After examining a cell with a microscope, a student concludes that it is a plant cell.What feature did the student most likely observe that led him to this conclusion?
(a) vacuole (c) chloroplast
(b) nucleus (d) cell membrane

Answers

Answer 1

Answer:

Explanation:

The student most likely observed both (A) Vacuole and (C) Chloroplast that led him to the conclusion, that the cell is a plan cell.

Reason :

In a plant cell, Vacuole occupies 70% to 90% of the total volume of the cell, making it easier to identify.

Chloroplast contains photosynthetic pigment called chlorophyll (green in colour), which is only found in plant cell.

Answer 2

Answer:

Final answer:

The presence of chloroplasts, containing green pigment chlorophyll for photosynthesis, in the cell likely led the student to conclude it was a plant cell.

Explanation:

The student likely made his conclusion based on observing the presence of chloroplasts in the cell. Chloroplasts contain a green pigment called chlorophyll, which enables plants to undergo photosynthesis and is not found in animal cells. The others listed (vacuoles, cell membrane, and nucleus) are also present in animal cells and therefore would not specifically indicate a plant cell.

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Related Questions

While testing amylase activity, John uses a buffer of pH 6 and substrate starch. He incubates them at 104ºF (40ºC). All the tubes show glucose formation, except one, which had no starch solution. Why did this happen?A) the optimum pH for enzyme amylase is not pH 6B) the optimum temputure for the enzyme amylase is not 104. F (40.)C) the substrate for amylase, starch, is not present
Which statement best describes the liquid state of matter?
What color is used to show OXYGENATED blood?
How did Democritus contribute to the atomic theory/ structure of the atom?
Which is the electronic configuration for oxygen?1s2 2s2 2p1 1s2 2s2 2p31s2 2s2 2p41s2 2s2 2p6

Which statement is true about ionic compounds?They are made up of many large molecules that are bonded together.
They are made up of atoms of only one type of element.
They are made up of particles that are arranged in a repeating pattern.
They are made up of a random ratio of elements that are bonded together.

Answers

I believe that the best answer among the choices provided by the question isThey are made up of particles that are arranged in a repeating pattern.
Hope my answer would be a great help for you. If you have more questions feel free to ask here at Brainly.

Ionic compounds are made up of particles that are arranged in a repeating pattern. Therefore, the correct option is option C.

A specific class of chemical compound known as an ionic compound is created when two or more atoms share electrons. It is made up of anions, which are negatively charged ions, and cations, which are positively charged ions. Most frequently, ionic compounds are created when a metal interacts with a non-metal. The non-metal atom receives one or more electrons to become an anion during this reaction, whereas the metal atom loses one or more electrons to become a cation. The development of a stable ionic compound happens as a result of the electrostatic forces that draw these oppositely charged ions to one another.

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How would an electron shell model of an oxygen atom (O) appear after the atom has formed chemical bonds?a. It would have six electrons in the outermost shell.
b. It would have six electrons in the innermost shell.
c. It would have eight electrons in the outermost shell.
d. It would have eight electrons in the innermost shell.

Answers

oxygen atomic number is 8.

electron configuration of O is 2,6

therefore O has 6 valence electrons. valence electrons are electrons in the outermost shell that are involved in chemical bonds

atoms to become stable should fulfill the octet rule. This is where the outermost shell should have 8 electrons

so atoms with incompletely filled outer shells take part in chemical bonds to gain a complete octet and to become stable

So O too after forming a chemical bond would have 8 electrons in the outermost shell.

correct answer is

c. It would have eight electrons in the outermost shell.

Answer: I know I'm too late but for all you people that have an exam it is C.

Explanation:

The mass number of an isotope of uranium is 238, and its atomic number is 92. Which symbol best represents this isotope of uranium?

Answers

Answer: $_(92)^(238)\textrm{U}$

Explanation:

Isotopes are atoms of same element which have same atomic number but different mass number.

General representation of an element is given as: $_Z^A\textrm{X}$

where,

Z represents Atomic number

A represents Mass number

X represents the symbol of an element

General representation of an isotope of ursium with atomic number of 92 and mass umber of 238 and represented by the symbol U is:

$_(92)^(238)\textrm{U}$

Uranium with an atomic mass number of 238 indicates that it is highly unstable and radioactive. This is because its original number of neutrons is only 92, giving it 146 more neutrons than the usual. These isotopes are usually given symbols denoted by the element-"atomic mass". This means a symbol for this isotope is Uranium-238 or ^238U.

Which makes the phosphorus cycle different from the carbon cycles

Answers

The phosphorus cycle is different compared to the water,carbon, and nitrogen cycle because it can not be found in the gas state. Phosphorus is only found in land, water, and sediment. The phosphorus cycle is a bio-geochemical cycle that describes the movement of phosphorus through the lithosphere, hydrosphere, and biosphere. The other cycles is the process by which it is converted between its various chemical form. Phosphorus has small particles that only sometime go up into the atmosphere and contribute to acid rain but other than that phosphorus stays in and on land, sea, and sediment.(:
Good luck!

17. Which of the following is true about an electrolytic cell? It changes electrical energy into chemical energy.
It is the type of cell used in electroplating
It uses an electric current to make a nonspontaneous reaction go.
All of the above
18. The products formed in the net reaction of the electrolysis of water are ____.
aqueous hydrogen ion and hydroxyl ion
hydrogen gas and oxygen gas
liquid hydrogen and oxygen gas
liquid oxygen and hydrogen gas
19. What occurs in electroplating?
decomposition of a metal layer
decomposition of a salt layer
deposition of a metal layer on a material
deposition of a salt layer on a metal

Answers

The correct answers are:

17. All of the above
18. hydrogen gas and oxygen gas
19. deposition of a metal layer on a material

Electrolytic cells use electric currents to drive a non-spontaneous reaction forward. This is also used in electroplating which involves the movement of metal cations to the surface of another metal. Water can also undergo electrochemical reactions by splitting it into its gaseous components, hydrogen and oxygen.

Final answer:

An electrolytic cell uses an electric current to make a nonspontaneous reaction go and is used in electroplating. The products formed in the electrolysis of water are hydrogen gas and oxygen gas. Electroplating involves the deposition of a metal layer on a material.

Explanation:

An electrolytic cell is a type of cell that uses an electric current to make a nonspontaneous reaction go. This means it can drive a chemical reaction in a direction that does not occur naturally. Electrolytic cells are commonly used in electroplating, where a metal layer is deposited onto a material. Therefore, all of the given options in question 17 are true about an electrolytic cell. For question 18, the products formed in the net reaction of the electrolysis of water are hydrogen gas and oxygen gas. Electrolysis of water involves the decomposition of water into its elemental components. In electroplating, the process involves the deposition of a metal layer on a material. This is achieved by passing an electric current through a solution containing metal ions, causing the metal ions to be reduced and deposit onto the material's surface.

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Which of the following is a characteristic of proteins? A)           Some may enhance the rate of specific chemical reactions.
                B)            They may form either long, thin fibrous molecules or compact, rounded globular molecules.
                C)            They store genetic information for cellular metabolism.
                D)           They form through hydrolysis reactions.
                E)            a and b

Answers

E. Both A and B.

Enzymes, which can catalyze chemical reactions, are a type of protein. Moreover, proteins can either be fibrous and insoluble in water like actin and myacin, or globular and soluble like hemoglobin. DNA, which stores the genetic information, is not made of proteins. Lastly, proteins are made through the translation of mRNA at the ribosomes.

I hope this helps!

Final answer:

Correct answer is Option E, which includes options A and B. Proteins can enhance specific chemical reactions as enzymes and can form diverse structures. Proteins do not store genetic information and do not form through hydrolysis reactions.

Explanation:

The correct answer to this question is Option E, which are options A and B. Proteins do indeed have the ability to enhance the rate of specific chemical reactions. These are known as enzymes. Another characteristic of proteins is their diverse structure, as mentioned in option B. They can form long, thin fibrous molecules like collagen or compact, rounded globular molecules like hemoglobin. However, they do not store genetic information (that is the function of DNA and RNA), nor do they form via hydrolysis reactions. Proteins are synthesized through a process called dehydration synthesis, not hydrolysis.