Answer:
Yes,all fossils contain intact DNA that can be sequenced
Explanation:
Describe a trophic cascade (at
least three organisms long)
that would occur if the orca
whale population were to decrease
Answer:
escribe a trophic cascade (at
least three organisms long)
that would occur if the orca
whale population were to decrease
Explanation:
What is the best way to prevent the growth of bacteria on food preparation surfaces?
The best way to prevent the growth of bacteria on food preparation surfaces is sterilization. Details about sterilization can be found below.
What is sterilization?Sterilization is the process of treating something to kill or inactivate microorganisms.
Sterilization can also be done to prevent the reproduction of microbial population.
It is a known fact that microbes are responsible for food spoilage, hence, to prevent this, it is important to kill or get rid of them.
Therefore, the best way to prevent the growth of bacteria on food preparation surfaces is sterilization.
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Please tell me the following correct answers if I am wrong. Multiple Choice
If a company is organized by function, that means it is grouped into departments based on what? A. The type of work people do B. The product being produced C. The type of customer being served D. Location Please select the best answer from the choices provided A B C D
Answer:
A
because a is d correct answer
what is the most widely used method of gene editing?
CRISPR/Cas9 is the most widely used genome editor.
Genome editing, also called gene editing, is an area of research seeking to modify genes of living organisms to improve our understanding of gene function and develop ways to use it to treat genetic or acquired diseases.
Select all that apply
Chromosomes ___?
A. Are located in the nucleus
B. Occur in numbers that are the same for all organisms
C. Occur in numbers that are the same for all members of a certain species
D. Are organized into karyotypes for scientists to analyze
E. Are rod shaped structures that contain DNA
Answer:
A
Explanation:
A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
Answer:
A
Explanation:
A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
Economic importance of tilapia fish
Answer:
Tilapia is one of the most productive and internationally traded food fish in the world. The production of farmed tilapia is among the fastest expanding food sectors in the world. Nile tilapia ( Oreochromis niloticus) is the most cultured freshwater species among the farmed tilapia and contributes about 71% of the world total tilapia production.
Tilapia is one of the most important farmed fish species worldwide (FAO 2018) and an important source of protein (Fitzsimmons 2000;Hai 2015). Due to its sequenced genome (Conte et al. 2017), easy reproduction, efficiency in adapting to diverse diets, high resistance to diseases and handling practices, and high tolerance of a wide variety of husbandry conditions, it is considered an ideal model in toxicological research.
Explanation:
I hope it helps
Differences between the chromosphere and corona of the sun
Corona is the outermost layer whereas chromosphere is the transparent layer of the sun.
What is the differences between the chromosphere and corona of the sun?Corona is the outermost, hot shell of the atmosphere of the sun while on the other hand, the chromosphere is a transparent layer present between the corona and the photosphere.
So we can conclude that Corona is the outermost layer whereas chromosphere is the transparent layer of the sun.
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Answer:
I is a low density layer which is about 2,000km thick. It is called chromosphere because it has a red to pink colour. It is normally only visible during a solar eclipse. The corona is plasma surrounding the Sun which extends hundreds of kilometers from the surface of the Sun.
A fly has two alleles for the color of its eyes. The green allele is recessive, and
is represented by q. The blue allele is dominant, and is represented by p. If 44
of 100 organisms are green, what is p?
Homozygous dominant+ Heterozygous + Homozygous recessive = 1
↓↓↓
p²+ 2pq+q=1
A. 0.66
B. 0.56
C. 0.44
D. 0.34
Answer: D. 0.34
Explanation:
The Hardy-Weinberg Principle is a theory in biology that represents populations of organisms that don't experience any changes in genotypic frequency from generation to generation. These populations must meet the following conditions:
No genetic mutationsCompletely random matingNo gene flowNo selection (natural or artificial)An infinite population sizeIf a population meets these criteria, its genetic and allelic frequencies will remain constant and the population will be in Hardy-Weinberg Equilibrium. However, it is not possible for this to occur in nature, because at least one condition will always be violated in natural populations.
Hardy-Weinberg EquationsThere are two important equations to use when doing problems like this. The first is p + q = 1. It represents the allelic frequency of the population.
p = the frequency of the dominant alleleq = the frequency of the recessive allele
The second equation is p² + 2pq + q² = 1, which shows the predicted frequencies of the three possible genotypes.
44 of our 100 organisms are green, and we know that to be green, they must have a homozygous recessive genotype (gg). That means that the frequency of homozygous recessives (q²) = 44/100 or 0.44. Since we have q², we can just take the square root to find q.
[tex]\sqrt{q^2}[/tex]= [tex]\sqrt{0.44}[/tex]
q = 0.66
Now, we can plug q into our first equation, p + q = 1.
p + 0.663 = 1
p = 0.337, or about 0.34
To make sure these are right, we can plug them into the Hardy-Weinberg equation to check!
p² + 2pq + q² = 1
(0.34)² + 2(0.34)(0.66) + (0.66)² = 1
0.1156 + 0.4488 + 0.4356 = 1
1 = 1
Propose an ecological solution that would protect the tiger species by maintaining the complex interactions within an ecosystem. Provide at least one strength and one limitation to this proposed solution.
Tigers have the ability to coexist with their own predators like brown bears, leopards, etc. In this condition, it is the risk that these predators may threaten the tiger species. Therefore, it is required to construct a special habitat for tigers where they get enough resources without any threat.
What is an Ecosystem?An ecosystem may be defined as a place or area where members of different species live together and interact with one another for the purpose of food, shelter, and space.
The strength of the above solution is that the population of tiger species will be maintained in near future, but the limitation is that here we provide an artificial habitat for the tiger. Now, it depends on them to reside naturally or not.
Therefore, it is well described above.
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For what purpose was NASA
formed by the United States in
1958?
A. building up national defense
B. repairing the country's infrastructure
C. increasing industrial efficiency
D. taking over the space program
The purpose of the formation of NASA by the United States in 1958 was D. Taking over the space program.
What was the US space program?The US space program centered on:
Solar system explorationOuter space explorationHuman spaceflightAerospace and aeronautics researchEarth science and space science.NASA was not formed for:
National defenseInfrastructure repairsIncreased industrial efficiency.Thus, NASA was formed in 1958 to oversee U.S. space exploration and aeronautics research in response to the Soviet Union's Sputnik I in 1957.
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Match the following terms and definitions.
1.
short-term hormonal influences on animal behavior usually
occurring late in life
2.
a technique that associates a natural response to a stimulus
to an unrelated stimulus; also called Pavlovian conditioning
3. the study of animal behavior in its natural environment
4, when an animal learns not to respond to a stimulus
5. finding a solution to a once unsolvable problem
6,
learning that has taken place but is dormant until a situation
requires it
100
classical conditioning
insightful learning
ethology
latent learning
habituation
activational effects
1. Short-term hormonal influences on animal behaviour usually occurring late in life - activational effects
2. A technique that associates a natural response to a stimulus to an unrelated stimulus; also called Pavlovian conditioning -- classical conditioning
3. The study of animal behaviour in its natural environment - ethology
4. When an animal learns not to respond to a stimulus - habituation
5. Finding a solution to a once unsolvable problem - insightful learning
6. Learning that has taken place but is dormant until a situation requires it - latent learning
How, explain your answer?
Activational effects are the sudden or immediate temporary transient effects of behavioural changes due to the influence of hormones, especially the gonadal or these hormones. The behaviour change in male animals due to an increase in male se hormonal activity can be referred as an activational effect.
Classical conditioning facilitates learning of a behaviour when a conditioned stimulus is associated with an unconditioned stimulus leading to a conditioned response. Animal training by pairing a new unconditioned stimulus with an already known conditioned stimulus, a new conditioned response of behaviour change can be observed.
Ethology refers to the scientific zoological study (includes both laboratories as well as natural field studies) of animals' behavior with relation to their natural environment. It studies and compares about animal behavioral processes changes under various disciplines like ecology, anatomy, evolution etc.
Habituation is an associative learning process that results when an animal learns to resist a stimulus and not to respond to it after repeated exposure.
Insightful learning occurs when various parts of a problem are analyzed and their relationship is understood to arrive at the solution suddenly. Animals must look at a situation as a whole, and observe and analyze it to solve the problem. Some animals like chimpanzees can learn through insightful learning
Latent learning occurs without any associated reinforcements. Animals learn new behaviour through latent learning.
Thus, this could be the answer.
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Following the Industrial Revolution, there was a dramatic change in the coloring of moths near the town of Manchester, England,
in the 1850s. There were many factories in Manchester that released dark soot and pollution into the air and forests nearby. In
the 1950s, the government put air quality control measures into place. The graph shows the percent of each color variation of
peppered moths over time.
Peppered Moth Population
of Manchester
Light
moth
100%
80%
60%
40%
Dark
moth
Dark moth
Light moth
20%
0%
1850
1950
2000
1900
Year
Which statement best describes why the frequencies of dark and light peppered moths changed?
A. Pollution from the factories resulted in the widespread death of both light-colored and dark-colored moths.
B. Soot from the factories darkened trees, making dark moths harder to see and less vulnerable to predation.
C. Emissions from the factories made the sky dark, so the moths changed color to be better hidden during flight.
D. Greenhouse gases from the factories made the surrounding areas warmer, favoring light moths that reflect heat more easily.
Percent of
Population
The point on Earth's surface that is directly above where an earthquake begins is the _____.
The location below the earth's surface where the earthquake starts is called the hypocenter, and the location directly above it on the surface of the earth is called the epicenter
Which of the following statements about the stomach is true?
O
Pepsins are the digestive enzymes that enable the stomach to break
down proteins.
O
Amylase is the pasty substance that's created when stomach enzymes
and food mix together.
O
The stomach receives chyme from the esophagus, which it turns into
bolus before passing it on to the small intestine.
The stomach processes nutrients, absorbs water and removes any
toxins created during chemical digestion.
When a substance accumulates within a living organism, it is known as ____.
A: Bioaccumulation
B: Venomous
C: Non-persistent
D: Corresive
Answer:
A: Bioaccumulation
Explanation:
It accumulates (builds up) in you, its bioaccumualtion.
Exocytosis is a type of cellular transport that allows materials to move across the plasma membrane of a cell. Which of the statements describe properties of exocytosis?
Exocytosis uses membrane channel proteins to export materials from the cell.
Exocytosis is the primary method of transporting large molecules into the cell.
Exocytosis uses transport vesicles to export materials from the cell.
Exocytosis is the primary method of transporting large molecules out of the cell.
Exocytosis uses transport vesicles to import materials into the cell.
Exocytosis is the primary process by which materials are sent out of the cells.
What is exocytosis?Exocytosis refers to the processes by which materials produced or synthesized within cells are taken out of the cell.
The process of exocytosis is important for cell to remove wastes as well as to send substances produced in specific cells to where they are needed.
The properties of exocytosis include
Exocytosis uses membrane channel proteins to export materials from the cell.Exocytosis uses transport vesicles to export materials from the cell.Exocytosis is the primary method of transporting large molecules out of the cell.Therefore, exocytosis is the primary process by which materials are sent out of the cells.
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In a grassland ecosystem, praying mantises catch and eat grasshoppers. However, there has been a significant decrease in the praying mantis population in recent years.
How will this most likely affect the grasshopper population over time?
The population will decrease because grasshoppers are the competition.
The population will increase because grasshoppers are the prey.
The population will increase because grasshoppers are the competition.
The population will decrease because grasshoppers are the prey.
Answer:
The population will increase because grasshoppers are the prey.
Answer - B. The population will increase because grasshoppers are the prey.
Because this is a Unit Test you just have to trust me.. Hope this helps. Good luck!
PLEASE HELP PLEASE
Do you think this is a good way to eliminate invasive species from an ecosystem? Do you think the risks of the gene drive getting into another species are worth gaining biodiversity in an ecosystem? Explain your opinion.
Use of bioagent is a good way to eliminate invasive species from an ecosystem.
What is a good way to eliminate invasive species from an ecosystem?In my opinion, to eliminate the invasive species from an ecosystem we should find out its bioagent instead of chemical spraying because bioagent does not adversely affected the environment.
The risks of the gene drive getting into another species are not worth gaining biodiversity in an ecosystem because it leads to many consequences and unpredictable effects on ecosystem.
So we can conclude that use of bioagent is a good way to eliminate invasive species from an ecosystem.
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Yes, it is a good way to eliminate invasive species from an ecosystem. This is because invasive species play a critical role in the limitation of biodiversity of a particular ecosystem.
What is Biodiversity?Biodiversity may be defined as the sum total of all the variety of living organisms in a particular ecosystem.
No, the risks of the gene drive getting into another species are not worth gaining biodiversity in an ecosystem. This is because it directs considerable influences and unanticipated impacts on the ecosystem.
Therefore, it is well described above.
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Glycogen is an energy-storage molecule in humans. A hormone that is called insulin controls the storage of glycogen in the liver. Insulin is made up of amino acids.
Which statement correctly identifies the types of macromolecules that are described?
Glycogen is a protein, and insulin is a lipid.
Glycogen is a protein, and insulin is a protein.
Glycogen is a carbohydrate, and insulin is a lipid.
Glycogen is a carbohydrate, and insulin is a protein.
The statement "Glycogen is a carbohydrate, and insulin is a protein" correctly identifies the types of macromolecules that are described. Thus, the correct option is D.
What is the main function of Glycogen?The main function of glycogen is to control the release of glucose into the blood when the condition is glucose deficient. It is the liver that directly contributes to the release of glucose into the blood.
Insulin is a hormone that is made up of amino acids, hence it is a small protein that contains almost all structural features of proteins.
Glycogen is a complex carbohydrate that can easily and rapidly coverts the form of glucose into energy.
Therefore, the correct option for this question is D.
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which of these describes the gulf stream
Answer:
The Gulf Stream is formed from the convergence of the North Atlantic Equatorial Current bringing tropical water from the east, and the Florida Current that brings warm water from the Gulf of Mexico . The Gulf Stream takes this warm water and transports it northwards along the U.S. east coast . As a western boundary current
Hunting in the area causes all of the shrews in the area to be
killed. How would this affect the rest of the organisms in the
food web?
Answer:
C: the number of crickets would increase
Explanation:
If less shrews were to exist than their prey would increase because they have less predators.
In the Galapagos Island finches, the variation in the beak shape correspond to which finch characteristic?
Answer:
Their diet
Explanation:
Over time, all of the finches adapted to their food source. This caused the evolution of their beaks to begin.
Which of these has the highest BTU content when burned?
A: Paper
B: Plastic
C: Glass
Answer:
A. Plastic
Explanation:
The heat release rate for expanded plastics is generally greater due to the relatively low density and resulting high burning rate.
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Name the plant tissue
The different types of plant tissues are:
1. Meristematic tissues - It is of three types: Apical, Lateral and lntercalary.
2. Permanent Tissue - It of two types: Simple and Complex tissues. Simple tissues are of three types Parenchyma, Collenchyma and Sclerenchyma.
Complex tissues are of two types - Xylem and Phloem.
Species evolve useing what process
A evolution
B natural selection
C acquired characteristics
D surprise
Answer:
b
Explanation:
what type of nitrate helps algae grow?
Answer:
potassium nitrate (KNO3)
Explanation:
Research into nuclear fusion will likely require a large investment of time and money before it might be used as an energy source.
Which statement best describes the benefits that would make the investment worthwhile?
Fusion requires a large amount of energy and occurs in stars.
Fusion produces large amounts of energy, and the fuel is found on Earth.
Fusion produces no radioactive waste, and the fuel is plentiful.
Fusion requires little energy to begin and would continue through a chain reaction
The statement best describes the benefits that would make the investment worthwhile is Fusion produces no radioactive waste, and the fuel is plentiful, which means letter C.
What is nuclear energy?Nuclear or atomic energy is the energy produced in thermonuclear plants, which use uranium and other elements as fuel. The working principle of a nuclear power plant is the use of heat to generate electricity.
Some of the advantages of this energy is abundance of uranium, as an essential element in the production of nuclear energy and no use of fossil fuels.
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Can somebody help me with this please?
Select the correct location on the image.
Students are having a group discussion and notice that Maria has not had a chance to introduce her thoughts.
Which student response best draws Maria into the discussion?
Is Maria even
paying attention?
Maria, what do
you think?
Don't you
agree, Maria?
Alright, Maria, will
you settle this
argument?
Is Maria even paying attention? is the student response which best draws Maria into the discussion.
What is Discussion?
This is defined as the process of talking with people about a particular subject or topic.
Is Maria even paying attention? will make her alert and more involved so as to know what is being talked about.
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Answer:
Maria What do You think
Explanation:
The Least rude Way Of saying it