Dna replication occurs by the addition of nucleotides to the end of the dna molecule. results in the formation of four new dna strands. produces two daughter dna molecules that are complementary to each other. uses each strand of a dna molecule as a template for the creation of a new strand. begins when two dna molecules join together to exchange segments.
A patient with a terminal disease is unresponsive, not breathing, and without a pulse. the family states that the patient has a do not resuscitate (dnr) order signed by her medical doctor, but they cannot find it. the emt should:
If a terminally ill patient (example: on Hospice) is a full code at that point but the family cannot present you with a physical original and fully completed DNR, the EMT MUST begin resuscitation measures until the family can present the original DNR. You will have to work the code until you reach the hospital and the family can sign a new DNR at the hospital.
The ethics behind this are tricky but legally, you MUST work the code until the DNR is presented. However, to be kind, you don't have to go overboard with your interventions. You don't have to intubate the individual, you can do with a simple BVM and bag the patient while performing chest compressions.
chromatids that are attached at the centromere are called what kind of chromatids?
How many earths could fit in the universe?
Choice of diet profoundly affects human health. only two common lifestyle habits are more influential than diet: _____ and _____.
Give a scenario where a cell may need to perform a form of endocytosis
Answer:
A scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. A scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.
Explanation:
What are pollutants that are put directly into the air as a result of human activity?
What loop prevention technique is implemented by distance vector routing protocols?
Routing loops are prevented in distance vector routing protocols through techniques such as 'route poisoning' and 'hold-down timers'. These are essential for maintaining network efficiency and preventing congestion due to redundant data transmissions.
The loop prevention technique that is implemented by distance vector routing protocols is called 'route poisoning.' Route poisoning is a method used to prevent routing loops by marking a downed route as having an infinitely high metric, which represents the distance to that route as being infinite. This effectively informs all the nodes in the network that the route is unreachable, thereby preventing data packets from being sent in an infinite loop. Another common technique is the 'hold-down timer,' which prevents updates about changes in network topology from being accepted for a certain period of time to allow the network to stabilize.
Routing loops can create significant network congestion and can lead to redundant transmission of data packets. Avoiding such loops is critical to maintain an efficient and functional network. It is indeed possible to design and select routes in a way that minimizes the need for these protection techniques, though it's equally important to employ them to safeguard against potential routing issues.
As you walk home from your friend's house, you work up a pretty good sweat. your sweating is due in part to the functioning of your ________ system.
a. somatic nervous
b. autonomic nervous
c. central nervous
d. endocrine
In a neuromuscular junction, synaptic vesicles in the motor neuron contain which neurotransmitter
The synaptic vesicles in a neuromuscular junction of a motor neuron usually contain the neurotransmitter acetylcholine, which helps in sending signals from the neuron to the muscles and triggering muscle contraction.
Explanation:In a neuromuscular junction, the synaptic vesicles found in the motor neuron typically contain the neurotransmitter known as acetylcholine. These vesicles are located at the ends of neurons, which are tiny structures involved in sending signals from the neuron to the muscles. When an action potential or electrical signal reaches the end of a nerve, the vesicles essentially fuse with the nerve cell's membrane. This action discharges the acetylcholine into the synaptic cleft, which is a tiny space between the nerve cell and the muscle fiber. The acetylcholine binds to receptors on the muscle fiber, triggering muscle contraction.
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How do blood cells interact with muscle cells?
Final answer:
Blood cells interact with muscle cells through clotting mechanisms and the delivery of oxygen and nutrients.
Explanation:
Blood cells interact with muscle cells through various mechanisms. One important interaction occurs during blood clotting. When the cells lining a blood vessel are damaged, they release a protein receptor called tissue factor. This causes platelets to adhere to the wall of the damaged blood vessel, stimulates adjacent smooth muscle cells to contract, and initiates a series of steps that lead to clot formation.
Another interaction occurs during oxygen and nutrient delivery to muscle cells. Red blood cells, which contain hemoglobin, transport oxygen and nutrients to muscle cells. Oxygen binds to hemoglobin and is released to muscle cells, providing them with the necessary energy for contraction.
In summary, blood cells interact with muscle cells through clotting mechanisms and the delivery of oxygen and nutrients.
Sleep may decrease activity of neurons associated with ________, suggesting an important cognitive benefit of sleep
George has attached ear lobes. Barbara has free ear lobes, but she is heterozygous for this trait. What are the chances of their child having free ear lobes?
Food chains show energy transfer between organisms. The size of a food chain can vary, yet there is a limit to the number of levels that a food chain can reach. Why is there a limit to the number of levels that a food chain can reach?
Plants are not infinite in number.
Producers are limited by consumers.
Carnivores are too large to be eaten.
Energy is lost at each trophic level.
The correct answer is option Energy is lost at each trophic level.
In a Ecological pyramid, the energy is transferred from the producer to the consumer level. The ecological pyramid is triangular in structure, this is because the number of organism on each successive trophic level is less than the preceding one or the one below it.
The reason of this shape of ecological pyramid is on subsequent trophic level, the amount of energy transferred is only 10%. The rest of the energy is dissipated in the environment in the form of heat. As only 10% of total energy is transferred to the subsequent level, The amount of energy reaching to tertiary consumer is very less that it cannot meet the energy demand of next level.
Answer:
D
Explanation:
Dural venous sinuses carry blood and cerebrospinal fluid (csf).true or false
Cytotoxic t (tc) cells only respond to __________.
When assessing a pregnant female, the nurse documents gravida 3, para 2 regarding obstetrical history in the health record. which situation correctly corresponds to the obstetrical history of the woman?
Which term refers to the tiny pieces that make up a mosaic?
Answer:
Tessera:refers to the tiny pieces that make up a mosaic
Explanation:
Mosaic is an image or art which is made from the collection of the small pieces of stone, colored glass or other types of material, Most of the Mosaics are made from small pieces of glass or stone of different types of colors called as tessera. It is used for the interior decoration work.
Tessera is the term refers to the individual tiny pieces that are used to make a mosaic, it is also called as abaculus.
The tiny pieces are made of cube shaped small tile, tesserae are mostly made of glass, clay, stone, ceramic and mirror.
In 200 BCE tesserae was used in the Greek Hellenistic Mosaics.
Thus Tessera :refers to the tiny pieces that make up a mosaic
Before Starch can enter a cell it must be
Starch must be digested to form simple sugars before entering a cell. Therefore, the correct option is (3) digested to form simple sugars.
Before starch can enter a cell, it must undergo digestion to form simple sugars. Here's a breakdown of the process:
1. **Hydrolysis:** Starch is a complex polysaccharide composed of glucose molecules bonded together. Enzymes such as amylase break down starch molecules into simpler forms.
2. **Formation of Simple Sugars:** Through hydrolysis, starch is broken down into its constituent monosaccharides, primarily glucose molecules. This breakdown occurs in the digestive system, particularly in the mouth (with salivary amylase) and the small intestine (with pancreatic amylase).
3. **Absorption:** Once starch is broken down into simple sugars like glucose, these molecules can be absorbed by the cells lining the small intestine. This absorption occurs through the intestinal epithelium and into the bloodstream.
So, the correct option is (3) digested to form simple sugars.
The complete question is here:
Before starch can enter a cell, it must be
(1) absorbed by simple sugars
(2) diffused into simple sugars
(3) digested to form simple sugars
(4) actively transported by simple sugars
A doctor who specializes in diagnosing and treating diseases and disorders of the eyes and vision.
User satisfaction is a key barrier in transition to a thin client environment
a. True
b. False
Answer:
answer is true.
Explanation:
Bc it ez
Which symptom is not associated with vitamin b deficiency?
A symptom that is not associated with vitamin B deficiency is weight gain. Contrarily, vitamin B deficiency can cause symptoms like fatigue, weak muscles, poor concentration, and in some cases, loss of appetite and weight loss.
Explanation:Vitamin B deficiency is typically associated with several symptoms such as fatigue, weak muscles, poor concentration, and anemia. However, an example of a symptom that is not associated with vitamin B deficiency is weight gain. Although vitamin deficiency can affect our health in various ways, such as leading to fatigue or poor concentration, there's no direct link between vitamin B deficiency and weight gain. Contrary to this, some people may experience loss of appetite and weight loss due to vitamin B deficiency.
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Vitamin B deficiency is linked to several symptoms, such as irritability, depression, and anemia. However, brittle or soft bones, hair loss, and insensitivity to insulin, which are symptoms associated with deficiencies in other vitamins, are not typically seen in Vitamin B deficiency.
Explanation:Vitamin B deficiencies are associated with a variety of symptoms, including irritability, depression, peripheral neuropathy, anemia, gastrointestinal disorders, and many others. However, symptoms such as soft or brittle bones, which typically indicate a Vitamin D deficiency, are not associated with Vitamin B deficiency. Other non-related symptoms may include hair loss and insensitivity to insulin, which are more commonly linked to Biotin deficiency.
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genes determine a person's eye color by coding for ____that affect eye color
What enables pcr to amplify just one location (locus) in a person's genome as opposed to several loci scattered throughout the genome (what gives pcr its specificity)?
A lesion in _____ area of the brain would most likely result in a disruption of language comprehension and expression
Answer:
A lesion in the Broca's area of the brain would most likely result in a disruption of language comprehension and expression.
Explanation:
There are two parts of the brain that are linked to speech.
Wernicke's area also called Wernicke's speech area andBroca's area.Wernicke's Area is wired for the comprehension of written and spoken language while Broca's area adapted for in the production of language.
Broca's area, which is located in the frontal lobe of the brain, is connected to the production of speech.
A recent study showed that it also plays a significant role in the comprehension of language. Working memory and the Broca's area both function simultaneously to allow a person to express themselves verbally.
Cheers
Which should a nurse thoroughly evaluate before a bone marrow transplant (bmt) procedure?
Which cell organelles can be seen changing position in the moving cytoplasm of amoeba?
N multiple sclerosis, identify the part of a neuron that typically hardens and disrupts the flow of information through neurons.
What is the ploidy of organisms that have two sets of chromosomes? what is the ploidy of organisms that have two sets of chromosomes? 3n 4n n 2n?
The ploidy of an organism which has two sets of chromosomes is 2n. These organisms are diploid. Thus, the correct option is D.
What is Ploidy?Ploidy is the number of complete sets of chromosomes present in a cell, and hence the number of possible alleles for the autosomal and pseudo-autosomal genes.
The sets of chromosomes is the number of maternal and paternal chromosome copies in each homologous chromosome pair, which chromosomes naturally exist as.
The organism which has two sets of chromosomes is a diploid organism (2n).
Therefore, the correct option is D.
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How does a polysaccharide differ from a disaccharide?
Disaccharides are pairs of monosaccharides, while polysaccharides are large polymers composed of hundreds of monosaccharide units. Glycosidic bonds link the monomeric units in both cases, but their structure and function significantly vary. Sucrose, lactose, and maltose are examples of disaccharides, while starch, glycogen, cellulose, and chitin are examples of polysaccharides.
Explanation:The main difference between a polysaccharide and a disaccharide lies in the number of monosaccharide units they are composed of and their nature. A disaccharide is a pair of monosaccharides. Disaccharides, for example, sucrose, lactose, and maltose, are formed via dehydration synthesis and are linked together by glycosidic bonds.
On the other hand, polysaccharides, also known as glycans, are large polymers composed of hundreds of monosaccharide units. Polysaccharides like starch, glycogen, cellulose, and chitin are expressed through multiple monosaccharides, linked by glycosidic bonds. They may form branched or unbranched chains and hold different types of monosaccharides.
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