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alina1380 [7]
4 years ago
15

How would you test the presence of starch in leaves?

Biology
1 answer:
Lesechka [4]4 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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If antibodies to fibronectin are exposed to an embryo through which neural crest cells are migrating
lidiya [134]

Answer:

Neural crest cell movements are inhibited.

Explanation:

Neural crest cells may be defined as the temporary group of cells that are unique for the chordata group. These cells arise from the embryonic ectoderm and give rise to future melanocytes.

Antibodies to fibronectin association is helpful to study the signalling factors. If these anitodies to fibronectin is shown in the embryonical stage. The neural crest migration is inhibited by its exposure to fibronectin and this might hinder the embryonic development.

Thus, the answer is neural crest cell movements are inhibited.

3 0
4 years ago
A useful device for predicting the possible offspring of crosses between different genotypes is the _____.
kogti [31]
A Punnet Square is what you're looking for :)
4 0
4 years ago
Help me with these 2 questions!!
Rashid [163]

Answer:

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6 0
3 years ago
Which group of microorganisms is composed only of hereditary material wrapped in a protein
dezoksy [38]
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7 0
4 years ago
Approximately 55%of an adult female body weight is water if a woman body contains 38 kg of water what is the woman's total weigh
bezimeni [28]

Answer: 69kg

Explanation:

Let the total weight of the woman be represented by x. Based on the information given, we can derive an equation which will be:

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Divide through by 0.55

x = 38kg/0.55

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Therefore, the woman's total weight is 69kg.

4 0
3 years ago
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