Answer:
The three-letter nature of codons means that the four nucleotides found in mRNA — A, U, G, and C — can produce a total of 64 different combinations. Of these 64 codons, 61 represent amino acids, and the remaining three represent stop signals, which trigger the end of protein synthesis.
Explanation:
2 points
The EPA sets national air quality standards for common air pollutants. The
graph shows the change in the concentrations of these pollutants over time.
Which pollutant have the air quality standards had the greatest impact on?
Monitored concentrations
of pollutants
PM
Normaland Concert
1995
199 200 2005 2010
Year
O A. Ozone
B. NO
OC. PMO
O D. Lead
Answer:D lead
Explanation:
Based on the graph, it appears that the air quality standards have had the greatest impact on lead.
What is National air quality?National air quality refers to the level of pollution in the air across an entire nation.
The graph shows a significant decrease in lead concentrations since 1990 when the EPA began regulating lead emissions. The other pollutants, while still showing improvement, do not have as drastic of a decrease as lead.
The graph provided shows the change in concentrations of common air pollutants over time. The pollutant that stands out the most in the graph is PM (particulate matter), as it shows a significant decrease in concentrations over time.
This suggests that the air quality standards set by the EPA have had a positive impact on reducing PM concentrations in the air. Ozone, NO (nitrogen oxide), and lead also show some level of decrease in concentrations over time, but the decrease is not as significant as that seen with PM.
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Water pollution can impact our health as well as the health of the environment. Which of the following human activities contributes most directly to
the loss of water quality
Answer:
C. Application of toxic fertilizers to crops
Explanation:
Water pollution is defined as the contamination of water due to several human activities. Several causes of water pollution include use of fertlizers, construction of turbine, industrial waste, and sewage dumping.
Use of toxic fertizers directly affects the loss of water quality as fertilizers and pesticides are made up of chemicals such as phosphate and ammonia. The fertilizers and pesticides precipitate through the soil and mix with ground water that directly affect the quality of water. Residues of chemicals mix with river water due to flooding, excess irrigation, heavy rainfall and enter in the food chain. These chemicals are then have lethal effect in living organisms.
Hence, the correct answer is C.
In order for translation to start, four components need to be put together. These are
A. small ribosomal subunit, large ribosomal subunit, initiator tRNA with Methionine, mRNA
B. DNA, mRNA, tRNA, rRNA
C. Ribosome, nucleus, RNA Polymerase II, start codon
D. helicase, SSBP's, Primase, DNA polymerase III,
How does Keplers third law compare the periods and orbital radii of two planets with a solar system?
-the square of the ratio of the periods equals the cube of the ratio of the radii
-the square of the ratio of the periods equals the ration of the radii
-the ratio of the periods equals the square of the ratio of the radii
-the cube of the ratio of the periods equals the square of the ratio of the radii
Answer:
The square of the ratio of the periods equals the cube of the ratio of radii.
Explanation:
German astronomer Johannes Kepler who lived from 1571-1630, gave the three descriptive laws called Kepler's law. He derived this law after he had study and make observations of planetary motion done by Tycho Brahe.
The Kepler's third laws state that the square ratios of the period equals the cube ratio of the distance or radii.
From Kepler's third law, the square of the ratio of the periods equals the cube of the ratio of the radii.
Kepler's third law states that the ratio of the square of an object's orbital period with the cube of the semi-major axis of its orbit is the same for all objects orbiting the same primary.
The law is simplified using mathematical formula as follows;
T² ∝ R³
[tex](\frac{T_2}{T_1})^2 = (\frac{R_2}{R_1} )^3[/tex]
where;
T is the orbital period of the planetR is the radius of the planetThus, we can conclude that from the Kepler's third law, the square of the ratio of the periods equals the cube of the ratio of the radii.
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Based on the following pedigree, how is the trait being inherited?
A. sex-linked inheritance
B. complete dominance
C. codominance
D. multiple alleles
Answer:
The correct answer is option B. "complete dominance".
Explanation:
Widow's peak is a trait characterized by the growth of a hairline in the center of the forehead. By looking at the pedigree we can conclude that widow's peak has no sex-linked inheritance because there is father-to-son transmission. There is no codominance or multiple alleles inheritance neither, because there is no slight differences in the trait (people either have or not have widow's peak). We can conclude that widow's peak have a complete dominance inheritance, because in the case where both parents have widow's peak they have a female daughter with no widow's peak. This means that both parents were heterozygous of the widow's peak allele, and since both expressed the trait we can conclude that it is completely dominant.
select the correct answer from each drop-down menu.
Lisa eats a banana with her breakfast. As she digests the banana, her blood glucose level increases, which causes the pancreas to
produce
A few hours later, her blood glucose level decreases, signaling the pancreas to
produce
Answer:
Correct answer in blank 1. Insulin.Correct answer in blank 2. Glucagon.Explanation:Insulin is hormone released by pancreas which lowers the sugar level in blood by changing sugar to other forms.Glucagon is a hormone released by pancreas which increase the sugar level in blood.As Lisa eats banana blood sugar increase signaling increase of insulin.After few hours blood sugar decrease due to insulin, signals glucagon production to increase glucose level.
Answer:
1. Insulin , 2. Glucagon
Explanation:
I got it right on Plato.
How does pollen typically travel to a female cone?
birds
water
wind
insects
Answer:
wind
Explanation:
I say wind as well
Explanation:
help now will give brainlest 100 points Rebekah is studying lichens growing on a cooled lava field. What is Rebekah most likely researching? secondary succession climax communities pioneer species disturbances
Answer:
The Answer Is c
Explanation:
Answer:
She is studying pioneer species.
Explanation:
The lichen is a hardy species and they colonize on disrupted ecosystems, such as a lava field.
Identify the parts of a cladogram using the drop-down menus. Label A
Answer:
Clade
Explanation:
Answer:
Identify the parts of a cladogram using the drop-down menus.
Label A
Label B
A cladogram is shown. The bottom large bracket is labeled b. The bracket reaches up to another bracket on the right. The bracket reaches up to a double-bracket on the left. The double-bracket is labeled A.
Explanation:
Which of the following plant adaptations allows plants to use animals to transport their seeds to new locations
A. Large Leaves
B. Strong Stems
C. Sweet Fruit
D. Deep Roots
Answer: C Sweet Fruit
The plant adaptations allow plants to use animals to transport their seeds to new locations is sweet fruit. The correct option is C.
What is adaptation?Adaptation is a type of changes or acceptance of the body according to the environment and surroundings for better and easy survival. Adaptation can be for short time or long time.
Animals are important factor for the pollination of flowers and transportation of seeds to new places and in increasing the population of the vegetation.
Animals most probably eats sweet fruits, and when they eat these fruits their seeds are to fall into ground and grow new saplings. They take fruits with them to different places, which also propagate the plat to different places.
Thus, the correct option is C. sweet fruit.
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What might be two ADVANTAGES of asexual reproduction? What might be two DISADVANTAGES of asexual reproduction? What might be two ADVANTAGES of sexual reproduction? What might be two DISADVANTAGES of sexual reproduction?
Answer the first question please!
Answer:
hunger, thirst, sleepiness
Answer:
hunger thirst sleepiness
Explanation:
sry if wrong
What do the empty shapes in a pedigree chart mean?
a)Unaffected/Carrier
b0Affected
Uhh normally they mean that the person is unaffected or a carrier, but you'd have to look at a specific one since some have different keys.
What is responsible for producing energy in both plant and animal cell?
which taxonomic group do the organisms in the diagram fall underA fungi since they lack a cell wall and nucleus be protists since they are unicellular with nucleus C protists with since they are multicellular heterotrophs d fungi since they are multicellular autotrophs
The organisms in the diagram belong to the taxonomic group of Fungi. They are eukaryotic organisms that appeared on land over 450 million years ago and feed on decaying and dead matter.
Explanation:The organisms that fall in the given diagram likely belong to the taxonomic group of Fungi. Fungi are eukaryotic organisms that appeared on land over 450 million years ago. They differ from plants and animals in several ways. For example, they are heterotrophs and contain neither photosynthetic pigments such as chlorophylls nor organelles such as chloroplasts. Fungi feed on decaying and dead matter, making them saprobes. Fungi can be unicellular like yeasts or can develop a network of filaments called a mycelium. The cell of a fungus is surrounded by a thick cell wall made of chitin. Furthermore, fungi are unable to perform photosynthesis, thus they are considered heterotrophic organisms.
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How does a moth obtain resources?
Answer:It uses its mouth to eat food and its legs to grab things.
Explanation:
Answer:
The moths have to find nectar, find mates and a plant to lay the eggs on. These plants are dispersed so the moths have to fly considerable distances to find them. Fuel for flight comes from nectar initially but then the moth switches to lipids to fuel flight.
Explanation:
thats what they do.....
Which of the graphs below best illustrates homeostasis? Graph A Graph B Graph C Graph D
The graphs below best illustrate homeostasis in - graph D as internal temperature maintains equilibrium and shows very little fluctuation with change in external temperature.
Homeostasis is the state of regulating the internal environment including internal, physical, and chemical conditions in response to the change in the external environment by living systems.
This regulates various variables such as body temperature and fluid balance, being kept within a certain homeostatic range.Any self-regulating process involves maintaining stability while regulating to conditions that are best for its survival.In this graph, graph D shows very minimal change and maintains a normal body temperature range even there is fluctuation in external temperature.
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Graph D indicates homeostasis due to no change in the temperature.
Graph D indicates homeostasis because there is very less or no fluctuation occurs in the internal temperature as compared to the temperature of the external environment. There is a great change occur in the temperature of the external environment but the body maintain the internal temperature same which shows us the property of homeostasis so we can conclude that graph D shows the property of homeostasis.
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In order for an statonary object to move, an unbalnced force must act upon it.
True
False
Answer:
true
Explanation:
any force can be added to make a stationary object move. but if it was balanced then it would just stay in position
if there is 100N of force going towards the object, and you are pushing the object with 100N force. It will not move.
Final answer:
The statement that an unbalanced force must act upon a stationary object to set it into motion is true according to Newton's first law of motion. An object at rest remains at rest, while an object in motion maintains its velocity unless acted upon by an unbalanced force.
Explanation:
The statement that an unbalanced force must act upon a stationary object to set it into motion is True. According to Newton's first law of motion, also known as the law of inertia, an object will not change its state of motion (i.e., it will not accelerate) unless an unbalanced force acts upon it. This means that if an object is at rest, it will stay at rest until a force that is greater than the sum of all opposing forces is applied to it. Contrary to misconceptions, a force can do work even if an object doesn't move, for instance if you're pushing against a wall with a force, work is being done on a molecular level, although there's no macroscopic movement.
When two unequal forces act on an object, the object will move in the direction of the net or resultant force, which is the vector sum of all the forces acting upon it. If this net force is zero, the object will remain stationary or continue to move at a constant velocity. This is a fundamental concept in classical mechanics.
Mice collected from the Sonoran desert have two phenotypes, dark(D) and light (d). The mice shown below were collected in a trap. Calculate the frequency of individuals that display the recessive trait(dd)
The branch of biology which deals with genes and inheritance is called genetics.
The correct answer is 71%.
The information in the question is not complete, the picture is absent here.
After finding the picture in the other answer.
The number of light color mice is 21 that have the gene "dd" and the number of the dark color mouse is 6 that have gene "DD".
The percentage is as follows:-
21-6=15
[tex]\frac{15}{21}*100 = 71%[/tex]%
Hence, the correct answer is 71%.
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We need more information to calculate the frequency of individuals that display the recessive trait (dd) in the mice collected from the Sonoran desert.
Explanation:To calculate the frequency of individuals that display the recessive trait (dd), we need to know the phenotypic ratio of the mice collected from the Sonoran desert. The information provided in the question does not give the phenotypic ratio for the dark (D) and light (d) phenotypes. Without this ratio, we cannot accurately calculate the frequency of the recessive trait. To answer the question, we need more information.
HELP ASAP!! 68 points!!
Which of the following refers to the small irregularities on a tool that happen every time a tool is used?
A.
slipped mark
OB. accidental characteristics
O C. rifling
OD. pitch
O E. class characteristics
Answer: OB. Accidental Characteristics
Explanation: Physical markings and features in a material that are acquired by wear or by some accidental or other non-repeatable circumstance during manufacture. For example, glass that is made by pouring molten material into a mould may develop bubbles which would be considered an accidental characteristic.
If the bird population were to be wiped out due to disease, how would this affect the evolution of beetle coloration?
Answer:
The population of the Beatles would grow and eventually lead to overpopulation.
Which groups are involved in the peptide links of amino acids?
In peptide bond formation, the amino group of one amino acid reacts with the carboxyl group of another, creating an amide bond. The polypeptide chain has a directional structure with a free amino group at the N terminal and a free carboxyl group at the C terminal, crucial for protein function.
Explanation:Amino acids are the building blocks of peptides and proteins, linked together by peptide bonds. The groups involved in forming a peptide bond are the amino group (-NH2) from one amino acid and the carboxyl group (-COOH) from another amino acid. During the formation of a peptide bond, these groups combine in a dehydration synthesis reaction, resulting in the release of a molecule of water and the creation of an amide bond between the two amino acids.
The resulting polypeptide chain has a free amino group at the N terminal and a free carboxyl group at the C terminal. This directional structure is important as the sequence of amino acids, which determines the protein's properties, is read from the N terminal to the C terminal. The unique sequence of amino acids is key to the protein's structure and function after it goes through post-translational modifications to become fully functional.
ecosystems can be described by the types of
Answer:what type of what
Explanation:
Answer:
All types of ecosystems fall into one of two categories: terrestrial and aquatic.
Explanation:
Terrestrial ecosystems are land-based, while aquatic are water-based.
When the moon moves directly between the sun and Earth and casts its shadow over part of Earth, you are
seeing a:
A full moon
B solar eclipse
Clunar eclipse
D waxing crescent moon
Answer:
B solar eclipse
Explanation:
The functional role of an organism in an ecosystem
A)Habitat
B)Niche
C)Primary succession
D)Secondary succession
Answer:
B, Niche
Explanation:
A niche is the role of an organism. A habitat is an organism's home, and C and D don't have to do with the role of an organism. Hope this helped :)
Which are examples of maintaining homeostasis?select all that apply
The example of maintaining homeostasis is burns on the surface of the skin and infections on the surface of the skin. The correct options are C and E.
What is homeostasis?The sort of self-regulating process, such as homeostasis, helps an organism retain stability while responding to environmental factors that are favorable for its survival.
If homeostasis is effective, life goes on; if it is unsuccessful, the organism dies or suffers a catastrophe.
As it is currently understood, homeostasis is a self-regulating process that allows biological systems to remain stable while responding to shifting environmental factors.
Burns resemble a wound. translates to a skin opening where homeostasis kicks in to stop bleeding. Some skin infections result in bleeding, which triggers homeostasis.
Thus, the correct option is C and E.
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Your question seems incomplete, the missing options are:
Probiotic bacterial growth on the surface of the skin
sweat production on a hot summer day
burns on the surface of the skin
dilation of the skin’s blood vessels
infections on the surface of the skin
constriction of the skin’s blood vessels
which of the following substances is formed during photosynthesis?
Answer:
sugar
Explanation:
An array of chemical reactions done by plants to transform energy from the Sun into chemical energy, that is, in the form of sugar is known as photosynthesis. Primarily, the plants utilize sunlight's energy to react water and carbon dioxide to generate glucose (sugar) and oxygen. In plants, the process of photosynthesis takes place in the chloroplasts.
Mike works in the metals industry. Which type of coal should he use as a fuel source?
A.lignite
B. bituminous
C. anthracite
D. subbituminous
Answer:
B. bituminous
Explanation:
Bituminous coal is an organic sedimentary rock produced by compression of peat bog material by diagenesis and submetamorphics.
Bituminous coal has low moisture and high carbon content and hence used for the production of steel and cement, coke production an electricity generation.
Coking coal is a type of Bituminous coal are best used as fuel dource in metal industry having very narrow range of volatility and plasticity. Volatility is maintained by smelters to optimize the ease of burn rate, ignition, and energy output of the coal as this determines the burn rate of the coal.
Hence, the correct option is B. bituminous.
Answer:
answer is b
Explanation:
Describe the effect of land development on biodiversity?
Explanation:
The effect of land development on biodiversity has resulted in the habitat destroyed, the ecosystem is destroyed, species extinctions, and overexploited.An increase in urbanization, human activities is the main cause of land development and this has affected biodiversity.development in land includes activities such as clearing of land, increasing the intensity of a landscape, removal of vegetation, filling of the land, grading, construction, dredging has resulted in the loss of wildlife, affected the biota, threatened the ecosystems, species.10. How many protons are in an element with an atomic number of 6 and a mass number of 12?
A 18
B 12
C 10
D 6
Answer:
d-6
The element carbon (C) has an atomic number of 6, which means that all neutral carbon atoms contain 6 protons and 6 electrons. In a typical sample of carbon-containing material, 98.89% of the carbon atoms also contain 6 neutrons, so each has a mass number of 12
Explanation:
Protons and neutrons are always equal The element here is a Carbon molecule. The answer here is D 6
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