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zepelin [54]
3 years ago
15

Why are most finches, which normally eat seeds, unable to eat flower nectar, like hummingbirds?

Biology
1 answer:
NeTakaya3 years ago
5 0
Most finches' beaks are way too broad or short to collect flower nectar, 'cause on the other hand, hummingbirds' beaks are long and narrow.
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3 years ago
The main steps of photosystem 2 include which of the following
Anestetic [448]

Incomplete Question options not given

Photosystem II is the first protein complex in oxygenic photosynthesis's light-dependent processes. It is found in plants, algae, and cyanobacteria's thylakoid membrane.

  • The thylakoid membrane, which is a part of the chloroplast in plant cells, is where Photosystem I and Photosystem II are found.
  • The products of the light dependent processes are delivered to the light independent reactions as ATP and NADPH.
  • Water molecules are divided into oxygen atoms and hydrogen ions when photosystem II pulls replacement electrons from them.
  • The thylakoid compartment retains the hydrogen ions from the water.
  • High energy electrons are transferred from Photosystem II to Photosystem I in the electron transfer chain.
  • The high-energy electrons in the photosystem received energy from sunlight while they were there.
  • Photosystem I releases high-energy electrons into the atmosphere.
  • The high energy electrons join NADP+ and a hydrogen ion after going via an electron transfer chain.
  • ADP and Pi are combined to create ATP with the help of hydrogen ions passing via the ATP synthases.

So to conclude with we can say that the initial protein complex in the light dependent processes of oxygenic photosynthesis is called photosystem II. It may be found in plants, algae, and cyanobacteria's thylakoid membrane.

Learn more about photosystem II here:

brainly.com/question/14427520

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8 0
2 years ago
How can you describe the habitat in which an organism lives?
solong [7]
A niche describes where the organism lives and how it interacts with its environment .
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5 0
3 years ago
contrast the chromosome number in gametes and zygotes in sexual reproduction into your answer in the space provided
Mandarinka [93]

Answer:

Chromosome number in gametes- haploid (n)

Chromosome number in zygote- diploid (2n)

Explanation:

Sexually-reproducing organisms make use of gametes to reproduce. The gametes are produced via the process of meiosis, which is a cell division that results in daughter cells (gametes) that have their chromosomal number reduced by half. A diploid (2n) organism i.e. possess two set of chromosomes undergoes meiosis to produce haploid (n) gametes i.e. contains one set of chromosomes. The male parent produces haploid sperm while the female parent produces haploid egg.

During reproduction, these haploid gametes (sperm and egg) combine in a process called FERTILIZATION to produce a diploid ZYGOTE. The diploid zygote then divides and grows into the full organism. Hence, since a zygote is formed by the fusion of two haploid gametes (sperm and egg), it contains a diploid chromosome number i.e. sperm (n) + egg (n) = zygote (2n)

4 0
3 years ago
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