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inna [77]
3 years ago
6

Nêu đặc điểm cấu tạo hóa học của ADN

Biology
1 answer:
Assoli18 [71]3 years ago
3 0

Answer:

Thailand

Explanation:

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The head of the sperm contains ______________ and _____________
gregori [183]

Answer:

Nucleus and acrosome

Explanation:

Human sperm is the male gamete or sex cell formed by spermatogenesis. It is made of a head, neck, a middle piece and a tail. The sperm head consists of a haploid nucleus and anterior to nucleus, an acrosome. The nucleus contains DNA and nuclear protein and it transfers genetic features from the male to the next generation. The acrosome contains an important enzymes, hyaluronidase and acrosin. These enzymes help to enter head into an ovum.

6 0
3 years ago
How is mitochondrial DNA inherited
Alchen [17]

Answer:

Explanation:

mitochondrial DNA is inherited exclusively from the mother. This would indicate that the two systems are inherited independently, so that there should be no association between an individual's nuclear DNA and mitochondrial DNA.

5 0
2 years ago
What would be the outcome of meiosis i if none of the homologous chromosomes separate at anaphase?
iogann1982 [59]
One daughter cell would be 2n the other would have no chromosomes
3 0
3 years ago
High-energy electrons are transported from chlorophyll to other molecules in the chloroplast by
nirvana33 [79]

Answer:

The most appropriate answer would be C.electron carriers such as NADP⁺.

High energy electrons are transported through electron transport chain embedded in a thylakoid membrane in order to produce energy rich compounds such as ATP and NADPH.

It is also called as light dependent reaction of photosynthesis. It includes four major protein complexes: photosystem II, photosystem I, cytochrome b6f complex, and ATP synthase.

The electron first gets excited from chlorophyll a present in the reaction center (P₆₈₀ and P₇₀₀) of two photosystems (PS II and PS I) . The electron in PS II is replenished by photolysis of water.

Different electron carriers (such as plastoquinone, plastocyanin, pheophytin, chlorophyll A₀ etc) are present which help in transferring this high energy electron from one complex to another. NADP⁺ is the final acceptor of the electron and gets reduced to NADPH.

NADPH and ATP are then used in dark reaction in order to fix carbon into sugars.


4 0
3 years ago
In which of the following ways do animals get the water that they need to survive?
vitfil [10]

Answer:

D

Explanation:

It is D because animals cannot drink thought their skin, a and b dont really make sense. Think about a dog drinking water

3 0
3 years ago
Read 2 more answers
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