Wind moving in two directions over a prairie makes air in the middle spin. This is the beginning of a
The ability of a postsynaptic cell to respond to a neurotransmitter depends on:
What is dna? how do scientists isolate dna in order to study it? how does dna differ from person to person? how can tools of molecular biology be used to compare the dna of two individuals? what are restriction enzymes? what are restriction fragment length polymorphisms? what is gel electrophoresis and how can the results of this technique be interpreted?
DNA is a molecule that carries genetic information and can be isolated by breaking open cells. DNA differs between individuals, and molecular biology tools can be used to compare DNA. Restriction enzymes and gel electrophoresis are used to study DNA fragments.
Explanation:DNA, or deoxyribonucleic acid, is a molecule that carries genetic information in all living organisms. It is composed of nucleotides and has a double helix structure. Scientists isolate DNA by breaking open cells and enzymatically destroying other macromolecules. They use methods like gel electrophoresis to separate and visualize DNA fragments. DNA differs from person to person due to variations in the sequence of nucleotides. Tools of molecular biology, such as PCR and DNA sequencing, can be used to compare the DNA of two individuals.
Restriction enzymes are enzymes that cleave DNA at specific recognition sites. They are used in molecular biology to cut DNA into fragments. Restriction fragment length polymorphisms (RFLPs) are variations between individuals in the length of DNA fragments generated by restriction enzymes. Gel electrophoresis is a technique used to separate DNA fragments based on their size and charge. In gel electrophoresis, DNA fragments are loaded onto an agarose gel and subjected to an electric current. The smaller fragments move faster and travel farther, while the larger fragments move slower and stay closer to the top. The results of gel electrophoresis can be interpreted by visualizing the bands produced and determining the sizes of the DNA fragments.
Genes are positioned on thread like bodies found in the nucleus of a cell. they are called
Ll organisms are made of one or more cells, which are the fundamental units of life.
a. True
b. False
Describe the stages of photosynthesis. Use the terms thylakoid, light-dependent reactions and light-independent reactions.
Photosynthesis in plants occurs in two stages. These stages are known as the light-dependent reactions and the Calvin Cycle.
The first stage of photosynthesis is the light dependent reactions. These reactions take place on the thylakoid membrane inside the chloroplast. During this stage light energy is converted to ATP (chemical energy) and NADPH (reducing power).
The second stage of photosynthesis is the Calvin Cycle. These reactions occur in the stroma of the chloroplast. Energy from ATP and electrons from NADPH are used to convert carbon dioxide into glucose and other products.
Photosynthesis comprises of two stages: the light-dependent reactions, which occur in the thylakoid membrane and convert light energy into chemical energy, ATP and NADPH, and the light-independent reactions, or Calvin Cycle, which happen in the stroma and utilise the ATP and NADPH to convert carbon dioxide into sugars.
Explanation:Photosynthesis consists of two stages: the light-dependent reactions and the light-independent reactions, or Calvin cycle. Initially, the light-dependent reactions occur in the thylakoid membrane where light energy is captured by pigments (like chlorophyll) and converted into chemical energy, ATP and NADPH. These reactions also involve the splitting of water molecules and the releasing of oxygen. The energy-carrying molecules ATP and NADPH are then passed on to the second stage of the process.
The light-independent reactions, otherwise known as the Calvin cycle, take place in the chloroplast stroma. Here, ATP and NADPH are used to transform carbon dioxide into sugar (carbohydrates) through a series of complex enzymatic reactions. Although they were named light-independent reactions because they do not use light energy directly, they rely on the ATP and NADPH produced by the light-dependent reactions.
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Sexual reproduction is important for the survival of the species. It is important for ALL BUT ONE of these reasons. That is
Answer:
it is necessary for the survival of the individual.
Explanation:
Sexual reproduction is important to the survival of any species for all the reasons except it is necessary for the survival of the individual. Genetic variability is extremely important to the overall survival of a species, not an individual. It leads to organisms more "fit" to survive in their given environment.
Which type of vertebrae are characterized by the presence of transverse foramina?
When you go outside, it is common to hear a variety of bird songs. these songs vary among bird species as well as bird flocks. interestingly, some bird species that are highly unrelated have very similar song qualities. what can you conclude from this phenomenon?
Both osmosis and diffusion require energy and are considered active transport
True or False?!
Explanation:
Diffusion can be defined as the movement of the particles from a higher amount to the lower amount. it is usually used for gaseous particles.
Osmosis can be defined as the movement of the solvent particles from an area where its amount is high or more to an area where its amount is low or less through the semi permeable membrane.
These two processes does not requires energy and is not an active process.
The earliest humanlike creatures that lived in africa three to four million years ago were
Marcus is admitted to the hospital for a bone marrow stem cell transplant from his brother. What will happen after his brother’s stem cells are transplanted into Marcus?
The answer is B The stem cells are divided through mitosis to create diploid stem cells.
I hope this helps
Answer:
Explanation: I took the test
Trees use narrow tubes to transport water upward. Which property of water allows the water to rise in these narrow tubes?
High Vapor Pressure
Cohesion Molecules
High Boiling Point
Net Charge of Molecules
Was B: Cohesion Molecules correct?
Which pathway will run if there is a high level of adp?
a. glycolysis
b. gluconeogenesis
c. glyconeogenesis
d. adp kinophosphorylase cycle?
Racial segregation and exclusion are most likely to be eliminated in sports when
BIOLOGY HELP PLEASE
Water is the most abundant molecule found in living organisms. Most mammals, in fact, are approximately 70% water by weight. About two-thirds of this water is present inside cells. The other one-third is present outside cells (e.g., in blood plasma or other body fluids). Why is water so important to cells?
Question 18 options:
Water is stored in cells to be used when the organism gets thirsty.
Almost all chemical reactions in life process occur in solutions with water.
The main structural component found in plasma membranes and cell walls is water.
Order the taxa from largest (first) to smallest (fifth). 1. first domain 2. second order 3. third kingdom 4. fourth class 5. fifth phyla/division
This element is found in all living things. It is recycled when organisms die. It is transformed from one form to another through photosynthesis and cellular respiration. The element is
Answer:
carbon
Explanation:
What factor does the nurse expect to influence the development of teeth in neonates?
The factors that the nurse expects in the influence of development of teeth in the neonates are the following;
- Medication and illness of neonate
- Fluoride level that is present in the supply water
- The medication or illness that the mother has
Some antimicrobial chemicals are considered to be disinfectants and antiseptics. some antimicrobial chemicals are considered to be disinfectants and antiseptics.
a. True
b. False
The statement is true. Disinfectants and antiseptics are both types of antimicrobial chemicals. Disinfectants are used for inanimate objects while antiseptics are for living tissues.
Explanation:This statement is indeed true. Both disinfectants and antiseptics are antimicrobial chemicals. Disinfectants are substances that are applied to non-living objects to destroy microorganisms. For example, you might use a disinfectant to clean a bathroom. On the other hand, antiseptics are applied to living tissues to reduce the possibility of infection, sepsis, or putrefaction. For instance, a doctor may use an antiseptic on your skin before making an incision.
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How is breathing related to cell respiration? (Hint: Think about both the reactants and the products of cellular respiration)
Answer:
We breathe oxygen that is captured through cellular respiration.
Explanation:
Cellular respiration is the chemical process carried out by living beings and takes place inside cells. It is necessary to maintain the functioning of our body. For cellular respiration to happen efficiently, in addition to the absorption of oxygen (which is essential for our breathing), the body's nutritional needs must be met. That is, living beings need to ingest carbohydrates, lipids and proteins. However, as these molecules are large, the organism needs to break them down so that they can be used as an energy source. After ingestion, simple carbohydrates, such as glucose, fatty acids and amino acids, remain. Cellular respiration takes place at this stage.
Most used by living beings, aerobic respiration uses glucose as its main source of energy. Its function is to start from the molecules, obtained by the producing organisms, in the process of photosynthesis and by consumers' food. Aerobic respiration is represented by the following equation: C6H12O6 + 6 O2 - 6 CO2 + 6 H2O + Energy
In this equation, it is possible to identify that the glucose molecule (C6H12O6) is divided, so that it can originate the simplest substances (CO2 and H2O). This mechanism occurs within the mitochondria, a cytoplasmic organelle that acts as a power plant. With this, several reactions with the participation of enzymes and coezimas are carried out within the aerobic respiration, which favors the constant oxidation of glucose. In this way, this way of obtaining energy generates thirty-six moles of ATP from one mole of glucose. Aerobic respiration is divided into three stages: glycolysis, the Krebs cycle and oxidative phosphorylation (respiratory chain).
Breathing is related to cell respiration as oxygen is used in cellular respiration and carbon dioxide is exhaled during breathing.
Breathing is related to cell respiration in several ways. In cellular respiration, oxygen is used as a reactant to break down glucose and produce ATP, which is the energy currency of cells.
Carbon dioxide is a waste product of this process and is exhaled during breathing.
The respiratory system, which includes the lungs, muscles, and passageways, helps to transport oxygen from the air into the body and remove carbon dioxide.
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The loss of the ability of the larynx to produce normal speech sounds is called:
please help, i dont understand this?
3 ways in which the female pelvis is different from male
Certain species of insects introduced accidentally in a forest are destroying all the Douglas fir trees in that forest. The wood of these trees is extensively used for construction. In order to control the damage caused by these insects, the forestry department decided to introduce the moth caterpillar in the forest. These caterpillars are natural predators of the insects. Which method did the forestry department implement to control the invasive species?
The forestry department implemented a(n) _______ control method.
Answer: Biological control method
A biological control method is used to control the growth of unwanted and undesired species of plant and animals in a natural habitat. This includes the induced growth of plants, animals and insects which help to irradicate the growth of undesired plants, animals and insects. Therefore, introduction of invasive species of caterpillar moth will limit the population of insects causing harm to forest woods.
Answer:
biological
control method.
Explanation:
Rice is a procedure for treating minor strains and sprains. what does it stand for?
"The acronym RICE stands for Rest, Ice, Compression, and Elevation. It is a common treatment for minor strains and sprains.
To elaborate on the RICE method:
- Rest: The first step is to rest the injured area to prevent further damage and to allow the body to begin the healing process.
- Ice: Applying ice to the injured area helps reduce swelling and pain. Ice should be applied for 20 minutes every 2 to 3 hours during the first 48 hours after the injury.
- Compression: Wrapping the injured area with an elastic bandage can help minimize swelling and provide support. However, the bandage should not be too tight as to cut off circulation.
- Elevation: Elevating the injured area above the level of the heart also helps reduce swelling by decreasing blood flow to the area.
The RICE method is most effective when it is started soon after the injury occurs and continued for at least 48 hours. It is important to note that while RICE can be very effective for minor injuries, more serious strains and sprains may require medical attention."
Samuel always receives a painful shock when he turns on the lamp in his study. after a while, samuel refuses to touch the switch on the lamp. the lamp switch was a(n) ________ stimulus that elicited a(n) ________ response after a period of time.
What is another name for carbohydrates? a atp b fats c glucose (sugar)?
The molecule arrangement of ice, water and steam are very different. _______ has the most ordered arrangement, ______ has the next most orderly arrangement, and ___________ has the least orderly arrangement of molecules.
Answer:
A) ice, water, steam
Explanation:
I did the usatestprep
what does a cytoskeleton do?