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.
The chemistry of aquatic ecosystem is determined by the amount of what?
Answer:
by amount of salts, nutrients, and oxygen dissolved in the water.
Explanation:
What do you predict would happen if the yeast had a mutation that prevented the g protein from binding gtp? what do you predict would happen if the yeast had a mutation that prevented the g protein from binding gtp? no shmoo would form in response to mating factor. phosphorylated fus3 kinase would accumulate in the cell in the presence of mating factor. shmoos would form even in the absence of mating factor. mating factor would be unable to bind to the g protein-coupled receptor?
The part of an enzyme molecule where a substrate molecule attaches
What is another name for a tropical savanna?
The client with rapid-cycling bipolar disorder who is about to receive his 1700 hours dose of carbamazepine tells the nurse he has a sore throat and chills. what should the nurse do next
Should mild traumatic brain injury patients be tested for cognitive deficits in the emergency department?
By locating active __________, geologists determine the likelihood of earthquakes in a region.
Describe the body cavities and what organs are found in each
The body cavities that make up our body are:
Thoracic cavity. In the thoracic cavity you have your lungs and your heart and diaphragm.
Cranial cavity. Holds your brain
Abdominal cavity. This cavity holds your kidneys, stomach, pancreas, gallbladder, appendix, spleen and liver
Abdominopelvic cavity. This holds your bladder, reproductive organs
Spinal cavity. This holds your spine and all the nerves associated within.
The whole body is divided into two cavities where are the dorsal and the ventral cavities.
The dorsal (back) cavity holds the cranial and vertebral cavities.
The ventral cavity holds the abdominal cavity, thoracic and adominopelvic cavity.
The body cavities in vertebrate animals are the dorsal and ventral cavities. The dorsal cavity contains the cranial and spinal cavities, while the ventral cavity contains the thoracic and abdominopelvic cavities. These cavities house various organs in the body.
Explanation:The body cavities in vertebrate animals are the dorsal and ventral cavities. The dorsal cavity contains the cranial and spinal cavities, which house the brain and spinal cord, respectively. The ventral cavity contains the thoracic cavity, which surrounds the lungs and heart, and the abdominopelvic cavity, which houses the abdominal and pelvic organs.
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Where can earthquakes occur?
A) at a divergent plate boundary
B) at ALL plate boundaries
C) at a convergent plate boundary
Answer:
The answer is B) at ALL plate boundaries
Explanation:
An earthquake is a phenomenon of sudden and temporary shaking of the earth's crust produced by the release of accumulated energy in the form of seismic waves. The most common are caused by the activity of geological faults, although they can also occur due to other causes such as, for example, friction on the edge of tectonic plates.
Process by which a neurotransmitter is reabsorbed by the terminal button of the presynaptic neuron is termed:
The actual patterns of dna variation in humans show that african populations contain:
in which part of the sea horse's cells is ATP produced?
How do mountain ranges affect precipitation? Give an example.
What is an example of a changing biotic factor?
A changing biotic factor is an element in an ecosystem involving living organisms whose impact can change over time, such as migration patterns. These changes are driven by factors like climate change and availability of resources. The resulting implications can disrupt food chains and ecological interactions within biomes.
What is an example of a changing biotic factor?
A changing biotic factor is an element in an ecosystem that involves living organisms whose presence and impact can change over time. A prominent example is the migration patterns of certain animal species. Migration driven by seasonal changes, climate change, or availability of food can significantly alter the ecosystem's composition and functioning.
What factors are driving these changes?
Several factors drive changes in biotic factors, including climate change, availability of food resources, and human activities. For instance, warming temperatures due to climate change can alter the migratory paths of birds.
What are the implications of these changes on the plants and animals in the biomes?
The implications of changing biotic factors on plants and animals in biomes can be profound. For example, the arrival or departure of certain migratory species can disrupt food chains and ecological interactions. An increase in predator populations might lead to a decline in prey species, which in turn could affect plant populations that the prey species feed on.
Complete Question:
What is an example of a changing biotic factor?
A factor that promotes maximum production of atp in cellular metabolism is the presence of
How has the Gila Monster adapted to the breeding patterns of its prey the Gambel quail and desert cottontail rabbits?
As the Gila monster consumes the eggs or young of the desert cottontail and Gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. However, for this, the Gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.
First, is that they possess huge bodies, and can consume greater concentrations of food during a small period. Secondly, they require to feed infrequently as they can accumulate fat in their tails. Ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.
The Gila monster has adapted to the breeding patterns of its prey, the Gambel quail and desert cottontail rabbits, by using its fat tail as a storage depot for water.
Explanation:The Gila monster has adapted to the breeding patterns of its prey, the Gambel quail and desert cottontail rabbits, by using its fat tail as a storage depot for water. The dry climate where the Gila monster lives can make water scarce, so having a fat tail allows it to store water for long periods of time. This adaptation helps the Gila monster survive in its environment and ensure it has access to water even when its prey may not be abundant.
He distribution of water on earth. where is most of the fresh water located?
The presence of two deltas in a fingerprint indicate?
The presence of two deltas is indicative of an **ulnar loop** pattern.
Fingerprint patterns are typically categorized into several types, including arches, loops, and whorls. Ulnar loops, characterized by having two deltas and looping toward the little finger (ulnar side of the hand), are a common fingerprint pattern. These patterns, along with other ridge characteristics, help in the classification and identification of fingerprints, which can be a valuable tool in forensic investigations and biometric applications.
The presence of two deltas in a fingerprint is a feature often used in fngerprint analysis to classify and categorize fingerprint patterns. When examining fingerpriingnts, forensic experts and fingerprint analysts use various ridge patterns to differentiate and classify prints.
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Air moves into the lungs when the air pressure in the lungs is than the air pressure outside of the lungs this occurs when the muslces of the diaphragm
Vitamin c assists in the formation of the most abundant body protein, which is __________.
While walking home on a dark night, Joanna saw a bright light in the sky and concluded that it must have been a spaceship from another planet. Which of these questions could Joanna answer using scientific methods of investigation?
A) Can aliens read our minds?
B) Does Joanna actually believe in aliens?
C) What is the aliens spacecraft made from?
D) What percent of people in the area saw a bright light that night?
Which kind of transport do white blood cells use when they engulf and destroy bacteria?
If you feel feverish, why can't you take your own temperature with your hand?
You cannot take your own temperature with your hand when feverish because your hand will be as hot as your body.
When your feel feverish you will most likely run a high temperature and your hand been part of your body will also experience a high temperature. when you use your hand you wouldn't feel the difference in temperature.
The best tool to use when taking your own temperature is a thermometer because it is used to measure the degree of hotness or coldness of a body.
Hence we can conclude that you cannot take your own temperature with your hand when feverish because your hand will be as hot as your body.
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Diane, who is breast-feeding her infant daughter, had measles as a child. her daughter will be protected from the disease because of the _____ in diane's breast milk.
The concentration of atmospheric carbon dioxide is currently decreasing due to human activities. Please select the best answer from the choices provided T F
If a cell synthesizes large quantities of protein molecules, which organelles might be numerous in that cell?
Answer:
The correct answer will be- ribosomes
Explanation:
The organelle associated with the synthesis of the protein molecule is known as the ribosomes which provide the site for the process of translation.
The organelle is composed of rRNA and the lipoproteins arranged in the two subunits: the larger subunit and the smaller subunit.
Both the subunit contains the complexes which translate the codings of the mRNA and translate them to amino acid through tRNA and form peptides.
Thus, ribosome is the correct answer.
The ______ _______ surrounds the nucleus and separates it from the cytoplasm.
The nuclear envelope surrounds the nucleus, separating it from the cytoplasm, and regulates the transport of molecules.
Explanation:The nuclear envelope surrounds the nucleus and separates it from the cytoplasm. The nuclear envelope, or nuclear membrane, is a double-layered structure that provides the nucleus - the cell's control center - with a barrier from the rest of the cell. This helps protect the DNA inside the nucleus and regulates the transport of molecules in and out of the nucleus through nuclear pores.
The primary role of the nuclear envelope is to compartmentalize the nucleus, creating a distinct environment for the genetic material (DNA) inside. This separation is crucial because it protects the DNA from potential damage that could result from various cellular processes occurring in the cytoplasm.
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Facilitated diffusion is an example of _____.
passive transport
concentration gradient
active transport
osmosis
The answer in the space provided is passive transport. A passive transport occurs when there is a presence of ions or other substance moving through the cell without having any effort or means of having to use energy when passing or moving.
Facilitated diffusion is an example of passive transport. It's a type of passive transport that involves the movement of molecules across a cell's membrane using transport proteins, without the need for energy. It is different from active transport and osmosis.
Explanation:Facilitated diffusion is an example of passive transport. In Biology, passive transport is a process by which anions, ions, or molecules move along a concentration gradient, which is a difference in concentration across a space or a membrane, from an area of higher to lower concentration. No energy is needed in this process.
Meanwhile, facilitated diffusion is a type of passive transport that uses transport proteins to move other ions and small molecules across the plasma membrane. These proteins change shape as the molecules or ions are carried across the membrane, without any energy requirement. Active transport, on the contrary, requires energy to move particles against a concentration gradient, while osmosis specifically refers to the movement of water.
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The author indicates that caloric reduction extends the life of a mammalian cell by
In a dna double helix an adenine of one strand always pairs with a(n) _____ of the complementary strand, and a guanine of one strand always pairs with a(n) _____ of the complementary strand. in a dna double helix an adenine of one strand always pairs with a(n) _____ of the complementary strand, and a guanine of one strand always pairs with a(n) _____ of the complementary strand. uracil ... cytosine cytosine ... thymine guanine ... adenine thymine ... cytosine cytosine ... uracil