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2 years ago

How are cellular respiration and photosynthesis almost opposite processes?

Biology

2 answers:

tino4ka555 [31]2 years ago

8 0

Answer:

The product of one process is the reactant of the other and vice versa.

Explanation:

Photosynthesis is a process whereby autotrophs e.g. plants make their own food in form of organic molecule (glucose) by combining the carbondioxide (CO2) they absorb via their stomata and water (H2O) using the energy they obtain from sunlight.

Photosynthesis uses C02 and H2O as starting materials and produce glucose and 02 as products.

6CO2 + 6H2O ------> C6H12O6 + 6O2

On the other hand, organisms including this photosynthetic organisms need energy for their life processes. They obtain this energy by breaking down energy-containing organic molecules (glucose) to produce energy usable by their cells (ATP). This process is called CELLULAR RESPIRATION. Cellular respiration can occur in the presence of oxygen (aerobic) or absence of oxygen (anaerobic). The aerobic cellular respiration is depicted as follows:

C6H12O6 + 602 -----> 6CO2 + 6H2O

Aerobic cellular respiration uses glucose and oxygen as a starting material and produces C02 and water as products.

Due to this connection between photosynthesis and respiration, they are regarded as direct opposite of each other.

vesna_86 [32]2 years ago

7 0

Cellular Respiration and Photosynthesis are almost opposite processes because photosynthesis removes carbon dioxide from the atmosphere while cellular respiration puts back carbon dioxide. Cellular respiration uses oxygen and has its waste product of carbon dioxide (CO2).

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The following F2 results occur from a dihybrid cross (AaBb x AaBb): purple: A_B_ 9/16 white: aaB_ 3/16 white: A_bb 3/16 white: a

e-lub [12.9K]

Answer:

b. 3 (whilte) : 1(purple)

Explanation:

The first dihybrid crossing is between AaBb x AaBb

Now, if the double heterozygous traits self crossed, we have the following gametes shown below for the F₂ crossing.

AaBb = (AB, Ab, aB, ab)

AB Ab aB ab

AB AABB AABb AaBB AaBb

Ab AABb AAbb AaBb Aabb

aB AaBB AaBb aaBB aaBb

ab AaBb Aabb aaBb aabb

We were being told that the results are;

purple: A_B_ 9/16

white: aaB_ 3/16

white: A_bb 3/16

white: aabb 1/16

From above, we can see that the same is true;

For Purple color; we Have (AABB and AaBb) since A is dominant to a and B is dominant to b.

∴ From the above punnet square; we have 9 purple colors which are:

(AABB, AABb, AaBB, AaBb, AABb, AaBb, AaBB, AaBb, AaBb) = 9/16

white: aaB_ ( since B is dominant to b, it can be either BB or Bb)

= (aaBB, aaBb, aaBb) = 3/16

white: A_bb ( since A is dominant to a, it can be either AA or Aa)

= (AAbb, Aabb, Aabb) = 3/16

white: aabb i.e homozygous recessive = (aabb) = 1/16

Furthermore, the question goes further by saying:

If a double heterozygote (AaBb) is crossed with a fully recessive organism (aabb), what phenotypic ratio is expected in the offspring?

If AaBb self crossed, we have: (AB, Ab, aB, ab)

If aabb self crossed, we have: (ab, ab, ab, ab)

AB Ab aB ab

ab AaBb Aabb aaBb aabb

AaBb ( purple)

= 4/16

= 1/4

= 0.25

= 25%

Aabb (white)

= 4/16

= 1/4

= 0.25

= 25%

aaBb (white)

= 4/16

= 1/4

= 0.25

= 25%

aabb (white)

= 4/16

= 1/4

= 0.25

= 25%

Now the proportion of white to purple = (25%+25%+25%): 25%

= 75%:25%

= 3(white):1(purple)

We can therefore conclude that the expected phenotypic ratio in the cross between a double heterozygote (AaBb) with a fully recessive organism (aabb) yeids;

3 (whilte) : 1(purple)

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3 years ago

If 2n=8 how many chromosomes do the organism's gametes contain

fenix001 [56]

4 i guess........................

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3 years ago

A scientist observes changes in a population of slow-moving animals over time. She hypothesizes that the population may be decre

Sergeeva-Olga [200]

<h2>Scientist Observing changes </h2>

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3 years ago

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The sporophyte of an unknown plant species grows as a separate plant than the gametophyte. The plant produces both female and fl

N76 [4]

Answer:

The correct answer would be "The plant is a fern, and sporophyte is its dominant phase".

Ferns refer to the lower plants which do not bear flowers, have leafy or feathery fronds, and they reproduce by spores.

They show alternation of generation in which sporophyte is the dominant stage.

The mature diploid sporophyte releases haploid spores with the help of meiotic divisions.

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The gametes fertilize to produce a diploid zygote.

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3 years ago

Why do cats purr?///////////////

jenyasd209 [6]

Answer:

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Explanation:

6 0

3 years ago

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