Answer:
to cut DNA into fragments of different lengths
Explanation:
A restriction enzyme is a protein that recognizes a specific, short nucleotide sequence and cuts the DNA only at that specific site, which is known as restriction site or target sequence.
More than 400 restriction enzymes have been isolated from the bacteria that manufacture them. In live bacteria, restriction enzymes function to defend the cell against invading viral bacteriophages. Restrictions sites in the viral genome (a "happy accident" of nature, as far as the bacteria are concerned, since they don't appear to have any specific function in the virus) are cleaved by the bacterium's restriction enzymes, fragmenting and destroying the DNA of invading bacteriophages before it can incorporate into the host's genome and take over the cell.
A bacterium is immune to its own restriction enzymes, even if it has the target sequences ordinarily targeted by them. This is because the bacterial restriction sites are highly methylated, making them unrecognizable to the restriction enzyme.
Isn't evolution fantastic?
The correct answer is option C i.e. to cut DNA into fragments of different lengths.
what is restriction enzyme?A restriction enzyme is a bacterial protein that cleaves DNA sequences at sequence-specific places, resulting in DNA fragments with known sequences on both ends.
Certain laboratory processes, such as recombinant DNA technology and genetic engineering, require the use of restriction enzymes.
There are four different types of restriction enzymes: type I, II, III, and IV, which differ principally in structure, cleavage site, specificity, and cofactors.
Both restriction and methylase functions are carried out by a single big enzyme complex in Types I and III enzymes.
The restriction enzyme is independent of its methylase in the Type II system.
Several thousand type II restriction enzymes have been identified from a variety of bacterial species.
These enzymes recognize a few hundred distinct sequences, generally four to eight bases in length.
Type III restriction enzymes are a group of endonucleases that recognize a non-pallindromic sequence, comprising two inversely oriented sites.
Type IV restriction enzymes cleave only methylated DNA and show weak sequence specificity.
hence, the correct answer is option B.
To know more about restriction enzymes here
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Volcanoes are usually formed as a result of _____.
a transform fault boundary, where both plates are oceanic
a convergent boundary, where both plates are continental
a convergent boundary, where at least one of the plates is oceanic
a divergent boundary, where at least one of the plates is oceanic
Answer:
a transform fault boundary, where both plates are oceanic
Explanation:
A volcano is formed when hot molten rock, ash and gases escape from an opening in the Earth's surface. The molten rock and ash solidify as they cool, forming the distinctive volcano shape shown here. As a volcano erupts, it spills lava that flows downslope.
Answer:
a transform fault boundary, where both plates are oceanic
Explanation:
What is produced when an atom loses an electron?
Answer:
It becomes a positively charged ion.
Explanation:
Answer:
it will lose negative charge and become positively charged
could someone please help me out on this? im confused
Answer:
Dependent: Reduction
Independent: Solar Energy
Controlled: B
Explanation:
The dependent variable is what is being measured in the lab.
The independent variable is what is being CHANGED by the individual
The control is what is kept the SAME throughout the lab.
Hope this helped!
Many people try to eliminate fat from their diets. Which is one reason it is
necessary for humans to eat fat?
Answer:
the internal organs of the body is cushioned by fat. fat is adipose tissue stored in the body. fat is as important as such other micro molecules such as protein carbohydrates. they serve the body in many ways out of those one of the important function is protection of internal organs.
What should Jill’s conclusion be?
Answer:
the conclusion should be... depending on the amount of fertilizer you use it will have more or fewer flowers on each plant due to a lot of fertilizer or less. hope this helps have a good day.
can someone please help me ..
Which of the following best describes the relationship between cells and living things in general?
You need to add the pictures for us to see..
How was the process used to construct the tree of life by Carl Woese different from the process used by Jill Banfield?
Answer and Explanation:
Carl Woese used ribosomal RNA genes to study the evolution of living beings. He used these genes because they are present in all organisms, and they all have the same function. The nucleotide sequences change very little, giving a real evolutive vision. Woese compared ribosomal genes among different living beings. The sharper the sequence variation is among two organisms, the bigger the evolutive divergence is. This divergence drowned in a phylogenetic tree shows three well-differentiated domains: Archea, Bacteria, and Eukarya. Jillian Banfield used genes from 16 ribosomal proteins from many different unknown microorganism species. She and her team used metagenomic methods that are the simultaneous analysis of multiple genomes belonging to many organisms in the same sample. These methods allowed detecting different organisms, even when these were neither previously observed nor lab-cultivated. The comparison among these new genomes with many others already known made a place for the construction of a new and more detailed tree of life where many new branches emerged from the three domains.5 points
Transmembrane proteins span the width of the cell membranes. Four types of transmembrane proteins are shown in a section of cell membrane.
groene
Although these proteins have different specific functions, they all-
A-stop chemical reactions within the cell
B-synthesize molecules that signal other cells
C- help the cell interact with its external environment
D- remove large waste particles from the cytoplasm of the cell
Answer:
C. help the cell interact with its external environment
Explanation:
A transmembrane protein (TP) is a type of integral membrane protein that spans the entirety of the cell membrane. Many transmembrane proteins function as gateways to permit the transport of specific substances across the membrane.
Although transmembrane proteins have different specific functions, they always HELP the cell interact with its external environment.
Transmembrane proteins are a broad category of membrane proteins that act as carriers and/or transporters in order to allow the movement of specific substances across cell membranes.
After binding to their specific ligands, the three-dimensional (3D) shape of transmembrane proteins changes in order to allow the movement of molecules and ions through the cell membrane.
For example, aquaporins are a type of transmembrane protein that regulates the entry of water (H2O) molecules into and out of cells.
In conclusion, although transmembrane proteins have different specific functions, they always HELP the cell interact with its external environment.
Learn more in:
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list 5 types of bacteria d their unique home.
Pls help I need the answers ASAP
Balance the following equations. A few of the equations are balanced and will not need
anything done to them. If the equation is already balanced write the word balanced as
your answer.
Answer:
1) 6K + B2O3 ---> 3K2O + 2B
2) 4C + [tex]S_{8} \\[/tex] ---> [tex]4CS_{2}[/tex]
3) 2Na + O2 ---> [tex]Na_{2}O_{2}[/tex]
4) 2N2 + SO2 ---> [tex]2N_{2}O_{5}[/tex]
5) Balanced
6) 4Na + O2 ---> [tex]2Na_{2} O[/tex]
7) 16Al + [tex]3S_{8}[/tex] ---> [tex]8Al_{2}S_{3}[/tex]
8) Balanced
9) Balanced
Explanation:
Which of the following is NOT a photosynthetic pigment?
Cartenoids
cytokines
Chlorophyll
Xanthins
Choose all that apply. Carbohydrates contain the following elements:
Answer: carbon, hydrogen, and oxygen
Explanation:
hydrated carbon which results to sugar and oxygen
Explanation:
plz give me brainiest
Which best explains how to oxygen Atoms,
each with six valence electrons can bond with each other?
Explanation:
Two oxygen atoms bonds with each other via covalent bonding.
In the formation of covalent bonds, two atoms with little to no electronegativity difference combines by sharing of the valence electrons. This why homonuclear molecules can be formed.
Two atoms of the same kind having zero electronegativity difference forms this covalent bonds. There is equal sharing of electron pair between the atoms and there is no electrostatic charge on the molecule.For the oxygen atom with 6 valence electrons;
two electrons are shared by each atoms to make a complete octet and a stable molecule.
I give a brainliest who answers this question. What kind of chemical reaction does this energy diagram show?
look the Photo.
A) exothermic
B) endothermic
C) ionic
D) mass creating
Answer:
b) endothermic
Explanation:
please help me on this
Answer:
secondary succesion
Explanation:
Answer:
its
primary succession
i hope the answer was helpful
Although Arroyo does not mention the term "watershed," it was discussed in the unit as being closely related to and impacted by drought and floods. Please discuss how the watershed relates to drought and heat. How might Arroyo have integrated the term watershed into her talk?
Answer:
The land between the water has become more prevalent because due to droughts, the water has evaporated and dropped.
Explanation:
4. Why must the process of meiosis create only half the number of
chromosomes (23) in each new cell? *
A. The cells are smaller.
B. Egg and sperm cells must only have the number of chromosomes so that when
they combine the number will equal 46.
C. 72 the number of chromosomes are not produced in this process, 46, the total
number is produced.
D. If not, the cell would die.
Answer:
I think it's B.
Explanation:
hope this helps
Answer:
B. Egg and sperm cells must only have the number of chromosomes so that when they combine the number will equal 46.
Explanation:
The purpose of meiosis is to shuffle genetic information and cut the cellular chromosome number in half, from 46 chromosomes to 23 chromosomes. In this way, when an egg and sperm cell combine during fertilization, the resulting embryo will inherit the appropriate amount of unique genetic information from each parent.
Hope this helps!!
A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s2?
Answer:
18 m/s^2 A newton is defined as kg*m/s^2 and you want to accelerate a mass in kg, getting a result of m/s^2. So what you need to do is cancel out the kg unit in the newtons. You can do that by dividing the newtons by kg. So let's do the math. 10.8 kg*m/s^2 / 0.60 kg = 18 m/s^2 So the ball has an acceleration of 18 m/s^2. Remember, look at the units you have and the units you desire. By doing so, the math operations become obvious.
Explanation:
Answer:
18 m/s^2
Explanation:
18 m/s^2 A newton is defined as kg*m/s^2 and you want to accelerate a mass in kg, getting a result of m/s^2. So what you need to do is cancel out the kg unit in the newtons. You can do that by dividing the newtons by kg. So let's do the math. 10.8 kg*m/s^2 / 0.60 kg = 18 m/s^2 So the ball has an acceleration of 18 m/s^2. Remember, look at the units you have and the units you desire. By doing so, the math operations become obvious.
Which gas is released during the light reactions of photosynthesis?
The diffusion of water into or out of a cell is called
solubility
solubility
osmosis
osmosis
selective transport
selective transport
endocytosis
Oxygen enters a cell via:
Active transport
Diffusion
Filtration
Osmosis
Answer:
Oxygen and carbon dioxide move across cell membranes via simple diffusion, a process that requires no energy input and is driven by differences in concentration on either side of the cell membrane.
Explanation:
Simple diffusion is responsible for the spread of an air freshener through a room, or of a few drops of dye to eventually turn a glass of water a uniform color. Molecules naturally disperse from areas of higher concentration to lower concentration.
As oxygen-rich (and carbon dioxide-poor) blood travels by a cell the oxygen diffuses through the cell membrane to the area of lower concentration inside the cell. It can do this easily because the oxygen molecule (O2) is very small and has no charge or polarity. The oxygen is used up rapidly by mitochondria. This rapid consumption causes oxygen to constantly move into the cell from the blood.
The mitochondria creates carbon dioxide (CO2) as a waste product of cellular respiration (the process that makes energy for your body). Because the CO2 is of a higher concentration in the cell than in the blood passing by, this gas continually diffuses out of the cell. It too is small and uncharged so it can pass through cell membranes easily.
These movements require no energy (in the form of ATP) on behalf of the cell.
how does food go bad in what ways can food be preserved
Due to microbial and bacterial attack the food get spoiled.
We can preserved the food by:
Sun dyingcooling in refrigeratorsaltingchemical preservatives like, sodium benzoatePLEASE GIVE ME AS BRAINLIEST
What would be the main problem with reproduction if meiosis did not take place to form sex cells?
Answer:
Fertilization would result in a zygote with twice as many chromosomes as the parents.
Explanation:
Meiosis creates four haploid cells from a diploid parent cell. These haploid cells are the sex cells - sperm cells and egg cells.
Since these cells are haploid (containing 23 chromosomes, half the amount of chromosomes as the parent diploid cells), when they fuse during fertilization, they form a diploid zygote containing 46 chromosomes.
Answer:
B) Fertilization would result in a zygote with half as many chromosomes as the parents.
Explanation:
Of the following statements, WILL MARK YOU BRAINLIEST!!
which is not part of the current rules of animal research?
A. The research must have a clear, scientific purpose.
B. The research must provide humane care and housing.
C. The research must ensure the least amount of suffering possible.
D. The research must use animals whenever possible.
Answer:
Answer D
Explanation:
Because for animal research, you want to use animals as little as possible
Answer:
D: The research must use animals whenever possible.
Explanation:
I got it right on edge
Name two processes that are important in the carbon cycle.
Options: a. Photosynthesis and nitrification b. Nitrification and respiration
c. Photosynthesis and respiration d. Nitrification and denitrification
I'm thinking it's A but am unsure.
Answer:
I think it's C, sorry if I'm wrong. I just took this class.
What is genetic tagging?
O a technique that uses specific antibodies to
visualize features of cells
O a technique that visualizes how specific
genes are used within a cell
O a technique in which cells are purposefully
grown under specific conditions
o an imaging technology used to study features
smaller than the human eye can see
Answer:
a technique that visualizes how specific
genes are used within a cell
Explanation:
31.
The chemical equation below represents a chemical process.
C6H12O6 + 602 6H2O + 6CO2 + ATP
What chemical process is represented by the equation?
A. This process occurs in anaerobic respiration.
B. The process is oxidation in which plants obtain energy.
C. The process is photosynthesis in which plants obtain food and energy in the form of ATP.
D. The process is cellular respiration which chemical energy from food sources is released in
the form of ATP.
Answer:
D
Explanation: D. The process is cellular respiration which chemical energy from food sources is released in
the form of ATP.
Which cells are most likely to increase in number as a result of this adaptation?
neurons
red blood cells
white blood cells
muscle cells
Answer: red blood cells
Explanation: took the test haha
Suppose a scientist must choose whether to publish a report in a newspaper or in a peer-reviewed journal. What is a benefit of publishing in the journal?
Answer/Explanation:
Because the journal is peer-reviewed, it means their report is assessed and critiqued by experts in the field. This means the data is more reliable and more likely to be trusted by other scientists in the field.
Additionally, the journal is likely to be specialized and used to accepting scientific reports, meaning they will have certain regulations and criteria for publishing.