Answer:
DNA
It can contain the purine adenine
This contains the pyrimidine thymine
The sugars are connected with a 3'-5' phosphodiester link.
It contains equal amounts of guanine and cytosine. The percentage of A-T ,C-G are the same in DNA,,they are linked by hydrogen bonds.But varies in RNA.
Explanation:
.RNA
It can contain the purine adenine.
It can contain the pyrimidine uracil
This contains the sugar ribose. This is a 5C sugar with one oxygen atom deficient.The forms the lever for holding the bases and phosphate group
The sugars are connected with a 3'-5' phosphodiester link.This is the backbone of both DNA and RNA.It is formed between the sugars and the phosphate groups in both DNA and RNA.
None is made of base composition, the %T = %G. This is wrong because purines must pair with pyrimidine,but not two purines or pyrimidine pairing as shown,
Bases are attached to sugars in an alpha N-glycosides linkage.This is wrong the beta N-glycisidic bonds are the linkages
Biochemical and genetic experiments have demonstrated that the _________ of tRNA are important for recognition by its cognate aminotransferase-tRNA synthetase.
Answer: Acceptor stem and anticodon loop.
Explanation:
Transfer RNA (tRNA) is a small RNA nucleic acid involved in protein synthesis (translation). Each tRNA molecule has two important areas:
A region of trinucleotides, called the anticodon A region where a specific amino acid binds.During translation, the ribosome reads the sequence of the mRNA in groups of three bases to assemble the protein. So, in the mRNA chain there are codons, set of three bases, which determine the amino acid to be added to the peptide chain. The tRNA transfers the amino acid to the ribosomes, and then arranges them along the messenger RNA (mRNA) molecule. Then, the tRNA must have an anticodon that is complementary to the codon. Each type of tRNA is specifically combined with 1 of the 20 amino acids to be incorporated into proteins.
This means, during translation, each time an amino acid is added to the growing chain, a tRNA molecule is formed whose base pairs have a complementary sequence with mRNA molecule, ensuring that the appropriate amino acid is inserted into the protein. So, tRNA is a key link between RNA transcription and the translation of that RNA into protein. On the other hand, aminotransferases are enzymes responsible for attaching amino acids to the 3ʹ‐end of cognate tRNAs.
The acceptor stem is the site of attachment of amino acids to tRNA, and anticodon loop is the site of tRNA that is complementary to the codons found in mRNA (that determine the amino acid that will be added) This means, both parts are important for recognition, because the acceptor stem is where the amino acid is, and the anticodon loop ensures that the appropriate amino acid is inserted into the protein.
Enzymes are protein molecules which are made up of long chains of
What alternate form of genes do nucleic acids have that allows them to offer variability?
Answer:
allales
Explanation:
an allele is the variant from a gene
Answer:
A. allales
Explanation:
Mitochondrial and chloroplast genomes typically Mitochondrial and chloroplast genomes typically encode some of the proteins needed for aerobic respiration and photosynthesis, respectively, as well as ribosomal and transfer RNA. encode for ribosomal and transfer RNAs. encode all of the proteins needed for aerobic respiration and photosynthesis, respectively. encode some of the proteins needed for aerobic respiration and photosynthesis, respectively. are composed of primarily noncoding DNA.
Answer:
The correct answer is "encode some of the proteins needed for aerobic respiration and photosynthesis, respectively, as well as ribosomal and transfer RNA".
Explanation:
Most organisms have a mitochondrial or a chloroplast genome in addition to the main genomic sequence located in the cell nucleus. The genes that are located in these organelles' genome include the genes that are used directly in the mitochondrion or chloroplast , including: proteins needed for aerobic respiration and photosynthesis (for instance genes involved in oxidative phosphorylation), respectively, as well as ribosomal and transfer RNA, which serve to the translation of proteins.
Where does cellular respiration get
the energy to make ATP? *
A. Chemical energy from sugars
B.Light energy from the Sun
C.Energy stored in the covalent bonds of
water molecules
D.Energy stored in the covalent bonds of
carbon dioxide molecules
Answer:
I believe A.
Explanation:
Cellular respiration gets energy to make ATP from the food you eat, so, A.
Watch the video and answer the question in 2 or 3 paragraphs. What are the main causes of air pollution? Discuss some effects of air pollution and provide possible solutions to this environmental issue. https://youtu.be/_dTtvtlct9k
Answer:
Explanation:
Exhaust from vehicles, factories, volcanoes and wildfires are the major causes of air pollution.
Effects of air pollution include many diseases. For example heart disease, lung disease, respiratory diseases etc... They also damage nerves, brain, kidney, lungs, heart etc...
Solution to air pollution:
We should replace the fossil fuels with natural energies like solar, wind, geothermal, hydro etc...
Waste water treatment
Dust control
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Vaccination is a process of injecting a dead or weakened form of a pathogen into the body. How does this help strengthen the immune system? It allows the body to increase its internal temperature. It allows the body to regulate the inflammatory response. It allows the body to keep pathogen information for future infections. It allows the body to increase its desire to eat healthy food.
Answer:
It allows the body to keep pathogen information for future infections.
Explanation:
Vaccination is the process whereby a substance called VACCINE is injected into body in order to prepare the immune system for resistance against infections. A vaccine contains the harmless or dead version of a pathogen called ANTIGEN, which functions to give the immune system defense mechanism against that form of pathogen in future.
The vaccine works by stimulating the immune system of the body to fight against the antigens in the same way it will fight against an actual pathogen in the future. Hence, the body keeps the information on how to combat such pathogens when there is an actual infection.
Answer
The answer is C edge 2020
Explanation:
Which process involves a decrease in the dispersal of matter? Select the correct answer below: heat exchange between two solids
Answer:
The options are
A.heat exchange between two solids
B.the decomposition of a compound into its constituent elements
C.the precipitation of a solid
D.none of the above
The answer is
C.the precipitation of a solid
Dispersal of matter involves the process whereby there is more space occupied by the resulting element/compound than the initial one. For example the conversion of liquid to gas means that it has an increase in the dispersal of matter as the gas particles will contain more space when compared to a liquid.
Precipitation of a solid means conversion of a liquid to a solid. A liquid is known to contain more space which means there is a decrease in the dispersal of matter.
The process that involved the reduction in the dispersal of matter should be the precipitation of a solid
What is the dispersal of matter?It refers to the process in which it contains the additional space that should be occupied. Like the conversion of the liquid to gas represent there should be increment in the disperson of the matter since the particles of the gas comprise more space at the time when the comparison is to be done with the liquid. Here, precipitation of the solid represent the transformation of the liquid to the solid.
This question is incomplete. Please find the options below.
A.heat exchange between two solids
B.the decomposition of a compound into its constituent elements
C.the precipitation of a solid
D.none of the above
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Which conclusion can be drawn from the experimental observation that a single strand of DNA contains 2100 dA residues and 1800 dT residues?
a. There must have been some loss of material in the extraction because the number of dA and dT residues must be the same.
b. This is a palindromic sequence.
c. There must be 2100 dT and 1800 dA residues on the complementary strand.
d. This must be prokaryotic DNA
e. None of these
Answer:
c. There must be 2100 dT and 1800 dA residues on the complementary strand.
The force of a muscle contraction is higher when the muscle is stimulated every 0.5 secs than when stimulated with the same voltage every 0.05 seconds.
a. True
b. False
Answer:
b. False
Explanation:
Increasing the frequency of muscle stimulation causes wave summation to occur, which causes an overlap of muscle twitch. When this muscle summation happens, the force generated in the muscle increases. This means that stimulating the muscle every 0.5 seconds will generate less muscle contraction force than when stimulated every 0.05 seconds
_is a molecule that directs all of a cells activities
Answer:
[tex]\boxed{\mathrm{Nucleus}}[/tex]
Explanation:
The nucleus directs all cellular activities. The nucleus also contains genetic material of eukaryotic organisms.
Which is/are possible genotypes for a person with straight little finger and brown eyes?
a. bbrr
b. bbRR
c. BbRr
d. bbRr
Answer:
The correct answer is b. bbRR.
Explanation:
Brown eyes color is dominant over blue eyes color. So, we can assign the letter R to the dominant allele that expresses brown eyes and r to the recessive allele that expresses the blue eyes. The phenotype bent little finger is dominant over the phenotype straight little finger. We can assign the letter B to the dominant allele, and b to the recessive allele.a. bbrr : This genotype belongs to a person with blue eyes and straight little finger
b. bbRR : This genotype belongs to a person with brown eyes and straight little finger
c. BbRr : This genotype belongs to a person with brown eyes and bent little finger
d. bbRr: This genotype belongs to a person with brown eyes and straight little finger.
The maps below represent the same area of the Amazon rainforest over an 8-year period as humans moved into the rainforest. Forested areas are shown in deep green, and cleared areas are tan (bare ground) or light green (pasture land). Which of the following statements is best supported by evidence from the maps? A. This area became more densely populated with trees between 2000 and 2008. B. Humans living in this area began an extensive forest restoration program between 2000 and 2008. C. Humans began leaving this area to find jobs in nearby cities between 2000 and 2008. D. This area changed appearance between 2000 and 2008 because trees were cleared.
Answer:
D.)
Explanation:
am smart
Answer:
D. This area changed appearance between 2000 and 2008 because trees were cleared
Explanation:
I got it right on study island
A paleontologist finds a relatively complete skeleton but isn’t sure if it is an ape fossil or a hominid fossil. Which of the following features would NOT help distinguish between the two choices?
a. position of the opening in the skull for the spinal cord
b. design of the pelvis
c. relative length of the hind limbs
d. position of the eyes
Identify the organelle where photosynthesis takes place.
B
C
D
E
Answer:
E
Explanation:
If E is the Chloroplasts, where photosynthesis takes place, then the answer is E.
Answer:
E
Explanation:
Which element provides strength to the exoskeletons of clams and oysters?
sulfur
oxygen
hydrogen
phosphorus
Phosphorus provides strength to the exoskeletons of clams and oysters. Thus, the correct option is D.
The exoskeleton of organisms including clams and oysters is made up of primarily calcium in the form of calcium phosphate and calcium carbonate.
Calcium phosphate is also present in the form of hydroxyapatite which is Ca₁₀(PO₄)₆(OH)₂ which provides invariable strength to the exoskeletal structure.
Thus, as phosphorus is a part of the exoskeleton, the correct option is D.
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Which of the following describes the most likely impact that exposure to pollutants in the atmosphere would have on one’s personal health?
Answer:
It will lead to upper respiratory infections and pneumonia.
Explanation:
If a person had not drunk any water for 8 hours before collecting a sample, would you expect his/her urine to have a high or low specific gravity? Why?
Answer:
The person’s urine will have a high specific gravity
Explanation:
A high specific gravity is characterized by an increased concentration of solutes in the urine of am individual. A low specific gravity is characterized by a low or decreased concentration of the solutes.This is usually due to dehydration as a result of environmental conditions or tedious physical activities.
This explains why a person who had not drank any water for 8 hours and is dehydrated before collecting a sample is thought to have a urine with a high specific gravity
When a bacterium such as E. coli is shifted from a warmer growth temperature to a cooler growth temperature, it compensates by
Question is incomplete, The complete question is as follows:
When a bacterium such as E. coli is shifted from a warmer growth temperature to a cooler growth temperature, it compensates by:
A) increasing its metabolic rate to generate more heat.
B) putting longer-chain fatty acids into its membranes.
C) putting more unsaturated fatty acids into its membranes.
D) shifting from aerobic to anaerobic metabolism.
E) synthesizing thicker membranes to insulate the cell.
Answer:
C) putting more unsaturated fatty acids into its membranes.
Explanation:
Bacteria has the ability to change the composition of fatty acid present in its cell membrane to compensate the change in temperature.
When bacterium E.Coli will shift from hight or warmer temperature to low or cooler temperature, it will put more unsaturated fatty acids into its membranes which will mintain the fluidity in the membrane.
Hence, the correct option is "C".
Which of the following small GTPases are NOT involved in vesicle budding or docking? A. ARF B. Rab1 C. Ras D. Sar1p
Answer:
option c is correct that is Ras
Explanation:
When brown iodine is exposed to starch it turns dark purple. In an experiment, you placed a cornstarch solution in a small plastic bag. Next, you placed the bag in a beaker of water containing 10 drops of iodine. If the solution in the plastic bag turned dark purple (Select all that apply)
a) the plastic bag was permeable to cornstarch.
b) the plastic bag was permeable to iodine.
c) the iodine moved into the plastic bag.
d) the cornstarch moved into the beaker.
e) the plastic bag was selectively permeable.
Answer:
b) the plastic bag was permeable to iodine
the plastic bag was selectively permeable
the iodine moved into the plastic bag.
the plastic bag was permeable to cornstarch.
Explanation:
The experimental set up represented the concept of osmosis.That is the movement of water molecules from the region of higher water potential to region of lower water potential through a semipermeable membrane(a cell membrane which only allows water and certain molecules to pass through,but restrain other molecules through its pores.
Generally potassium iodine test is the standard test for starch.
Therefore, in the question,water moves iodine molecules as iodine solution(from high water potential) to move across the paper bag(semi permeable membrane) to the reach the corn solution.(low water potential,high solute potential).This turns the starch in the corn solution blue-black/purple.
If the solution in the plastic bag turned dark purple:
the plastic bag was permeable to iodine. That is option (B)the iodine moved into the plastic bag. That is option (C)the plastic bag was selectively permeable. That is option (E)To test for the presence of starch in a solution, iodine solution is used. This gives a blue-black coloration which occurred due to the formation of a starch-iodine complex.
From the above experiment, the plastic bag which contains the corn starch solution, separates the solution from water containing 10 drops of iodine.
The turning of the solution, inside the plastic bag, into blue black signifies the formation of starch-iodine complex between the cornstarch solution the iodine water.
The reaction was able to occur because the plastic bag, which is selectively permeable to iodine, allowed the movement of iodine from the beaker of water into it. This is called diffusion.
Therefore, if the solution in the plastic bag turned dark purple it means that the plastic bag which is semi permeable allowed the movement of iodine into it.
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Identfy the incorrect statement about active transport. a)It doesn't require the use of a cell's energy b)None of the choices. c)It moves substances across the cell membrane against their concentration gradients d)Sometimes active transport involves the use of carrier proteins to transport substances in much the same way as passive transport.
Answer:
can you please answer jahmarlon adu
Explanation:
please i will fail if you dont
The incorrect statement according to the question is “Active transport requires a cell's energy” option (a) is correct.
Active transport is a cellular process that moves substances against their concentration gradients, from areas of lower to higher concentration. This movement of solutes against the concentration gradient necessitates energy expenditure by the cell. Active transport often involves the use of carrier proteins or pumps embedded in the cell membrane, which undergo conformational changes to transport substances across the membrane.
This energy is primarily provided by ATP hydrolysis, a process that releases energy from ATP molecules. In contrast, passive transport processes, like diffusion and facilitated diffusion, do not require energy expenditure and move substances along their concentration gradients. Thus, active transport distinctly relies on the cell's energy to function, option (a) is correct.
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Which of the following statements is true of soluble fibers? a. They are not viscous. b. They retain their tough texture after being cooked. c. They impart gel-like characteristics to foods. d. They always resist fermentation. e. They are tough and stringy.
Answer:
The answer is "Option C".
Explanation:
The soluble fiber was fiber and in the diet which is prescribed to increase metabolism, reduce cardiovascular problems, cure constipation, and is ideal for patient diabetes.
This consumes food water and provides support with gel-like characteristics, which are rich in fiber in foods like rice, fruits, and bovines. They all are essential for fitness, digestion, and preventive medicine. It draws in liquid(water) while absorption and transforms into a gel. It slows it down the digestive cycle.Carbon first enters the food web in Multiple Choice humans. vertebrates. invertebrates. green plants. soil bacteria
Answer:
Green Plants
Explanation:
Carbon enters all food webs, both terrestrial and aquatic, through autotrophs, or self-feeders.
Physiology and anatomy problem-solving skills can be vital when you're the one taking a patient's history or doing the initial assessment. If you remember the functions of different organs and their anatomical relationships, you can come up with hypotheses and ask the relevant questions to test them. You will also know what to be alert for when caring for the patient later. A fair, fat, forty-three-year-old woman had been having episodes of griping abdominal pain after fatty meals. One day she ate French onion soup with lots of cheese and suffered severe enough pain that she called in sick. Her supervisor pointed out that she always gets sick after fatty foods. She went to the clinic and the nurse in triage took her vitals and history. The nurse noticed that the whites of her eyes were yellow and that she had tenderness on the right side of her abdomen. Blood pressure and heart rate were normal.
Based on this initial assessment, what organs do you think might be involved in this woman's illness, and why?
Choose the two most likely organs involved in her illness
a. Liver, because of the yellow coloration in her eyes, which indicates that the liver is not processing bilirubin.
b. Spleen, because of the pain on the right side of her abdomen.
c. Gall bladder, because it stores bile and might be related to the bilirubin buildup in her blood.
d. Stomach, because the pain occurs after eating
e. Heart, because her heart rate has not increased in response to pain.
f. Kidneys, because they should be cleaning the wastes out of her blood-her yellow eyes indicate that waste is building up in her blood.
g. Pancreas, because of the elevated blood glucose.
Answer:
The correct answer is: C. Gallbladder, because it stores bile and could be related to the accumulation of bilirubin in the blood.
Explanation:
The gallbladder is responsible for releasing bile juices that, together with gastrointestinal juices, degrade and metabolize fat molecules.
In people who have an unhealthy life, and gallbladder problems, these juices do not break down fat molecules and this is how these people suffer breakdowns, severe pain in the area of the middle third of the body, floating stools due to the high fat content .
The possible or most frequent problem of people who are like this 40-year-old woman is usually the accumulation of sialoliths in the bile duct.
The bile that is released by the gallbladder is necessary to drain properly into the intestines, if it cannot evacuate due to obliteration of the duct due to sialolithiasis or other reason, the gallbladder can become infected, generating a lot of pain and even possible sepsis.
Answer:
A and C
A: Liver, because of the yellow coloration in her eyes, which indicates that the liver is not processing bilirubin.
C: Gall bladder, because it stores bile and might be realted to tbe billrubin buildup in her blood.
Explanation:
The combination of trouble with fats and yellow discoloration should make you think about the hepatobiliary system. Now you have a hypothesis about what's wrong with this patient and can make a direct assessment toward supporting or disproving that hypothesis rather than asking a lot of questions that may not be relevant.
List three protozoan infections of the circulatory system that are transmitted by arthropods. Include the disease name, specific organism (genus species), vector that is the intermediate between hosts, and disease progress in humans.
Answer:
List three protozoan infections of the circulatory system that are transmitted by arthropods:
Malaria
Toxoplasmosis
Chagas disease (American trypanosomiasis)
Explanation:
Malaria is a prozotoan infection, that can be produced by several protozoan, in the genus Plasmodium. This Plasmodium infect red blood cells and the vector that trasmites it is the Anopheles mosquitoe. In this disease, red blood cells can have severe damage in different organs because of the hemolysis.
Toxoplasmosis is a disease caused by the protozoan Toxoplasma gondii. The main vector of them are domestic cats. When cats are infected, T. gondii oocysts is found in their feces and it can spread to humans. This disease is generally asymptomatic, except when the patient has AIDS or in pregnancy, which can be very dangerous and fatal.
Chagas disease, or American trypanosomiasis is caused by protozoan Trypanosoma cruzi and is generally transmitted to people thanks to the feces of triatomine bugs. Some of the acute symptoms include fever, vomiting, headache, and in severe cases people can develop a chronic disease. In the worst cases it can produce flaccid cardiomegaly (enlargement of the heart) leading to heart failure and death.
Which structures are highlighted? Which structures are highlighted? pulmonary arterioles alveoli bronchioles pulmonary capillaries
Hello. You forgot to put the image that complements this question. The image is attached below:
Answer:
pulmonary arterioles
Explanation:
Pulmonary arterioles are small blood vessels located in the lung. They appear as branches of the major arteries and have the main function of releasing blood from capillaries, in addition to regulating blood flow and peripheral blood pressure in capillaries.
It is important to note that arterioles are very small in size, which facilitates their functions to be performed efficiently and quickly.
HEEELLLPPP PLSS!!! Compare and contrast open, closed, and isolated systems. Be sure to discuss the exchange of energy and exchange of matter, and provide at least one example of each.
Answer:
See the answer below
Explanation:
An open system is a type of thermodynamic system in which energy and matter are being exchanged between the system and the surrounding. It is like boiling soup in an open pot. The opening allows for the addition of materials (matters) into the soup and energy is exchanged through the heating. A good example is found in biological organisms. They consume matters and exchange energy with the environment by carrying out work.
A closed system is a type of system in which there is no exchange of matter between it and the environment. However, there is an exchange of energy. It is like boiling water in a closed pot. Nothing can be added into the pot due to the closure but energy can be transferred through the heating of the pot.
An isolated system allows for neither energy nor matter exchange with the surrounding. It is like a closed food warmer that allows for nothing to enter or leaves it.
Answer: Open systems are energy that can be transferred between the system and its surroundings. Close systems are systems that do not transferred to its surroundings. Isolated systems is a thermodynamic system which cannot exchange either energy or matter from outside its boundaries of the system.
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Which enzyme is used in gluconeogenesis, but NOT in glycolysis? Group of answer choices PEP carboxykinase enolase (interconverts 2-phosphoglycerate and phosphoenolpyruvate)
Answer:
PEP carboxykinase
Explanation:
PEP carboxykinase is also known as Phosphoenolpyruvate carboxykinase. It is an enzyme which is used for the production of glucose from non-carbohydrate carbon substrates. This enzyme is used only in gluconeogenesis not in glycolysis because this enzyme helps in the production of glucose while glycolysis is a process in which the glucose break down into pyruvate and ATP molecules.
Choose only one correct option. Explanation needed.
Answer: D
only green plants
Answer:
[tex]\large \boxed{\mathrm{D. \ Photosynthesis}}[/tex]
Explanation:
Photosynthesis is a characteristic present in plants. Photosynthesis is a process where plants transform light energy into chemical energy. Reproduction, respiration, and excretion are all characteristics of living organisms.
