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3 years ago

Describe the experiment, to show that light intensity, water, chlorophyll, and cabondioxide are needed for photosynthesis

Biology

1 answer:

lisov135 [29]3 years ago

3 0

Answer:

Is light needed for photosynthesis?

1. Destarch the plant (remove previously made starch from plant)

2. a. cut the leaf in 2

b. 1 part in an opaque box and 1 part in a transparent box (one with light and one without)

3. Test for starch (BEWI)

B. Is carbon dioxide needed for photosynthesis?

1. Destarch the plant (remove previously made starch from plant)

2. a. cut the leaf in 2

b. 1 part in a box with CO2 absorber and 1 part in box with a CO2 provider

3. Test for starch (BEWI)

C. Is chlorophyll needed for photosynthesis?

1. Destarch the plant (remove previously made starch from plant)

2. Use a variegated leaf

3. Test for starch (BEWI)

B E W I

1. Put leaf in boiling water to destroy the cell membrane and denature enzymes

2. Ethanol in a hot water bath to remove chlorophyll

3. Warm water to soften the leaf

4. Add drops of iodine solution

Explanation:

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zloy xaker [14]

Answer:

During DNA replication, the leading strand is synthesized in the 5' to 3' direction. The strand that runs away from the replication fork is synthesized in Fragments because DNA polymerase cannot synthesize in the 3’ to 5’ direction.

Explanation:

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The leading strand grows in the same direction in which the replication fork grows.
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3 years ago

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Mariana [72]

Answer:

The answer is A.) Active Transport! :)

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3 years ago

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After electrons leave photosystem ii, they go into an electron transport chain of three protein complexes. where do they go afte

Ira Lisetskai [31]

The right answer is photosystem I

And the three protein complexes are : plastoquinone, cytochrome b6f complex, plastocyanin.

In plants, photophosphorylation occurs in the membrane of thylakoids, within chloroplasts:

H2O ==> photosystem II (which contains P680) ==> plastoquinone ==> cytochrome b6f complex ==> plastocyanin → photosystem I (which contains P700) ==> ferredoxin ==> ferredoxin-NADP + reductase ==> NADP +

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3 years ago

Help please and thank you

Anna [14]

Answer:

i think its D

Explanation:

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3 years ago

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10. Researchers observe a large population of birds on a remote island. Birds in the population are found to have either red cre

IgorLugansk [536]

Suppose that the proportion of the white crest alleles (r) is given by w and that of the Red crest allele (R) is given by p. We have that p+w=1. The probability that an individual has 2 r alleles is given by w*w since for each allele position the probability is w. Only these individuals have a White phenotype. Hence, we get that w^2= $\frac{1759}{1759+11088}$ ; the right hand side is the proportion of white birds in the total population. Doing the calculations, this yields that w=0.37. From this, we calculate that p=0.63. The possible ways we have heterozygous individuals are the combinations Rr and rR. The probability for each of those is p*w. Thus, the total probability is 2pw. This is equal to 0.466=0.47. This is the fraction of the future population that is going to be heterozygous assuming the conditions of the Handy-Weinberg equilibrium like random reproductive matching etc.

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4 years ago