Answer:
The correct option is option A
Explanation:
Restriction enzymes are endocleases that cleave DNA fragment (of usually four, five or six nucleotide long) at specific sites to produce blunt or sticky ends. They recognize palindromic sequences of host DNA when cleaving the specific sites. The sequences below (on complementary strands) give an example of a palindromic sequences.
5'-CCC║GGG-3'
3'-GGG║CCC-5'
As can be seen above, when read from 5' to 3', the two sequences are the same despite being on opposing strands. And when cut between the guanine (G) and cytosine (C) (as shown above), it produces a blunt end. But when cut as shown below produces a sticky end.
5'- G║AATTC -3'
3'- CTTAA║G -5'
The explanation above shows options C and D are right while option A is wrong (hence the correct option).
Also, bacteria prevent their own DNA from been digested by restriction enzymes by adding methyl group to their restriction sites which prevents restriction enzymes from recognizing restriction sites of their DNA; this generally makes bacterial DNA to be highly methylated. This explanation makes option B right also.
What ocean characteristics does sonar help to study?
Answer:
Sonar, short for Sound Navigation and Ranging, is useful for investigating and planning the sea since sound waves travel farther in the water than do radar and light waves
Explanation:
Is this picture below a compound or an element?
What happens to a gas when heat is removed?
A. The particles have more kinetic energy.
B. The particles move faster and become less compact.
C. The particles move slower until the matter changes into a. liquid.
D. The particles reduce their size by at least half.
The Murray River can be found in: South, America ,Europe, Africa ,Australia or Asia? :>
Hey there!
ANSWER:South Australia
EXPLANATION:Where can the Murray river be found?
The Murray River is located in South Australia. Since that's where it's located, you can find it there.
Hope this helps!
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Which type of feed is typically fed to baby chicks?
crumbles
mash
pellets
scratch
When a liquid changes to a gas the process is called?
Answer:
Condensation
Explanation:
the word is called condensation
what is the differences between boiling and autoclaving
Explanation: Water baths reach a maximum boiling point of 100°C (212°F). Autoclaves ideally operate at higher temperatures of 120°C (284°F) and can go as high as 133°C (273 °F) Boiling in a water bath can take an hour or longer for effective sterilization to be achieved.
What are the roles of the two test
groups in this
investigation?
A. Both are experimental groups, and each
Individually shows the effect of the direction
B. Dhe is the experimental group and one is the
control group, and together they show the
ellect of the direction of light.
C. Both are control groups, but only Test Group)
shows the effect of the direction of light.
D. Both are experimental groups, but only Test
Group 1 shows the effect of the direction of
light
Answer:
We would also need to see the investigation to be able to help sorry
Sue has Parkinson's disease. She takes medication that increases the level of
Answer:
Sue has Parkinson's disease. She takes medication that increases the level of dopamine.
Explanation:
true or false Geoengineering will have no negative effects on the environment.
It is false that geoengineering will have no negative effects on the environment.
What is geoengineering ?Geoengineering, also known as Climate Engineering, is the deliberate, extensive modification of the Earth's environment and climate in order to stop further climate change, halt and stop global warming, and lessen the effects on human society and the ecosystem.
Spraying compounds into the atmosphere to create reflecting aerosols and reflect sunlight into space is known as solar geoengineering. Although this would prevent global temperatures from rising, local or regional temperatures may still rise over the coming years, according to a recent study.
Hence, it is false that geoengineering will have no negative effects on the environment.
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Explain why circulatory problems often occur with people who are bedridden or with inactive people who seldom use their muscles.
Enzymes are biological catalysts. Enzymes are proteins that are found inside cells to
increase the rate of chemical reactions within each cell. Enzymes are denatured
(destroyed) by various environmental conditions. Amylase is an enzyme in the digestive
system that helps to break down complex carbohydrates into simple sugars.
HYPOTHESIS: Amylase works best in an environment with a pH level of 7. what is the independent and dependent variable sum1 please help!
Answer:
Explanation:
independent= pH as you will change the pH in order to test your hypothesis and see if it's true
dependent= how amylase works-needs to be measured so you can see how easily it does it function depending on the pH (dependent on the independent variable)
The independent variable is pH, you change it to test your hypothesis; The dependent variable is the activity of amylase enzyme depend on the pH value.
What are the properties of an enzyme ?Enzymes are protein catalysts that speed up the rate of biochemical reactions
The enzyme activity is pH-specific, catalyze both forward and reverse reaction but do not decide the direction of the biochemical pathway.
An enzyme have active site which bind to substrate and form desired products.
Several factors influence the enzyme activity like heat, temperature and varying pH.
Enzyme show absolute, relative, group, stereo-specificities and regulatory function.
Physical properties include enzyme act as colloid, it become inactivated below boiling point of water.
Enzymes are thermos-labile as it can withstand temperatures of 100 degrees.
The optimum temperature needed for enzymatic activity varies from 25 degrees Celsius to 45 degrees Celsius.
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how new technology and experimental methods can lead to changes in theories.
Answer:
New findings and new evidence about a scientific theory can change the aspects of this scientific theory and in some cases, it can be proved as wrong or can be supported by more strong evidence that can prove its liability.
New technology allows scientists and researchers to study various untouched aspects and leads to find new evidence to support or prove the theory can be either change or unproven.
Thus, new technology and experimental methods can lead to changes in theories.
There are 12 apples 14 oranges and 16 bananas in a fruit basket.what is the ratio apples to bananas
Answer:
12:16
Explanation:
Camille was excited when the new instrument showed up at the lab. She
opened it up and started using it right away. What was her error?
A.) He used an inappropriate instrument.
B.) He used an uncalibrated instrument.
C.) He misread a measurement.
D.) He used the incorrect units.
Answer:
I would say B- it was uncalibrated
Explanation:
he did not take the time to make sure it was calibrated before use
A 7.2 × 10–5 C charge has an electric potential energy of 1.08 × 10–2 J. The electric potential, to the nearest whole number, is V.
Answer:
150.
Explanation:
On edge
The electric potential, to the nearest whole number is 150 V.
What is the electric potential energy?The electric potential energy denoted by U is proportional to the charge and inversely proportional to the distance between the point where its is brought from infinity to the charge.
U = kQ₁Q₂/r
For identical charge,
U =kQ²/r................(1)
and the electric potential is given by
V = kQ /r................(2)
Dividing both the equations, we get
U/V = Q
Substitute charge Q = 7.2 × 10⁻⁵ C, Electric potential energy U = 1.08 × 10⁻² J, then the electric potential will be
V = 1.08 × 10⁻² / 7.2 × 10⁻⁵
V = 150 Volts
Thus, the electric potential is 150 Volts.
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How many elements in nitrogen monoxide?
Answer:
Two elements
Explanation:
Nitrogen and Oxygen only, (NO)
Leigh has collected data and performed statistical
tests for analysis. Describe the conclusions she can
draw about the data based on her analysis.
Answer:
She will obtain results to support -or reject- her working hypothesis. These results are subjected to statistical analyses in order to confirm that they are statistically significant
Explanation:
The scientific method is a rigorous process that consists of raising a working hypothesis, which is tested by experimentation or observational procedures and analysis of the results. The statistical analyses may have key roles during this procedure. In an experiment that involves statistical analyses, the results are subjected to statistical measures to evaluate the significance level and thus confirm (or reject) the statements made in the working hypothesis. The p-value is one of the most used statistical measures to determine if differences are due to randomness, or they are statistically significant.
Answer:
Because the calculated chi-square value of 5.19 is less than the critical value of 7.82, the null hypothesis can be supported. She is 95% confident that there is no significant variation in shell color along the beach coastline.
Explanation:
this is the Sample Response
You catch, tag, and release 35 fish back into a pond. Then, you catch 70 more fish, 12 of which have tags on them. What is the best estimate of the number of fish in the pond?
a.
100
b.
150
c.
142
d.
204
Answer:
D. 204
Explanation:
proportion : 12/70 = 35/x
70(35)=12x
2450=12x
204.166667=x and round it to make it 204.
The best estimate of the number of fish in the pond is 204. Thus, option D is correct.
Calculation:
proportion : 12/70 = 35/x
70(35)=12x
2450=12x
204.166667=x and round it to make it 204.
What is average speed?Average speed has been defined as the total distance travelled in total time taken it means that we can calculate the average speed obtained by an object .
Mathematically,
Average Speed = Total distance travelled/Total time taken
It's S.I unit is meter/second
Average speed is a scalar quantity it means that it has only magnitude not direction.
Ecosystem has been the branch of science that deals with the study of relationship between living organisms and natural phenomena. Ecosystem has the system in which both living as well as nonliving organisms are present in a particular location.
Green plants contain chlorophyll and they prepare there own food in the presence of sunlight and the process is known as photosynthesis. In the process of photosynthesis light energy converted into chemical energy.
Therefore, The best estimate of the number of fish in the pond is 204. Thus, option D is correct.
Calculation:
proportion : 12/70 = 35/x
70(35)=12x
2450=12x
204.166667=x and round it to make it 204.
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Which of the following is true of food webs?
a. Food webs don't actually exist in nature.
b. A food web shows the flow of decomposers
from producers to consumers and, finally, to
producers.
c. In food webs, detritivores break down organic
waste to return nutrients to the ecosystem.
d. When diagramming food chains and food
webs, the arrows should be drawn from the
lower trophic levels to the higher levels to
show the flow of energy.
e. As energy is moved up the food web, most of it
is conserved by the species in the next trophic
levels.
Answer:E
Explanation:
A person’s will be the same on Jupiter and Earth. A person’s will be greater on Jupiter than on Earth.
Answer:
Greater on Jupiter
Explanation:
Gravity depends on mass. Jupiter has more mass than Earth so its gravity is two and a half times greater. Therefore a person will weigh more on Jupiter.
Answer:
A person will be greater on Jupiter than Earth. The surface gravity is having is larger than Earth’s by roughly 2.4 times. So, if you weigh 100 pounds on Earth it would be 240 on Jupiter. Hopefully this helps! Feel free to mark this as brainliest!
Why fatty acids need a protein transporter to move cross membrane?
Answer:
Transport of long-chain fatty ácids across the cell membrane has long been thought to occur by passive diffusion........Fatty ácids transporters hold promise as a future target to rectify lipid fluxes in the body and regain metabolic homeostasis.
Explain the formation of sedimentary rocks?
sedimentary rocks are types of rocks that are formed by the accumulation or deposition of small particles and subsequent cementation of mineral or organical particles on the floor of oceans or other bodies of water at the earths surface
Explanation:
when a sediment is transported down a mountain and along a stream, we are seeing the conversation of
Answer:
The options are
A. density B.volume C. area D.matter
The answer is Matter
Explanation:
When a sediment is transported down a mountain and along a stream, we are seeing the conversation of Matter.
The sediments transport substances which have a mass and they occupy different positions and volumes. This is the main reason why the answer is known as Matter.
What's an example of a monosaccaride?
Answer:
Glucose
Explanation:
Any simple sugar, like glucose, is a monosaccaride.
Select all answers that reflect contributions molecular approaches have made to modern taxonomy. Check All That Apply revealed that ssu rRNA is highly conserved so can be used for classificationrevealed that ssu rRNA is highly conserved so can be used for classification have led to the development of a new taxonomic system divided into domainshave led to the development of a new taxonomic system divided into domains have not changed the overall tree of lifehave not changed the overall tree of life revealed that archaea are more closely related to prokaryotic than eukaryotic cells
Answer:
- revealed that rRNA is highly conserved so can be used for classification
- have led to the development of a new taxonomic system divided into domains
Explanation:
The ribosomal RNA (rRNA) genes are widely used in evolutionary, phylogenetic, and phylogeographic studies as molecular markers because they represent nuclear genes that are highly conserved between species. However, it is important to highlight that rRNA genes form arrays at specific chromosomal sites, thereby they often exhibit pseudogenes that may interfere with their use as molecular markers (i.e., they produce multiple bands in the electrophoresis gel). In 1977, Carl Woese showed that Archaea is an evolutionary lineage separated from Bacteria by using molecular evidence based on an rRNA molecular marker (16S rRNA). Thus, Woese indicated that Eukarya, Bacteria and Archaea represent three different domains that arose separately from an evolutionary ancestor named 'progenote'.
Can you help me please i will give you a branlist and it’s science
Answer:
B.
Explanation:
I think it's because protons are the ones that circle, neutrons stay in the middle becuz they're neutral, and electron are negatively charged?
A biomass pyramid of an ecosystem is shown.
Tertiary consumers
Secondary consumers
Primary consumers
Producers
Which statement provides the best explanation for the difference in biomass of organisms found at each trophic level?
A. Organisms at higher trophic levels have less energy available to them than organisms at lower trophic levels.
B. Organisms at higher trophic levels require smaller habitats than organisms at lower trophic levels.
c. Organisms at lower trophic levels provide less energy than organisms at higher trophic levels.
D. Organisms at lower trophic levels outcompete organisms at higher trophic levels.
Answer:A
Explanation:
The statement provides the best explanation for the difference in biomass of organisms found at each trophic level is: organisms at higher trophic levels have less energy available to them than organisms at lower trophic levels.
WHAT IS TROPHIC LEVEL:Trophic level of an organism refers to the position of the organism in the flow of energy in an ecosystem. Organisms feed on one another in an ecosystem to obtain energy needed for their metabolic activities. More energy is contained in lower trophic levels than that of higher trophic levels. This means that, according to this question, more energy is in the producers than tertiary consumers.Therefore, the statement provides the best explanation for the difference in biomass of organisms found at each trophic level is: organisms at higher trophic levels have less energy available to them than organisms at lower trophic levels.
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A block of wood with a density of 10g/cm^3 is cut in half. What would the
expected density of the two halves be? *
A The density would double.
B The density would halved.
C The density would remain the same.
D The density would increase by a quarter.
the answer to ur problem above is (b)
According to erikson theory which stage of social development is related to adulthood?
CHOICES: A. Trust vs. Mistrust
B. Intimacy vs. Isolation
C. Initiative vs. Guilt
D. Autonomy vs. Shame
Answer:b
Explanation: