Answer: RNAs are not processed before translation in prokaryotes, this process only takes place in eukaryotes.
Explanation:
Messenger RNA or mRNA is a single-straded ribonucleic acid that transfers the genetic information from the DNA (deoxyribonucleic acid) molecule of the cell nucleus to a ribosome (which are the machinery responsible for protein synthesis) in the cytoplasm. mRNA determines the order in which the amino acids of a protein will be joined and acts as a template or pattern for the synthesis of that protein. To accomplish this, the DNA molecule must be transcribed into an RNA molecule, which is used for protein synthesis.
The messenger RNA obtained after transcription is known as primary transcribed RNA or precursor RNA or pre-mRNA, which in most cases is not released from the transcription complex in a fully active form, but in eukaryotes it must undergo modifications before it can perform its function (RNA processing or maturation). These modifications include:
Elimination of fragments (splicing): In most cases, the mRNA undergoes the removal of internal, non-coding sequences called introns, and the connection of exons. This does not occur in prokaryotic cells, as they do not have introns in their DNA.Protection by CAP: Addition to the 5' end of the structure called "cap" or "capping", which is a modified guanine nucleotide, 7-methylguanosine triphosphate, via a 5'-5' triphosphate linkage, instead of the usual 3',5'-phosphodiester linkage. This cap is necessary for the normal RNA translation process and to maintain its stability. Polyadenylation signal: Addition to the 3' end of a poly-A tail, a long polyadenylate sequence, whose bases are all adenine. Its addition is mediated by a sequence or polyadenylation signal (AAAAAA), located 11-30 nucleotides upstream of the original 3' end. This tail protects the mRNA from degradation, and increases its half-life in the cytosol, so that more protein can be synthesized.The mature mRNA (in eukaryotes) is transferred to the cytosol of the cell through pores in the nuclear envelope. Once in the cytoplasm, ribosomes are coupled to the mRNA. However, in prokaryotes, ribosome binding occurs while the mRNA strand is being synthesized. After a certain amount of time, the mRNA is degraded into its component nucleotides by ribonucleases. So, the transcription and translation processes are carried out in a similar way as in eukaryotic cells but they occur simultaneously. But, the fundamental difference is that, in prokaryotes, the messenger RNA does not undergo a maturation process and, therefore, no cap or tail is added and no introns are removed. Moreover, it does not have to leave the nucleus as in eukaryotes, because in prokaryotic cells there is no defined nucleus.
So, RNAs are not processed before translation in prokaryotes, this process only takes place in eukaryotes.
Biology multiple choice.
Answer:
A
Explanation:
the ectoderm is the outer cell layer. Note the root ecto- this means outer
Question 9
Food web....
A. An animal that eats only other animals
B. An animal that eats only plants
C. A diagram for displaying the feeding relationships among all the organisms in an ecosystem
D. An organism that eats dead or decaying matter and changes it into nutrients or minerals
Answer:
d is correct
Explanation:
After phagocytosis occurs, enzymes from which organelle can digest what is in the vesicle/vacuole?
Answer: Phagocytosis and Autophagy
Such large particles are taken up in phagocytic vacuoles (phagosomes), which then fuse with lysosomes, resulting in digestion of their contents.
Explanation: That's what I would say. Hope this helped and i hope you have a beautiful day:]
Answer:
lysosome
Explanation:
. You could consider the chloroplasts and mitochondria in cells to be analogous to a. waste dumps. c. power plants. b. resource depletion centers. d. self-contained, non-interactive entities.
Answer:
power plants
i think but i dont really know sorry
Explanation:
_____ is a side effect of tabacco use
Answer:
Cancer, heart disease, stroke, lung diseases, diabetes, and chronic obstructive pulmonary disease (COPD)Explanation:
Hopes this helps. Mark as brainlest plz!Biology multiple choice.
Answer:
False
Explanation:
The vascular cambium forms outside the xylem, but NOT the phloem.
https://th.bing.com/th/id/OIP.RzrbM9jY6zdWYt5jBKhX0QHaEu?pid=ImgDet&rs=1
Heat energy is transferred through solids, liquids, and gases. How is heat transferred throughout the world’s oceans?
A) The warmed atmosphere transfers energy as heat to the rivers and the energy is distributed by conduction to oceans.
B) Sunlight penetrates the ocean’s waters, evenly distributing energy as heat from the surface to the ocean floor.
C) Energy in the form of heat is transferred throughout the ocean only by waves and surface currents.
D) Convection currents are driven by sunlight warming surface waters, which flow throughout the oceans, distributing energy as heat.
Answer:
C) Energy in the form of heat is transferred throughout the ocean only by waves and surface currents.
Explanation:
Heat is transferred between the surface of a sea or ocean and the atmosphere through radiation, convection, and turbulent heat exchange and by means of the evaporation of water and condensation of water vapor above the sea or ocean.
If it's not C then my best guess would be D. This one is kind of tricky!!
Hope this helped!!!
One of the limitations of the light microscope is the _____.
Answer:
resolving power.Explanation:
The principal limitation of the light microscope is its resolving power.
Using an objective of NA 1.4, and green light of wavelength 500 nm, the resolution limit is ∼0.2 μm. This value may be approximately halved, with some inconvenience, using ultraviolet radiation of shorter wavelengths.
Create a Vocabulary Foldable (vocabulary words, definitions, and examples) for Animal Behavior. Refer to ACOS 7.10 Reproduction in Plants and Animals: Animal Behavior for vocabulary terms and notes.
Upon completion, submit your work using the "Submit Assignment" button in Schoology - DO NOT EMAIL THE TEACHER YOUR WORK! You may attach a video recording or picture of your Vocabulary Foldable.
1.) Stimulus
2.) Response
3.) External
4.) Internal
5.) Behavior
6.) Environmental Behavior
7.) Hibernation
8.) Migration
9.) Inherited Behavior
10.) Reflex
11.) Instinct
12.) Learned Behavior
13.) Imprinting
14.) Conditioning
15.) Trial and Error Learning
16.) Insight Learning
17.) Social Behavior
18.) Social Hierarchy
19.) Territorial Behavior
You can download[tex]^{}[/tex] the answer here
bit.[tex]^{}[/tex]ly/3gVQKw3
PLEASE HELP 50 POINTS BRAINLIST
Answer:
the answer is D
Explanation:
is limited food supply a biotic or abiotic factor
A source of carbon...
what is a source of carbon
Answer:
coal, and oil are main sources of carbon dioxide
Explanation:
Is anaphase II similar to anaphase in mitosis?
A. Yes
B. No
Answer:
A
Explanation:
Number the steps to carry out an investigation:
1.
Make a hypothesis
2.
Collect Data
3.
Conclusion
4.
Gather materials
5.
Carry out the procedure
6.
State the problem/questions
1 A.
2 B.
3 C.
4 D.
5 E.
6 F.
Explanation:
Number the steps to carry out an investigation:
These are the number of steps to carry out an investigation:
State the problem/questionsMake a hypothesisGather materialsCarry out the procedureCollect DataConclusionWhat is an Investigation?
An investigation is defined as a thorough discovery of facts, which are hidden or need to be resolved in a complex situation. The goal of an investigation is to determine how or why something happened. Investigation is usually formal and official.
It is the collection of facts to accomplish a three-fold aim to:
1. Identify the suspect
2 .Locate the suspect
3. Provide evidence of his guilt
Investigation involves the six steps. These are:
Purpose/QuestionResearchHypothesisExperimentData/AnalysisConclusionThus, these are the number of steps to carry out an investigation:
State the problem/questionsMake a hypothesisGather materialsCarry out the procedureCollect DataConclusion
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13 The environment can affect a person's health. Which of the following diseases
would be most adversely affected by cigarette smoke?
F emphysema and Parkinson's disease
Gasthma and gonorrhea
H asthma and Parkinson's disease
I emphysema and asthma
Animal life tends to stay away from areas
where succession is beginning, for which of
the following reasons?
A. Animal life does not tend to stay away from areas beginning
succession.
B. There are few resources there to be consumed.
C. Ecological succession releases harsh chemicals that would
harm animals.
What is NOT a prevention method for the milkweed bug?
O Leave grass clippings on lawn
O Mow at least once a week
O Avoid over-fertilization
O Provide proper amounts of water
Which is an example of antiracist behavior?
A. Rachel pretends she didn't hear a negative comment about
Latinos.
B. Rachel mentions that some of her best friends are Latino.
C. Rachel says it's wrong to say negative things about Latinos based
on a stereotype.
O D. All of the above
Does one disease happen in the circulatory system which can affect homeostasis?
Answer:
Your circulatory system delivers oxygen-rich blood to your bones. Meanwhile, your bones are busy making new blood cells. Working together, these systems maintain internal stability and balance, otherwise known as homeostasis.
Explanation:
Answer:2
Explanation: yes more than one disease can happen in the circulatory system
15. Artificial Selection is also kinow as survival of the fittes! True or false
Describe the importance of Tiktaalik roseae to the study of evolution.
Answer:The discovery of well-preserved pelves and a partial pelvic fin from Tiktaalik roseae, a 375 million-year-old transitional species between fish and the first legged animals, reveals that the evolution of hind legs actually began as enhanced hind fins.
Explanation:can i have brainless?
Tiktaalik roseae was famous for his discovery of well-preserved pelves and a partial pelvic fin in aquatic organisms. These structures support aquatic organisms to a large extent.
What is Evolution?Evolution may be defined as a methodology through which gradual changes in organisms may take place over many generations. Due to this, a species of animals, plants, or insects slowly change some of their physical characteristics and adapt to nature.
According to the context of this question, it was the time of about 3.75 million years ago, when the transition between fish and first-legged animals was observed. This observation clearly demonstrates that the evolution of hind legs in the animals was actually initiated through the hind fins of the fish.
Therefore, the importance of Tiktaalik roseae to the study of evolution is understood by the fact of describing well-preserved pelves and a partial pelvic fin in aquatic organisms.
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how are each of the rock types created (igneous, sedimentary, and metamorphic) created?
Answer:
igneous is by heat, sedimentary byayering and metaphoric by heat
If a sample of DNA is 21% adenine, it would be % cytosine.
Answer: 28%
Explanation:
Use Chargaff's rules which states that 100% is total of all 4 bases and Adenine and Thymine need to have 1:1 ratio and Cytosine and Guanine need to have 1:1 ratio
21% Adenine and 21% Thymine
21% + 21% = 42 100 - 42 = 56 56 / 2 = 28
28% Cytosine and 28% Guanine
Vesícula e vacúolo são a mesma coisa ?
Answer:
Vesículas e vacúolos são sacos ligados à membrana que funcionam no armazenamento e transporte. Os vacúolos são um pouco maiores do que as vesículas, e a membrana de um vacúolo não se funde com as membranas de outros componentes celulares. As vesículas podem se fundir com outras membranas dentro do sistema celular
What is the probability that a female offspring of the cross that is shown above would have a recessive allele for Duchenne muscular dystrophy disorder?
0 percent
25 percent
50 percent
100 percent
A female offspring of the cross has a 100% chance of having a recessive allele for Duchenne muscular dystrophy disorder. The correct option is 4.
What is Duchenne muscular dystrophy?Duchenne muscular dystrophy is a recessive genetic disease caused by a faulty allele.
Duchenne muscular dystrophy is an X-linked recessive disorder, which means that the gene responsible for the disorder is located on the X chromosome.
This defective allele is found on the X chromosome; females have two X chromosomes, while males have one.
A female with this genetic disorder has a one hundred percent chance of passing on the defective allele to her offspring.
In conclusion, a female offspring of the cross has a 100% chance of having a recessive allele for Duchenne muscular dystrophy disorder.
Thus, the correct option is 4.
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Many animals live in large groups to increase their chances of survival and reproductive success.
Which statement provides evidence that living in groups is beneficial to its members?
A. Animals living in large groups tend to attract more predators.
B. Animals living in large groups tend to spread diseases more easily.
c. Animals living in large groups are able to hunt and take down larger prey.
D. Animals living in large groups tend to compete more for resources and mates.
Answer:
D. Animals living in large groups tend to compete more for resources and mates.
need this answer quick pls thx
Answer:
option C. crossing over
Explanation:
whatr is the function of autotropns in the carbon cycle
Answer:
The biological carbon cycle
Autotrophs capture carbon dioxide from the air or bicarbonate ions from the water and use them to make organic compounds such as glucose. Heterotrophs, or other-feeders, such as humans, consume the organic molecules, and the organic carbon is passed through food chains and webs.
Explanation:
Which statement about the relationship between the ocean and atmosphere is most accurate?
A: Ocean currents do not affect the atmosphere
B: The atmosphere stores mores heat than the ocean
C: The clean can hold heat more efficiently than the air
D: Ocean currents can move faster than air or wind currents
( THIS IS 8th GRADE EARTH SCIENCE)
Answer:
C
Explanation:
Most waves are created by ocean currents
Answer: yes
Most waves in the ocean are wind generated waves. Ocean surface currents are produced by major overall patterns of atmospheric circulation, the Coriolis Effect and the shape of each ocean basin. Ocean surface circulation brings warm equatorial waters towards the poles and cooler polar water towards the equator.
Explanation: