Adenine and guanine have a fused-ring skeletal structure derived of purine, hence they are called purine bases. ... Similarly, the simple-ring structure of cytosine, uracil, and thymine is derived of pyrimidine, so those three bases are called the pyrimidine bases.
give examples of terrestrial food chain.(one edaphic food chain and one aboreal food chain
Answer:
Nectar (flowers) - butterflies - small birds - foxes.
Dandelions - snail - frog - bird - fox.
Dead plants - centipede - robin - raccoon.
Decayed plants - worms - birds - eagles.
Fruits - tapir - jaguar.
Fruits - monkeys - monkey-eating eagle.
Grass - antelope - tiger - vulture.
Grass - cow - man - maggot.
Explanation:
Answer:
Grass-Grasshopper-Snake-Hawk
Explanation:
very simple one
Which process must occur for a muscle to be able to relax?
ОА
The amount of ATP in the neuromuscular junction must increase.
ОВ.
Myosin and actin must attach to each other.
OC. A nerve must initiate an action potential in the muscle fiber.
OD
The concentration of calcium in the myofibril must decrease.
Reset
Next
Answer:
the concentration of calcium in the myofibril should decrease
Explanation:
Which sport, which spread to the region from Europe, is the most popular in North Africa?
A football (soccer)
В. baseball
С. cricket
D basketball
Answer:
A.Football
Explanation:
Correct me if im wrong.
Answer:
cricket
Explanation:
cricket is the answer
Does gypsum occur naturally pls give an explanation
Answer:
its a naturally occurring mineral
Explanation:
Gypsum is made up of oxygen, sulfur, calcium and water. As evaporation occurs the sulfur is not protected by the water and oxygen contacts sulfur bonding with it to form a sulfate. The sulfate then bonds with calcium and water to create gypsum.
Why did Ibrahim conclude that the dorsal spines were not used to support a hump or to regulate body
temperature?
Chemical composition of dorsal spines provides information about its function as regulation of body temperature.
The dorsal spines were not used to support a hump or to regulate body temperature because of the chemical composition of the spines. Ibrahim found that the spines were made up of bones having few blood vessels and were likely wrapped tightly in skin which can't perform the function of thermoregulation in the body.
In order to regulate temperature of the body, more blood vessels are needed and we know that in dorsal spines the structure is bony and less number of blood vessels so we can conclude that chemical composition of dorsal spines provides information about its function as regulation of body temperature.
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Why is sustainable use of natural resources important?
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The use of resources should be sustainable because many non renewable resources like coal and petroleum can be exhausted if they are over exploited.
triggering of the muscle action potential occurs after
Triggering of the muscle action potential occurs after Ach binds to chemically gated channels in the motor end plate membrane. Acetylcholine (Ach) is a neurotransmitter produced by nerve cells.
An action potential is an electrical signal that travels along the cell membrane as a wave.
This action potential (muscle action potential) drives the contraction of muscle fibers.
When the action potential reaches the neuromuscular junction (i.e., the motor end-plate), acetylcholine (Ach) is released into the synaptic cleft.
Subsequently, Ach can bind and open specific channels localized on the surface of the muscle cells, thereby depolarizing them and triggering muscle contraction.
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Explain how potential energy is affected by:
A) Mass:
B) Height:
Answer:
A. Mass
Explanation:
The amount of gravitational potential energy an object has depends on its height and mass. The heavier the object and the higher it is above the ground, the more gravitational potential energy it holds. Gravitational potential energy increases as weight and height increases.
Answer:
A) Mass :
• Potential energy is directly proportional to mass, if mass increases, also potential energy increases and the reverse is true.
B) Height :
• Potential energy is directly proportional to height, if height increases, also potential energy increases and the reverse is true.
Explanation:
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what is the relationship between recombination frequency and the physical distance between genes on chromosomes?
Answer:
Recombination frequency (genetic distance) is determined by the frequency of the recombination events between the two genes in meiosis. The greater the physical distance between the two genes, the more likely are they to recombine during any given meiosis event.
Explanation:
so its a answer
in a further experiment , the researchers add a compound to the cell growth medium that both binds and releases protons and also passes through lipid membrane membranes. predict the effect of this added compound on ATP production by the cells
Answer: I would need more context my good sir please tell me the full context and I’ll be able to give you full answer :)
Explanation:
When methane (CH4) combines with oxygen (O2), carbon
dioxide (CO2) and water vapor (H20) are produced.
Which equation represents this chemical reaction?
O A. CO2 + CH4 + 2H20 + 202
OB. CO2 + 2H20 – 202 + CH4
OC. CH4 + 202 – CO2 + 2H20
OD. CH4 + 2H20 - 202 + CO2
Answer:
C. CH4 + 202 – CO2 + 2H20
Explanation:
CH4+O2-CO2+H20
The above equation represents combustion of methane to produce carbon-dioxide and water.
One carbon atom is present on the reactant side as well as on the product side. Four hydrogen atoms are present on the reactant side and two hydrogen atoms on product side. In order to balance this equation, we would multiply water molecule by two. Now there are four atoms of oxygen in the product side but only two on reactant side, so we will multiply oxygen molecule by two on the reactant side. Now the equation is balanced.
The balanced chemical equation is:
CH4+202-CO2+2H2O
This equation obeys the law of conservation of mass as the mass of the reactants is same as that of the products.
Answer:
C. CH4 + 202 – CO2 + 2H20
Explanation:
Which example(s) of cell transport do/does not require chemical energy?
A.
Drops of blue food coloring are placed in water and spread throughout the water, turning it blue.
B.
A potato slice is placed in water and water molecules from inside the potato move into the surrounding water.
C.
both A and B
D.
neither A nor B
Answer:
C
Explanation:
Because osmosis(B) this is where water moves from a high concentration to a low concentration across a partially permiable membrane( No energy required). Whereas in diffusion (a) this is the net movement of particles from a region of a high concentration to a region of a low concentration. This stops when the region is evenly spread. (No energy is required)
The cell transport which takes place in food coloring, potato slice is concentration gradient. This type of cell transport does not need energy. Thus, the correct option is C.
What is Cell transport?
Cell transport is the transport of molecules through the cell membrane. Transport of substances through the membrane takes place through osmosis and diffusion.
The diffusion of substances can be active or passive on the basis of requirement of energy. The passive mode of transport does not require energy as the movement of substances occurs down the concentration gradient from high concentration to low concentration. Whereas, in active transport energy is required in the form of ATP as the transport occurs against the concentration gradient from low concentration to high concentration.
Therefore, the correct option is C.
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Can someone please help me and not just for points
Answer:Proteins
Explanation: Stopid
bacterial transformations involve the transfer of what?
Answer:
DNA
Explanation:
Bacterial Transformation was discovered as a natural phenomenon 1928 by Griffith et al. Later in 1944 scientists actually identified the transforming principle as DNA. It is a process of horizontal gene transfer in bacteria. It involves transfer of DNA fragment to a live bacteria through intact cell boundary.
Answer:
DNA
Explanation:
transfer of DNA fragment to a live bacteria through intact cell boundary.
In some cases, people who test positive for genetic testing can receive preventive treatments. For example, people who test positive for the breast cancer genes BRCA1 and BRCA2 can have a preventive mastectomy (breast removal surgery) before they develop the disease. In other cases, no preventive treatments are available, but frequent monitoring can help detect a disease earlier, when it’s more easily treated.
What ethical or professional concerns does a health-care professional need to address when he or she has a patient who wants to prematurely treat a genetic disease? Do you think genetic testing should be part of normal preventive healthcare? Why or why not?
Answer:
yes
Explanation:
The obvious benefit of genetic testing is the chance to better understand of your risk for a certain disease. It can help ease uncertainty. Testing is not perfect, but it can often help you make decisions about your health.
Answer:
When it comes to treating genetic diseases, there are ethical and professional concerns that healthcare professionals need to address. For example, a patient who wants to undergo preventive treatment for a genetic disease may be putting themselves at risk unnecessarily, and a healthcare professional needs to weigh the potential benefits against the risks. Additionally, there may be financial and emotional costs associated with these treatments, and a healthcare professional needs to take these factors into account as well.
As for whether or not genetic testing should be part of normal preventive healthcare, there are arguments on both sides. On the one hand, genetic testing can help identify potential health risks before they become serious problems, allowing patients to take proactive steps to prevent or manage these issues. On the other hand, genetic testing can be expensive and may cause undue stress or anxiety for patients who receive unexpected results. Ultimately, the decision to include genetic testing in preventive healthcare should be made on a case-by-case basis, taking into account the individual patient's needs and circumstances.
Explanation:
In the field of healthcare, it is vital to acknowledge the ethical and professional dilemmas that arise when patients request early intervention for a genetic ailment. While preventive treatments can be effective in certain scenarios, healthcare providers must weigh the potential benefits against the risks and side effects of the treatment. Moreover, healthcare practitioners must consider the psychological impact of a positive genetic test result on their patients.
The question of whether genetic testing should be included in routine preventive healthcare is multifaceted. On one hand, genetic testing can provide valuable insight into a patient's susceptibility to certain diseases, thereby facilitating early detection and intervention. However, genetic testing can also pose ethical concerns regarding privacy and possible discrimination based on genetic data.
In the end, the decision to pursue genetic testing as a means of preventive healthcare should be determined on a case-by-case basis, with careful consideration of the potential risks and benefits, as well as the individual values and beliefs of the patient.
Select all the correct answers.
Which two body systems interact to expel the waste product carbon dioxide?
1) urinary system
2) nervous system
3) excretory system
4) circulatory system
Answer:
circulatory system is the answer
Circulatory system and Excretory system
A bat is a mammal even though it flies in air. Why?
Answer
Bats are true mammals in that they give birth to live young, produce milk to feed their young, have hair, and they are warm-blooded (they can self-regulate their body temperature). ... Bats use their wings to fly, and they often use them to catch their prey, mostly flying insects.
Answer:
Flying Mammals
Explanation:
Bats are true mammals in that they give birth to live young, produce milk to feed their young, have hair, and they are warm-blooded (they can self-regulate their body temperature). Bats are unique among mammals in that they can fly. Even though they can fly, they have mammal characteristics.
which is a part of the
The aurora borealis is caused by the
thermosphere.
help me papis
Answer:
The answer to this question is IONOSPHERE
Explanation:
hope it helps ..
have a great day
Why is it important to form a hypothesis at the beginning of an experiment?
What is a scientific theory?
What is a scientific law?
Answer:
cvcccca
Explanation:
ajh
PLEASE HELP!! 100 POINTS!
Which of the following is the best example of a way human lifestyles affect environmental systems?
Using radioactive materials causes ground pollution as it causes methane to seep into the ground.
Burning fossil fuels causes water pollution by increasing the amount of water vapor in the atmosphere.
Deforestation causes acid rain by decreasing carbon dioxide (CO2) in the atmosphere.
Using aerosols that contain chlorofluorocarbons (CFCs) decreases the amount of protective ozone (O3).
Answer:
Burning fossil fuels causes water pollution by increasing the amount of water vapor in the atmosphere.
Explanation:
This is the best example because when burning fossil fuels, greenhouse gases are released, which can cause global warming. This affects the environment.
-kiniwih426
Why might (mostly) boneless creatures, like jellyfish, sea slugs, squid, and octopuses, fare especially well underwater? What is it about the physics of being underwater that would allow relatively large, sometimes highly mobile creatures to flourish that isn’t true for boneless land creatures?
Answer:
hmm well id say because it helps them move better underwater than on land because they swim diffrently than humans
Explanation:
which two pancreatic hormones closely control levels of glucose in the blood
Answer:insulin and glucagon
Explanation:these are hormones produced by the pancreas
mrna is synthesized in translation or transcription
Answer:
transcription
Explanation:
mRNA is synthesized in the nucleus using the nucleotide sequence of DNA as a template. The process of making mRNA from DNA is called transcription.
identify the region of the sphenoid bone in contact with the pituitary gland.
Answer:
The sella turcica is a depression in the central region of the sphenoid bone. It houses the pituitary gland.
which term refers to distention of the renal calyces and pelvis?
Answer:
Hydronephrosis refers to distention of the renal calyces and pelvis of one or both kidneys by urine. Hydronephrosis is not a disease but a physical result of urinary blockage that may occur at the level of the kidney, ureters, bladder, or urethra.
Explanation:
biology definitions i wrote down
Please help
I don't know which one is the answer :(
Answer:
I believe that your answer is C.
Explanation:
Keep in mind that Steve is working with crops (wheat specifically) and Devan has helped him repair his machinery so that Steve can harvest the wheat properly.
how does the plasma membrane contribute to the structure and function of the cell?
Answer:
The plasma membrane, also called the cell membrane, is the membrane found in all cells that separates the interior of the cell from the outside environment. ... The plasma membrane consists of a lipid bilayer that is semipermeable. The plasma membrane regulates the transport of materials entering and exiting the cell.
A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it moves hazardous materials out of the cell and carries nutrients into the cell.
What is a cell membrane?All cells' interiors are protected from the outside world by a biological membrane called the cell membrane. A cell is protected by its cell membrane, also known as the plasma membrane. Additionally, it maintains a constant environment inside the cell, and that membrane serves a variety of purposes. One is to move substances out of the cell that are toxic as well as nutrients into the cell.
Glycerophospholipids, molecules made of glycerol, a phosphate group, and two fatty acid chains, are what make up cellular membranes, including plasma membranes and internal membranes.
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After the enzyme releases a molecule of carbonic acid, what MOST LIKELY will occur next?
Answer:
After the enzyme releases a molecule of carbonic acid what most likely will occur next? the Enzyme will repeat its function of binding reactants and releasing carbonic acid. Carbonic anhydrase is found in the bloodstream of the human body
Name the following
he valve presents at the mouth of the pulmonary artery
Explanation:
The pulmonary valve (sometimes referred to as the pulmonic valve) is a valve of the heart that lies between the right ventricle and the pulmonary artery and has three cusps. It is one of the four valves of the heart and one of the two semilunar valves, the other being the aortic valve. Similar to the aortic valve, the pulmonary valve opens in ventricular systole, when the pressure in the right ventricle rises above the pressure in the pulmonary artery. At the end of ventricular systole, when the pressure in the right ventricle falls rapidly, the pressure in the pulmonary artery will close the pulmonary valve.
I’ll give brainliest, thanks, 5 stars to the answer that has been explained properly.
The cell membrane is like the ... or a cruise ship
The Golgi body is like the ... of a cruise ship.
The ribosomes are like the ... of a cruise ship.
The lysosomes are like the ... of a cruise ship.
Answer:
The cell membrane is like the screen door
The cell membrane is like the screen door The Golgi body is like the set of a flattened sac or a mailman
The cell membrane is like the screen door The Golgi body is like the set of a flattened sac or a mailman The ribosome are like the flattened and spherical in shape or house
The cell membrane is like the screen door The Golgi body is like the set of a flattened sac or a mailman The ribosome are like the flattened and spherical in shape or house The lysosome are like the teacher of a school
