DRY MASS OF CORN SEEDLINGS GROWN UNDER DIFFERENT CONDITIONS
Initial Dry Mass of Dry Mass of10 Change in dry
Treatment Group Treatment 10 Plants (g) Plants After Mass of10 Plants
One Week () over One Week
I None 14.8
II Light 32.8 +18
III Dark 11.7 -3.1
Thirty corn seedlings of equal size were randomly assigned to one of three treatment groups. At the beginning of the experiment, the plants in group I were dried and the mass was determined. The plants in group II were maintained in light for a week. The plants in group III were maintained in the dark for a week. All conditions other than light, were the same for groups II and III. At the end of the week, the plants in groups II and III were dried and the mass was determined. The experimental results are provided in the table.
(a) To explain the increase in mass of the light-grown plants, identify ONE inorganic source of new plant mass and connect it to the cellular process underlying the increase in mass.
(b) To explain the decrease in mass of the dark-grown plants, identify the overall chemical reaction that is occurring in the plant cells and connect it to the cellular process underlying the decrease in mass.

Answers

Answer 1

Answer:

See the answer below

Explanation:

(a) One of the inorganic sources of new plant mass for the light-grown plants is the atmosphere. The carbon in the form of carbon dioxide in the atmosphere is sequestrated into the body of the light-grown plants through a process known as photosynthesis. During this process, the inorganic carbon dioxide becomes fixed into the body of the plant through a series of steps that include both light-dependent and light-independent. The overall equation of the process is as below:

[tex]6CO_2 + 6H_2O + Light --> C_6H_1_2O_6 + 6O_2[/tex]

As more plant mass is being gained by photosynthesis, some of the gained mass is also being lost to energy generation through a process known as respiration. Respiration is like the complete opposite of photosynthesis but a gain in mass is still possible because the rate of photosynthesis is more than the rate of respiration in the light-grown plants.

(b) The chemical reaction that can be held responsible for the decrease in mass of the dark-grown plants is respiration. Some of the mass is lost to energy generation and this mass cannot be recouped by adequate photosynthesis due to light limitation. The energy is needed to metabolic processes that would keep the plants alive. The equation of respiration is as below:

[tex]C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_2O + Energy[/tex]

Answer 2

Answer:

A) Inorganic source of cellular mass is CO2. Plants take up CO2 from the atmosphere. By the process of photosynthesis, plants prepare sugars . Sugar gets converted in to starch, cellulose and other carbohydrates which are stored in the cells of the plants. This increases the plant mass . Plant requires water,CO2, light chlorophyll.

Chlorophyll absorbs sun light and converts it in to chemical energy. Chemical energy is used by the plant to synthesize sugars. Because of the synthesis of the sugars ,starch etc , the mass of the plant increased. Plants need light for making sugars.

B. Decrease in the mass is due to cellular respiration. This group of plants are in dark. So they do not photosynthesis.

But they have to undergo respiration to get energy for the activities of the plant. So no photosynthesis is occurring, hence no sugar formation. But sugar present in the plant is consumed to release energy. That is why mass of the plants kept in dark is reducing.

Cellular respiration has 3 steps. 1. Glycolysis 2. Kreb's cycle. 3. Electron Transport Chain.

The cellar respiration provides energy to all living organisms.

[tex]C6H12O6 + 6 O2 ---------> 6CO2 + 6H2O + energy (ATP)[/tex]

CO2 released is given out of the plant body. So this is reducing the plant mass.

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Related Questions

If someone can help me i will Give brainliest to the first person who give an answer this i promise u

Answers

Microscopes use lenses to magnify objects. A simple microscope uses only one lens; a magnifying glass could be called a simple microscope. The magnification of a simple microscope doesn't need any calculation because the single lens is usually labeled. A hand-lens, for example, might be labeled with 10x, meaning the lens magnifies the object to look ten times larger than the actual size.

The picture shows a model of a cell. What is the main function of the cell part labelled Y in the model

Answers

I believe the answer is Choice A

What are three types of devices for measuring precipitation?

Answers

Answer:

rain gauge, snow gauge...

In the wild, the plant Knoxiensus prairieii displays a dimorphic trait for fruit color. The plants will bear either purple or yellow fruits. You find and collect several wild plants from around campus and decide to perform some experiments to determine the relationship between the purple and yellow gene traits. You either perform self-crosses (selfing) or you carefully perform cross-pollination experiments between two plants and obtain the following results:

Pollination Purple Progeny Yellow Progeny
Purple (self) 87 0
Purple (self) 76 24
Yellow (self) 0 95
Purple x Yellow 98 0
Purple x Yellow 52 56
Purple x Yellow 85 0
Purple x Purple 91 0

Required:
From these results, explain the mode of inheritance for the fruit color phenotype.

Answers

Answer:

The mode of inheritance for the fruit color phenotype is autosomal dominant. Purple color dominates over yellow color.

Explanation:

You will find the complete explanation in the attached files due to technical problems.

When blood is drawn from your arm, what type of vessel does the phlebotomist use? Why?

Answers

Answer:

1. Median cubital vein A superficial vein, most commonly used for venipuncture, it lies over the cubital fossa and serves as an anastomosis between the cephalic and basilic veins. 2. Cephalic vein Shown in both forearm and arm, it can be followed proximally where it empties into the axillary vein.

Explanation:

Please help me. <><><><><<>

Answers

Answer:

I would say D

Explanation:

Brown-eye color is dominant and blue-eye color is recessive. A brown-eyed man marries a blue-eyed woman and they have a son that has Green eyes. SC.912.1.16.1
What Pattern of inheritance is that?
sex-linked
Co-dominant
Incomplete dominance
O polygenic recessive

Answers

Answer: Polygenic recessive

Explanation: Because polygenic dominance describes a relationship between the alleles of a polygenic trait where some alleles are dominant and others are recessive.

This is the pattern of inheritance of Polygenic recessive. So, the correct option is (D).

What is Polygenic inheritance?

Polygenic inheritance can be described as the inheritance of traits that are governed by different genes and not just a single gene, and can also be referred to as non-Mendelian inheritance, where traits run like a bell. distributes the sizes and shows the different combinations such as dominant and recessive alleles.

Polygenic traits express several different phenotypes, or displayed characteristics where this inheritance is a type of incomplete dominance inheritance, where the expressed phenotype is a mixture of inherited traits.

Thus, this is the pattern of inheritance of Polygenic recessive. So, the correct option is (D).

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Bear in mind the biological definition of a species and also the appearance and distribution of the named populations of Ensatina. Which populations could be considered a species separate from E.e. eschscholtzii?

Answers

Answer:

E.e. oregonesis

E.e. platensis

E.e. xanthoptica

E.e. croceater

E.e. eschscholtzii

E.e. klaubori

Explanation:

The species mentioned above are probably separate species from E.e. eschscholtzii. this separation occurred due to geographic isolation, where each group of E.e. eschscholtzii evolved creating new species. This type of speciation is called "ring species" and refers to an evolution that is capable of providing species with extremes of variation that are not intercrossed, due to geographic isolation.

A brown fur female rabbit (BB) and a white fur male rabbit (WW) produce offspring. Both
fur colors are dominant. What term best describes what will occur with the fur color of all
of their future offspring?
O Incomplete Dominance
O Passive Dominance
O Codominance
O Strong Recessiveness

Answers

I think it’s passive dominance!

How do you think the systems on Earth work together to create what we see on Earth?

Answers

Answer:

Explanation:

Like this

What are 2 characteristics of Eukaryotes?

Answers

Answer:

prokaryotic cells, eukaryotic cells have: a membrane-bound nucleus. numerous membrane-bound organelles (including the endoplasmic reticulum, Golgi apparatus, chloroplasts, and mitochondria) several rod-shaped chromosomes

Explanation:

Answer:

They have a nucleus, They have road shaped chromosomes

Explanation:

What are the signs and symptoms of sickle cell anemia?

Answers

symptoms

Explanation:

swelling

frequent infections

delayed growth or puberty

vision problems

sickle cells break apart easily and die leaving you with to few red blood cells

Symptoms
Anemia. Sickle cells break apart easily and die, leaving you with too few red blood cells. ...
Episodes of pain. Periodic episodes of pain, called pain crises, are a major symptom of sickle cell anemia. ...
Swelling of hands and feet. ...
Frequent infections. ...
Delayed growth or puberty. ...
Vision problems.

Having pierced ears is an example of a trait.

Answers

Answer:

physical trait because you can observe it directly

Explanation:

Decision as to the cause or nature of a disease given by the M.D.
_____________.
it gives no choices but this is medical terminology
please help

Answers

I think it’s etiology...

Copper sulfide is found written as both CuS and Cu2S. Why are there two forms for writing this chemical formula?

SELECT AN ANSWER

This is an example of a combination reaction: CuS is the halfway stage, before the second copped atom joins the molecule.


Copper is a transition metal with two possible ionic states (copper I, or 1+, and copper II, or 2+).


This is a synthesis reaction and so the formula will continue changing until all the atoms have conglomerated.


One of the versions is a mistake, the correct form should be Cu2S.

Answers

Answer:

option 3

Explanation:

Copper is a transition metal with two possible ionic states (copper I, or 1+, and copper II, or 2+).

There are two forms for writing the chemical formula because copper is a transition metal with two possible ionic states (copper I, or 1+, and copper II, or 2+)

Copper is a transition metal with variable oxidation states. The oxidation states of copper is what determines the name of CuS and Cu₂S.

Now, we shall determine the oxidation states of copper in each compound.

For CuS:

CuS = 0

S = –2

Cu =?

Cu + S = 0

Cu + (–2) = 0

Cu – 2 = 0

Collect like terms

Cu = 0 + 2

Cu = +2

For Cu₂S:

Cu₂S = 0

S = –2

Cu =?

2Cu + S = 0

2Cu + (–2) = 0

2Cu – 2 = 0

Collect like terms

2Cu = 0 + 2

Divide both side by 2

Cu = 2/2

Cu = +1

From the calculations made above, we can see that copper has oxidation state of +2 in CuS and +1 in Cu₂S

Thus, we can conclude that Copper is a transition metal with two possible ionic states and this accounts for the different names of CuS and Cu₂S

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Which statement is true regarding the transmission of sex-linked traits in a population?
O Males cannot carry recessive alleles for sex-linked traits.
O Males cannot express dominant alleles on the X chromosome.
O Males cannot express recessive alleles on the X chromosome.
O Males cannot pass alleles for sex-linked traits to their daughters.

Answers

Answer: none of the statements are true

Explanation: Males can have a recessive copy of a X-linked gene, and can pass that on in the X containing gamete and so pass it on to daughters,  but not to male offspring. Males will express whichever allele, dominant or recessive that they carry.

What are condensation nuclei?

Answers

Answer:

Cloud condensation nuclei or CCNs are small particles typically 0.2 µm, or 1/100 the size of a cloud droplet on which water vapor condenses. Water requires a non-gaseous surface to make the transition from a vapour to a liquid; this process is called condensation.

MAYBE I THINK ;)

Also called cloud condensation nuclei. Tiny particles upon whose surfaces condensation of water vapor begins in the atmosphere. Small nuclei less than 0.2 mm in radius are called Aitken nuclei; those with radii between 0.2 and 1 mm are large nuclei, while giant nuclei have radii larger than 1 mm.

What would happen if a cell couldn't make catalase?

Answers

Answer:

If hydrogen peroxide is not broken down by catalase, additional reactions convert it into compounds called reactive oxygen species that can damage DNA, proteins, and cell membranes. ... A shortage of this enzyme can allow hydrogen peroxide to build up to toxic levels in certain cells

If hydrogen peroxide is not broken down by catalase, it can be converted into reactive oxygen species, which can damage DNA, proteins, and cell membranes.

What is catalase?Catalase is an important enzyme that uses hydrogen peroxide, a non-radical ROS, as a substrate.This enzyme breaks down and neutralizes hydrogen peroxide to maintain optimal molecular levels within cells.It is also essential for cell signaling processes. The catalase enzyme breaks down hydrogen peroxide (H2O2) into water and molecular oxygen, protecting cells from oxidative damage by reactive oxygen species.Commercially available catalase is produced from Aspergillus niger by a solid-state fermentation process.Peroxidase or catalase is an enzyme of the oxidoreductase class. The peroxidase enzyme catalyzes the breakdown of hydrogen peroxide into water and molecular oxygen as shown.Catalase is a tetrameric heme protein that detoxifies H2O2 into oxygen and water.It is a metalloprotein oxidoreductase and when present in high concentrations he efficiently removes H2O2.

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Limestone form as ocean water evaporates and leaves calcium carbonate behind, which is the deposited in the seabed. What type of rock can be formed this way?

Answers

Answer:

Sedimentary rock.

Explanation:

Limestone form as ocean water evaporates and leaves calcium carbonate behind, which is then deposited in the seabed. Thus, the type of rock that can be formed this way is a sedimentary rock.

The texture of inorganic land-derived sedimentary rocks is fragmental or clastic. Sediments come from land to form inorganic sedimentary rocks.

Some examples of inorganic land-derived sedimentary rocks are conglomerate, brescia and sandstone.

which pair best matches a type of land covered with inappropriate land use?

Answers

Answer:

C, RANGLELAND

Explanation:

Rangeland can be described as a land which consists of grasses, shrubs, woods, wetlands etc which are ideal for the grazing of domestic and wetland animals. Hence, a rangeland is used for grazing livestock. Hence, option C is correct.

Other options, like option D, is not correct because an urban land supports city life. It is not ideal for the growing of crops as it contains pollution of the city.

Answer:

c

Explanation:

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10. What is the difference between predation and parasitism? *

Answers

Answer:

Predation involves an indivudal creature hunting, killing, and then consuming an animal. An example of this would be a fox hunting a rabbit and then eating it. A parasite is something that can live on or inside another organism, feeding off of it without outright killing it (at least not right away). An example of a parastie would be a tapeworm.

Answer:

C) Predators typically kill their victim, while parasites mostly want to keep the victim alive for continued resources.

Explanation:

-3-

Please help u have to do this today

Answers

Answer:

A

Explanation:

Both are igneous because lava/ magma form igneous rocks.

competitive exclusion controls population size. True or false

Answers

Answer:

True

Explanation:

Studies have shown that intraspecific competition can change poopulation size over time. The experiments suggested that competing species cannot live together, because the best competor will exclude the other competing species.

Hope that helped.

Answer:

True

Explanation:

whick factor is a density dependent limting factors on poplation of a species

Answers

Answer:

I need to see an image of something to help u out

I look in the mirror but i'm not there and instead i see a strange disoriented ghost like figure. Whats wrong with me. Is this a sign of death. Please help me.

Answers

Answer:

Science shows that if you stare at your face long enough your brain will get bored and make your face look distorted and ghost like

Explanation:

Answer:

try not to stare into the mirror so long or get some fresh air outside

A group of squirrels living in the same area and competing for similar resources is called a

Answers

ANSWER: interspecific competition

Which organism would have the most biomass
Ants
Bager
Wolf

Answers

Answer:

ANTS

Explanation:

Is this right? Hope it is

Among cattle, coat color is controlled by 2 codominant alleles, RR (producing a red coat) and WW (producing a white coat). The 2 alleles together, RW, produce a “roan” coat. The presence or absence of horns is controlled by the alleles H (hornless) and h (horned), with H completely dominant over h. show what the genotypes and phenotypes would be in both the F1 and F2 generations of a cross between RRHH x WWhh parents.
I will mark branliest to the first good answer

Answers

Not sure if this is the format you want it in but

F1:
Genotype: RWHh, RWHh, RWHh, RWHh
Phenotype: basically all of them would have the roan coat and they would be hornless

F2:
Genotype: WWHH, RWHh, RRHh, RWhh
Phenotype: one will have a white coat and hornless, roan coat and hornless, red coat and hornless, roan coat and horned

Hope this somewhat helped

Please someone help me please

Answers

It is false.

Explanation:

Colloids include gels, sols, and emulsions; the particles do not settle, and cannot be separated out by ordinary filtering or centrifuging like those in a suspension.

Which optical phenomena are formed by cloud droplets?

Answers

Answer:

Cloud iridescence

Sunlight travels through the cloud and is diffracted by the droplets, creating the rainbow effect. It can appear as a patch or band at the cloud's edges and changes as the cloud evolves.

Explanation:

Answer:

Cloud iridescence

Sunlight travels through the cloud and is diffracted — or spread out — by the droplets, creating the rainbow effect. It can appear as a patch or band at the cloud's edges and changes as the cloud evolves. Iridescence is mostly seen when part of a cloud is forming and when it is closer to the sun.May 11, 2018

Explanation:

Good luck

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