take an onion and one jam bottle insert the roots of onion in the jam bottle for five days . after five days observe the growth in the roots of onion which is submerged in jam bottle. write observation here

Answers

Answer 1

Answer:

It is noticed that after five days, there is elongation of the root cells in the roots of onion in the jam bottle

Explanation:

It is noticed that after five days, there is elongation of the root cells in the roots of onion in the jam bottle. The growth of a plant is due to the availability of the growing and  dividing cells in the meristematic regions of the apical meristems. (stem cells). This site are active site for elongation and differentiation  of the stem tissues. In the apical meristem of the root cells, the cells have the potential to carry out mitosis and cell division repeatedly in order to generate newer cells for extension and development of stems and leaves. With each cell division, one cell remains in the meristem which the other increases in size and differentiate due to different genomic expression to form the meristem regions which eventually becomes the stem structure.


Related Questions


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How many neutrons are present in 4.4 gram of Co2​

Answers

Explanation:

hope it will help you Mark me as a brilliant

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potassium permanganate + water = ? which product will they form,and in which phase is it?​

Answers

KMnO4 + H2O = MnO2 + O2 + KOH

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when an atom gains an electron,what charge does the ion have

Answers

Answer:

if an atom gains an electron, the ion has negetive charge

0.10 moles of sodium sulfate is dissolved into 12 mL of solution. What is the molar concentration of the solution?
Your answer should have two significant figures (round your answer to one decimal place).

Answers

the molar concentration should be atleast 5mL off the solution since its disolved

Answer:

8.3

Explanation:

Convert mL to L.

12 mL×1 L1000 mL=0.012 L

Solve for molarity.

Molarity=moles of solute

liters of solution=0.10 mol0.012 L=8.3 M

career in chemistry list ten

Answers

Answer:

Analytical Chemist

Forensics

Toxicologist

Biochemist

Chemical Engineer

Laboratory Technician

Pharmacologist

Chemical Technician

Materials Scientist

Environmental Chemist

Research scientist
Chemical engineer
Toxicologist
Analytical chemist
Chemistry teacher
Forensic scientist
Hazardous waste chemist
Water chemist
Geochemist
Pharmacologist

What is the voltage of an electrolytic cell with nickel and copper electrodes?
A. -0,09 V
B. 0.59 V
C. 0.09 V
D. -0.59 V
SUBMIT

Answers

Answer:

The answer is D. -0.59V

Explanation:

Answer:

-.59v

Explanation:

Which metal can replace another metal in a reaction?
A. Any metal on the list can replace any other metal also on the list.
B. A metal on the activity series list will replace one that is not on the
list.
C. A metal lower on the activity series list will replace one that is
higher
D. A metal higher on the activity series list will replace one that is
Tower

Answers

Answer:

D

Explanation:

The atoms of the more reactive metal push their electrons on to ions of the less reactive metal.

Sarah measures out 151 grams of SO2. How many moles is this? Express your answer to three significant figures.

Answers

Answer:

[tex]\boxed {\boxed {\sf 2.36 \ mol \ SO_2}}[/tex]

Explanation:

We are asked to convert grams to moles. We will use the molar mass and dimensional analysis to perform this conversion.

1. Molar Mass

The molar mass is the mass of 1 mole of a substance. These values are found on the Periodic Table because they are equivalent to the atomic masses, but the units are grams per mole instead.

We are given a mass of sulfur dioxide (SO₂). Look up the molar masses of the individual elements.

Sulfur (S): 32.07 g/mol Oxygen (O): 15.999 g/mol

Notice that the formula of the compound contains a subscript. The subscript after O means there are 2 moles of oxygen in 1 mole of sulfur dioxide. We must multiply oxygen's molar mass before adding sulfur's.

O₂: 15.999 * 2 = 31.998 g/mol SO₂= 32.07 + 31.998 = 64.068 g/mol

2. Convert Grams to Moles

Now we will use dimensional analysis to convert grams to moles. From the molar mass, we know there are 64.068 grams of sulfur dioxide per mole, so we can set up a ratio.

[tex]\frac {64.068 \ g \ SO_2} {1 \ mol \ SO_2}[/tex]

We are converting 151 grams to moles, so we multiply by this value.

[tex]151 \ g \ SO_2 *\frac {64.068 \ g \ SO_2} {1 \ mol \ SO_2}[/tex]

Flip the ratio so the units of grams of sulfur dioxide cancel.

[tex]151 \ g \ SO_2 *\frac {1 \ mol \ SO_2}{64.068 \ g \ SO_2}[/tex]

[tex]151 *\frac {1 \ mol \ SO_2}{64.068 }[/tex]

[tex]\frac {151}{64.068 } \ mol \ SO_2[/tex]

[tex]2.356870825 \ mol \ SO_2[/tex]

3. Round

The original measurement of grams (151) has 3 significant figures, so our answer must have the same. For the number we calculated, that is the hundredth place. The 6 in the thousandth place tells us to round the 5 in the hundredth up to a 6.

[tex]2.36 \ mol \ SO_2[/tex]

151 grams of sulfur dioxide is approximately 2.36 moles of sulfur dioxide.

the ___ of a chemical reaction shows how much product was actually made compared with the amount of product that was expected.
O A. actual yield
OB. percent yield
OC. atom economy
D. exponential yield

Answers

ANSWER

a. actual yield

Explanation:

The amount of product generated by a chemical reaction is its actual yield. This yield is often less than the amount of product predicted by the stoichiometry of the balanced chemical equation representing the reaction (its theoretical yield).

Which of the following should NOT be used to hold chemicals while they are being heated?

Question 5 options:

test tube


weigh boat


beaker


crucible

Answers

Answer: Weigh boat

Explanation:

they are disposable and will likely melt

Weigh boat among the following  should not be used to hold chemicals while they are being heated ,therefore option (b) is correct.

What do you mean by weigh boats ?

Weigh boats are ideal for general-purpose weighing, evaporating, dispensing, and storing applications. Compatible with balances and dryers, these pans support precise measurements.

A weigh boat is an open container often used in chemistry and bio chemistry. It is used if you want to weigh a sample very accurately.

A weigh boat is an object that is used to protect your balance from any object you want to weigh.

Weigh boat among the following  should not be used to hold chemicals while they are being heated ,hence option (b) is correct.

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What types of mixtures are these?

Answers

Explanation:

Homogeneous Mixture:-

A cup of tea and sugarFood coloring dissolved in water

Heterogeneous Mixture:-

Peanuts and almonds mixed together in a bowlA bucket full of sand and gravel

What are the properties of alkynes

Answers

These double-bonded compounds are colourless and odourless in nature. ...
Solubility. The alkenes are insoluble in water due to their nonpolar characteristics. ...
Boiling Point. The boiling points of the compounds increase as the number of carbon atoms in the compound increases. ...
Melting Point. ...
Polarity.
Alkynes are nonpolar, unsaturated hydrocarbons with physical properties similar to alkanes and alkenes. Alkynes dissolve in organic solvents, have slight solubility in polar solvents, and are insoluble in water. Compared to alkanes and alkenes, alkynes have slightly higher boiling points.

Alkenes are chemically more reactive than alkanes.
This because alkenes are unsaturated hydrocarbons that have a double bond, C=C, between two carbon atom.
Almost all of the chemical reactions of alkene occur at the double bond.

what is second explain it briefly​

Answers

Explanation:

it is that when an object is moving 25 m per sec to calculate its time we can simply divide 1.5 by 25 and multiply by 1

5 (01.01 LC)
Which of the following would be a warning sign that information about a weight loss medication is not reliable science?

Answers

Answer:

The scientists and all test subjects involved in the investigation work for the company that sells the medication.

Explanation:

The options are as below:

A. The investigation compared a group that took the medication to a control group that did not take the medication.

B. The scientists and all test subjects involved in the investigation work for the company that sells the medication.

C. The weight loss medication worked for 95 out of the 100 test subjects, while only 15 of the 100 control subjects lost weight.

D. The weight loss results were replicated by scientists conducting a study at an independent institution

The correct option would be that the scientists and all test subjects involved in the investigation work for the company that sells the medication.

When selecting the test subjects for research, the selection must be as random as possible so as to ensure an unbiased outcome and increase the reliability of the research.

Limiting the test subjects to those that work in the company that sells the medication will generally reduce the reliability of the outcome because of element of bias that can be introduced either knowingly or unknowingly.

The test subjects must have been selected from the general population of target users for the medication and not limited to just the employees of the manufacturing company.

Correct option: B

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How do scientists use ice to study ancient climates?


A. through glacial deposits and ice cores

B. through glacial deposits and ice ages

C. through ice cores and pollen grains

D. through pollen grains and ice ages



Which greenhouse gas is produced by commercial refrigeration and air conditioning systems?


A. carbon dioxide

B. fluorinated gas

C. nitrous oxide

D. methane

Answers

Q1. A.

Q2. Nitrous oxide

Hope this helped ♥︎

Explanation:

the first question's answer is a

the second question's answer is c

How many moles of lithium are in 83 grams of lithium? pls answer :(

Answers

Explanation:

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2. Bottled Italian salad dressing is an example of *
O a suspension
a colloid
a solution
O a homogeneous mixture

Answers

a suspension, which is a heterogeneous mixture. it has different parts.

Which option describes the structure of the electron shells in a neutral carbon atom? (1 point)
O The inner shell is complete with four electrons. The outer shell is incomplete with two electrons.
O The inner shell is incomplete with three electrons. The outer shell is incomplete with three electrons.
O The inner shell is complete with three electrons. The outer shell is incomplete with three electrons.
O The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.

Answers

Answer:

The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.

Explanation:

There can only be 2 electrons on the first (inner) shell, so it would be complete with two and there needs to be 8 electrons on the outer shell for it to be complete, so it would be incomplete with 4.

Hope this helps :)

Answer:

(Question 1) Metallic bonds are responsible for many properties of metals, such as conductivity. Why is this possible?

(Answer) The bonds can shift because valence electrons are held loosely and move freely.

(Question 2) Between which types of elements do ionic bonds occur, and how do electrons act within the bond?

(Answer) metals and nonmetals, electrons transferred

(Question 3) Which kind of bond would occur between sodium (Na, Group IA) and chlorine (Cl, Group VIIA)?

(Answer) ionic

(Question 4) Why is carbon said to provide a “backbone” in many molecules?

(Answer) Carbon atoms can form chains and branches with each other, and other atoms can attach to these.

(Question 5) Which option describes the structure of the electron shells in a neutral carbon atom?

(Answer) The inner shell is complete with two electrons. The outer shell is incomplete with four electrons.

Explanation:

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Questions
1 Explain why a solid expands when it is heated.
2 Explain how the liquid in a thermometer changes so that it can be used to
measure a temperature.
3 Use particle theory to explain why solids and liquids cannot be compressed
(squashed into a smaller volume).
4 Use particle theory to explain why liquids and gases can flow.​

Answers

Answer:

answer of question 1 is

Explanation:

solids are denser than liquid and gases because solid particles are closely packed and do not have any empty spaces between their particels so when  solid will heated its particles will spread  and there will have more spaces between them  so a solid expand on heating.        

What does the second law of thermodynamics say about entropy?
A. Only changes in entropy can be measured.
B. Entropy cannot be created or destroyed.
C. The entropy in a system and its surroundings tends to increase.
D. The entropy in a system is zero at equilibrium.​

Answers

Answer:

The second law of thermodynamics states that the total entropy of an isolated system can never decrease over time, and is constant if and only if all processes are reversible.

Explanation:

Isolated systems spontaneously evolve towards thermodynamic equilibrium, the state with maximum entropy. hope this helps you :)

The second law of thermodynamics say about entropy The entropy in a system and its surroundings tends to increase.

What is second law of Thermodynamics?

According to the second law of thermodynamics, Entropy of the universe keeps on increasing overtime. When the entropy decreases and enthalpy increases the free energy change,  ΔG, is positive and not spontaneous, and it does not matter what the temperature of the system is. Temperature comes into play when the entropy and enthalpy both increase or both decrease. The reaction is not spontaneous when both entropy and enthalpy are positive and at low temperatures, and the reaction is spontaneous when both entropy and enthalpy are positive and at high temperatures. The reactions are spontaneous when the entropy and enthalpy are negative at low temperatures, and the reaction is not spontaneous when the entropy and enthalpy are negative at high temperatures.

Therefore, The second law of thermodynamics say about entropy The entropy in a system and its surroundings tends to increase.

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50. Carbon mono-oxide can be prepared by heating following substance with Conc. H2SO4. a. Oxalic acid b. Acetic acid c. Ethanoic acid d. All ic 252​

Answers

A

Carbon monoxide gas can be prepared in lab by heating formic acid or oxalic acid with conc. H2SO4.

Procedure: Small amount of oxalic acid crystal is taken in a round- bottomed flask and all the apparatus are fitted as shown in figure. When conc. H2SO4 is poured in the flask through thistle funnel and heated then a mixture of CO and CO2 gas is formed. The mixture of gas is passed through a bottle containing NaOH solution where the CO2 gas is absorbed by NaOH.

2NaOH + CO2 → Na2CO3 + H2O

The pure CO gas is then collected in a gas jar by downward displacement of water.

How do weathering and deposition differ? Weathering breaks down rocks; deposition leaves them in new places. Weathering has to do with air; deposition has to do with plants. Weathering occurs only in summer; deposition occurs year-round. Weathering can be chemical or physical; deposition is only chemical

Answers

Answer:

A. Weathering breaks down rocks; Deposition leaves them in new places.

Explanation:

Weathering is basically the complete process of rocks breaking apart.  In contrast, deposition is when the rocks are moved and carried away from their original place and put in new locations.

Answer:

a

Explanation:

If the hydrogen ion concentration, (H+), in a solution is 5.39 x 10-8 M,

what is [OH-]?

A.1.86 x 1021 M

B. 1.86 x 10-7 M

Answers

Answer: 1.86*10^-7M

Explanation:

Answer:

B. 1.86 x 10^-7 M

Explanation:

Which term is defined as “anything that has mass and occupies space”? a -compound b - element c - substance d - matter

Answers

The answer is matter

Answer:

D) Matter

Explanation:

can you catch coronavirus from F.A.R.Ts?

Answers

Answer:

No

Explanation:

Droplets or aerosols. When an infected person coughs, sneezes, or talks, droplets or tiny particles called aerosols carry the virus into the air from their nose or mouth. Anyone who is within 6 feet of that person can breathe it into their lungs.

Airborne transmission. Research shows that the virus can live in the air for up to 3 hours. It can get into your lungs if someone who has it breathes out and you breathe that air in.

Surface transmission. Another way to catch the new coronavirus is when you touch surfaces that someone who has the virus has coughed or sneezed on. You may touch a countertop or doorknob that's contaminated and then touch your nose, mouth, or eyes. The virus can live on surfaces like plastic and stainless steel for 2 to 3 days. To stop it, clean and disinfect all counters, knobs, and other surfaces you and your family touch several times a day.

Fecal-oral. Studies also suggest that virus particles can be found in infected people's poop. But experts aren't sure whether the infection can spread through contact with an infected person's stool. If that person uses the bathroom and doesn't wash their hands, they could infect things and people that they touch.

Which element would have the lowest electronegativity? (1 point)
O an element with a small number of valence electrons and a small atomic radius
O an element with a small number of valence electrons and a large atomic radius
an element with a large number of valence electrons and a large atomic radius
Dan element with a large number of valence electrons and a small atomic radius

Answers

The element that will have the lowest electronegativity is an element with a small number of valence electrons and a large atomic radius.

Electronegativity of an element is the ability or power of that element in a molecule to attract electrons to its Valence electrons.  The following are the properties of electronegativity:

It increases across a period from left to right of the periodic table,It decreases down the periodic table groupsGroup 1 elements are the least (lowest) electronegative elements. These elements have the lowest valence electrons with a large atomic radius. Group 7 elements are the most electronegative elements.

Atomic radius of elements increase down a group because of a progressive increase in the number of shells occupied by electrons which increases the size. But it decreases across a period because electrons are accommodated within the same shell leading to greater attraction by the protons in the nucleus.

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Answer: Its B the guy above me is correct

Which of the following molecules does not have a permanent dipole?
A CF4
B CHF3
C CH2F2
D CH3F
Explain please ❤️

Answers

Answer:

I think no b

Explanation:

because in chemistry I have nothing listen

CHF3

What happens during an alpha decay?

Answers

Answer:

Alpha decay is a type of radioactive disintegration in which unstable atomic nucleus releases a helium nucleus or alpha particle and transform into a different element. The new element formed will be reduced by four and the atomic number will be reduced by two.

Example of alpha decay is: Uranium 238 transform into Thorium 234 with the emission of an alpha particle.

What process is used to refine aluminum from its ore bauxite?

A. Electrolysis
B. Electrolytic oxidation
C. Voltaic cell processing
D. Smelting

Answers

The correct option for the process used to refine aluminum from its bauxite ore is option D.

D. Smelting

The reason why smelting is the correct choice is as follows;

Bauxite is the aluminum ore from which alumina, also known as aluminum

oxide, Al₂O₃, is produced. Bauxite is extracted from the topsoil regions of

some subtropical and tropical regions, and the Bayer process is primarily

then used to produce alumina from the bauxite.

Aluminum is produced from the alumina by an aluminum smelting process

known as the Hall—Heroult electrolytic process which involves the use of a

carbon anode and direct current to produce aluminum by reducing the

aluminum oxide

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formula for finding speed using binding energy and mass​

Answers

Answer:

The formula for finding speed using binding energy and mass is E=mc2.

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help. What is the Fall of mankind? sun inc factors 2,000,000 of its accounts receivables withou recourse for a finance charge of 5%. the company retains equal to 10% of the accounts recevable for possible adjustments. sun estimates of the recourse liabilitty at 75,000. What would be recorded as gain or loss on the transfer of receivables? If p varies directly with T and p =105 when T=400.Find p when T =500 Solve.Simplify 7 to the fifth power times 4 to the 5th power explain the delay in hearing of a sound sodium bisulfite is an ionic compound that is used as a mild bleaching agent and a food preservative. It contains the bisulfate ion, an amphiprotic ion with the chemical formula HSO-. a. Write the chemical equation for the reaction of HSO- with OH-. Is the bisulfite ion functioning as an acid or a base in this reaction?b. Write the chemical equation for the reaction of HSO- with HO+. Is the bisulfite ion functioning as an acid or a base in this reaction? X2 + (y - 1) 2 = 4 ............................. Hi please answer the following questionsMercury is used in temermeter.Give reason!Name two non flowering plantsSome leaves are modified to trap insects. Give reason. the base of a rectangle is three times as long as the height. of the perimeter is 64, what is the area of the rectangle PLEASE help me with this question! No nonsense answers please. This is really urgent. 2 Which invention was crucial to the development of cell theory? What is the difference between the abbreviation i.e., and e.g. Assume the U.S. government wants to hold the value of the dollar at $1.00 U.S. equals 120 Japanese yen, but it finds that the value of yen is appreciating against the U.S. dollar. What would be an appropriate policy to reverse this trend? Which of the following statements is false? A) All of the governmental funds use the modified accrual basis of accounting. B) Debt service funds are required to report accrued interest payable. C) General fixed assets that are acquired with governmental fund resources are recorded as expenditures in the governmental funds but are displayed as capital assets in the governmental-wide financial statements. D) Permanent funds reflect resources that are legally restricted so that principal may not be expended and earnings are used to benefit the government or its citizenry. What is the value of d to the nearest tenth? Solve 2(x - 5) = 48 - 4(x + 1) A study found that the expected annual income in a certain area is $17,255. Which of the following statistical measurements most likely led to this conclusion? Mean, range, median or mode? The width of a rectangle measures (6.8d-4.2)(6.8d4.2) centimeters, and its length measures (9.2d+8.7)(9.2d+8.7) centimeters. Which expression represents the perimeter, in centimeters, of the rectangle? What are centrifugal and centripetal ? what is communication?What is telecommunications?what do you mean by model of transmission?