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alina1380 [7]
3 years ago
15

How would you test the presence of starch in leaves?

Biology
1 answer:
Lesechka [4]3 years ago
4 0

Answer:

1. Remove a green leaf from the plant

2. Boil the leaf in boiling <u>water stop enzymatic reaction within cells in leaf</u>

3. Put the boiled leaf in boiling tube containing alcohol <u>extract (ethanol) chlorophyll ethanol dissolves Lipids in cell membranes.</u>

4. Return to leave to the hot water <u>soften the leaf and allows penetration of </u><u> </u><u>i</u><u>odine</u>

5. Remove leaf and perform the iodine test

Explanation:

<em>starch is white powdery substance consisting of glucose which is used by plants as food the percents of starch in leaves evidence enough of the process a photosynthesis being carried out in leaves as the formation of starch necessitates photosynthesis</em>.

I hope this helps :)

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Tick (✔️) the correct statements for the condition(s) that occur in the small intestine.
galina1969 [7]

Answer:

1.The absorption of amino acid occurs. ✔️ or ❌?

<h2> ans = The absorption of amino acid occurs. ✔️ (correct) </h2>

2. Carbohydrate change to maltose with the presence of amylase enzyme. ✔️ or ❌?

<h2>ans= 2. Carbohydrate change to maltose with the presence of amylase enzyme. ✔️(correct) </h2>

3.Fatty acid and glycerol being absorbed. ✔️ or ❌?

<h2>ans=no about only 95 percent in small intestine </h2>

<h2>hope you understand please give brainliest plz follow </h2>
4 0
2 years ago
This is worth 100 points. Please answer and do not skip over this question.
ololo11 [35]

Answer:

I would predict that the the following generation will have a large amount of pups that are eaten by the sharks.

This question seems like its asking about natural selection.

"Natural selection is the process when organisms better adapted to their environment tend to survive and produce more offspring"

Explanation:

If the marine biologist did not give the pups medicine in the first generation, the pups that were less fit or not adaptive to the enviroment to naturally survive the infections would have died. This would have prevented these pups from passing on their genes.

The next generation would consists of pups that are more immune to the sickness or more fit for their enviroment and might experiece less pups to die.

3 0
3 years ago
In tropical climates, where strong insolation makes temperatures high, all that is needed for intense daily convectional storms
mina [271]
<span>The tropical climate is found northward and southward from the equator to about 15 to 25° of latitude. </span><span>
In tropical climates, where strong insolation makes temperatures high, all that is needed for intense daily convectional storms is </span>a source of humidity. A<span>ll months have average temperatures greater than 18° Celsius.</span>

8 0
3 years ago
Which of these statements best describes a similarity between photosynthesis and dissolving in the sea?
Mama L [17]

The correct answer is D. Both absorb carbon dioxide from the atmosphere.

The process of photosynthesis is carried out using atmospheric carbon dioxide by green plants. Many gases including carbon dioxide are dissolved in seawater. Some of the carbon dioxide gas remains in dissolved state but most of the carbon dioxide is reacts with water to form carbonic acid. Dissolved gases in seawater make balance with atmosphere by mixing of the surface by wind and waves. Therefore, both photosynthesis and sea water take carbon dioxide from the atmosphere.  

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3 years ago
What is the essence of the catalase test?
garik1379 [7]

Explanation:

Catalase test demonstrate the presence of an enzyme called catalase, that catalyses the release of oxygen from hydrogen peroxide. It is used to tell the difference between the non-catalase producing bacteria from those bacteria that produces an enzyme catalase. Catalase is produced by the bacteria that respire using oxygen. If an organism produces catalase, bubbles of oxygen are produced when hydrogen peroxide is added to it.

8 0
2 years ago
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