Answer:
An external stimulus is a stimulus that comes from outside an organism and causes a reaction. ... Learned behavior is a response to a stimulus that an animal was taught. Being able to read and write are examples of learned behavior, because it is not something you are born able to do.
Explanation:
Scientists found members of a plant species they did not recognize. They wanted to determine if the unknown species was related to one or more of four known species, A, B, C, and D. The relationship between species can be determined most accurately by comparing the results of gel electrophoresis of the DNA from different species. The chart below represents the results of gel electrophoresis of the DNA from the unknown plant species and the four known species.
Complete question:
Scientists found members of a plant species they did not recognize. They wanted to determine if the unknown species was related to one or more of four known species – A, B, C, D. The relationship between species can be determined by comparing the results of gel electrophoresis of the DNA from different species. The chart below represents the results of gel electrophoresis of the DNA from the unknown plant species and the four known species.
Which two known plant species is the unknown plant species most closely related to?
Answer:
Species C is the most closely related, followed by species D.
Explanation:
Gel electrophoresis technique is used to separate different fragments of DNI, RNA, and other macromolecules or proteins, concerning their size/weight and charge.
Gel electrophoresis of DNI lets us visualize how many different fragments of the molecule are present in a sample and how they differ from each other. The presence of fragments of the same size will be distinguished as a line named band. Each band represents many DNI fragments of similar size placed in the same position. The result of the gel electrophoresis will be different bands in different positions according to their sizes. The biggest ones will not migrate in the gel as much as the smallest ones.
In the exposed example we can assume that the most closely related species is C. The second most similar is species D.
The gel electrophoresis of the DNA from the unknown plant species resulted in five different bands, which means five types of fragments of different sizes.
Four of the five bands expressed by the unknown species coincide with the bands of species C. Species C only lack one band to be exactly the same.Species D coincides in three bands and lack two bands to be exactly the same as the unknown species. Species A only coincides in one band. Species B does not coincide in any band, meaning that this is the most different oneFor a better understanding, look at the attached files, where you will find the chart.
Which type of junctions must there be between cells to form a barrier?
Vaccinations help prepare the body to fight invasions of a specific pathogen by
Answer:
2. Stimulating antibody production.
Explanation:
What would happen to aquatic organisms if solid water were denser than liquid water
Answer:
If water in its solid form was denser than water in its liquid form, lakes and ponds would freeze solid to the bottom during winter, and no longer provide viable habitats.
Human beings belong to .........
A. Kingdom Protista
B. Kingdom Fungi
C. Kingdom Plantae
D. Kingdom Animalia
Answer: D. Kingdom Animal
Explanation: Among other animal characteristics, humans can move on their own, so they are placed in the animal kingdom. Further, humans belong to the animal phylum known as chordates, because we have a backbone. The human animal has hair and milk glands, so we are placed in the class of mammals.
Answer:
D. Kingdom Animalia
Explanation:
Human beings belong to kingdom Animalia. So, option (D) is correct.
Each Taxonomy (category) gets less and less specific as they go further down the list.
A. True
B. False
Answer:
B. False
Explanation:
The taxonomies get more specific as you move down the line. The current eight levels go like this:
Kingdom (most general)PhylumClassOrderFamily/SubfamilyTribe/SubtribeGenusSpecies (most specific)As you can see, the taxonomies get increasingly more specific as we go further down.
please solve this!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
cbca
Explanation:
whats sex? BTW i am 15
Answer:
it is where two people who like each other do things. your 15 and dont know
Explanation:
assume that cody used a weak magnet and the flake of cereal was not attracted to it what conclusion might he have drawn?
Answer: he might have concluded that the flake of cereal was not magnetic
Explanation:
¿como realizaban el proceso de fotosíntesis los primeros organismos unicelulares?
Which of the following characteristics of life apply to bacteria?
A)They evolve
B)They reproduce
C)They use energy
D)All of the above
Answer:
All of them above
hope it helps
Answer:
It should be D
All of the above
Why does it make sense that some of the longest and most powerful muscles in the human body are located in your thighs? Pls help...
Answer:
huh? i dont know..
[extra characters]
The gluteus maximus is the largest muscle in the human body. Its role in maintaining the body's trunk in an upright position makes it big and strong.
What are muscles?Muscles are defined as a collection of muscles that contract together to generate force.
Muscle is coordinated systems of contractile tissue for better performance.
It can also be defined as an organ made of muscular tissue that moves in a specific way when it contracts.
A person's muscles enable them to move, speak, and chew.
They manage digestion, respiration, and heartbeat.
Other, seemingly unrelated systems like regulating body temperature and vision also depend on the muscular system.
There are three types of muscles.
Cardiac musclesSmooth musclesSkeletal musclesThus, the largest muscle in the human body is the gluteus maximus. Its role in maintaining the body's trunk in an upright position makes it big and strong.
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Which of the organisms shown does not eat another organism for food.
Answer:
it's cockroach it carries it
Answer:
fungi
They don't eat each other
what is a light reaction ?
Answer:
the reaction of something, especially the iris of the eye, to different intensities of light.
hope it helps
Answer:
Well
A reaction which occurs as the first phase of photosynthesis, in which energy in the form of light is absorbed and converted to chemical energy in the form of ATP.
I HOPE IT HELPS
HAVE A GREAT DAY
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During the Second Industrial Revolution, which building material became one of the most important in the world?
brick
wood
stone
steel
Protein synthesis involves (Hint...look at the diagram)
A. DNA creating mRNA which is used to make a polypeptide
B. the production of energy
C. the production of a gene and DNA
Answer:
A. DNA creating mRNA which is used to make a polypeptide
Explanation:
Protein synthesis process involves the DNA creating mRNA, which is used to make a polypeptide.
What are three benefits of vertical farming that provide an advantage over horizontal farming.
Answer:
Minimise water usage
Weather doesn't affect the crops
There is less exposure to chemicals and disease
Explanation:
NO LINKS PLEASE
In the predator-prey relationship between lions and zebras, when the population of zebras is great, the population of lions will
A. decrease
B. increase
C. stay the same
D. die off
Answer:
B. Increase
Explanation:
Since lions rely on zebras as a food source, if there are more zebras (more food sources for the lions), there will also be more lions. Therefore, the lion population would increase initally.
Explain the presence of starch in the parts of a plant that do NOT contain chlorophyll.
Answer:
In the leaf, excess glucose is rapidly converted to starch, so we test leaves for starch to show that photosynthesis has happened, rather than testing for glucose. We often indicate that light and chlorophyll are required for the process by adding them to the equation near the arrow.
What is the mass of the green cone?
Answer:
500 g
Explanation: trust
Answer:
500 g
Explanation:
i guessed:)
In humans, brown eyes are dominant to
blue eyes. What is the probability
that two heterozygous brown-eyed
parents will have a child with blue
eyes?
J. 25%
K. 50%
L. 75%
M. 100%
Answer:
j
Explanation:
since brown eyes are more dominant than blue eyes chances of it is 3/4
Answer:
The answer is J. 25%.
Explanation:
In this problem, we know brown eyes are dominant to blue eyes. We can let the dominant allele for brown eyes be represented by "B" and the recessive allele for blue eyes be represented by "b". Since it is given that both parents are heterozygous, we know that they must have the genotype Bb.
When two Bb individuals are crossed, the offspring will be 1 BB : 2 Bb : 1 bb, or 3 brown : 1 blue ratio. Therefore, 1/4 of the offspring will have blue eyes, which represents 25%. Thus, the correct answer is choice J, 25%.
Hope this helps!
somebody pls help I’m not even sure how to answer but I think it’s between a and d
Answer:
A
Explanation:
Identify two processes that from igneous rocks
Answer: Igneous rocks are formed by the melting and cooling of molten rock.
Explanation: Extrusive rocks are those that erupt as lava from volcanoes onto the surface. Intrusive rocks, on the other hand, are created when magma cools underneath.
hope this helps best of luck mate! :)
there is a decreased in the production of
Answer:
Espero sirva mi respuesta
Explanation:
Suerte
If a cell has a diploid number of 8 (2n = 8) before meiosis, how many chromosomes will be in each of the four daughter cells after meiosis II if one pair of homologous chromosomes experiences nondisjunction in meiosis I? Show how you got the answer by drawing out the process, starting with the diploid cell undergoing meiosis I (where nondisjunction occurs) and then meiosis II to get the four daughter cells.
Answer:
The final product is four gametes, two of them with 5 chromosomes, and the other two with 3 chromosomes each.
Explanation:
If nondisjunction occurs during meiosis 1, a pair of homologous chromosomes fail to separate, and one of the daughter cells will have the two chromosomes while the other cell will not get any chromosome from the pair.
If meiosis 1 occurs normally, but nondisjunction occurs in meiosis 2, sister chromatids fail to separate.
The usual process of meiosis produces four daughter haploid cells (n) from a diploid germ cell (2n). Each daughter cell is haploid because they have half the number of chromosomes of the original one.
If the diploid number of the original cell is 8 (2n=8), then under normal conditions, each haploid daughter cell should have 4 chromosomes (n = 4).
But in the exposed example, one pair of homologous chromosomes experiences nondisjunction during meiosis I (in the attached file, you will recognize this pair as the red one). The other chromosomes separate as usual. So one of the daughter cells will have one extra chromosome than expected (five instead of four), and the other daughter cell will lack one chromosome (three instead of four). Meiosis II occurs normally. The final result is the formation of four gametes, two of them with 5 chromosomes, and the other two with 3 chromosomes each.
insulin and glucagon are produced in the;
Experimental Scenario
Donna has observed that her father can control the speed of their grandfather clock by adjusting the
height of the weight on the end of the pendulum. Donna thinks that the pendulum will move faster
when the weight is lowered, and wants to test her idea. Donna gets a stopwatch and measures the
time it takes for the pendulum to swing twenty times when the weight is moved to its lowest position.
Donna begins to move the pendulum up by 1 cm and continues to measure the time for twenty swings
of the pendulum. Donna records her data
SCI 1.4 Investigation Plan
1) Provide a brief description of the methods that are being used to run the experiment
Answer:
Reduce the mass and measure the speed of pendulum.
Explanation:
First measure the swings of the pendulum at its original weight. After that some weight is removed from the pendulum and again measure the number of swing of pendulum at specific time period. We have to reduce mass of pendulum and then measure the number of swings. In this way, this experiment moves forward and we can find out the impact of mass on the speed of pendulum.
Why do Galapagos sharks lie still on the ocean floor?
O A. They are being social.
OB. Scientists still don't know why.
O C. They are sleeping.
OD. They are waiting for food.
Answer:
Either B. or D.
Explanation:
I don't know for sure, these two answers just seem better than the others.
solute concentration
is higher outside the
cell causes the cell
shrink.
If these are your answer choices -
A. Hypertonic solution
B. Isotonic solution
C. Hypotonic solution
D. Both A and C
then your answer is:
Correct option is - A
Hypertonic solution
A hypertonic solution is a particular type of solution that has a greater concentration of solutes on the outside of a cell when compared with the inside of a cell. Water crosses the cell membrane in both directions, but more water leaves the cell than enters it. Therefore, the cell will shrink due to exosmosis.
Which of the following best describes the role of scientific knowledge in society?
a.
Advances in scientific knowledge have predictable consequences.
b.
Advances in scientific knowledge can be beneficial to society if applied responsibly.
c.
Advances in scientific knowledge lead to few changes in society.
d.
Society is uninfluenced by advances in scientific knowledge.
Answer:
b
Explanation:
edg 2021
The role of scientific knowledge in society is that the advances in scientific knowledge can be beneficial to society if applied responsibly. Thus, the correct option will be B.
What is the role of Scientific knowledge?Scientific knowledge is referred to as a generalized body of laws and theories which are used to explain a phenomenon or a behavior of interest that are acquired by people using the scientific method and knowledge.
Laws are observed patterns of phenomenon or behaviors, while the scientific theories are systematic explanations of the underlying phenomenon or the behavior observed.
The role of scientific knowledge in society is that the advances in the scientific knowledge can be beneficial to the society as a whole if applied responsibly.
Therefore, the correct option will be B.
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