A student studying the phosphate runoff into the Chattahoochee River basin near Atlanta, Georgia, developed the following model to show the impact of the mandatory restrictions that were put in place during 1995 to limit the runoff.
Which factors most likely contributed to the trends in phosphate runoff before the restrictions were implemented? Select two options.
Responses:
Increases in new of plant growth in the wetlands around the river
Weathering events happening on surrounding mountains
The application of fertilizer resulting in agricultural runoff
An increase in the number of animals eating plants
Uplifting of rock masses from recent earthquakes
Answers
The factors which most likely contributed to the trends in phosphate runoff before the restrictions were implemented is as a result of the following below:
Weathering events happening on surrounding mountainsApplication of fertilizer resulting in agricultural runoff.What is Fertilizer?This is referred to as a substance which contain chemical elements and is applied to the soil for the increase in growth and productivity. it is commonly used in agriculture to provide the required nutrients to the plants.
Fertilizer contain elements such as nitrogen, phosphate etc which seeps into the soil during weathering process which involve water and when there is an agricultural runoff which is therefore the reason why option B and C were chosen as the correct choice.
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Related Questions
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.
Answers
Answer:thermal heat
Explanation:
the fire is heating up the room
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.
Answers
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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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?
Answers
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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What is the process in which an mrna molecule is used to synthesize a specific polypeptide on a ribosome?.
Answers
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.
If a cell is no longer able to differentiate into any type of tissue, it has become ________.
Answers
If a cell is not able to differentiate into any type of tissue it has differentiated.
Generic embryonic cells become specialized cells through cell differentiation. Gene expression is a process that causes something to happen. The precise combination of genes that are turned on or off (expressed or repressed) determines how a cell functions, and this is known as gene expression. Certain signals in your body, both inside and outside of your cells, cause gene expression.
All multicellular creatures' development, growth, reproduction, and long-term viability depend on the regulation of cell differentiation. Not only neurons but other cells also lose their capacity to divide as they age.
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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
Answers
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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Which is an example of nucleotides?
Answers
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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Why is taq dna polymerase used in pcr reactions rather than a normal dna polymerase?.
Answers
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.
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.
Answers
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 choice is not a mechanism of gene regulation that can take place after transcription is completed in eukaryotes?
Answers
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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explain why having different enzymes for one or more steps is critical for regulation of the two pathways.
Answers
To control the entire reaction speed, the activation of these catalysing enzymes must be controlled.
Why does the body need so many different enzymes?Due to its extensive range of intricate metabolic processes and activities, the human body requires a wide variety of enzymes. The different metabolic chemical reactions that occur are catalysed by the enzymes, and once an enzyme has catalysed a reaction, it is no longer functional and must be replaced.
By employing the byproducts of enzymatic processes to block more enzyme activity, cells have evolved to use feedback inhibition to control enzyme activity in metabolism. Anabolic and catabolic processes, for example, must continue in accordance with the needs of the cell.
Enzymes tend to be tightly regulated because they direct and govern a cell's metabolism. We'll examine elements that can influence or regulate enzyme activity in this article.
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Define an unsaturated fatty acid. Provide one example of an unsaturated fatty acid.
Answers
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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how does dna code for an organism?
PLS ANSWER
Answers
Explanation:
Genetic Code
Each gene's code uses the four nucleotide bases of DNA: adenine (A), cytosine (C), guanine (G) and thymine (T)
What is the name given to the process by which a parent cell becomes two identical daughter cells?.
Answers
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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suppose these two chromosomes are found in a cell nucleus during prophase. what is relationship between chromatids
Answers
Suppose those chromosomes are discovered in a cell nucleus throughout prophase. A is equal to B, and C is identical to D in dating among chromatids.
During prophase, the complicated DNA and proteins contained within the nucleus, called chromatin, condenses. The chromatin coils and turns increasingly more compact, ensuing in the formation of visible chromosomes.
In the course of prophase II, the chromosomes condense, and a brand new set of spindle fibers bureaucracy. The chromosomes begin transferring closer to the equator of the cellular. at some stage in metaphase II, the centromeres of the paired chromatids align alongside the equatorial plate in each cell.
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catalyzes the production of , which then opens an ion channel that releases into the cell's cytoplasm.
Answers
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 organ provides support to the body and is where blood cells are produced?
Answers
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.
cranial nerve are desensitized when a dentist gives a shot of novocain which prevents pain impulse transmission from the teeth and gums
Answers
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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At what age can an infant start to eat rice cereal mixed with breast milk or formula?.
Answers
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
Answers
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 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.
Answers
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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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.
Answers
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 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.
Answers
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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which laboratory test identifies the bacteria obtained from a body specimen and determines effective antibiotics for treatment?
Answers
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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which of the following are advantages of using the spanning tree protocol (stp) in network segmented bridges? (select two.)
Answers
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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which structure is highlighted? external intercostal muscle sternum internal oblique muscle ribs and costal cartilage
Answers
Ribs and coastal cartilage is highlighted.
Costal cartilages are part of hyaline cartilage which serve to drag out the ribs forward and contribute to the elasticity of the walls of the thorax.
Costal cartilage present between your ribs and your breastbone permits the rib cage to be more flexible and also increases the ability to expand when you breathe.
This impact your rib cage that can cause a tear in this costal cartilage. Any damage in Rib cartilage creates a very painful situations. It often leads to severe pain while taking deep breaths, and even more pain while coughing.
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Which details from "the oasis: africa" best support the central idea that nature can be severe and unkind?.
Answers
"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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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)
Answers
Answer:
Does a picture go with the questions?
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.
Answers
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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Whats the most common animal tested on today?
Answers
Answer: Mice and Rats
Explanation: