Selective pressure can be a driving force of evolution; option A.
What is selective pressure?Selective pressure refers to external forces which affect an organism's ability to survive in a given environment.
Selective pressure can either decrease or increase the occurrence of a trait.
Therefore, selective pressure can be a driving force of evolution.
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What other things could we have extracted DNA from instead of the plant materials?
We have extracted DNA from plant materials such as tissue samples, spinach, green pea pods, papaya seeds, strawberries, banana flesh, chicken liver, etc.
What is the method of DNA isolation?DNA isolation can be carried out by different methods such as the Phenol-chloroform method, salting out and proteinase K method, an adsorption method, etc.
DNA isolation requires a series of steps that are followed up as per the protocol. It involves various techniques like centrifugation, pipetting, etc.
DNA can also be extracted from the roots of the plants, as well as the disruption of leaves completely.
Therefore, it is well described above.
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What is the distance between Earth and the Moon?
364,000 km
384,000 light-years
364,000 light-years
384,000 km
Answer:
384,000 km or 238,900 mi :)
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____________feed on animal waste and debris
Answer:
I'M NOT TELLING YOU!Just kidding
Explanation:
They are called scavengers.Scavengers are those animals that feed on debris and animal wastes and such like that.Examples of scavengers:Vulture, Coyote, hyenas, jackals etc.Hope this helps.Good luck ✅.What do prokaryotic and eukaryotic organisms not have in common?
Group of answer choices
Cytoplasm
DNA
Ribosomes
Organelles
Answer:
They don't have DNA common. In prokaryotic cells there is a single piece of DNA whereas in eukaryotic there are multiple chromosomes.
Summarizing Owl Pellet Contents An owl eats its prey whole or in large pieces. Summarize what is found in an owl pellet and why it is regurgitated. Summarizing Owl Pellet Contents An owl eats its prey whole or in large pieces . Summarize what is found in an owl pellet and why it is regurgitated .please help fast i olny have less than 6 hours to do the rest of summer school
Teeth, skulls, claws, and feathers are found in an owl pellet.
What is found in an owl pellet and why it is regurgitated?An owl pellet has indigestible material that is left in the gizzard i.e. teeth, skulls, claws, and feathers which are too dangerous to pass through the rest of the owl's digestive tract. In order to safely excrete this material, the owl's gizzard compacts it into a tight pellet that the owl regurgitates.
So we can conclude that teeth, skulls, claws, and feathers are found in an owl pellet.
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Teeth, bones, hair, and exoskeletons do not decompose in an owl's digestive tract. This is further explained below.
What is Owl Pellet?Generally, When an owl roosts, it often drops a few fuzzy, oval things on the ground below its perch as a visual signal of its presence.
In conclusion, An owl pellet consists of these prey items squeezed together. The owl ejects this waste from its digestive system by regurgitating it.
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Answer asap whats the correct answer for brainlist
Answer: The fertile soil, it limited the number of Japanese who could earn a living from farming
Evidence comes from data that has been and that supports or refutes a(n) .
Evidence comes from data that has been and that supports or refutes a scientific theory.
What is a scientific theory?A scientific theory is any well-sustained statement that was verified and validated by using the scientific method.
A scientific theory is based on the collection of empirical evidence that confirms this statement, but it may be refuted by new lines of evidence.
In conclusion, evidence comes from data may support or refute a scientific theory.
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What may occur when convergent boundaries interact?
formation of island chains
creation of mid-ocean ridges
creation of convection currents
formation of rift valleys
When convergent boundaries interact, the formation of island chains happens. The correct option is A.
What are convergent boundaries?
Convergent boundaries is the name given to those plates which collide with one other, and they may both go upside or one plate from beneath the other plate.
Convergent boundaries collide in three forms and for different types of landforms. The types are:
Ocean-oceanOcean-continentContinent-continent.When convergent boundaries interact, they create a chain of islands. When one plate moves over another, a hot plate erupts lava and forms volcanic eruptions.
Thus, the correct option is A. formation of island chains regarding when convergent boundaries interact.
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Answer: A, formation of island chains
Explanation: got it on edge
PLEASE I REALLY NEED HELP! THIS ASSIGNMENT IS DUE TODAY!!
Part D
If different masses of water are heated to the same temperature, which sample will absorb more energy? Base your argument on the definition of heat and what you learned from the experiment.
If different masses of water are heated to the same temperature, the sample that will absorb more energy will be the mass of water with the greatest amount of water mass, because the larger the material, the greater the amount of heat needed.
What is the specific heat of water?Water has a specific heat of 1 cal/g. ºC This means that the energy of 1 cal is required for a variation of 1 °C in 1 g of water.
With this information, we can conclude that Water's specific heat power is 4.2 joules per gram per Celsius degree or 1 calory per gram per Celsius degree.
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Need help with my hw
The mutation does not affect the structure of the protein and is called a silent mutation.
What is a mutation?A mutation is a change that occurs in the sequence of nucleotides of a gene.
The mutation that changes the base G in the DNA to A will result in the following corresponding changes in the mRNA and tRNA:
In the mRNA; A will be complementary to UIn tRNA; U will be complementary to AThe mutation does not result in any changes since the amino acid coded for by the mRNA has more than one codon coding for it.
This type of mutation is called a silent mutation.
In conclusion, some mutations occurring in genes have no effect on the proteins the gene codes for.
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The following table describes five molecules that belong to the same class.
Molecule Function
Hemoglobin transports oxygen in the blood
Amylase an enzyme that breaks down starch
Immunoglobulin an antibody produced in response to an invading particle
Collagen the main structural component of connective tissues
Aquaporin transports water in and out of the cell
Which class of biomolecule do the molecules in the table belong to?
A.
nucleic acids
B.
proteins
C.
carbohydrates
D.
Answer:
B
Explanation:
proteins are used to repair muscle and make it stronger.
Answer:
A. nucleic acid
It's nucleic acid because both DNA and RNA are considered as nucleic acid because that can be found in the nucleus of the cells.
Evidence of an oxygen-rich atmosphere is the presence of
A cyanobacteria
B. trace fossils
C. banded iron formations
D. stromatolites
Fish populations and other aquatic resources are likely to be affected by changes in what aquatic factors? a. water temperatures b. disease c. water quality d. all of the above please select the best answer from the choices provided a b c d
Fish populations and other aquatic resources are likely to be affected by changes in all of the above i.e., water temperatures, disease and water quality.
a) Water temperatures: Warm water released from industries into the rivers has lesser BOD (biological oxygen demand) than cool water. The marine species which are unable to migrate will die due to the unavailability of oxygen while frequent algal blooms will be present due to no availability of oxygen.
b) Diseases: Increase in toxins and chemicals will increase in the river as a result of the industrial dump. This will cause industrial animals to acquire toxicants in their bodies and will cause several diseases, wounds, and eventually the death of the organism.
c) Water quality: due to warm and toxic water many marine animals will migrate to places with cooler water. there will be increased algal blooms. This will affect the whole food web and hence there will be a loss of biodiversity.
hence all of the above factors will affect Fish populations and other aquatic resources.
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Which part of the scientific method is best illustrated by the
biologist wondering why there were so few frogs in the second
year compared to the first?
O forming a hypothesis
O making an observation and asking a question
O collecting data
O setting up an experiment
Answer:
I think it is making an observation and asking a question
Scientific methods are the procedural steps that involve experimentation to reach conclusion. The method best represents the observations and asking of questions. Thus, option B is correct.
What is the scientific method?The scientific method has been defined as the multistep process that involves various method procedures, including the questions, research topic issues, hypothesis, experimental and research tests, analysis of data, and drawing of conclusions.
The scientific method primarily starts with a question about the subject matter that needs to be solved for which the research is performed and a hypothesis is given. After a hypothesis, is established experiments are conducted so as to make observations.
The observations are then analyzed to draw conclusions to present the findings. This interpretation gives the solution to the presented problems. The biologist was asking questions when he observed and compared the population of the frogs in the first and second years.
Therefore, in option B. the biologist asked questions based on the observations.
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How have federal and state authorities attempted to eradicate Burmese Pythons from the Everglades?
Federal and state authorities have attempted to eradicate Burmese pythons from the Everglades by allowing the hunting and trapping of these animals, giving rewards to these hunters.
How was the hunt to eradicate Burmese pythons from the Everglades?In Florida, they tried everything to end the Burmese python plague that threatens to devour native species of the Everglades, one of the most valuable wetlands in the world. They trained dogs to sniff them out, they were attracted with pheromones, they implanted radio transmitters to locate their hiding places, they set traps. But after several years of experimentation, the best method they have found is the most rudimentary. “With two hands and balls of steel”
With this information, we can conclude that Federal and state authorities have attempted to eradicate Burmese pythons from the Everglades by allowing the hunting and trapping of these animals, giving rewards to these hunters.
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7 ways that invasive species affect the environment
Invasive species reduce biodiversity levels, create a nuisance, cause economic loss, and disrupt ecosystem equilibrium.
Effects of invasive speciesInvasive species tend to drive away or kill native species.Invasive species reduce the overall biodiversity of plants or animals in the ecosystem.They cause economic loss through the loss of important native species.They create nuisance in the environment and may be costly to get rid of.They affect ecosystem equilibrium by causing species change.They are usually difficult to manage.More on invasive species can be found here: https://brainly.com/question/21452505
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Tissue engineering is the ability to grow cells in a laboratory. These cells are collected
from an animal, a donor organ, or a patient's body and grown in liquid nutrients that allow
them to divide and multiply. This science explores the possibility of replacing or repairing
human body parts. How is the term engineering as used in this process applied?
By the use of:
The term engineering as used in the process of tissue engineering simply uses the principles of biomedical engineering to grow cells in the laboratory
This goes to say that tissue engineering helps to develop biological substitutes that replace or improve tissues and organs.What is tissue engineering?Tissue engineering can be defined as the process and ability to grow cells in a laboratory.
In conclusion, the term engineering as used in the process of tissue engineering simply uses the principles of biomedical engineering to grow cells in the laboratory
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Name the mineral in meat that is needed to make haemoglobin.
Which organism has membrane-bound chloroplasts and nuclei?
a. Volvox
b. Euglena
c. Oscillatoria
d. a, b, and c
e. a and b only
Answer:
euglena because it is an eukaryoteThe star in the diagram
represents which of
these?
A. origin of replication
B. replication fork
C. replication bubble
D. Okazaki fragment
Answer:
B.) Replication fork
Explanation:
The replication fork is the point at which two strands of DNA separate via DNA helicase.
The origin of replication is the site on a singular DNA strand where replication begins. Here, complementary nucleotides begin bonding to the single-stranded DNA via DNA polymerase.
The replication bubble is created when DNA helicase separates a DNA strand. The DNA helicase does not separate the entire strand, but rather opens only certain sections at one time. This creates a "bubble" in the DNA strand where replication will take place.
Okazaki fragments are formed on the lagging strand of the single-stranded DNA. Because DNA is only created from the 5' to 3' direction, RNA primase must reposition itself after adding a primer (made of nucleotides). DNA polymerase then fills in these fragments with more complementary nucleotides in small sections.
Answer: B. replication fork
Explanation:
about blood groups of different individuals. What is the importance of these different blood groups?
Kwlalzlzlzllallslslsl
Lllala
Answer:
Antigens are genetically determined—inherited from a combination of your parents' genes. There are many different blood type systems, but most people will be familiar with the two main blood groupings—the ABO and Rh (or Rhesus) systems. These systems lead to the eight commonly known blood groupings.
blood group A – has A antigens on the red blood cells with anti-B antibodies in the plasma. blood group B – has B antigens with anti-A antibodies in the plasma. blood group O – has no antigens, but both anti-A and anti-B antibodies in the plasma. blood group AB – has both A and B antigens, but no ..
Explanation:
https://www.nhs.uk/conditions/blood-groups/
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John is testing the effect of temperature on the solubility of sugar in water.
He plans to determine the mass of sugar dissolved in a saturated solution.
He will begin with a known mass of sugar and add sugar to water until the
solution is saturated. He will then calculate how much sugar dissolved by
subtracting the remaining mass from the initial mass.
He organized data about his experiment in the following table:
Volume of water
Temperature
Initial mass of
sugar
Final mass of
sugar
Group A
75 mL
25°C
1000 g
Group B
90°C
Group C
5°C
Which of the following would be the best volume of water to use in Group C?
A. 25 mL
B. 270 mL
C. 140 mL
D. 75 mL
Whats the correct answer answer ASAP for brainlist
Answer:
Australia
Explanation:
it is 2.968 million square miles, therefore making it the largest country in Oceania.
Describe the function of one component of a cell membrane. How is its shape important for this role? How do functional groups and/or intermolecular forces of attraction contribute to its shape?
Integral membrane proteins are found on cell membranes and due to their structure and polar functional groups are able to serve as transport channels.
What is the cell membrane?The cell membrane is a lipid bilayer which separates the cell contents from the external environment.
A component of the cell membrane is the integral membrane proteins which transverses the cell membrane and as such are able to serve as transport channels.
The integral membrane proteins contain hydrophilic amino acids groups with charged groups which help it to serve as binding site for polar molecules like water and ions.
The interior contains hydrophobic amino acid which enables it to interact with the lipid bilayer.
In conclusion, the structure and composition of integral membrane proteins enables them to serve as cell transporters and channels.
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Phenylthiocarbamide (PTC), also known as phenylthiourea (PTU), has the unusual property that it either tastes very bitter or is virtually tasteless, depending on the genetic makeup
of the taster. There is a single gene which codes for a protein found in our tongues. PTC will bind with the protein if it present and a person will taste it. If the protein is not present,
PTC will not bind and a person cannot taste it. The ability to taste PTC is often treated as a dominant genetic trait. The dominant allele, T, causes a person to be able to taste PTC, and the recessive allele is represented as t. Assume that a population is in Hardy-Weinberg equilibrium and 16 individuals out of 100 are unable to taste PTC.
What are the allele
frequencies of T and t in this population?
A. The allele frequency of T is 0.80, and the allele frequency of t is 0.20
B. The allele frequency of T is 0.84, and the allele frequency of tis 0.16.
C. The allele frequency of T is 0.00, and the allele frequency of t is 0.40
D. The allele frequency of T is 0.50, and the allele frequency of t is 0.50.
Answer: a
Explanation:
A
The allele frequencies of T and t in this population are the allele frequency of T is 0.80, and the allele frequency of t is 0.20. Therefore, option A is correct.
What is allele frequency ?The relative frequency of an allele at a certain locus in a population, represented as a fraction or percentage, is known as gene frequency or allele frequency. The percentage of chromosomes in the population that carry that allele relative to the whole population or sample size is what is being discussed.
In human statistical genetics, the frequency of an allele in the population is a fundamental quantity. A lot of population and medical genetic studies are based on this amount. Allele frequencies are altered by numerous evolutionary factors. As a result, allele frequencies can be utilized to guess at previous evolutionary occurrences.
The distribution of genetic variation in a population is shown by the relative genotype frequencies. The fraction of all copies of a gene in a population that carry a certain allele is known as relative allele frequency.
Thus, option A is correct.
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In which layer is lithification most likely to occur?
Answer:
Lithification is the process by which sediment turns into hardened rock. There are three ways in which lithification can occur. These processes are called compaction, recrystallization and cementation. It happens mostly in the subsoil.
Explanation:
Lithification is most likely to occur in sediments on the bottom of the ocean or other bodies of water.
What do you mean by lithification?Lithification is the process in which sediments compact under pressure, expel connate fluids, and gradually become solid rock. Essentially, lithification is a process of porosity destruction through compaction and cementation.
It refers to the process that loose and underconsolidated Sediment particles transform into hard and solid rocks. This process includes a number of geological processes, such as consolidation, deep bury, cementation, recrystallization and dehydration.
Sedimentary rocks are the product of 1) weathering of preexisting rocks, 2) transport of the weathering products, 3) deposition of the material, followed by 4) compaction, and 5) cementation of the sediment to form a rock. The latter two steps are called lithification.
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Which substance will produce an acid when dissolved in water?
A. NH3
B. NaOH
C. KOH
D. HCl
A hunting and gathering society typically had
Opermanent living sites
O access to one crop
O a large stable population
O
a wide variety of food sources
Fill in the blanks to complete each statement about igneous rock formation.
rocks form when
cools below Earth's surface.
rocks form when
cools on Earth's surface.
Plutonic or intrusive igneous rocks form when it cools below the Earth's surface.
Igneous rocks form when it cools on the Earth's surface.
How is the rock formation process?They originate from the solidification of magma inside the Earth's crust or when lava comes out of the mantle, through a volcanic eruption. When magma cools slowly inside the crust, turning into rock, a process called intrusion occurs.
With this information, we can conclude that Igneous rock or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic and Intrusive, or plutonic, igneous rock forms when magma remains inside the Earth's crust where it cools and solidifies in chambers within pre-existing rock.
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Answer:
intrusive, magma
extrusive, lava
Explanation:
edge
Study the image about geologic time. Geochronological scale Paleogene Cenozoic many types of mammals diatrima Neogene Quatemary BUNKS smiodon mammoth human During which period did humans first appear on Earth? O Quaternary O Neogene O Paleogene O Cenozoic Study the image about geologic time . Geochronological scale Paleogene Cenozoic many types of mammals diatrima Neogene Quatemary BUNKS smiodon mammoth human During which period did humans first appear on Earth ? O Quaternary O Neogene O Paleogene O Cenozoic
Answer:
A. Quaternary
Explanation:
We came around Quaternary time frame. This period is called the "Age of Humans"
Answer: Quaternary (A)
Explanation: