Answer:
Incorporating radioactive nucleotide must be done to ensure DNA made is a laboratory is radioactive
Explanation:
Radioactive nucleotide are generally used in the detection of some specific nucleic acid series. These are the typically incorporated inside the DNA and RNA series for detection as well as analysis. These nucleotide involves radioactive phosphates, digoxygenin, biotin, fluorophores and enzymes. It was first used in 1935 by George de Hevesy. P32 and S35 labelled as the nucleic probes and now the phosphates is being in large use. Hydrogen can also be used in-situ hybridisation which gives greater resolution and less sensitive in long exposure.
Incorporating radioactive nucleotides
Which statement about water is correct? and why?
a) Water molecules are polar, therefore fatty acids do not dissolve.
b) ice has a higher density than liquid water, therefore some organisms can live under the ice.
Answer:
A
Explanation:
ice's density is lower that water's density
bacteria have many roles on earth
select all correct responses
Help make some types of food for humans
Pathogens
Mutualist like the large intestine of humans making vitamin K
Fix atmospheric nitrogen and soil for use in plants
Winning dancing with the stars
Answer: All options except Winning dancing with the stars.
Explanation: Bacteria performs many roles on this planet.
Some bacteria makes food for ourselves such as yogurt and bakery products. Some bacteria live in our in body and make some useful vitamins for our body and help in digestion. There are many bacteria that lives in the root of some higher trees and fix atmospheric nitrogen for the plant. Some species of bacteria causes various diseases in human, animals and plants.
The diagram below shows three parts labeled A, B, and C, of Earth's orbit around the sun.
Which of these statements is correct about Earth in the three parts of the orbit?
a. It travels faster in part A than in part B.
b. It travels faster in part C than in part B.
c. It travels slower in part A than in part C.
d. It travels slower in part A than in part B.
Answer:
Option A.
Explanation:
It travels faster in part A than in B, because the distance between the earth and the sun in part A is shorter.
How many electrons does a neutral atom with four protons contain?
If a disturbance were to occur in an ecosystem, which of the following ecosystems would be most vulnerable to extinctions? continental ecosystems island ecosystems marine ecosystems tropical ecosystems
Answer:
The answer is D: tropical ecosystems
Explanation:
Its is tropical ecosystem because they are the most fragile, and intricate systems
Answer:
marine ecosystems and tropical ecosystems
Explanation:
For example, Caribbean coral reefs, whose natural barrier is at serious risk of disappearance, such as tourist exploitation, overfishing, etc. The Aral Sea is another example of a collapsed and unrecoverable sea.
Climate change will affect many species and habitats and will have a consequence on fishing. Displacements of marine species due to warming of the waters can cause invasions high rates of local extinction in the tropics and seas. Molluscs, echinoderms and corals that form reefs, are very sensitive to crustaceans and fish, which can have harmful consequences for fishing.
100 POINTS TO ANYONE WHO ANSWER THIS
hat is a job of the muscular system?
remove waste
protect the body from germs
deliver nutrients to the body
provide movement
Answer:
provide movement
Explanation:
In conjugation, what structure serves as a bridge between two bacterial cells?
Answer:
Pilus
Explanation:
Conjugation can be described as one of the processes by which a bacteria transfers it's DNA into another bacteria. In this method of DNA transfer, the donor bacterium cell forms a pilus and joins with the recipient bacterial cell. This allows the DNA from the donor cell to get transferred into the recipient cell. Mostly, the DNA is a plasmid which is transferred. The pilus is formed by the F factor of the donor DNA.
Describe how humans’ way of life has changed. Begin with hunter-gatherers and end with life after the Industrial Revolution.
Answer:
Ever since the existence of life of humans on Earth, the humans have been making progress to understand themselves and the mother nature.
In the start, the humans were hunter- gatherers. Hunter- gatherers can be described as humans which use wild life plants and animals for food. The humans used to live in jungles and eat the wild- life plants and animals. They used leaves from the trees to cover their bodies. Heat was produced by rubbing the rocks.
After this time, the humans learned the techniques of cultivating plants for food. They started cultivating crops and depend on them for living. During this time, humans learned the art of farming and agriculture. But they couldn't understand the effects of various pathogens infecting the crops and humans at that time.
After this time, humans learned the art of preserving foods in different forms like pickles etc. They also learned that certain types of plants could be used to treat wounds and other diseases.
With the passage of time, people learned to make and use machinery for making their tasks easier. The usage of machinery progressed rapidly and the industrial revolution began. People became more diverted to this sector rather than farming. They started to move towards the cities to find better jobs in industries.
Life after industrial revolution was much easier as humans had made a lot of equipments which aid them to have a better life style. Science has been developing since that time day by day.
Explanation:
What determines whether an allele is dominant or recessive
Answer:
A dominant allele in the genotype is always expressed in the phenotype. For example, if brown eye color is dominant in a species, an animal that inherits even a single brown allele will always have brown eyes. If it's recessive, he'll only have brown eyes if he inherits a brown allele from each parent.
Explanation:
List four factors that can cause slope or land movements
Answer:
rainfall, changes in water level, earthquakes
Which product can you NOT recycle? A. newspaper B. pressure-treated wood C. aluminum soda can D. plastic milk jug
Answer:
Pressure treated wood
Explanation:
Answer
b wood
Explanati
Which describes an oxidation reaction that occurs during cellular respiration?
Answer:
Glucose loses electrons and hydrogen to form carbon dioxide.
Explanation:
During aerobic respiration, oxygen is reduced, donating an electron to hydrogen to form water. The entire process of cellular respiration oxidizes glucose. The oxygen taken in by a cell combines with glucose to produce energy in the form of Adenosine triphosphate (ATP), and the cell releases carbon dioxide and water. This is an oxidation reaction in which glucose is oxidized and oxygen is reduced.
Identifying Forms of Energy
Match each form of energy with its description.
thermal energy
a piece of fruit hanging from a tree
electrical energy
lightning produced during a storm
kinetic energy
OOUUU
radio waves transmitted from a tower
gravitational potential energy
sand on the beach feels warm
to the touch
a box moving along a conveyor belt
radiant energy
Answer:
gravitational potential energy-a piece of fruit hanging from a tree
radiant energy-radio waves transmitted from a tower
Thermal energy-sand from the beach feels warm to the touch
Kinetic energy-a box moving along at a conveyor belt
electrical energy- lightning produced by a storm
Explanation:
Hope this helps!
the answers are provided in the picture below:
ATP Molecules
Mitochondria
Nucleus
Synthesis of
Enzymes
Synthesis of
Molecules of
1. The nucleus contains molecules of A, which
A) recycle waste products
C) store hereditary information
B) remove water from the cell
D) regulate the pH of cytoplasm
Explanation:
The complete question is attached below:
3) store hereditary information
The nucleus is a large membrane-bound organelle that houses the genetic information, DNA, as on units called chromosomes. ATP functions as a precursor molecule for more complex nucleotides.
Sequences of DNA make up genes which can have different forms called alleles. DNA is transcribed into mRNA and later translated into amino acids which are linked together by rRNA to form proteins.
Further Explanation:
All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. Chromosomes within the nucleus is unwound, unzipped and read by enzymes in a complex series of steps known as transcription. The message on DNA, called genes is copied by RNA polymerase to form mRNA complementary sequence to that of the DNA strand. These are then translated into proteins in ribosomes.
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Final answer:
The nucleus of a cell stores hereditary information in the form of DNA, making option C) store hereditary information the correct answer to the student's question. Meanwhile, mitochondria produce ATP, the cell's main energy-carrying molecule, through cellular respiration.
Explanation:
The nucleus of a cell is an organelle that functions as the command center, storing the cell’s hereditary information. This information is encoded within the cell’s genetic material, specifically in the deoxyribonucleic acid (DNA). The DNA contains the instructions necessary for the cell to produce all the materials it requires, thus directing the cell’s activities. In answer to the student's question, the nucleus contains molecules of option C) store hereditary information.
Mitochondria, on the other hand, are known as the cell's “powerhouses” or “energy factories” because they are responsible for producing adenosine triphosphate (ATP), which stores energy for the cell. The process by which ATP is created within mitochondria is called cellular respiration, utilizing oxygen to metabolize nutrients such as glucose, and releasing carbon dioxide as a waste product.
Within cells, numerous other organelles and structures work together to support cellular functions. For example, peroxisomes detoxify chemicals, and the cytoskeleton provides structural support. Each of these cellular components has a unique function that contributes to the overall operation and health of the cell.
The enforcement of hunting regulations are conservation measures that promote the A. use of biological controls. B. fur industry. C. exploitation of species. D. preservation of species.
Answer:
the answer is D: the the preservation of species
Explanation:
Answer:
The answer is D. However if you are on study island the letter is C. But it is still PRESERVATION OS SPECIES
Explanation:
Explain how an Enzyme works using the terms from 1-5
The enzyme grabs onto the substrate in a special area called the active site.
The active site is an area of the enzyme that fits around the substrate.
Catalysis is when the substrate is changed.
The enzyme lets go, returns to normal and is ready to do another reaction.
The substrate is no longer the same, it is now called the product.
How does enzyme work?
An enzyme functions through a process called catalysis, where it facilitates chemical reactions in living organisms. The enzyme's active site, a specific region with a unique three-dimensional shape, binds to a substrate, which is the molecule the enzyme acts upon.
This binding creates an enzyme-substrate complex, allowing the enzyme to catalyze the conversion of the substrate into a product. The active site provides a specialized area for the substrate to undergo the chemical changes, ensuring specificity and efficiency in the reaction. Ultimately, the enzyme remains unchanged after the reaction.
The complete question is below:
Explain how an Enzyme works using the terms from 1-5
1. active site
2. substrate
3. product
4. Catalysis
5. area
which answer Choice lists one renewable and one non-renewable resource
1. wind and wood
2. natural gas and solar energy 3. natural gas and petroleum
4. natural gas and coal
Answer:
2
Explanation:
natural gasses come from the earth and and will take a longer time to replenish
solar energy is a renewable resource
sorry if this turns out wrong
Answer:
2. natural gas and solar energy
Explanation:
Renewable resources are those that can be used repeatedly and replaced naturally, as they will replenish over time without human intervention. Non-renewable resources are limited and either don't replenish or do it very very slowly. In this sense, wind, wood, and solar energy are renewable, and natural gas, coal and petroleum are non-renewable. Therefore number 2 is the correct answer.
As a character of all living things, homeostasis relates most directly to which of the following biological themes
Explanation:
As a characteristic of all living things, homeostasis relates most directly to which of the following biological themes?
A.) Interacting systems.
B.) Stability.
C.) Evolution.
D.) Scale and structure.
Correct: B.) Stability.
During homeostasis the body maintains a constant internal balance (stability) in pH, temperature, blood pressure etc. Cells in a multicellular organism become specialized for particular tasks and communicate with one another in order to maintain homeostasis.
Within the human body these are known as hormone cascades, where several complex steps occur- the tissues signal to one another with the use of hormones released by the endocrine system. The regulation (increase and decrease) of these secretions is achieved by negative feedback loops, where the release of certain substances during a cascade in turn halts the secretion of hormones at earlier stages.
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Which type of population growth is shown in this graph?
Population of Bacteria
Population Size
35,000
30,000
25,000
20.000
15.000
10.000
5000
1
2
3
4
5
6
Answer: the answer would be 5 are there on the top the answer would be 15.000 because they both can go in and into each other if you did multiply 5 times 3 equals 15
Explanation:
The graph shows exponential population growth.
We can tell this because the population size increases rapidly over time, without showing any signs of slowing down or leveling off. This is characteristic of exponential growth, where the population grows at a constant rate.
In contrast to exponential growth, logistic growth shows a period of rapid growth followed by a leveling off as the population approaches its carrying capacity (the maximum population size an environment can support).
14. Which is true about a dependent variable in an experiment?
a. It is the experimental data.
b. It is manipulated by a scientist.
c. It never changes during the experiment.
d. It is not affected by the independent variable.
c. It never changes during the experiment.
A dependent variable never changes during the experiment. So, the correct option is (C).
What is Dependent Variable?Dependent and independent variables are types of variables in mathematical modeling, statistical modeling, and experimental science. Dependent variables are defined because their values are studied under or demanded that they depend, by some law or rule, on the values of other variables.
A dependent variable is what is measured in the experiment and what is affected during the experiment.
The dependent variable reacts to the independent variable because it is called dependent because it "depends" on the independent variable.
Thus, a dependent variable never changes during the experiment. So, the correct option is (C).
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Which is a difference between plant and animal cells?
Answer:
Some differences are cell walls, plants have large vacuoles, and plants have chloroplasts
Explanation:
Answer:
B. a plant cell has a well defined shape, because it has a cell wall
Identify the structures in the cell pictured on the right.
Screenshot will provide you with the correct answers.
20 pts! Why is anaerobic respiration energetically less efficient than aerobic respiration?
The aerobic respiration process uses a respiratory electron transport chain, while anaerobic respiration uses a molecular electron transport chain.
Anaerobes use less oxidizing substances like sulfate or nitrate during the electron transport chain so less energy is released per oxidized molecule.
Anaerobes use only oxygen during the electron transport chain, while aerobes use both oxygen and carbon dioxide which results in a more efficient process.
Anaerobes' terminal electron receptors have larger reduction potentials than O2 meaning that more energy is released per oxidized molecule.
Answer:
Anaerobes use less oxidizing substances like sulfate or nitrate during the electron transport chain so less energy is released per oxidized molecule.
Explanation:
Anaerobes use fewer oxidizing substances such as sulfate or nitrate during the electron transport chain, so less energy is released per oxidized molecule. This is because unlike aerobic respiration, in the anaerobic process there is no need for oxygen and glucose will be formed from the body's own food or reserves.
In this process of metabolic function there is no presence of oxygen and the energy comes from the ATP molecule, formed by the adenine nitrogen base, sugar, and three phosphates. This connection, when necessary, is broken for the release of energy.
In this case, glucose will originate from food or reserves created by the body itself. Thus, in the cell cytosol, this substance undergoes several reactions, caused by various enzymes, and then pyruvate, also used in aerobic respiration, will be generated. During the anaerobic respiration process, the ADP (adenosine phosphate) molecule receives a phosphate. After this, ATP formation occurs.
Final answer:
Anaerobic respiration produces only 2 ATP per glucose molecule due to the use of less efficient final electron acceptors, such as sulfate or nitrate, compared to oxygen used in aerobic respiration, which can yield up to 38 ATP. This makes anaerobic respiration significantly less efficient in energy production.
Explanation:
Anaerobic respiration is energetically less efficient than aerobic respiration because it yields far less ATP per glucose molecule. Anaerobic respiration produces only 2 ATP molecules, whereas aerobic respiration can produce up to 38 ATP molecules. The key difference is the presence of oxygen. In aerobic respiration, oxygen serves as the final electron acceptor in the electron transport chain and allows for a more complete oxidation of glucose, leading to the production of a larger amount of ATP through oxidative phosphorylation.
During anaerobic respiration, the lack of oxygen means that alternative less oxidizing substances like sulfate or nitrate serve as the final electron acceptors. These have lesser reduction potentials compared to oxygen, which results in far less energy being released during their reduction. The result is a significantly decreased yield of ATP from the process of electron transport and phosphorylation. Additionally, the electron transport chain in anaerobes can be less efficient due to different electron carriers that produce smaller electrochemical gradients.
The inefficiency of anaerobic respiration impacts organisms heavily; to obtain the same amount of energy as aerobic respiration, a much larger quantity of glucose must be metabolized. This is a critical limitation for anaerobic organisms and is a significant factor in the dominance of aerobic organisms in most environments on Earth.
6. Who discovered DNA typing?
Robert Ultman
ooooo
Daniel Martin
Thomas Nobel
Alec Jeffreys
Answer:
It was Alec Jeffrey
Which of the following is the most specific group used to classify organisms?
Final answer:
The most specific classification category for organisms is the species, which represents a group capable of interbreeding and producing fertile offspring. It is the final and most precise category in the Linnaean system of taxonomic classification.
Explanation:
The most specific group used to classify organisms within the modern taxonomic classification system is the species. This system, also known as the Linnaean system after its inventor Carl Linnaeus, organizes life forms into a hierarchy from the least specific to the most specific categories. The order from the broadest to the most specific is: domain, kingdom, phylum, class, order, family, genus, and species. The species is the most precisely defined category, representing a group of organisms that can interbreed and produce fertile offspring. Under the binomial nomenclature system, each species has a unique two-part scientific name consisting of its genus and species designations, such as in Homo sapiens, where 'Homo' is the genus and 'sapiens' is the species.
which is the most accurate statement
A. the scientific method and technology development follow different steps.
B. scientists design new tools when engineers are able to create them.
C. engineers create questions, and scientists try to answer them.
D. science and technology rely on and influence each other.
Answer:
D: science and technology rely on and influence each other. This is the most accurate statement.
Explanation:
Any technology would use science to solve its problems. Science, in turn, uses technology to make new discoveries and prove them. For example: engineer create microscopes, monitors etc and science uses all these tools to do research and perform their scientific methods for new discoveries. When an engineer thinks of designing something new, he understands science, i.e. he would try to understand all the laws scientists have discovered and proved.
This way both science and technology not only rely on each other but also influence each other.
in the early days of the solar system, many planetesimals orbited the Sun. Theory has it that one large planetesimal the
size of Mars struck a glancing blow to the molten Earth. How did this event contribute to the formation of the Moon?
This event led to the breaking away of a part of earth and the part was held on by earth’s gravity and this part became the moon.
Explanation:
The formation of moon was after the formation of the earth. In the initial years of the formation of earth it was affected by several asteroid hits and comets. Small planets referred to as planetesimals also kept continuously affecting the earth. Before 4.5 billion years ago a planetesimal which was about the size of Mars hit earth.
This hit led to the breaking away of a part of earth. The part which was sent to space by the hit was caught by the gravity of the earth and the part started orbiting around the earth. The similarity of the rocks in moon to that of earth is attributed to the fact that moon was actually formed from earth.
The moon and earth keeps influencing each other. The moon’s effect reduced the speed of earth’s rotation and the moon keeps moving away from the earth due to the influence of earth.
Answer:
Molten rock broke off from Earth following the impact. The rock coalesced (gathered) into a ball, which formed the Moon.
Explanation:
Which molecule carries the energy produced
during cellular respiration?
glucose
carbon dioxide
АТР
Answer:
Energy is produced via ATP during cellular respiration. ATP is the body's energy currency and is used in many processes.
Explanation:
Enzyme A is currently functioning at a temperature of 55 and a pH of 7. According to the information provided in the chart, select all factors that would increase the rate of function of enzyme A?
The factors that increase the rate of function of enzyme A are optimal temperature, optimal pH, and substrate concentration.
Explanation:The factors that would increase the rate of function of enzyme A are:
Optimal Temperature: Enzyme activity generally increases with temperature, but outside the optimal temperature range, high temperatures can cause enzymes to denature and lose their function.Optimal pH: Enzymes function best within a specific pH range. Extreme pH values can cause enzymes to denature and lose their activity.Substrate Concentration: Enzyme activity is increased at higher substrate concentrations until it reaches a saturation point where the enzyme can no longer bind additional substrate.Learn more about Factors that increase enzyme rate of function here:https://brainly.com/question/35490731
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Final answer:
To increase the activity of enzyme A, one should reduce the temperature to the optimum of 37 degrees Celsius and maintain the pH at 7. Additionally, adjusting concentrations of enzymes, substrates and understanding ionic conditions can also affect enzyme activity.
Explanation:
To increase the rate of function of enzyme A, based on the information provided, it is necessary to adjust temperature and pH to optimal levels. Since the enzyme amylase has an optimal temperature of approximately 37 degrees Celsius and the current temperature of enzyme A's environment is 55 degrees, reducing the temperature would increase the enzyme activity. The optimal pH for amylase is around 7, which is already the current pH level for enzyme A, so maintaining this pH will ensure maximum enzyme efficiency.
Beyond environmental factors, increasing the concentration of the enzyme or the substrate may improve the enzyme's rate of reaction, provided that saturation point isn't reached for the enzyme. It's also important to note that a build-up of product concentration can inhibit enzyme activity, and altering ionic conditions can affect enzyme function.
However, if the temperature is raised further beyond the optimal, it can lead to denaturation of the enzyme, thus decreasing its rate of activity. In summary, reducing the temperature to 37 degrees Celsius while maintaining a pH of 7 and considering the concentration of enzymes, substrates, products, and the ionic environment would be the factors to increase the rate of function of enzyme A.
5. Explain how an enzyme changes the activation energy of a reaction.
Answer:
enzymes are protein that increase the rate of a reaction by decreasing the amount of energy needed to get a reaction started
Explanation:
enzyme inhibitors give substances that bind to an enzyme and change its shape or block its ability to interact with the chemical reaction