What feature of cell theory is best demonstrated in the image?
A.
Organisms have cells with different shapes and functions.
B.
Cells are formed from other cells.
c. Organisms are made up of a large number of cells.
D.
Cells are the basic units of structure and make up tissues.
Answers
Answer:
Option (C).
Explanation:
Cell theory states that all organisms are consist of cells and it is the structural and functional unit of life. All cells comes from the already present pre-existing cells. Cell theory was given by Schleiden and Schwann.
The image shown in the question shows that organisms are made up of large number of cells. Living organisms constitute different types of cells.
Thus, the correct answer is option (C).
Related Questions
the polymer of proteins is called
Answers
Answer:
proteins are polymers made of monomers called amino acids
Explanation:
Protein is a polymer made up of Amino acids.
What are Amino Acids?
Amino acid is a compound that consist of an amino group, carboxyl group, and a specific side chain.There are 20 essential amino acids forming protein.Many amino acid connect together by a series of peptide bond to form a protein.Hence, we come to a conclusion that protein is a polymer made up of many amino acids joined together by peptide bond.
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U1:51:51
Which has most likely been peer reviewed?
an article on the benefits of eating cheese, featured in Crosscreek Dairy Monthly magazine
an article on the benefits of wearing shoe inserts, featured in Bob's Footwear circular
an article on the beneficial bacteria in yogurt, featured in Medical Joumal of Gastroenterology
an article on beneficial face creams, featured in Beauty and You magazine
Save and Exit
Submit
Mark this and return
Answers
Answer:tap in shorty
Answer:
Option C is correct,an article on the beneficial bacteria would be most likely to be reviewed.
What does excessive algae on water cause?
When algae cover a river surface, it causes depletion of oxygen in water. This is known as____
Answers
Excessive algae on water causes depletion of oxygen in the water, a process known as eutrophication. This occurs when excess phosphorus and nitrogen from fertilizer runoff and sewage lead to the growth of algae, which depletes dissolved oxygen and results in the death of aquatic organisms.
Explanation:Excessive algae on water causes depletion of oxygen in water. This is known as eutrophication. Excess phosphorus and nitrogen from fertilizer runoff and sewage enter aquatic ecosystems and lead to the excessive growth of algae. When the algae die and decompose, it depletes dissolved oxygen, causing the death of aquatic organisms like fish and shellfish. This process is responsible for dead zones in lakes and rivers and massive fish kills.
What increases the frequency of adaptive mutations in a population over time
Answers
Answer:
Natural selection
Explanation:
Natural selection is the process via which the frequency of adaptive mutations in the population increases. In adaptive mutations, the mutational changes that are caused through natural selection, make individual to survive better in that particular environment when passes through stress conditions like temperature, drought etc. through natural selection the fittest of all is selected (the one that had adapted in that environment).
Which part of the plant contains the most cells specialized for photosynthesis?
roots
stems
leaves
flowers
Answers
ANSWER:
Leaves of a plant contain cells specialised for photosynthesis. The leaves are called "food factories of plants" because they prepare food for the plants.
EXPLANATION:
Leaves contain chlorophyll which is a "green coloured pigment" that traps sunlight required for making food. The leaves with the help of water transported from roots through the xylem, sunlight and carbon dioxide prepare food for the plants. The food is transported to other parts of the plant through the phloem and oxygen is released by the plants.Answer:
C
Explanation:
leaves
Mycelium allow fungilto absorb more nutrients by providing a higher surface to area ratio. True or false
Answers
Answer:
The Answer is True:
Explanation:
What cell makes ribosomes
Answers
Answer:
The Nucleolus makes ribosomes.
Explanation:
A new organism has been discovered. This organism has a bilaterally symmetric unsegmented body. It's capable of moving on its own with a muscular appendage and is encased in a large shell that seems to be attached to its body. Based on this evidence, which phylum would this new animal likely be classified into?
A. Mollusca
B. Echinodermata
C. Nematoda
D. Arthropoda
Answers
Answer:
The correct answer option is A. Mollusca.
Explanation:
We are given that a new organism has been discovered which has a bilaterally symmetric unsegmented body and is capable of moving on its own with a muscular appendage and is encased in a large shell that seems to be attached to its body.
Given the above information, we are to determine which class this phylum can be classified into.
The most appropriate answer for this is Mollusca. Here, the description matches that of a snail.
Other classifications like arthropoda have segmented bodies while echinodermata are symmetrical.
Answer:
A. Mollusca
Explanation:
Mollusca is the second-largest phylum of invertebrate animals. The members are known as molluscs or mollusks. Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high
How do you extract the oil from the fruit of the Tung tree?
Answers
Answer:
Tung oil is made from pressed seeds from the nut of the tung tree. The tung tree, native to China, is named for its heart-shaped leaves because “tung” is Chinese for “heart.” In the 14th century, Chinese merchants were noted for using tung oil to waterproof and protect wooden ships from the eroding powers of the sea. There are even mentions of tung oil appearing in the writings of Confucius in around 400 B.C. For these reasons, it is also sometimes referred to as “China wood oil.
Explanation:
To extract oil from Tung tree seeds, the seeds are either pressed or crushed, or, for more efficiency, a solvent like n-hexane is used. The solvent is then distilled off, leaving the Tung oil. Traditional methods might involve boiling and skimming the oil from the surface.
Initially, Tung fruit is harvested and the seeds inside are collected because the oil is contained within these seeds. The seeds might be dried and then crushed or pressed to release the oil. However, for higher efficiency, chemical solvents such as n-hexane can be used to extract the oil from the seed material. After extraction, the solvent is distilled off, leaving behind the Tung oil, which can then be further processed and purified.
Why did Mendel use pea plants in his experiments? A. They are haploid organisms.
B. They have no chromosomes.
C. They self-fertilize.
D. They have no recessive traits.
Answers
Answer:
C. They self-fertilize
Explanation:
A is wrong: they are diploid
B is wrong: it definitely has chromosomes
D is wrong: since it has chromosomes it can potentially have recessive traits
which is a purine base in dna
Answers
Purines and Pyrimidines are nitrogenous bases that make up the two different kinds of nucleotide bases in DNA and RNA. The two-carbon nitrogen ring bases (adenine and guanine) are purines, while the one-carbon nitrogen ring bases (thymine and cytosine) are pyrimidines.
1. Do you think it is fair that Watson and Crick were credited with the discovery when so many other scientists were involved? Why or why not? Think about your opinion and then back it up with at least one fact. (10 points) APEX
Answers
Answer:
Yes, I agree that the discovery of DNA model by Watson and Crick took help from the work of many other scientists which were not credited with the discovery as much as both of them were credited.
Explanation:
One of the major breakthroughs made in the discovery of DNA structure was the work of a female scientist, Rosalind Franklin who did X-ray crystallography according to which DNA was helical in shape. Watson and Crick took strong support from this theory and proved that DNA was helical in shape. However, she was a perfectionist and she had not published her work yet while the Watson and Crick were fast enough to do so. Before that Watson and Crick while working independently formulated incorrect DNA models in which bases were placed outside while phosphate groups were outside. However, Rosalind Franklin's work was of substantial help to both of them. There was another colleagues of Franklin, Maurice Wilkins who was working with Franklin in doing X-ray studies. n 1962 Watson, Crick, and Maurice Wilkins were jointly honored with the Nobel Prize in medicine for their model of DNA in 1953 but she was not nominated for Nobel price because it could only be shared by three scientists maximum and Franklin was died by that time too.
Therefore, i think it was not fair with Franklin that she never received the credit of the work which she did tirelessly and which became basis of modern DNA model.
Hope it helps!
No, it is not fair that Watson and Crick were only credited with the discovery of the DNA model.
What is Watson and Crick's model of DNA?Watson and Crick proposed a model of DNA in 1953 which is semi-conservative in nature. This model of DNA has a double helix that is bound together with the help of units known as bases.
During the time of Watson and Crick, Erwin Chargaff proposed the rule of base pairing which is also seen in Watson and Crick's model of DNA. According to him, the amount of adenine is always equal to the amount of thymine, and the amount of guanine is always equal to the amount of cytosine.
[A] = [T] and [G] = [C]
Therefore, Watson and Crick were not the only ones who were credited with the discovery of the DNA model.
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Which source contains most of earths fresh water
Answers
Answer:
A large portion of Earth's crisp water is secured away in the polar tops. A large portion of the rest is ground water. All things considered, there are three primary wellsprings of crisp water: groundwater, the water in lakes and waterways and the water tied up in the strong state as ice.
Fresh water is the water found either in the form of liquid or ice, which has low content of salts. Lakes, river, ponds, glaciers, are some examples of fresh water bodies.
The majority of the world's fresh water is stored in icecaps and glaciers.
Sources contain fresh waterFresh water is the only water that can be consumed.Only about 0.3% fresh water is present in the earth surface.Over 68% of fresh water on earth is found in icecaps and glaciers.Over 30% of fresh water is present in groundwater.Thus, the most of the fresh water of earth is present in icecaps and glaciers.
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In most cells, there are more ______ molecules inside the cell and more sodium molecules outside the cell.
Answers
Answer:
it as more organic molecules inside
The expression 40x2 – 65x + 50 represents the sum of the interior angles of a regular pentagon in degrees. If the interior angles of the pentagon are equal, which expression represents the measure of two angles?
2x2(20 – 32x + 25x2)
2(8x2 – 13x +10)
5x2(8x2 – 13x + 10)
5(3x2 – 8x + 5)
Answers
Answer:
2(8x^2-13x+10)
Explanation:
There are 5 angle s in a pentagon and we are assuming are pentagon is a regular one so the angles are all congruent.
Let's let A represent the measurement of one of the those angles in our pentagon.
The sum of our angles in our pentagon would then be A+A+A+A+A or 5A.
But we are also given that this equals 40x^2-65x+50.
So that means 5A=40x^2-65x+50.
If we divide both sides by 5 we can find what one of our angles is in terms of x. So let's do that A=8x^2-13x+10.
So we want to know the sum of two our angles, we want to know what is A+A or 2A. 2A=2(8x^2-13x+10). To obtain that I just multiplied both sides of A=8x^2-13x+10 by 2.
Answer:
5(3x2 – 8x + 5)
Explanation:
It's D on edg 2020
Which of the following is true of conifers?
The sporophytes grow directly from the gametophyte
The spores release from the gametophyte
The gametophytes grow directly from the sporophyte
The spores release from the male cones
I NEED HELP ASAP
Answers
Answer:
The gametophytes grow directly from the sporophyte - third choice
Answer:
The correct answer is The gametophytes grow directly from the sporophyte.
Explanation:
Conifers are a group of plants that belong to what is called Pinophyta.
They abound in quantity in cold areas although many different types of this plant can also be found in tropical areas.
They are formed by live gemnosperm plants, this means that their seeds do not form in closed cavities but are "naked". These seeds are evergreen, this means that their leaves will not fall throughout the year and usually live for more than two years or produce other seeds again.
Gametophytes are haploid plants that are usually located in or below the soil and are responsible for producing gametes.
These grow directly from the sporophyte, which is the phase in which a plant reproduces by spores.
So we can say that the correct answer is The gametophytes grow directly from the sporophyte.
What happens during inhalation? A. The diaphragm and the rib cage return to their normal resting positions. B. The diaphragm contracts and moves down while the rib cage moves up and out. C. The diaphragm expands and moves up while the rib cage moves up and out. D. The diaphragm contracts and moves down while the rib cage moves down and in.
Answers
Match each biodiversity problem with the most appropriate solution. reforestation classifying the species as endangered construction of a wildlife corridor bioremediation A large highway prevents yellow-spotted salamanders from traveling to their breeding grounds. arrowBoth A population of channel catfish is threatened by a high level of pollution in a river. arrowBoth The hawksbill sea turtle is in decline because of excessive hunting and exploitation. arrowBoth The loss of vegetation in a forest reduces the survival rate of eastern bluebirds. arrowBoth
Answers
Answer:
A large highway prevents yellow-spotted salamanders from traveling to their breeding grounds - Construction of wildlife corridor
The hawksbill sea turtle is in decline because of excessive hunting and exploitation - Classifying the species as endangered
A population of channel catfish is threatened by a high level of pollution in a river - Bioremediation
The loss of vegetation in a forest reduces the survival rate of eastern bluebirds - Reforestation
Explanation:
This biodiversity problem can be solved by Construction of wildlife corridor.
The hawksbill sea turtle is in decline because of excessive hunting and exploitation.This is an example of Classifying the species as endangered.
A population of channel catfish is threatened by a high level of pollution in a river.Bioremediation can be used to solve this biodiversity problem.
The loss of vegetation in a forest reduces the survival rate of eastern bluebirds.This is an example of Reforestation
What are wildlife corridor?Large bridges covered with trees and shrubs that go over freeways for wildlife to cross are known as wildlife corridors. These wildlife corridors are being created to let let wildlife move safely from one area to the next.
What are endangered species?An endangered species is a species that is very likely to become extinct in the near future. Endangered species may be at risk due to factors such as habitat loss, poaching and invasive species.
What is bioremediation?Bioremediation broadly refers to any process wherein a biological system, living or dead, is employed for removing environmental pollutants from air, water, soil, flue gasses, industrial effluents .
What is reforestation?Reforestation is the natural or intentional restocking of existing forests and woodlands that have been depleted, usually through deforestation.
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The picture represents the excretory system.
Which is represented by the X?
nephron
ureter
bladder
urethra
Answers
Answer:
I think it's that it's ureter
Answer: Ureter
Explanation:
Ureter can be defined as the structure which is a part of excretory system of the body. They are made of smooth muscle fiber that functions by propelling the urine from the kidney to the urinary bladder.
It is usually 25-30 cm long and 3-4mm wider in the dimensions.It is lined by the urothelium which is a type of transitional epithelium and an extra layer of smooth muscle that favors the peristalsis.
The correct answer is option B
Plant and animal cells both have cell membranes and nuclear
membranes. However, plant cells have a structure that animal cells
do not known as a:
Answers
Plant and animal cells both have cell membranes and nuclear membranes. However, plant cells have a structure that animal cells do not know as chloroplasts.
Is the chloroplast in plant and animal cells?
Chloroplasts are found in plant cells, but not in animal cells. The purpose of the chloroplast is to make sugars that feed the cell's machinery. Photosynthesis is the process of a plant taking energy from the Sun and creating sugars.
Do both plant and animal cells have cytoplasm a membrane and a nucleus?Both plant and animal cells are eukaryotic, so they contain membrane-bound organelles like the nucleus and mitochondria.
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_3. In which of the following organelles is a cell's ATP produced?
a. mitochondrion b. endoplasmic reticulum c. Golgi ap
Answers
Answer:
Mitochondria.
Explanation:
It's the powerhouse of the cell :) But really, the mitochondria is the main source of power and energy for the cell.
What was the purpose of mendel’s experiments with dihybrid crosses
Answers
Final answer:
Mendel's experiments with dihybrid crosses were conducted to test the hypothesis of independent assortment. He crossed pea plants with different pairs of traits to determine if these traits are inherited together or independently. The results showed that traits segregate independently during sex cell division, leading to Mendel's law of independent assortment.
Explanation:
Mendel's experiments with dihybrid crosses had the purpose of testing the hypothesis of independent assortment. By crossing pea plants with different pairs of traits, such as yellow round seeds and green wrinkled seeds, Mendel was able to determine if these traits were inherited together or independently.
The results of his dihybrid crosses showed that traits segregate independently during sex cell division. This led to the formulation of Mendel's second law of inheritance, known as the law of independent assortment.
what physical traits were favored in the peppered moth species after the Industrial Revolution
Answers
Their skin color was dark which made the moths blend in. During the Industrial Revolution, the soot from factories caused the trees to become black. The light colored moths became easier to kill because they could not blend into their environment.
Answer:
Dark Skin Color
Explanation:
After the industrial revolution, the tree trunks got covered with dark soot and the lichens present on these tree trunks were killed. Under these polluted conditions, the dark-colored moth could blend themselves easily with soot-covered tree trunks. Hence, these dark-colored moths exhibit better survival and reproductive rate than the light-colored moth population.
So, natural selection favored light skin color after the industrial revolution.
What is the basic molecule in chromosomes?
Answers
Answer:
DNA
Explanation:
DNA is the basic molecule in chromosomes.
Soil formation is most influenced by__. Wind speed. Cloud cover. Air pressure. Rain fall.
Answers
Answer:
D. Soil formation is most influenced by Rainfall.
Explanation:
Answer:
Rain fall.
Explanation:
Soil formation is most influenced by rain fall.
what is a pollutant?
Answers
Explanation:
a substance that pollutes something, especially water or the atmosphere
A pollutant is something that makes water or air polluted.
To which of the following organic compounds do nucleic acids belong?
A. nuclear compound
B. hydrogen compound
C. carbon compound
D. nitrogen compound
Answers
Answer:
B. hydrogen compound
Explanation:
Nucleic acids belong in a hydrogen compound.
Nucleic acids should only be placed in that group because of the amount of harm or impact it doers.
What happens when a population is in hardy-Weinberg equilibrium?
A. mutations are common
B. Organisms produced of organisms produced no offspring
C. Allele frequency is stable
D. There are infinitely alleles
Answers
Answer:
C; Allele Frequency is stable.
Explanation:
When a population is in Hardy-Weinberg equilibrium, there are five conditions within that: 1) no mutations, 2) random mating among organisms, 3) no gene flow (meaning no exchange of alleles among different populations through either immigration or emigration), 4) large population size and 5) no natural selection. If there can be no mutations in the alleles, no gene flow and no natural selection, then the allele frequencies of a population in Hardy-Weinberg equilibrium must be stable with no fluctuations.
Answer:
C. Allele is stable
Explanation:
How does the acidity of soil affect flower growth?
Answers
Soil pH can affect plant growth in several ways. Bacteria that change and release nitrogen from organic matter and some fertilizers operate best in the pH range of 5.5 to 7.0 making this the optimum pH range. Plant nutrients leach from the soil much faster at pH values below 5.5 than from soils within the 5.5 to 7.0 range. In some mineral soils aluminum can be dissolved at pH levels below 5.0 becoming toxic to plant growth. Soil pH may also affect the availability of plant nutrients. Nutrients are most available to plants in the optimum 5.5 to 7.0 range. PH can also affect the structure of the soil, especially in clay soils. In the optimum range clay soils are granular and easy to work with. However, if the soil is either extremely acid or alkaline clay, soils tend to become sticky and hard to cultivate.
A pH soil test will tell you whether your soil is within the optimum range or whether it will need to be treated to adjust the pH level. Although the optimum range is 5.5 to 7.0 some plants will grow in a more acid soil and some at a more alkaline level.
PH is not an indication of fertility, but it does affect the availability of fertilizer nutrients. The soil may contain adequate nutrients yet plant health may be limited by an unfavorable pH level. On the other hand, builder’s sand, which is devoid of nutrients, may have optimum pH for plant growth.
Answer:
Asking a question
Explanation:
When your pH becomes out of balance (too basic or acidic) how will it affect you? A. Your cells will lose their membrane permeability. B. You will get severe heartburn. C. Your proteins and enzymes will lose shape and stop functioning. D. You will crave greasy foods like french fries to balance your pH.
Answers
Answer:
B
Explanation:
Too much acidic environment is what causes heart burn for many people and the solution could be taking milk of magnesia which is a base
In case of pH disbalance, the proteins and enzymes will lose shape and stop functioning. The correct option is C.
What are proteins?Proteins are massive, complex molecules that perform numerous important functions in the body.
As enzymes are also proteins, in case of any pH disbalance or temperature changes, protein will loose their shape and will stop functioning.
Thus, the correct option is C.
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