They created a key speculation for the shape of DNA. (They did now no longer carry out experiments themselves; they created a accurate speculation the usage of statistics from a couple of sources.)
Watson and Crick evolved their thoughts approximately genetic replication in a 2d article in Nature, posted on May 30, 1953. The had proven that during DNA, shape is function: the double-stranded molecule may want to each produce genuine copies of itself and deliver genetic instructions.
Taken in 1952, this picture is the primary X-ray image of DNA, which caused the invention of its molecular shape through Watson and Crick. Created through Rosalind Franklin the usage of a method referred to as X-ray crystallography, it found out the helical form of the DNA molecule.
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(q022) genes in eukaryotic cells often have intronic sequences coded for within the dna. these sequences are ultimately not translated into proteins. why?
The spliceosome, which operates in the nucleus, removes intronic sequences from RNA molecules.
What prevents intron translation?
Because they are spliced out during RNA splicing, introns are not regarded as untranslated regions. The introns are thought of as non-protein-coding RNA as they are not a part of the mature mRNA molecule that will be translated.
Intronic sequences are eliminated from RNA molecules by the spliceosome, a cell's nucleus-based enzyme.
Therefore, Intronic sequences are frequently codified in the DNA of genes in eukaryotic cells.
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what are the independent,dependent, and controlled variables
HELP ASAP DUE TONIGHT
Answer:
simple: prokaryote
no nucleus: Prokaryote
complex: Eukaryote
plasma membrane: ?
cytoplasm: both
unicellular: prokaryote
the kind of cell that make up multicellular organisms: I want to say eukaryote?
has membrane bound organelles: eukaryote
contains DNA: both
no organelles: ?
ribosomes: both
Explanation:
sorry for the ? ones I want to say plasma membrane is Prokaryote but I'm not 100% sure I can get you atleast a 70%
The population density of a certain 750 square mile area in 1980 was 1077 people per square mile. In 1990, the population density was 1137 people per square mile. In 2000, the population density was 1144 people per square mile. In 2010, the population density was 1193 people per square mile. What was the population of this area in 1980?
A. The population was 807240 people.
B. The population was 807590 people.
C. The population was 807750 people.
D. The population was 807710 people.
Answer:
c the population was 807,750
Explanation:
750×1077=807,750
Question: Density is a measure of how much heat there is in a volume of a substance. True or false?
What is the difference between chronological age and physiological age?.
The amount of years since someone was born is referred to as their chronological age. Mental functionality and personality changes as we age are considered to be a part of psychological aging.
The time from your birth up until the specified date is considered to be your chronological age. It represents your age in years, months, days, etc. People typically define their age in this way. Additionally, it is a major contributor to mortality, chronic diseases, and other physical function deficits, including hearing and memory loss.
A person's capacity on several levels of mental or cognitive functioning, such as self-esteem and self-efficacy, as well as learning, memory, and perception, is referred to as their psychological age. Exercise science research is currently heavily focused on the idea of psychological age and how it relates to the quality of life.
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what is the normal resting ph for arterial blood? for muscle? how are these values changed as a result of exhaustive sprint exercise?
Lactic acid production is basically responsible for the change in pH.
What is pH?
The pH scale, which previously stood for "potential of hydrogen," is used to describe how acidic or basic an aqueous solution is. The pH values of acidic solutions are lower than those of basic or alkaline solutions.
The arterial blood pH is 7.4 at rest. It is 7.1 for muscle. During a strenuous sprint workout, muscle glycolysis produces a lot of lactate and H+, which lowers the pH of the muscle to less than 6.7 and the blood pH to around 7.1.
Hence, lactic acid production is basically responsible for the change in pH blood pH drops to 7.1 and muscles drop to 6.7.
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During translation, what is read to determine the type of amino acid that is added to the growing protein?.
The proofreading or read of type of amino acid is based on codon on mRNA and anti-codon on tRNA.
The final step of the translation process is frequently translation proofreading. After a piece has been translated, proofreaders carefully go through and modify it to find any flaws.
Despite the fact that most translations are now automated, proofreading still calls for human involvement. This is because, despite their ability to speed up turnaround times, machine translations are not error-free.
Therefore, before delivering a translated document to a client, translation agencies use separate teams of proofreaders to conduct multiple reviews of the translation.
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explain which organisms would be negatively affected and why if the Acacia primary producer went extinct.
The organisms that would be negatively affected if the Acacia primary producer went extinct are all organisms of the trophic chain (not only herbivores) because the elimination of producers in the ecosystem will irreversibly alter the community.
What is the specific role of producer organisms in the ecosystem?Producer organisms play a fundamental role in the ecosystem because they sustain all the trophic levels of the chain by providing biomass that is first used by herbivores to sustain this trophic level and then carnivores in the next trophic level.
Therefore, with this data, we can see that the specific role of producer organisms in the ecosystem is pivotal in the sense they are providing all biomass that is converted into energy by the next levels in the chain and therefore extinction of these organisms will lead to the collapse of the ecosystem.
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a man with normal vision who is a dwarf due to achondroplasia has children with a woman with colorblindness who is of average height. dwarfism caused by achondroplasia is autosomal dominant, and red-green color blindness is x-linked recessive. what proportion of their daughters are expected to be color-blind with achondroplasia?
The proportion of their daughters who are expected to be color-blind with achondroplasia is none.
Men with X-linked recessive disorders always pass the altered gene to their daughters, who become carriers. However, if he has his X-dominant condition, his daughter will be affected. The gene responsible for color blindness is on her X chromosome. In other words, red-green color blindness is an X-linked recessive disorder.
If a woman inherits the normal color vision gene and the mutated gene she will not develop red-green color blindness, as this is a recessive trait. If a colorblind man marries a homozygous woman who is colorblind, there is zero chance that his son will be colorblind. Color blindness is a recessive sex-related trait in which the eye is unable to distinguish between red and green colors.
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How many exercises encompass stretching in the human body? a. eight b. too many to count c. that depends one each individual d. none
Answer:
b
Explanation:
that is the answer to the question
a large rainstorm causes flooding and wipes out 87% of a small population of beetles. the remaining population has much lower genetic variation than the original population, and is not in hardy-weinberg equilibrium. which evolutionary mechanism has most likely acted on this population?
Whether or not they have adaptive value, mutations increase the genetic diversity of a population.
How does genetics work?The examination of genes and heredity, or how particular characteristics or behaviors are carried through offspring to parents as a result of variations in DNA sequence, is known as genetics. A gene is a section of DNA that has the instructions needed to create one or maybe more molecules that support bodily function.
What factors are genetic?A single gene mutation (monogenic disorder), numerous gene mutations (multifactorial inheritance disorder), a mix of gene mutations and environmental variables, or destruction to chromosomal (changes in the number or structure of complete chromosomes) can all result in genetic illnesses.
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Do you think risk assessment would be a better strategy for a prey animal than frequent vigilance? explain your reasoning.
Yes, the risk assessment would be a better strategy for a prey animal than frequent vigilance.
When assessing their risk, the prey would be aware of its surroundings and look for warning indicators, like the presence of a predator. They increase their alertness when they detect a risk so they can respond to the danger.
Contrarily, persistent vigilance refers to an animal's ongoing alertness and readiness for danger. Even though risk assessment could make an animal more likely to get eaten by a predator, it also conserves energy by only alerting the prey to danger when it actually exists.
Prey animals that use risk assessment generally benefit compared to those that require constant vigilance since the energy they save can be used for other activities such
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The structure that is an oval-shaped area in the diencephalon located at the superior end of the brainstem beneath the cerebral hemispheres is the.
The structure that is an oval-shaped area in the diencephalon located at the superior end of the brainstem beneath the cerebral hemispheres is the thalamus.
What is thalamus?
Your brain's thalamus is an egg-shaped structure located in the center. It serves as a relay station for all incoming hearing, taste, sight, and touch (but not smell) sensory information from your body to your brain. All information must first pass through your thalamus, which functions as a relay or railway station, before being routed or directed to the cerebral cortex, the outermost layer of your brain, for additional processing and interpretation.
Thalamus serves a variety of purposes, such as:
transmitting sensory data. bringing information into your brain in the form of nerve signals from all of your senses—taste, touch, hearing, and sight—except smell.A thalamic nucleus is responsible for processing and transmitting information from each sensory function to the corresponding region of your cerebral cortex.relaying information about movement (motor). Your thalamus is the hub of all motor pathways, just like it is for sensory information.Organizing our focus. Out of all the information your thalamus gets, it helps determine what to concentrate on.function in consciousness Your thalamus contributes to your ability to stay awake and aware.play a part in memory and thinking (cognition). Your limbic system, which is involved in processing and regulating emotions, is related to your thalamus.Hence, The structure that is an oval-shaped area in the diencephalon located at the superior end of the brainstem beneath the cerebral hemispheres is the thalamus.
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a population was scored for the mn blood type locus. there were 134 type m, 370 type mn, and 174 type n individuals in the population. calculate the frequency of the m allele in this population.round your answer properly to four decimal digits.
The proportion of the population carrying the m allele. Image transcriptions: DCO t R H cool red calm 0: 0072 R F, 0.4640 0.3803.
How would you define blood?Solids and liquids make up your blood. Plasma, the liquid component, is composed of proteins. Your blood contains more than 50% plasma. Red blood cells, white blood cells, & platelets make up your blood's solid portion. Your tissues and organs receive oxygen from your lungs through red blood cells.
How come blood is red?Hemoglobin, an oxygen-carrying protein, is present in RBCs. Hemoglobin absorbs oxygen in the lungs, giving blood its vivid red color.
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What is another name for programmed cell death, which occurs during normal development of a multicellular organism?.
Consequently, this process is known as programmed cell death, while apoptosis—a word from Greek that means "falling off," as in leaves—is the name given to it more frequently.
What exactly does "programmed cell death" mean?PROH-grammed with the word "death" a form of cell death where a cell is killed through a succession of molecular events. One technique the body employs to get rid of unwanted or abnormal cells is this one. In cancer cells, the process of programmed cell death may be obstructed. also known as apoptosis.
Quiz about 'programmed cell death':A series of particular cellular events that are part of programmed cell death cause the cell to die and be destroyed. unless given survival signals, the default setting for cells. Enzymes called caspases, which become active during apoptosis.
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as nadya begins her lesson, stefan learns that the nervous system is divided into subdivisions, including the nervous system, which allows us to react to our external environment.
As Nadya begins her lesson, Stefan learns that the nervous system is divided into subdivisions, including the nervous system, which allows us to react to our external environment. Nerve.
The nervous system consists of the mind, spinal wire, and a complex community of nerves. This machine sends messages back and forth among The central frightened system (described as the brain and spinal twine) and is generally considered to have seven basic elements: the spinal cord, the medulla, the pons, the cerebellum, the midbrain, the diencephalon, and the cerebral hemispheres
The nervous system performs a function in almost every issue of our fitness and well-being. It guides normal sports along with waking up; computerized activities along with respiration; and complicated processes along with questioning, reading, remembering, and feeling feelings. The fear system controls brain boom and development.
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Which stage of atmospheric evolution is characterized by conditions rich in water vapor and carbon dioxide?
O atmosphere I
O modern atmosphere
O atmosphere II
O atmosphere III
Atmosphere II stage of atmospheric evolution is characterized by conditions rich in water vapor and carbon dioxide
What is atmospheric evolution ?There are numerous feedback processes involved in atmospheric evolution, making it an inherently interdisciplinary problem that necessitates a "Earth system" approach. Because of this, progress cannot be made by focusing only on one area of science or one region of the Earth.
The absence of primordial atmosphere indicates the initial stage. The second stage saw the atmosphere evolve in response to the earth's hot interior. Last but not least, photosynthesis is a mechanism through which the living world alters the makeup of the atmosphere.Learn more about Atmospheric evolution here:
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Why is it more difficult to treat fungal infections than bacterial infections in humans?.
In humans, fungal infections are more challenging to treat than bacterial infections because they may cause damage to the human body.
Any disease caused by a fungus is called a fungal infection. A fungus that invades the tissues can cause a disease that is confined to the skin, spreads into tissue, bones, and organs, or affects the entire body.
A bacterial infection occurs when bacteria enter the human body through a cut or any opening in the skin, increase in number, and cause a reaction in the body.
Fungi are more challenging than bacteria to treat without damaging the human because eukaryotic animal cells and fungal cells share many basic cell structures and machinery. This can cause off-target drug effects that may manifest as serious side effects in humans.
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In the somatic cell of a mammalian female, one of the two x chromosomes is randomly inactivated and condensed, resulting in the formation of a.
All of the following are factors that affect population growth rate except
Answer:
What is "all of the following"
What are enzymes attachment sites called?.
The enzyme energetic website online is the binding web page for catalytic and inhibition reactions of enzyme and substrate; the shape of the active website and its chemical function is precise for the binding of a selected substrate.
Enzymes with websites are known as allosteric enzymes. they are an allosteric website and lively web page. An Allosteric website is part of an enzyme to which a specific effector or modulator can be connected.
This stabilization hastens reaction fees and makes them manifest at physiologically widespread charges. Enzymes bind substrates at key places in their shape known as active websites. they're usually highly specific and simplest bind certain substrates for certain reactions.
No longer do all enzymes own websites for allosteric binding; people who do are known as allosteric enzymes. Allosteric enzymes usually contain more than one protein subunit. Ligands that bind to allosteric enzymes and affect binding at an exclusive web page at the enzyme are referred to as effectors.
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what is one way we can generalize about the archaic homo sapiens? group of answer choices they were found only in europe and asia. they dated to the late pliocene. they show a mixture of homo erectus and homo sapiens traits. they are usually found with oldowan stone tools.
Compared to Homo erectus, archaic Homo sapiens had smaller brow ridges, a less protruding face, and slightly smaller teeth, though incisors and canines were frequently about the same size.
The anatomical traits that set anatomically modern hominids apart from archaic hominids should be described. In addition to having a larger and lower skull, a larger brow ridge, a larger and more projecting face, a taller and wider nasal aperture, a more projecting occipital bone, larger teeth, and no chin, archaic homo sapiens also have larger teeth.
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To be activated, skeletal muscle fibers must receive neurotransmitter from neurons. What structure must neurons penetrate to activate the myofiber?.
Endomysium should neurons penetrate to activate the myofiber
What is Endomysium ?The endomysium, a delicate network of connective tissue that surrounds individual muscle fibres and houses the blood vessels and nerves that supply them as well as the proteoglycan matrix for ion flux and metabolic exchange, is made up of connective tissue.
A thin layer of areolar connective tissue called the endomysium, which means "inside the muscle," surrounds each individual muscle fibre or muscle cell. It also has nerves and capillaries. The sarcolemma is what lays on top of the cell membrane of the muscle fibre.It is a layer of dense, wavy connective tissue that surrounds the entire muscle and serves to prevent friction between the muscle and bones.Learn more about Endomysium here:
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the process by which a change in gene expression causes immature cells to express different cell surface markers and respond to new signals is called
The process by which a change in gene expression causes immature cells to express different cell surface markers and respond to new signals is called BLANK.
What are immature cell?
An immature cell (lymphocytes) are cells that do not have the ability to fight against infection in the body and can develop into all types of blood cells, including white blood cells, red blood cells, and platelets.
What are Genes?
Gene are tiny structures found in the chromosomes that contains specific protein functions.
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a gorilla protecting his family from hunters is an example of what from natural selection?
Answer:
Behavioral Adaptation
Explanation:
Behavioral adaptation: something an animal does usually in response to some type of external stimulus in order to survive. Hibernating during winter is an example of a behavioral adaptation.
stimulants act by increasing the activity of the group of answer choices autonomic nervous system. central nervous system. peripheral nervous system. parasympathetic nervous system.
Stimulants act by increasing the activity of central nervous system.
Stimulants are broad class of drugs that increase the activity of the central nervous system. They have wide array of application for example in performance enhancement, medical benefits, and recreational uses.
Stimulants are drugs that increases the levels of chemicals in the brain and helps in alertness, attention, and physical activity. Central nervous system stimulants also raise blood pressure and increase heart rate and breathing rate. They due so by increasing certain chemicals or neurotransmitter such as dopamine and norepinephrine.
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If a green pea plant has a recessive allele for green peas, what other allele must be present.
Answer: If a pea plant has a recessive allele for green peas.
Explanation: I hope this helps!!!
a primary function of the nasal cavity is to the air (which means to warm, cleanse, and humidify the air) as it enters the respiratory tract
Major role of the nasal cavity is to humidify and warm the inspired air.
Nasal passages filter and warm the air, and make it moist before it goes into the lungs. They are also responsible for sensing the smell . Hairlike structures known as cilia line up the mucous membrane and traps the mucus out of the nose.
Nasal cavity is located above the oral cavity, inside to the nasopharynx . It has three regions mainly nasal vestibule , respiratory passage and the olfactory region.
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A researcher determined that a strain of e. Coli is producing a shortened version of a protein required for glucose metabolism. What type of mutation could be responsible for this shorter than normal protein?.
A researcher has been determined that a strain of E. coli is producing a shortened version of a protein required for glucose metabolism. This is a nonsense mutation that could be responsible for this shorter than normal protein.
What is a "nonsense mutation"?There are mutations that have no effect on the protein and mutations that have a negative impact on the protein. Here is the mutation that changes the protein into a glucose metabolism.
This is a condition of nonsense mutation, where, due to premature mutation, the shorter protein is formed.
Therefore, A researcher has been determined that a strain of E. coli is producing a shortened version of a protein required for glucose metabolism. This is a nonsense mutation that could be responsible for this shorter than normal protein.
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