymph nodes are sites of activation of neutrophils, which destroy microbes.
d. The thymus serves as the site for activation of B cells.
The lymphatic system aids in the uptake of interstitial fluid and activation of lymphocytes.
The lymphatic system is a network of thin tubes and lymph nodes located throughout the body. These tubes are known as lymphatic vessels or lymph vessels. The lymph system is an essential component of our immune system. It aids in the fight against bacteria and other infections.
Tissues and organs that generate, store, and transport white blood cells that fight infections and other diseases. The bone marrow, spleen, thymus, lymph nodes, and lymphatic vessels are all part of this system. Lymph fluid flows through lymph vessels and into the bloodstream.
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A tudent wanted to ee if the color of water impacted the increae in temperature, in degree Celiu (°C), after 30 minute in the un. Three beaker we're filled with 50milliliter (mL) of water. Five drop of food coloring were added to each beaker. The beaker were then placed on window ledge in direct unlight. Temperature reading were recorded every 10 minute for 30 minute
The test (independent) variable in this experiment is the color of the water. An independent variable is a variable that can be manipulated or vary in an experimental study to explore its effects. The independent variable is the cause.
Independent variables are the variable which the experimenter changes to test their dependent variable. A switch in the independent variable directly causes a change in the dependent variable. The result on the dependent variable is studied and noted.
There are two main types of independent variables; Experimental independent variables and Subject variables.
The independent variable is the component that can be changed in an experiment.
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Question 4 of 29
You burn a log on a fire. You use the fire to warm yourself and to light up the
room to read a book. Which energy transformation is taking place?
A. Chemical energy is transformed to light energy and thermal
energy.
B. Thermal energy is transformed to light energy and chemical
energy.
C. Nuclear energy is transformed to potential energy and thermal
energy.
O D. Chemical energy is transformed to nuclear energy and thermal
energy.
Answer:thermal heat
Explanation:
the fire is heating up the room
which of the following are advantages of using the spanning tree protocol (stp) in network segmented bridges? (select two.)
Advantages of using the spanning tree protocol (STP) in network segmented bridges:
STP lets you provide redundancy by using more than one connection between devices, which makes your network more stable.STP identifies the most efficient path through a bridged network.STP prevents message loops from forming.What is the Spanning Tree Protocol?The Spanning Tree Protocol (STP for short) is a network protocol that guarantees a loop-free network topology for Ethernet LAN links. The basic function of STP is to prevent link loops and the broadcast radiation that results from them. The result of STP is an unrestricted Ethernet frame loop that makes LANs usable.
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in which scenario does sunblock serve as a conditioned stimulus? responses ernesto received a free lifetime supply of sunblock when he won a trivia contest. ernesto received a free lifetime supply of sunblock when he won a trivia contest. sophia broke out in a painful rash when she spread sunscreen on her skin because she is allergic to an ingredient in it. sophia broke out in a painful rash when she spread sunscreen on her skin because she is allergic to an ingredient in it. helen pictures sunblock on her mantle to help her remember to buy some at the store. helen pictures sunblock on her mantle to help her remember to buy some at the store. lowell feels relaxed when he smells sunblock because it reminds him of his vacations at the beach. lowell feels relaxed when he smells sunblock because it reminds him of his vacations at the beach. sarah avoids sunblock because people compliment her on her tan when she goes without it.
When Lowell smells sunscreen, he feels calm because it brings back memories of his beach vacations. Because she gets compliments on her tan when she doesn't wear sunscreen, Sarah avoids using it.
What is meant by sunblock nerve?A substance that is applied to the skin to prevent sunburn (e.g., by physically obstructing UV light); additionally, it contains an active component, such as titanium dioxide; see sunscreen.
lessen your chance of developing skin cancer and skin precancers.
Regular daily usage of SPF 15 sunscreen can cut your risk of melanoma by 50% and squamous cell carcinoma (SCC) by roughly 40%, respectively. Aid in preventing wrinkles, sagging, and other signs of premature ageing of the skin brought on by the sun.
UV rays are blocked and absorbed by sunscreen using a combination of chemical and physical particles. UV light from the skin is reflected using physical particles like zinc oxide and titanium dioxide.
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cranial nerve are desensitized when a dentist gives a shot of novocain which prevents pain impulse transmission from the teeth and gums
Trigeminal cranial nerves are desensitized when a dentist gives a shot of Novocain which prevents pain impulse transmission from the teeth and gums.
Trigeminal nerves are the one responsible for the transmission of pain, touch and temperature related impulses form the face to the brain. One trigeminal nerve runs to the right side of the head, while another nerve runs to the left.
Novocain is the local anesthesia that causes the loss of feeling from the skin and mucous membrane. Currently the anesthetic has been discontinued from usage because cases were obtained where the patients suffered from allergic reactions due to it.
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stable personality differences are found: please choose the correct answer from the following choices, and then select the submit answer button. answer choices in humans, primates, and most mammals but not in other types of animals. only in humans and other primates. only in humans. in many types of species.
Stable personality differences are found in many types of species. So, option D is the correct answer.
A stable personality can be defined as personality traits that are discernable over time. Traits such as these are predictable.
Studies have found that a personality is found in all species of animals. Earlier it was believed that humans and primates were the only sentient beings out there but in more recent studies it has been found that other species are capable of displaying a personality and other such traits as well.
Hence, a stable personality can be found in many types of species. Therefore, option D is the answer.
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Which is an example of nucleotides?
The four nucleotides that makeup DNA are adenine (A), thymine (T), guanine (G), and cytosine (C) (C).
What are nucleotides?A chemical molecule known as a nucleotide serves as the foundation for DNA and RNA. They also play roles in metabolic processes, enzyme reactions, and cell signaling. A phosphate group, a 5-carbon sugar, and a nitrogenous base make up a nucleotide. Adenine, cytosine, guanine, and thymine are the four nitrogenous bases found in DNA. Instead of thymine, uracil is found in RNA. All known living things have genetic material made up of a chain of nucleotides. They perform numerous other tasks, such as acting as molecules that move energy and as messengers, in addition to storing genetic information.
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4. What stage of cell division is shown?
a) anaphase of mitosis (2N=2)
b) anaphase I (2N=2)
c) anaphase II (2N=2)
d) anaphase I (2N=4)
e) anaphase II (2N=4)
5. What stage of cell division is shown?
a) metaphase of mitosis (2N=3)
b) metaphase 1 (2N=3)
c) metaphase II (2N=3)
d) metaphase | (2N=6)
e) metaphase II (2N=6) (right)
Answer:
Does a picture go with the questions?
Which of the following RNA sequences are present in a mature mRNA after RNA processing occurs? (You may choose more than one.) Group II Intron TATA bOX Exons Stop codon polyA tail Introns
PolyA Tail, Exons, Stop codon
Using next-generation sequencing, the method known as (RNA-sequencing) may analyze the quantity and sequences of RNA in a sample (NGS). It examines the transcriptome to reveal which genes encoded in our DNA are activated or inactive, and to what degree.
RNA sequencing (RNA-Seq) makes use of high-throughput sequencing techniques to shed light on a cell's transcriptome. RNA-Seq offers far larger coverage and better resolution of the dynamic dynamics of the transcriptome than earlier Sanger sequencing- and microarray-based approaches.
Finding the precise arrangement of nucleotides—the fundamental building blocks—within a DNA molecule is known as DNA sequencing. DNA sequence knowledge has become essential in cancer research.
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