brainscape: Restriction enzymes: A) act at the membrane to restrict the passage of certain molecules into the cell. B) are highly specialized ribonucleases that degrade mRNA soon after its synthesis. C) are sequence-specific DNA endonucleases. D) are very specific proteases that cleave peptides at only certain sequences. E) catalyze the addition of a certain amino acid to a specific tRNA. c The biological role of restriction enzymes is to: A) aid recombinant DNA research. B) degrade foreign DNA that enters a bacterium. C) make bacteria resistant to antibiotics. D) restrict the damage to DNA by ultraviolet light. E) restrict the size of DNA in certain bacteria.
Answers
Answer:
C) are sequence-specific DNA endonucleases
B) degrade foreign DNA that enters a bacterium.
Explanation:
Restriction enzymes are the proteins that cut the DNA at a specific sequence.
Restriction enzymes are also known as restriction endonuclease produced by bacteria that recognizes a specific sequence on DNA and split it by catalyzing the hydrolysis or addition of water molecule. So, Restriction enzymes are sequence-specific DNA endonucleases.
The biological role of restriction enzymes is to restrict the entry of foreign DNA into the bacterium. Restriction enzymes have the ability to restrict the number of bacteriophage strains that affect bacteria.
Hence, the correct options are "C and B"
Related Questions
I just need to know if #21 & 22 are correct :)
Answers
Answer:
correct
Explanation:
Scarification is a process that scratches up the surfaces of seeds that pass through the guts of birds. A student wanted to see if scarified seeds grew better than those that were not scarified. He simulated scarification by rubbing 20 cherry seeds with sandpaper. Another set of 20 cherry seeds were left alone. The student planted each of the seeds into separate pots and gave them the same amount of water daily. The pots were placed in a location with a constant temperature of approximately 25 degrees C. The number of seeds that germinated each group was recorded daily for three weeks. Which is the control group?
Which is the experimental group?
What is the independent variable?
What is the dependent variable?
Name at least one controlled variable?
Was quantitative or qualitative data collected?
Answers
The control group is the set of non-scarified seeds. The experimental group is the set of scarified seeds. The independent variable is scarification process. The dependent variable. is the number of seeds that germinated in each group.
Controlled variables are the amount of water supplied daily, the constant temperature of the growing environment, the type of cherry seeds used and the size of the planting pots.
Quantitative data are the daily count of the number of seeds that germinated in each group over three weeks.
The study does not have qualitative data.
Differences between dependent and independent variablesThe independent variable needs no stimulus to generate results.The dependent variable needs to be stimulated by the independent variable to generate results.A scientific experiment needs to feature all of the elements represented above to be effective and reliable. This is because these elements prove that the experiment was carried out methodically, specifically, and with care in each variable and presented data.
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what type of stream valley forms oxbow lakes ?
1. Youthful stream valley
2.mature stream valley
3. Old age stream valley
Answers
Answer:
I thik answer is 2 number
Placebos are sometimes used in research in order to demonstrate the effects of participant expectations or beliefs on the outcome of behavior true or false
Answers
Answer:
true
Explanation:
Describe the life cycle of our sun and its likely outcome when it eventually dies.
Answers
Let's get ready for a cosmic ride, then, shall we? Hence, the four main stages of the Sun's life cycle are Birth, Main Sequence, Red Giant, and Death. Starting from the beginning, our star was created from the combination of gas and dust clouds roughly 4.6 billion years ago. Today, Sun is happily burning away in its main sequence stage as we quickly advance to the future. However, nothing lasts forever, just like everything else in the universe. When the Sun eventually runs out of fuel, the Red Giant phase, during which it will dramatically expand and consume Mercury and Venus while making Earth toast (one-way ticket to Mars anyone? ). The Sun will eventually lose its outer layer to become a planetary nebula, leaving behind an incredibly dense core known as a white dwarf—pretty cool, huh?—in what would be a stunning sight (if we were still alive).
Mark my answer as the brainliest!
One advantage of the __________ model is quick recognition. A. prototype B. exemplar C. language D. concept
Answers
Answer:
A.
prototype
Explanation:
Answer:
A. Prototype
Explanation:
hope it helps :)
Describe the development of the zygote until implantation occurs.
Answers
With what movement do plants react to water
Answers
Answer:
chemotropism
Explanation:
There are three hypotheses that explain the movement of water up a plant against gravity. These hypotheses are not mutually exclusive, and each contribute to movement of water in a plant, but only one can explain the height of tall trees: Root pressure pushes water up; Capillary action draws water up within the xylem
What caused the change in the fireballs velocity as it traveled
Answers
Forces affect how objects move. They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object, we can say that forces cause changes in velocity. Remember that acceleration is a change in velocity. Have a blessed day!! :D
Force caused the change in the fireballs velocity as it travelled.
What do you mean by force?A force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull.
A force is a vector quantity which means that it has both a magnitude (size) and a direction associated with it. If the size and direction of the forces acting on an object are exactly balanced, then there is no net force acting on the object and the object is said to be in equilibrium.
The SI derived unit used to measure energy or work. One joule is equal to the energy used to accelerate a body with a mass of one kilogram using one newton of force over a distance of one meter.
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HELP PLEASE PLEASE PLEASE PLEASE
Answers
Answer:
one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.
ILL GIVE BRAINLIST
Darren used the following soil triangle to identify a sample of soil as sandy loam.
Soil texture triangle. Clay soil is approximately 45 percent or less sand, 50 percent or more clay, and 40 percent or less silt. Silty loam soil is approximately 50 percent or less sand, 30 percent or less clay, and 50 percent or more silt. Sandy clay soil is approximately 45 to 65 percent sand, 35 to 55 percent clay, and 25 percent or less silt. Sandy clay loam soil is approximately 45 to 80 percent sand, 20 to 35 percent clay, and 35 percent or less silt.
Which description of soil likely allowed Darren to make this identification?
Mostly large particles, with a gritty texture, 60% sand, 10% clay, and 30% silt
Mostly large particles, with a smooth texture, 40% sand, 50% clay, and 10% silt
Mostly small particles, with a smooth texture, 10% sand, 50% clay, and 40% silt
Mostly small particles, with a smooth texture, 30% sand, 30% clay, and 40% silt
Answers
Answer: I'm not sure but i think it's Mostly small particles, with a smooth texture, 10% sand, 50% clay, and 40% silt
Explanation:
Soil Texture is defined as the proportion of sand, silt, and clay-sized particles, which make up the composition of the soil.
The description that matches Darren's identification is that most small particles, with a smooth texture, are 10% sand, 50% clay, and 40% silt.
The soil texture can be explained as:
1. Clay in soil texture refers to the mineral soil particles that are less than 0.2 millimeters in diameter. Clay soil is 40% or more clay, less than 45% sand, and less than 40% slit.
2. Silt in the soil texture has a high percentage of sand and it feels smooth, having smooth textures. This soil has a high percentage of clay.
3. Sand is the largest mineral particle, which consists of the coarsest particles. The particles feel gritty and have a diameter of about 0.05 to 0.002 mm.
Thus, the correct answer is Option C.
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Help pls !!
How do increases in the carrying capacity of Earth for people affect the carrying capacity of Earth for other species?
1. It increases for all species .
2. It decreases for all species .
3. It increases for most species
4. It decreases for most species .
Answers
Answer:
It decreases capacity for other species
Explanation:
As humans clear and develop more and more land, the animals that live in the cleared land lose their homes, so they have nowhere to live. This decreases the animals carrying capacity while increasing humans carrying capacity.
Which career combines DNA technology and medicine?
Answers
Answer:
medical genetics
Explanation:
Answer:
medical genetics
is the answer
HELP ASP!! DUE TONIGHT
What stimulates the release of the enzyme amylase into the pancreatic duct so that it can break down starches?
A. acetylcholine molecules from a nearby neuron
B. the breakdown of glucose in the chloroplast
C. the division of the cell
D. the presence of protein in the stomach
E. a decrease in the volume of the large intestine
Answers
Answer:
B
Explanation:
Took the test and got a A
:-)
The release of the enzyme amylase into the pancreatic duct so that it can break down starches is B. the breakdown of glucose in the chloroplast. Thus, option "B" is correct.
How does glucose break down in human beings?Salivary amylase starts the digestion of starch. Around 30% of total starch is digested by salivary amylase into maltose in the mouth. Pancreatic juice also has an amylase enzyme which digests the remaining starch into disaccharides in the small intestine.
Thus, option "B" is correct.
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A crane has a sharp and pointed beak while the duck has a flat beak.Explain why
Answers
Answer:
The crane has a sharp and pointed beak adapted for catching and grasping prey. The sharp beak allows the crane to effectively stab and pierce its prey, such as fish, frogs, or small animals. The pointed shape helps the crane to accurately target its prey and secure a firm grip.
On the other hand, the duck has a flat beak, which is better suited for its specific feeding habits. Ducks are primarily filter feeders, and their flat beak enables them to sift through water or mud to collect small organisms, insects, and plants. The flat beak acts like a sieve, allowing the duck to strain out food particles while retaining water.
The difference in beak shape between the crane and the duck reflects their distinct feeding strategies and ecological roles. Each species has evolved its beak shape to optimize its ability to capture and consume the specific types of food sources available in their respective habitats.
Which is caused by ocean oil pollution?
*animals are unable to adapt to the changing salinity.
*bacteria run out of food to consume
*animals are unable to insulate themselves
*animals can choke or become tangled.
Answers
Answer:
I would say that animals are unable to insulate themselves
Explanation:
i just learned about these things in my bio class.
In the section you just read on Research Ethics in Human Development, three
hypothetical studies were described: 1) A laboratory situation where parents
leave their toddler with a stranger, 2) A laboratory situation where couples
discuss possible secrets they keep from one another, and 3) A study where a
drug might be given to humans to enhance memory. Of the three hypothetical
studies described here, which do you think would be likely to receive IRB
approval and which not?
Answers
Of the three hypotheses studies described here, the one that would likely receive IRB approval would be number 3) A study where a drug can be given to humans to improve memory. IRB approval not required, If the project does not include any interaction or intervention with human subjects or include any access to identifiable private information, then the project does not require IRB review.
What are the three levels of IRB review?IRB must review all projects that meet the definition of research and that involve human participants prior to any data collection to determine the appropriate level of review, and, as appropriate, approve them. There are three major levels of human subjects' research review: Exempt, Expedited, and Full.
With this information, we can conclude that The IRB office utilizes an initial pre-review screening process, during which an IRB analyst reviews each submission for completeness and compliance.
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The cells that are listed are the
Fibrous Cells
Discord Cells
Stellate Cells
Squamous Cells
Answers
discord cells I am not sure but I think it is correct
How do the layers of the atmosphere help to understand better the dynamics of the atmosphere and its relationship to the hydrosphere and lithosphere?
Answers
There are various layers that make up the atmosphere, and each has distinct properties and functions. Both weather generation and energy transmission take place in the troposphere, which is closest to the Earth's surface.
The stratosphere shields the Earth from damaging UV radiation along with the ozone layer. Most auroras happen in the mesosphere, where meteors burn up. Modern technology is dependent on the thermosphere, where the majority of the Earth's satellites orbit and where communication signals are sent.
The dynamics of the atmosphere and its interactions with the hydrosphere and lithosphere are better understood thanks to these layers. Foreseeing and minimising environmental problems like climate change and preserving our world, it is essential to understand the significance of each layer.
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first one to answer gets brainlest
Answers
I'm here!!!Explanation:
Write two paragraphs on fossils: What are they? How are they formed? Where are they found? What we learn from fossils
Answers
Fossils are traces or remains of ancient (dead) organisms. Examples of fossils can be a tooth of a dinosaur, a foot print, bones, stone imprints, shells or even animal waste!
Fossils can be formed in many ways! The two major types of fossils are body fossils and trace fossils.
Let's start with the simpler one!
Trace fossils- They are left-behind tracks, trails or burrows of the actual organism.
Body fossils are the remains of the actual organism. Usually, the soft part of the organism, such as the skin, tissue, muscle, rots away after the animal/creature dies. The hard part, such as the skeleton or bones are more likely to get preserved. Examples of body fossils can be molds and casts.
Fossils can be found all around the world! However, fossils are usually located in sedimentary rocks. They can also be formed in metamorphic rocks, but that's not the usual case. They will never be present in igneous rocks since they are made of substances like molten lava- cooled down.
The study of fossils is known as "paleontology." Scientists who studies fossils are known as "paleontologist"
Fossils can be used to find out when an animal was extinct, where it lived, how it lived, the cause of it's death, how long it lived and even when it first appeared.
Which of the following trait would indicate that an animal is more complex?
a) segmentation
b) intracellular digestion
c) blood vessels
d) shell
Answers
Of the given options, blood vessels would indicate that an animal is more complex. Blood vessels are a characteristic of complex animals such as vertebrates and some invertebrates, as they enable efficient transportation of oxygen, nutrients, and waste products throughout the body.
To explain the given answer , we can see :The presence of blood vessels also allows for the development of specialized organs and tissues, such as the heart, lungs, and brain. In contrast, segmentation, intracellular digestion, and shells are features found in a variety of animal groups, including both simple and complex organisms. Segmentation, for example, is found in annelids and arthropods, while intracellular digestion is present in many unicellular and multicellular organisms. Shells are found in a wide range of invertebrates, from snails to crustaceans. Therefore, while these traits may be important for specific functions or adaptations, they do not necessarily indicate a higher level of complexity in an animal .
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According to the question intracellular digestion would indicate that an animal is more complex.
What is intracellular digestion?Intracellular digestion is the process by which cells break down and absorb nutrients and other molecules. This process is also known as endocytosis. Intracellular digestion occurs through a number of mechanisms, including phagocytosis, pinocytosis, and receptor-mediated endocytosis. In phagocytosis, a cell engulfs a particle or molecule, such as a virus, and then digests it within its membrane-bound vacuole. Pinocytosis involves the uptake of small particles or molecules into the cell through tiny vesicles. Receptor-mediated endocytosis is a process in which specific molecules are taken up into the cell by binding to receptors on its membrane. The molecules are then engulfed and transported into a compartment within the cell, where they are broken down by enzymes.
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could someone please give me the answer to these two boxes ? I am very behind with school, Thank you. :)
Answers
The step 3 exercise tells us that a hybrid male individual and a hybrid female individual (F1) mate with each other and have offspring. In this context, by the term hybrid, we know that the exercise refers to the organisms' genotype having two different alleles for the fur color (in this case we can use B for black fur color, and b for white, for example), what would be Bb. We can complete then the Punnet squares as follows:
Here we can see the information that will be useful to do the other square, which is like the following:
We can compare these two probabilities by saying that for 3 organisms with black fur, there would be 1 with white fur, having a ratio of 3:1. This also can be approached by saying that the predicted percentage usually reflects the simulated numbers and the simulated percentages, since although there can be a lower or higher ratio, it is still near that value: 3:1.
In man, brown eyes (B) are dominant over blue eyes (b) and normal skin pigmentation (N) is dominant over albinism (n). A brown eyed, albino man whose mother had blue eyes and normal skin pigmentation and whose father was albino marries a blue eyed, normally pigmented woman whose father had brown eyes and was albino. (a) What is the woman's genotype
Answers
Answer:
b
Explanation:
The following schemes show the design of a peptide-based chemical probe and the proposed mechanism of its activity-based labeling of protein tyrosine phosphatase, an enzyme that is responsible for removing the phosphate from the tyrosine residue(s) of a peptide in a peptide-sequence specific manner. Based your understanding of the schemes and the relevant lecture material, identify the key structural components of this probe that are responsible for (a) binding, (b) covalently modifying, and (c) reporting, respectively.
Answers
Answer:
hello some vital information is missing attached below is the information
answer :
a) nucleophile and alquene carbon.
b) F^- and PO\(_{3}\)^- , Nu and C=O
c) fluorescence
Explanation:
The key structural components that are responsible for the following are
a)For Binding : the key components responsible for binding are nucleophile and alquene carbon.
b) For Covalently modifying : The key components responsible for covalently Modifying are F^- and PO\(_{3}\)^- , Nu and C=O
c) For reporting : The key components responsible for reporting is fluorescence and this is because the as seen in the second structure tyrosine fluorescence is lost
How do mitochondria support cellular functions?
Responses
They produce proteins.
They store the genetic information.
They convert energy from the sun into glucose.
They convert glucose into usable energy.
Answers
Through a series of chemical reactions, mitochondria break down glucose into an energy molecule known as adenosine triphosphate (ATP), which is used to fuel various other cellular processes.
Answer: They convert glucose into usable energy.
Explanation:
I TOOK THE TEST
Which type of tax are Social Security tax and Medicare tax considered to be?
Answers
Answer:
Social Security tax and Medicare tax are considered to be payroll taxes, which are taxes that are withheld from an employee's paycheck by their employer. These taxes are used to fund Social Security and Medicare programs, which provide benefits to eligible individuals such as retirement income, disability insurance, and healthcare coverage.
Explanation:
white blood cell with fragments in its cytoplasm a. agranulocyte b. granulocyte c. thrombocyte d. platelet
Answers
Answer:
B. Granulocyte
Explanation:
Granulocyte is the type of white blood cell with fragments in its cytoplasm. These fragments usually help in the digesting the cells of the foreign body(pathogenic organisms).
There are three main types of Granulocytes which are known as the Neutrophils, eosinophils, and basophils. They all perform variety of functions ranging from phagocytosis to cell lysis of foreign bodies.
Deforestation and the burning of fossil fuels such as coal and oil have led to higher concentrations of carbon dioxide in the atmosphere
Answers
Deforestation and the burning of fossil fuels such as coal and oil, are the two main causes of higher concentrations of carbon dioxide in the atmosphere.
The statement "Deforestation and the burning of fossil fuels such as coal and oil have led to higher concentrations of carbon dioxide in the atmosphere" refers to the fact that human activities have significantly increased the amount of carbon dioxide in the atmosphere, leading to a rise in global temperatures and climate change.
Deforestation contributes to this problem by reducing the amount of trees that absorb carbon dioxide during photosynthesis, while the burning of fossil fuels releases stored carbon into the atmosphere. These actions have negative impacts on the environment, including increased global temperatures, rising sea levels, and more frequent extreme weather events.
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--The complete question is, Deforestation and the burning of ___________ such as coal and oil, are the two main causes of higher concentrations of carbon dioxide in the atmosphere.--
Why does natural selection occur more when there is competition for resources?
Answers
Natural selection occurs more prominently when there is competition for resources because competition creates selective pressures that drive adaptations and favor certain traits over others.
In any given environment, resources necessary for survival and reproduction, such as food, water, and shelter, are limited. As a result, individuals within a population must compete with one another to obtain these resources.
Competition leads to differential survival and reproductive success among individuals.
Those individuals with advantageous traits or variations that enable them to more effectively acquire and utilize resources have a higher likelihood of survival and producing offspring.
These advantageous traits can be physical characteristics, physiological adaptations, or behavioral strategies that provide a competitive edge.
Through natural selection, individuals possessing beneficial traits are more likely to pass on their genes to the next generation, while individuals with less favorable traits are at a disadvantage.
Over time, this process results in the accumulation of beneficial traits within the population, enhancing their overall fitness and adaptation to the specific environment.
Therefore, competition for resources acts as a driving force for natural selection by selecting for traits that enhance an individual's ability to secure limited resources, survive, and reproduce successfully.
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