Answer:
Non-coding DNA regions play important roles in regulating transcriptional activity by encoding different types of non-coding RNAs (ncRNAs), acting as scaffold attachment regions, acting as enhancer specific regions, etc.
Explanation:
Historically, it had been believed that non-coding DNA sequences were 'junk DNA' since they don't encode for proteins (beyond the sequences that are transcribed into functional non-coding RNAs, i.e., transfer RNA and ribosomal RNA). However, in the last years, it has been shown that non-coding DNA sequences play critical roles in regulating gene expression and genome function. For example, evolutionary conserved non-coding RNAs (ncRNAs) with regulatory roles on gene expression such as, for example, long non-coding RNAs (lncRNAs) and microRNAs (miRNAs) have been mapped in non-coding DNA sequences, thereby evidencing the functional significance of these regions. In consequence, the conservative nature of certain non-coding DNA sequences evidence that mutations in such regions may have significant deleterious effects, and thereby they could have a negative impact on the fitness of the individual.
Which best describes the outcome of DNA replication?
1) The new DNA molecule is identical to the original DNA.
2) The new DNA molecule is synthesized from amino acids.
3) The new DNA molecule has a different number of codons.
4) The new DNA molecule is single-stranded.
Which of the following animals is successful because it moves quickly, reproduces rapidly, and has a waterproof external skeleton?
A. Ant
B. mouse
C. Bird
D. Squirrel
1. Which level of biological organization, from smallest to largest, is
correct? *
A. Organ System, Organ, Tissue, Cell
B. Cell, Organ, Tissue, Organ System
C. Cell, Tissue, Organ, Organ System
D. Tissue, Cell, Organ, Organ System
Answer:
Cell, Tissue , Organ, Organ System
When an enemy cell is present, a(n) __________ secretes perforins, which bore a hole in the enemy cell membrane.
a. interleukin
b. antibody
c. interferon
d. natural killer cell
e. opsonization
The correct answers is D. Natural killer cell
Explanation:
Natural killer cells are a type of cell in the immune system. These differ from other cells because these are innate, this means they attack all enemy cells or pathogens and are not specific. Also, they are the first general immune defense.
Moreover, the role of these cells to attack any enemy cell including cancer cells is possible due to specific chemicals or substances these cells release. One of these is perforins, which are mainly released by natural killer cells and destroy these by creating lesions in the cell membrane. According to this, the correct answer is D.
I need help please :(
Answer:
The answer willk be option C- Under the age of 20
why it is important to reduce friction in moveable joints
Answer:
Smooth cartilage prevents friction as the bones move against one another. in freely moveable joints, the entire joint is enclosed inside a membrane filled with lubricating synovial fluid, which helps to provide extra cushioning against impact.
PLEASE HELP I WILL MARK YOU AS BRAINLIST
Answer:
answer is (c)
Explanation:
.. ......
Choose the following true statement:
a)When cells are finished with their tasks, they work, they die, and are replaced by new cells
b)Once a cell is made, the body will not regenerate new ones.
c)There are limited amount of cells the body can produce
d)All cells will continuously multiply forever.
Answer:
D
Explanation:
because. when one cell dies another is replaced so it gos on forever and ever
HELP PLEASEEE
Once a population reaches its carrying capacity, the growth rates
are able to return to what they were before resources were
limited.
SELECT AN ANSWER
True
False
Answer:
T :)
Explanation:
which substance compose the backbone of DNA
Answer:
phosphate and deoxyribose
Explanation:
Answer:
Phosphates and sugars
Explanation:
The photos below show specialized cells of a plant.
Which function are these cells specialized for performing?
Answer:
Photosynthesis
Explanation:
The green structures in the cell are chloroplasts. They are green because they contain the green pigment chlorophyll. Chlorophyll traps light energy and uses it to produce sugar molecules as food for the cell.
If plant cells have both chloroplast and mitochondrial, What will likely happen to the glucose and oxygen once they are produced in photosynthesis?
Which two characteristics do polar and dry climates have in common?
high altitude and very cold winters
very cold winters and contrasting seasons
contrasting seasons and very little precipitation
very little precipitation and few, specialized plants
Answer:
D. very little precipitation and few, specialized plants
Explanation:
its the answer on edge
The two characteristics which polar and dry climates have in common include very little precipitation and few specialized plants. Thus, the correct option is D.
What are Polar and Dry climates?A polar climate is a place where the climate generally has a temperature below the freezing, icy, and it is covered in snow. These areas do not get enough amount of direct heat and sunlight from the sun. Polar climates are located at the North Pole of the Arctic, and at the South Pole on the continent of Antarctica.
The dry climate are found in deserts which are very dry and the temperature of these areas are very high.
Both of these climates show some common characteristics such as very little precipitation and few specialized plants which can survive in these conditions.
Therefore, the correct option is D.
Learn more about Climate here:
https://brainly.com/question/10440860
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Type the correct answer in the box.
Write the full form of the abbreviation.
The full form of BUN is what
Answer:
Blood Urea Nitrogen
Explanation:
I hope this helps :)
what do the nucleus cell, mitohondira cell, cell wall, chloroplast cell, cyptoplasm cell, and cell mabrane do?
Answer:
nucleus- this is where all genetic information is stored.
mitochondria- where respiration occurs
cell wall- gives the cell structure and prevents it from bursting
chloroplast- contain chlorophyll which stores energy from the sun for photosynthesis
cytoplasm- where chemical reactions occur
cell membrane- controls what comes in and out of the cell.
mitochondria: where respiration occurs
cell wall: gives the cell structure and prevents it from bursting
chloroplast: contain chlorophyll which stores energy from the sun for photosynthesis
cytoplasm: where chemical reactions occur
cell membrane: controls what comes in and out of the cell.
Why am I smart in some subjects but not others?
Answer:
it goes with your interest
Answer:
The subject you are smart in is the subject you are more interested in but you also would like all subjects and progress great in them you just have to find the right learning space or techniques
Explanation:
Part A
Scientific inquiry consists of a(n)
approach to resolving a question.
View Available Hint(s)
linear
fail-safe
implausible
stepwise
Answer:
The correct Hint is D) Stepwise
Explanation:
Scientific inquiry usually involves a process through which scientists try to resolve tough problems.
Many people have proposed various steps to the methodology of scientific inquiry. There is one that has 3 steps, one that has 5 steps, and another that has 7 steps.
The 7 steps of scientific inquiry are given below:
Defining the Question. Stating the Research. Postulating the Hypothesis. Carrying our the Experiment. Making Observations. Reaching Results/Conclusion.Communicate. Present/share your results. Replicate.Cheers
Which of the following statement is true:
Reptiles do not live very long.
Amphibians and reptiles are born similar in size.
Amphibian and reptiles are similar vertebrates.
Amphibians and reptiles eat identical organisms.
Answer:
C or D
Explanation:
Answer:
Amphibians and reptile are somewhat alike and they are not born the same size so I am leaning more towards c
Explanation:
to check temperature in large or thick foods, you should:
-an infrared thermometer
-a bimetallic stemmed thermometer
-a thermocouple thermometer
-a pop up thermometer
Answer: A bimetallic stemmed thermometer:
Explanation:
Compare and contrast evaporation and condensation.
Answer:
By definition, evaporation is a process where water changes into vapour. Condensation is the opposite process where water vapour is converted to tiny droplets of water. Evaporation occurs before a liquid reaches its boiling point. Condensation is a phase change regardless of the temperature.
Drag each tile to the correct location. Not all labels will be used. Identify the phases in the life cycle of small and big stars. supernova: In this stage, the star collapses and produces elements heavier than iron. planetary nebula: In this stage, the star emits strong energy pulses that push away the outer layers creating a cloud of ionized gas around the core. neutron star: In this stage, the star has reduced to an extremely dense core. white dwarf: In this stage, the star has reduced to a dense core.
Answer:
large= supergiant, supernova, then a neutron star
small= giant, planetary nebula, white dwarf
Explanation:
star life cycle changes by these phases
summer squash purchased at your local grocery store would be biologically classified as a
Answer:
considered a vegetable.
Explanation:
How does the formation of NAD+ differ between aerobic and anaerobic respiration?
A. NAD+ is formed in aerobic respiration by a fermentation process and formed in anaerobic respiration by oxidation of NADH.
B. NAD+ is formed by a fermentation process in anaerobic respiration by the conversion of pyruvate into lactate and by simple oxidation of NADH in aerobic respiration.
C. Under aerobic conditions, the electron acceptor is a molecule other than oxygen for NAD+ production, whereas under anaerobic conditions the electron acceptor is oxygen.
D. NAD+ is formed by the breakdown of pyruvate to form oxaloacetate in anaerobic respiration whereas in aerobic respiration it is formed by the breakdown of pyruvate into lactic acid or alcohol.
Answer:
B. NAD+ is formed by a fermentation process in anaerobic respiration by the conversion of pyruvate into lactate and by simple oxidation of NADH in aerobic respiration.
Explanation:
Nicotinamide adenine dinucleotide (NAD) is an important coenzyme that may exist in two different forms: oxidized (NAD+) and reduced (NADH). The fermentation is an anaerobic oxidation-reduction reaction where pyruvate and NADH are reactants, while lactate and NAD+ are products generated by the oxidation of NADH to NAD+ and pyruvate to lactate, respectively. On the other hand, during aerobic respiration, NADH generated by glycolysis is oxidized to form NAD+ by the donation of its electrons to reduce pyruvate to lactate. Subsequently, NAD+ is reused in glycolysis (again) in order to generate more molecules of ATP.
what is the last step in scientific method
Answer:
Step 1- Question.
Step 2-Research.
Step 3-Hypothesis.
Step 4-Experiment.
Step 5-Observations.
Step 6-Results/Conclusion.
Step 7- Communicate. Present/share your results. Replicate.
Answer:
1. Ask a question
2. Hypothesis
3. Prediction
4. Experiment
5. Analyse Data
6. Conclustion
Explanation:
The last step in a scientific method is the Conclusion. Edgenuity 2020. Just took the assignment.
List the layers of the atmosphere
Answer:
troposphere
stratosphere
mesosphere
thermosphere
exosphere
Troposphere, Stratosphere, Mesosphere, Thermosphere, Ionosphere, and Exosphere
Explanation:
I need help with this please help me!!
Answer:
i need help with this too somebody help
Explanation:
What type of scientist is most likely to study to cooling of lava after a volcanic eruption
What is the role of DNA polymerase in DNA replication?
A. It ties the chunks of DNA together.
B. It creates the replication fork.
C. It checks the DNA for errors.
D. It breaks apart the bases.
Answer: it checks the DNA for errors
Explanation:
Just took test
Answer:
A. ties chunks of dna together, took the test
Explanation:
Activator or repressor proteins which bind DNA to regulate the transcription of genes do so mainly by: A. Covalent interactions between the protein and specific bases in the major groove of DNA B. Covalent interactions of Zn2 atoms with the phosphodiester backbone C. Non-covalent interactions between the protein and specific bases in the major groove of DNA D. Covalent interactions with nearby nucleosomes E. Answers B and D are correct
Answer:
C. Non-covalent interactions between the protein and specific bases in the major groove of DNA
Explanation:
Activator or repressor proteins are proteins with specific DNA-binding domains that have affinity by one or two DNA strands. In general, these proteins interact with the major groove of the B-DNA structure since this structure exposes more functional groups for binding. Non-covalent interactions are a type of interaction that does not involve the sharing of electrons. The interaction between proteins and DNA is due to the combination of different non-covalent interactions, which can be classified into four major types: van der Waals, hydrophobic, hydrogen and ionic interactions.
Sweet yellow tomatoes with a pear shape bring a high price per basket to growers. Pear shape, yellow color, and terminal flower position are recessive traits produced by alleles, f, r, and t, respectively.
The dominant phenotypes for each trait – full shape, red color, and axial flower position – are the product of dominant alleles F, R, and T. A farmer has two pure-breeding tomato lines. One is full, yellow, terminal and the other is pear, red, axial. Design a breeding experiment (crosses) that will produce a line with tomato that is pure-breeding for pear shape, yellow color, and axial flower position.
Answer and Explanation: The farmer has a pure-breeding line of tomato means the farmer has a tomato with genotype FFrrtt while the other line of tomato has genotype ffRRTT.
The cross between these lines gives a F1 generation of heterozygous full, red and axial or FfRrTt.
With an individual of F1 crosses with another individual of F1, the Punnet Square will be:
FfRrTt x FfRrTt
1) Dividing each characteristics, for simplicity:
F f
F FF Ff
f Ff ff
R r
R RR Rr
r Rr rr
T t
T TT Tt
t Tt tt
Analysing Punnett squares, we notice the line wanted (ffrrTT) will be produced, when an individual of F1 generation cross with another individual with the same generation.
