A theory that stands the test of time and becomes the basis for a field of stud
A theory that stands the test of Tim sand becomes the basis for a field of study is paradigm
Answer:
The correct answer will be- paradigm
Explanation:
A paradigm is a conceptual view of the world which is composed of classic experiments, trusted methods and the theories.
A scientific paradigm is accepted which explains the natural phenomenon and later its scope is expanded by new theories, data and a new measure of standards.
In the given question, since it becomes the basis of the field indicates that it has scope to extend with time with new theories and data therefore, the correct answer is a paradigm.
Wind that blows from land to offshore causes
It causes a sea breeze
Oxygen gas production will happen within me what am i
Answer:
The answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplast
Explanation:The answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplast
Explanation:The answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplast
Explanation:The answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplast
Explanation:The answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplastThe answer is chloroplast
Explanation:
The object you're describing is a plant. Plants produce oxygen through a process called photosynthesis, which transforms carbon dioxide and water into glucose and oxygen using sunlight.
Explanation:The object that produces oxygen gas within itself is a plant. This is a process known as photosynthesis, wherein plants convert carbon dioxide and water into glucose and oxygen gas using sunlight. In this way, plants not only produce the oxygen necessary for animal and human life but also provide food resources indirectly.
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Which word identifies the agent that carries the energy released from earthquakes? Epicenter focus lithosphere waves
The correct answer is - waves.
When there's an earthquake, it means that there's a big shock deep inside the ground where a large amount of energy is released, This energy, since it is inside of the Earth, is transferred through the crust in the shape of waves, or rather, seismic waves. The bigger the stress inside the Earth, the more intense the seismic waves, and vice versa, the lesser the stress, the lesser the intensity of the waves. There's special scales that are measuring the frequencies of this waves, and some of the most popular in usage are the Richter scale, and the Mercalli scale.
How is light energy converted into chemical energy during photosynthesis?
Light energy from the sun is captured by the chlorophyll
or
phase of photosynthesis where light energy is converted to chemical energy in the form of ATP and NADPH; results in the splitting of water and the release of oxygen; takes place in the thylakoid membranes
30 Points 4 Questions Marine Science
1. All of the following are true of surface currents except
a. influenced by wind
b. exist in large lakes
c. are found in the top 1,300 feet of the ocean
d. have the same movement as thermohaline currents
2. A water molecule's shape resembles which of the following?
a. oval
b. circle
c. square
d. triangle
3. Much of the earth's heat is retained in the
a. crust
b. wind
c. oceans
d. mountains
4. Most hurricanes will originate
a. near the North Pole
b. in the equatorial region
c. when the water and air are cold
d. below the ocean's surface current
Option D is correct.
d. have the same movement as thermohaline currents
Explanation:The movement of the surface water of the ocean due to the certain pattern of wind and Coriolis Effect and earth spin creates surface currents. That are influenced by all of the above three except the fourth one.
Answer 2:Option D is correct.
d. triangle
Explanation:Water molecules are not linear in shape. Oxygen has 8 electrons in its valence shell so there are two bonding pairs in water and two lone pairs. Lone pairs strongly repel each and water molecules get bent shape due to this.
Answer 3:Option C is correct.
c. oceans
Explanation:We just do not know that how much heat is captured in the oceans. Most of the heat dissipates in the atmosphere is absorbed in the oceans. So, most of the heat is retained in oceans.
Answer 4:Option B is correct.
b. in the equatorial region
Explanation:Hurricanes begin as the warms storms in tropical regions of due to the warm moist water of Atlantic and Pacific Oceans near the equator. So the correct option is B.
The odd statement is b. exist in large lakes
Explanation:Surface currents are generated largely by wind. Their patterns are determined by wind direction,Earth's rotation, and the position of landforms that interact with them. Currents may also be generated by density differences in water masses caused by temperature and salinity variations but they are not present in the form of lakes
The shape of H2O molecule is oval
Explanation:It is not completely oval but irregular A molecule of water has an angular or bent shape. The H-O-H bond angle in a molecule of water is 104.5o, an angle that is also quite close to the 109.5o bond angles of methane so we can say that it is a little bit oval plus triangular too.
Much of the earth's heat is retained in the oceans
Explanation:Earth retains its temperature in water cycle and we know that water cycle is mostly dependent upon the ocean. Although winds are also responsible but mostly it is retained by oceans. Similarly the constant exchange of energy between the Earth's surface and the greenhouse gases is what enables the planet to maintain its average temperature of 15 degrees Celsius.
Most hurricanes will originate in the equatorial region
Explanation:A hurricane needs the warm water of the tropics, which feeds a storm with energy, in order to form. Most of them are originated in the African continent and that is why we can say that they originate from the equatorial region because much part of Africa lies in equator.
Please answer this as soon as possible, would really help!! Will give brainliest!! (60 Points)
~Biology~
What is the general relationship between how complex and animal's nervous system is and how complex its sensory system is?
Nervous system for an animal is the part of an animal's body that coordinates its behavior and transmits signals between different body areas.The sensory system relies on specialized sensory receptor cells that transduce external stimuli into changes in membrane potentials.
Using what you know about cell communication, explain the difference between intercellular and intracellular communication
In biology, cellular communication is a term used to determine distinct kinds of methods of communication among the living cellulites. Of these intercellular communication signifies the communication between the cells. In this kind of communication, membrane vesicle trafficking plays an essential role in both humans and animals.
On the other hand, intracellular communication signifies towards the communication of the organelles in order to sustain cellular homeostasis.
Which of the following statements is true regarding specialization among cells?
a. All cells specialize to some degree.
b. Specialization leads to greater autonomy among cells.
c. Specialized cells may lose the ability to reproduce.
d. Less complex organisms are more likely to have specialized cells.
Answer:
The correct answer will be option-C.
Explanation:
Specialization is the fundamental property of the multicellular organism which is related to the complexity of the organism. The specialization can be exhibited by unicellular organisms like bacteria to form biofilms.
This specialization in the multicellular organism becomes permanent through the process of differentiation. Cells attain a particular function depending on the environment they are present as well as the signals from the adjacent cells. The cells work in cooperation and lose the ability to divide and reproduce after they get differentiated to perform a function.
Thus, Option-C is the correct answer.
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2. There is one of each type of unconformity in this diagram. Name at least one of each of them by indicating the layers that they are between.
Nonconformity:
Answer:
Type your answer here.
Angular unconformity:
Answer:
Type your answer here.
Disconformity:
Answer:
Type your answer here.
Hi,
There is one of each type of unconformity in this diagram. Name at least one of each of them by indicating the layers that they are between.
Nonconformity exists between most metamorphic and sedimentary rock.
Angular unconformity exist mostly with sedimentary rock.
Disconformity exists also between sedimentary rock
In geology, unconformities are contacts between two rock layers that indicate periods of stopping, erosion, and resuming of deposition. Nonconformity occurs between sedimentary and igneous or metamorphic rock, Angular unconformity between new strata and older, tilted or folded strata, and Disconformity between two parallel sedimentary layers with a time gap.
Explanation:In geology, an unconformity is a contact between two rock layers that are not parallel to each other. They indicate a period of geological time when deposition stopped, erosion removed previously formed rocks, and then deposition resumed. There are three main types of unconformities - Nonconformity, Angular unconformity, and Disconformity.
A Nonconformity occurs when sedimentary rock sits on top of igneous or metamorphic rock. For instance in a diagram, this could be between layer C (sedimentary) and layer D (igneous).
Next, an Angular unconformity happens when new strata lies on top of older, tilted, or folded strata. For example, this could be between layers B (tilted) and C (horizontal).
Lastly, a Disconformity refers to a gap in time between two parallel layers of sedimentary rock, perhaps between layers A (older) and B (younger) if there is a gap in time.
Remember that these are all case-dependent and the types and structures would depend largely on the specific diagram provided.
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A physical property of gold is its a. Density. C. Non-flammability. B. Reactivity with powerful acids. D. None of the above Please select the best answer from the choices provided A B C D
Answer:
Option A is correct.
A. Density.
Explanation:Physical properties are those that can be observed without changing the identity of the substance. The general properties of matter such as color, density, hardness, are examples of physical properties. Flammability and corrosion/oxidation resistance are examples of chemical properties.
Cellular respiration is different than breathing because?
A. It involves an exchange of oxygen and carbon dioxide
B. It involves a chemical reaction
C. It occurs in all living things
D. It releases carbon dioxide as a waste
Most enzymes fall into which group?
A. isomerases
B. hydrolases
C. lyases
D. transferases
Lyase enzymes is the enzyme class with the most enzymes since it contains more types of reactions, etc.
Hope it helped,
BioTeacher101
A chlorine atom that has 17 protons and 18 neutrons is calls
This is a neutral atom of chlorine.
How is the nitrogen cycle important to humans?
A. It produces free nitrogen that humans can breathe.
B. It converts nitrogen into a form that humans can obtain by eating other organisms.
C. It produces nitrogen compounds that humans can breathe.
D. It converts nitrogen into a form that humans can obtain by absorbing it through their skin.
B.
Nitrogen is a very important element to all living organisms, and the nitrogen cycle provides nitrogen in a form usable by humans, which is obtained by eating other animals.
Hope it helped,
BioTeacher101
Nitrogen cycle is important to humans because it converts nitrogen into a form that humans can obtain by eating other organisms.
NITROGEN CYCLE:
Nitrogen cycle involves the manner by which nitrogen is recycled in the environment i.e. from the soil to the atmosphere and vice versa. Nitrogen is fixed by bacteria present in the root nodules of leguminous plants. The plants absorb nitrogen in form of nitrates. Human beings benefit from this process when they feed on organisms like plants that have converted nitrogen to a usable form. Therefore, nitrogen cycle is important to humans because it converts nitrogen into a form that humans can obtain by eating other organisms.Learn more at: https://brainly.com/question/23603107?referrer=searchResults
Why does
culture establish the standard by which quality of life is measured
Answer:
Culture establishes the framework in which individuls judge their environment.
Explanation:
Quality of life is the concept sorrounding all aspects of a persons life and focus on that person's needs as well as the way they are satisfied in its environment. But there is a bias in it, because while a person living in a country that offers it a lower standard of living can perceive it has the best quality of life without universal healthcare, free access to education, and a big market of employment. That person can believe that it has the best quality of life. Even though are countries with better standard of living. So, quality of life is a subjective cultural construction built by a society perception. That becomes objective and universal when is compared to different countries.
Which statements correctly describe mutations in gametes and mutations in somatic cells?
Mutations to somatic cells will be inherited by an organism's offspring.
Mutations to gametes can be passed on to an organism's offspring.
Mutations to somatic cells are only present in the type of cell in which the mutation occurred.
Mutations to gametes are more likely to be beneficial than mutations to somatic cells.
Mutations to gametes do not involve changes in the DNA.
Mutations to somatic cells are transferred to daughter cells.
Select all that Apply
A mutation is a rare, accidental or induced modification of genetic information (DNA or RNA sequence) in the genome.
The consequences of a mutation vary according to the part of the genome affected. A mutation is said to be hereditary if the mutated genetic sequence is passed on to the next generation.
In multicellular animals, germline mutations can be transmitted to offspring, whereas somatic mutations do.
Somatic mutations do not affect cells intended for reproduction, so they are never hereditary:
* Post-zygotic mutations are the mutations that appear in the egg after fertilization. They are rarer and are expressed as mosaic in the individual concerned (the mutation will be present only in the daughter cells originating from the mutated embryonic cell).
* Mutations can appear throughout life on the DNA of any cell; they are then transmitted to the line of the daughter cells. These can, in some cases, become tumor cells and then form cancer.
Mutations in gametes can be inherited by offspring, while somatic cell mutations are confined to the specific cells and their daughter cells. Also, somatic cell mutations can be transferred to daughter cells but are not inherited by the next generation. These differences highlight the significance of each type of mutation. Option C , F and B are correct .
Mutations can occur in two main types of cells: gametes (sex cells) and somatic cells (body cells). Here are the correct statements that describe these mutations:
Mutations to somatic cells are only present in the type of cell in which the mutation occurred. These mutations are confined to just the specific cell and its daughter cells and cannot be passed on to offspring. [ C] Mutations to somatic cells are transferred to daughter cells. During mitosis, when a somatic cell divides, the mutations are copied and passed to the resulting daughter cells. [ F] Mutations to gametes can be passed on to an organism's offspring. Because these mutations occur in the sex cells, they can be inherited by the offspring if fertilization occurs. [ B ]Mutations in gametes are significant because they can be transmitted to the next generation, potentially affecting every cell in the offspring. In contrast, mutations in somatic cells are limited to the specific cell and its progeny and do not affect the organism's offspring.
Complete question :
Which statements correctly describe mutations in gametes and mutations in somatic cells?
A. Mutations to somatic cells will be inherited by an organism's offspring.
B. Mutations to gametes can be passed on to an organism's offspring.
C. Mutations to somatic cells are only present in the type of cell in which the mutation occurred.
D. Mutations to gametes are more likely to be beneficial than mutations to somatic cells.
E. Mutations to gametes do not involve changes in the DNA.
F. Mutations to somatic cells are transferred to daughter cells.
How does the structure of the plasma membrane allow materials to move across it in both directions?
The greater the force exerted on the ball, the greater the acceleration of the ball. This is an example of a scientific ___________; a statement that describes, predicts, and/or explains why things behave as they appear to in the natural and physical world.
29 POINTS, NEED ASAP PLEASE
Classify the characteristics by whether they describe plants only, fungi only, or both plants and fungi.
Answer:
In plants only: May produce seeds, can photosynthesize
In fungi only: heterotrophic, may have aseptate hyphae
In Both: can absorb nutrients from the soil, may have rhizomes, have cell walls
Explanation:
Plants are unicellular organism that reproduces using seeds as it performes sexual mode of reproduction. Plants are autotrophic in nature and make food using sunlight, carbon dioxide and water
The fungi absorbs nutrition from the other organism and performs heterotrophic mode of nutrition and have aseptate hyphae.
Plants and fungi both absorbs the nutrients from soil and contain cell wall. The cell wall of plants is made of cellulose and in fungi it is made of chitin.
How do mutations lead to variation
A. By giving organisms new features for survival
B. By producing changes in the genetic code
C. By signaling proteins to be synthesized
D.By providing a source of energy for cells
Hi!
Question - How do mutations lead to variation
Answer - B. By producing changes in the genetic code
Why - "In which can create entirely new alleles in a population"
By producing changes in the genetic code, mutations lead to variation. The correct option is B.
What is mutation?A mutation is a transition in an organism's DNA sequence. Mutations can occur as a result of errors in DNA replication during cell division, mutagen exposure, or viral infection.
As they result in changes in the genetic code, it leads to variation.
Thus, the correct option is B.
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Plant cells have which of the following characteristics? Select all that apply.
1. cleavage furrows plus centrioles in cell division
2. cell walls and plasma membranes
3. large hypertonic vacuoles
4. chloroplasts
Answer:
Options (2), (3), and (4).
Explanation:
Plant cells are eukaryotic cells, in which membrane-bound organelles, such as nucleus and mitochondria are present. Each plant cell is covered by a cell wall that provides shape and protection to the plant cell. A plasma membrane is present under the cell wall which separates interior of the cell from external environment.
Plant cells also possess chloroplasts that help in photosynthesis and large central vacuoles that act as storage organelles and store food. On the other hand, centrioles are absent in plant cells.
Thus, the correct options are 'options (2), (3), and (4).'
Plant cell characteristics include having cell walls and plasma membranes, large central vacuoles, and chloroplasts. They do not have cleavage furrows and centrioles during cell division, which are more characteristic of animal cells.
Explanation:Plant cells display key characteristics that set them apart from animal cells. Regarding the choices provided:
Cleavage furrows and centrioles in cell division are characteristic of animal cells not plant cells. Instead, plant cells utilize a cell plate during cytokinesis (cell division).Plant cells indeed have cell walls and plasma membranes. These provide structural support and regulate the movement of substances in and out of the cell.Plant cells typically have one or more large central vacuoles that can store water, nutrients, and waste products.Plant cells also contain chloroplasts, which are solely responsible for photosynthesis - the process by which plants convert sunlight into energy.Learn more about Plant Cell here:https://brainly.com/question/33410866
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The _______ is the layer of the atmosphere in which weather occurs. A. Thermosphere B. Exosphere C. Mesosphere D. Troposphere
this is the Troposphere
Answer:
The correct answer option is D. Troposphere.
Explanation:
There are four main types of atmospheric layers on the Earth: troposphere, stratosphere, mesosphere, thermosphere.
The lowest atmospheric layer of the Earth is called Troposphere. It is the layer where all the weather conditions take place and it extends from the surface of the Earth to almost 12 km upwards. We all live in this layer and it has all the air that we breathe in.
Locard’s exchange principle is best described as
A) No two pieces of evidence have any similar markings
B) A scientific experiment has been generally accepted by experts
C) Evidence at a crime scene should be replaced with evidence from the victim’s home
D) There is a transfer of evidence when two objects come into contact with each other.
d. Hope this helped, I love criminal justice :)
Locard's exchange principle refers to option D) the transfer of evidence when two objects come into contact, which is a fundamental concept in forensic science used to link suspects to crime scenes.
Explanation:The correct answer to the student's question regarding Locard's exchange principle is option D) There is a transfer of evidence when two objects come into contact with each other. This principle is a cornerstone of forensic science and underlines the importance of trace evidence at a crime scene. It postulates that whenever two objects interact, there is always an exchange of material between them. This can include DNA, fibers, hair, soil, or residues that can be used to link a suspect to a crime.
The principle can be likened to basic concepts in chemistry and physics, where interactions between particles are observed and measured to build theories about the properties that cannot be directly observed. Likewise, the interactions at a crime scene are detailed through the evidence picked up and the transfer of particles as suggested by the principle. It's an intuitive concept that reinforces the idea that the perpetrator of a crime will both bring something into the crime scene and leave with something from it. This principle is essential in the analysis and linking of suspects to crime scenes.
which best describes the structure of the molecules that make up proteins?
Proteins are made up of monomer units connected together. These units are called amino acids. Each amino acid has a carbonyl group and an amine group. These two groups will link when the amino acids are added. Also, an amino acid has a specific R group that characterizes which type of amino acid it is.
Hope this helps.
Proteins are made of amino acids with a basic structure having amino group (−NH2), an acidic carboxyl group (−COOH), and an organic R group (which is different in each amino acids).
What are proteins?"Proteins are made up of repeating amino acids joined by a peptide bonds."These are the also known as building blocks of life.Proteins acts as hormones, enzymes and antibodies.It is found in all living organisms.What are amino acids?It is a structural and functional unit of proteins.Enzymes can break proteins into amino acids.Each amino acids have a amino group (−NH2), an acidic carboxyl group (−COOH), and an organic R group. The organic R group is different in each amino acids.Hence, the structure of proteins are best describe if we know the structure of present amino acids.
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Arthritis and other similar diseases can cause a narrowing of the spinal foramen. The images below show a healthy spine and a spine with a narrow foramen.
Which symptom would an individual with a narrow foramen most likely experience?
A. poor posture from loss of tendon attachment sites
B. back pain from the compressed nerves
C. increased flexibility from the constriction of muscle
D. lower blood pressure from increased blood flow
The right answer is B. back pain from the compressed nerves
Narrow cervical canal symptoms can range widely from no symptoms to gait and balance disorders to radiculaglia when there is foraminal narrowing associated with central narrowing. Discrete balance disorders may be early signs of myelopathy (posterior cords). Later, the patients suffer from proximal weakness and paresthesia of the four limbs, as well as disorders of the fine motor skills of the hands (do not manage to close buttons of shirt, difficulties with the writing, etc., on reaching the lower motor neuron). In more advanced stages, gait disturbances and even later sphincter control disorders may occur (upper motor neuron involvement).
fossils layers 175 mya, 250 mya, 400 mya, 450 mya
450 mya, is where you would find fossils.
Explanation:
The first layer would be newer organismis that haven't quite decayed yet.The second and third layer is where the bones of the dead organasims lie, they havent quite been through the whole process yet, but they are nearly complete just about 100,000 years left.The fourth layers have been through alot, and have been there for many many years we can say abot 100,000,000 years.They are ready to become a fossil fuel.
Fossils found in various sedimentary layers of rock help us date and understand the history of life on earth. The Law of Superposition states that these layers are oldest at the bottom and younger moving upwards. By looking at fossils from different periods, we can trace the evolution and diversity of organisms.
Explanation:The student's question pertains to the ages of various fossil layers. To understand this, we need to apply the Law of Superposition, first proposed by Nicolas Steno, which states that in sedimentary rock layers, the oldest layer is at the bottom and the layers get progressively younger moving upwards. Thus any fossils found in these layers enable us to date and understand the age and history of life on Earth.
For instance, fossils of Trilobites, extinct arthropods, were found in layers dating to the early Cambrian period (525 mya) and disappeared after the Permian period (250 mya). Similarly, the fossilized structure of Stromatolites, colonies of photosynthetic bacteria, represent the oldest known fossils, dating back more than 3 billion years. From layers dating 175 mya, 250 mya, 400 mya, and 450 mya, we can see how animals and organisms have evolved and diversified.
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The following image is a pedigree for a family with the genes for cystic fibrosis, which is an autosomal recessive trait.
If the dominant allele is represented by A and the recessive allele is represented by a, what would be a possible genotype and phenotype of individual II.3?
A. Genotype: AA
Phenotype: carrier
B. Genotype: aa
Phenotype: unaffected
C. Genotype: AA
Phenotype: unaffected
D. Genotype: Aa
Phenotype: affected
The possible genotype of individual II.3 is AA, and its phenotype is unaffected. Thus, the correct option is C.
What is Genotype?Genotype may be defined as the ultimate combination of alleles of those genes which are selected for a specific study.
Both the parents are the carriers of the cystic fibrosis disorder, so, both of them have the genotypes of Aa, but the disorder is autosomal recessive, so it occurred when the genotypes are aa.
The parents with genotype Aa produce offspring with the genotypes AA, Aa, and aa. In which AA must be unaffected and normal, Aa must be unaffected but the carrier and aa must be affected by the disorder.
Therefore, the correct option for this question is C.
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The nucleus is a structure that surrounds a cell and helps control what enters and exits the cell.
The nucleus is the cell's control center, housing the genetic instructions. Enclosed by a nuclear envelope, it regulates transport of material into and out of the nucleus. However, not all cells contain a nucleus.
Explanation:The nucleus is a crucial component of a cell, often considered its control center because it houses the cell's genetic instructions or DNA. This genetic material determines the entire structure and function of the cell.
The nucleus is enclosed by a double membrane known as the nuclear envelope that assists in regulating the transport of materials, like ions and molecules, in and out of the nucleus through nuclear pores. Inside the nucleus, the semi-solid fluid is known as nucleoplasm, where we find the chromatin and the nucleolus.
Interesting to note, not all cells contain a nucleus. Some cells, such as mammalian red blood cells, do not contain nuclei. In contrast, muscle cells might contain more than one nucleus, a condition known as multinucleated.
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Which choice regarding DNA replication is true? a mistake in Dna replication never occurs b A change in amino acid sequence is inherent in mistake in DNA replication c mistake in DNA replication are a mechanism evolutionary change d mistake in DNA replication are a direct respond to the organism's environmental cues
Mistakes in DNA replication can lead to mutations, which are a mechanism of evolutionary change. DNA replication is highly accurate, but when errors occur and are not corrected, they can result in a change in the amino acid sequence and be inherited if present in germ cells.
Explanation:Among the options provided regarding DNA replication, the true statement is that mistakes in DNA replication are a mechanism of evolutionary change. DNA replication is a highly accurate process, however, errors during replication do occur, albeit infrequently (approximately once for every 10 billion nucleotides). Although many mistakes are corrected by repair mechanisms, some uncorrected errors lead to mutations. These mutations can be passed on to offspring if they occur in germ cells, such as sperm or eggs, and they can result in a change in the amino acid sequence of proteins. This process is one of the drivers of evolutionary change, allowing populations to adapt over time to new environments and conditions.