Explain how the investigation could indicate that chlorophyll is needed for photosynthesis. Include the role of chlorophyll in your explanation.

Answers

Answer 1
Chlorophyll is the green pigment found in the chloroplasts of leaves. It gives leaves their green colour and aids in the process of photosynthesis by trapping light needed for it.
The variegated leaf experiment is used to investigate that chlorophyll is needed for photosynthesis:
- Take a variegated leaf
- Take another leaf and don’t do anything to it (it’s going to act as a control plant)
- Place the leaves in different Petri dishes containing moist cotton wool
- Leave the Petri dishes in the sun for about 6 hours
- Carry out the iodine test for starch on both leaves by placing 2-3 drops of iodine solution on both leaves
- You’ll find that the control turns dark blue/black while the variegated leaf is stained yellow on the white parts but dark blue/black on the green parts.
The blue/black color shows that starch is present in the leaf meaning photosynthesis took place. The yellow color is just the color of iodine solution.
The white parts do not contain starch because there is no chlorophyll to trap sunlight needed in the process of photosynthesis. This shows that chlorophyll is necessary in the process of photosynthesis.

Related Questions

What is the microscopic nature of a cell ?

Why nucleus is said to be the controller of cellular activities ?

How is a cell adapted to its small size?​

Answers

Answer:

No 1 answer They require sophiscated tools. The microscopes help in the study of cells. The molecular study of the cells are performed by the help of electron microscope. So, we can say that cells are microscopic in nature.

Explanation:

No 2 answer The nucleus is the largest and most prominent of a cell's organelles (Figure 3.7). The nucleus is generally considered the control center of the cell because it stores all of the genetic instructions for manufacturing proteins.

No 3 answer Smaller single-celled organisms have a high surface area to volume ratio, which allows them to rely on oxygen and material diffusing into the cell (and wastes diffusing out) in order to survive. The higher the surface area to volume ratio they have, the more effective this process can be.

NEED AN ANSNER VERY QUICKLY
Which statement is factual?
1.Asexual reproduction produces offspring that are identical to the parent.
2.Sexual reproduction allows for diploid gametes to combine to increase genetic variation.
3.Asexual reproduction leads to the formation of haploid gametes.
4.Sexual reproduction does not require the production of gametes.

Answers

Answer:

1

Explanation:

What is a mutation?
A. A change that occurs in RNA only

B. A change that occurs in DNA only

C. A change that occurs in DNA or RNA

Answers

Answer:

C. A change that occurs in DNA or RNA

Explanation:

Mutation is a change that occurs in DNA or RNA. So, option (C) is the correct answer.

Study the image of ammonia. How many atoms of each element bond together to create this molecule?
please help..
its sciences

Answers

One nitrogen and then 3 hydrogen

From the image, we can see that:

3 atoms of Hydrogen element and 1 atom of Nitrogen element bond together to create Ammonia molecule.

Label the male reproductive system. ​

Answers

Answer:

Refer the attachment!!!

what type of neuron begins a reflex arc ?

Answers

Answer:

sensory neuron

hope it help

Explain how limited abiotic factors can impact the biotic factors in an ecosystem?

Answers

They affect an entire ecosystem, abiotic factors affect the ability of organisms to survive and reproduce, abiotic limiting factors restrict the growth of populations.

lmk if this helped!

A group of fibers inside the cell that helps support the cell is the _____.


filament

flagella

microtubule

cytoskeleton

Answers

cytoskeleton, filaments and tubules makeup the cytoskeleton
The cells that help support fibers inside the cell are the Cytoskeleton.

WILL IVE BRAIN?? Why might humans not have widespread regeneration abilities?

Answers

Answer: because mammals have more complex biological structures; limb regeneration would require sophisticated controls to ensure that limbs and organs don’t grow out of control.

Explanation:

homeostasis in the human body is usually maintained by?

Answers

Answer:

Homeostasis is controlled by the nervous and endocrine systems in mammals.

Explanation:

Homeostasis is maintained by negative feedback loops within the organism. In contrast, positive feedback loops push the organism further out of homeostasis, but may be necessary for life to occur. Homeostasis is controlled by the nervous and endocrine systems in mammals.

Which of the following is NOT a characteristic of life?
A.Made of one or more cells
B.Movement
C.Requires Energy
D.Adapts over time

Answers

i think it’s A it’s sounds the most accurate but i’m not sure .

Answer:

The answer should be C

Explanation:

Life is made of cells, life moves and also adapt over time...but I don't think it requires energy

1. In what four forms of matter is water found on Earth?
Explain your answer (give examples).

Answers

Solid : ice
Liquid : water
Gaz : vapor

Qué le debe pasar al Nitrógeno (N) para poder ser utilizado por los organismos?

Answers

Answer:

Tiene que ser convertido o 'arreglado' a una forma más utilizable a través de un proceso llamado fijación.

1. Lactose takes years to break down on its own. But if exposed to the protein lactase, the reaction proceeds very quickly, while lactase itself remains unchanged. Lactase is an example of a(n) . 2. A(n) is a molecule that can bind to an enzyme and prevent the enzyme from working. There are two types: a(n) binds to the active site of the enzyme; a(n) binds elsewhere on the enzyme. 3. Enzymes speed up chemical reactions by lowering the , which allows the reaction to proceed much more quickly. 4. During an enzymatic reaction, a molecule of binds to the enzyme and is broken down into one or more molecules of , which are released. 5. The specific location within an enzyme molecule where the substrate binds is called the .

Answers

Answer:

1.) Lactase is an example of ENZYME.

2.)An INHIBITOR is a molecule that can bind to an enzyme and prevent the enzyme from working.

3.)Enzymes speed up chemical reactions by lowering the ACTIVATION ENERGY,

4.) a molecule of SUBSTRATE binds to the enzyme and is broken down into one or more molecules of PRODUCT which are released.

5.) The specific location within an enzyme molecule where the substrate binds is called the ACTIVE SITE.

Explanation:

An enzyme is defined as the substances that aids in the breaking down of complex food substances, taken in by animals, into simple, soluble and diffusible substances before they can be absorbed into the body. In the enzymatic reactions, a molecule of SUBSTRATE binds to the ACTIVE SITE of an enzyme and is broken down into one or more molecules of PRODUCT which are released.

There are different types of enzymes which are named according to the type of good they digest, these include:

--> Lactase: breaks down Lactose

--> proteases: breaks down proteins

--> Amylases: breaks down carbohydrate

Enzymes have the following characteristics:

--> They are proteins

--> They are specific in action. For example Lactase can only act on lactose.

--> They can be inactivated by INHIBITORS.

--> They are sensitive to temperature

--> They speed up a reaction by lowering the ACTIVATION ENERGY

A cornfield include corn plants my socks and various insects fungi and bacteria which nutritional role is correctly paired with organisms that carry out that role

Answers

Answer:

oh i dont know

Explanation:

Why are third parties important in a political system?

Answers

Answer:

Third parties are important in a political system because they serve an important role in our political system by forcing major political parties to address new issues they might not have previously addressed very much. And third party candidates can also greatly impact an election by taking away votes from one of the major political party candidates.


At which latitude were these apparent Sun paths most likely observed?

Answers

36 degrees north (the answer)

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Answers

The answer should be,B. It has arms that wind around it’s core.

Explanation:

a spiral galaxy is,
a galaxy in which the stars and gas clouds are concentrated mainly in one or more spiral arms.

how meiosis turn one cell into four new sex cells?

Answers

Answer:

A single round of DNA replication occurs in the parent cell, followed by two distinct nuclear division cycles. The process produces four haploid daughter cells, each with half as many chromosomes as the diploid parent cell.

Explanation:

During sexual reproduction, meiosis produces the sex cells that combine to make new children.

Meiosis is a type of cell division that results in the formation of sex cells (egg and sperm). And that is brought together to generate new progeny through the act of sexual reproduction.

Meiosis generally results in 4 haploid daughter cells, meaning half no chromosomes are contained in diploid cells.

What will most likely result if a diabetic injects an overdose of insulin?
A. a serious infection in the pancreas
B. an increase in the production of pancreatic enzymes
C. an accumulation of wastes in the bloodstream
D. a dangerous drop in blood sugar levels

Answers

Answer:

d a dangerous drop in blood sugar which can lead to a coma

Answer:

D) a dangerous drop in blood sugar levels will most likely result if a diabetic injects an overdose of insulin?

hope this helps!!!

Can someone pls tell me if it’s A or D

Answers

Answer:

D................................

Answer:

D

Explanation:

An invasive species the spiny water fea, was recently found in a New York lake These water feas eat zooplankton a food also consumed by native fishes. The
Das spread trom lake to take by attaching to fishing lines anchor ropes, and boats which statement best describes the effect of the water tea on the lake?
It will not compete with animals in the local food chain
It will feed on organisms that are important to other species
The number of water teas will decrease due to a lack of food
There will be no effect on native species in the lake

Answers

Answer:

It will feed on organisms that are important to other species

Explanation:

Its an invasive species that is stealing food.

The body of a tiger is made of many types of cells, such as muscle cells and nerve cells. All of the tiger's cells are eukaryotic. What else is true about the tiger's cells?

a) They are similar to bacterial cells.

b) Their organelles do not have a membrane.
c) Their is located in the nucleus.

d) They all have a looped strand of DNA ​

Answers

Answer:

I would pick ...d

Explanation:

Every cell in the body has a loop of spiral staircase of cells that help pass genetic information to new cells.

Gut bacteria provide all of the following benefits Except

Answers

Answer:

Despite the acidic of the stomach, diverse phylotypes of resident microbes thrive in the stomach.

Explanation:

which is not true about fungi
1 rgey lacks chlorophyll
2 they have myceliumption 2
3 they lacks cell wall
4 they stores food as glycogen​

Answers

4 they stores food as glycogen

Which factor can cause secondary succession?

clear cutting

glacial melting

competition

predation

Answers

Answer:

first one

Explanation:

clear cutting

Answer:

A

Explanation:

EDGE

Breeding a dog that is small and well suited for hunting small game is the result of…
A- evolution
B-natural selection
C-artificial selection
D-adaptation

Answers

Answer:

d

Explanation:

adaptation allows the dog to evolve for small game

Question 5 of 30
What information can a scientist learn directly from a single fossil?
A. The organism's shape and size
B. How the organism is related to others
C. The life expectancy of similar organisms
D. How many offspring the organism produced
SUBMNT

Answers

Answer:

C. The life expectancy of similar organisms

The ___ of water molecules and the hydrogen bonds between water molecules explain most of water's life-supporting properties.
The ___ of water molecules to each other helps transport water from the roots to the leaves on plants.
When water warms or cools, ____ either break or form.
Thus, water absorbs or releases a great deal of ____, helping to moderate temperatures.
Water is a versatile ____.
Blood and other biological fluids are aqueous solutions with a diversity of dissolved ______.

Answers

Answer:

The polarity of water molecules and the hydrogen bonds between water molecules explain most of water's life-supporting properties.

The cohesion of water molecules to each other helps transport water from the roots to the leaves on plants.

When water warms or cools, hydrogen bonds either break or form.

Thus, water absorbs or releases a great deal of heat, helping to moderate temperatures.

Water is a versatile solvent.

Blood and other biological fluids are aqueous solutions with a diversity of dissolved solutes.

Explanation:

The sentences presented in the question above had their various spaces complemented by the words that best fit the sentence and that were capable of forming true invormations on water.

Water is a very versatile solvent as it is capable of dissolving and mixing with various substances both liquid and solid. Furthermore, water has a great capacity to absorb or release heat, which is very useful for the entire planet, as this allows water to be very efficient in regulating temperature.

Water is formed by H2O molecules, which hold these molecules together are the hydrogen bridges formed between them. Hydrogen bridges are broken through heat, which allows the water to evaporate, but at low temperatures these bridges are strengthened and new bridges can be created, which allows the water to become solid.

The properties of water are extremely important for life on the planet and for most biological processes we know about. Among these properties we can mention polarity and cohesion as one of the most important. Polarity allows water to be a polar substance, while cohesion allows water to create an attractive relationship between molecules.

What are 3 environmental factors in the natural reserve that affect which mice in a population survive to produce. And do these factors affect the genotype or the phenotype of the mice populations or both?

Answers

i don’t know but please help me with my spanish!!
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