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4 years ago

What cell uses photosynthesis?

Biology

2 answers:

AVprozaik [17]4 years ago

6 0

The plant cell because it has the organelle chloroplast which specializes in photosynthesis.

babunello [35]4 years ago

3 0

In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

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The video compares the key similarities and differences between mitosis and meiosis. Determine which events occur in mitosis, me

notka56 [123]

Answer:

Mitosis:

A single division occurs, separating sister chromatids

End result is two diploid cells that are genetically identical to each other and the parent cell

Meiosis:

The first division separates homologous pairs; the second division separates sister chromatids

Homologous chromosomes pair up and form chiasmata

Homologous pairs of chromosomes line up on the metaphase plate

Daughter cells contain recombinant chromosomes

End result is four haploid cells that are genetically different from each other and the parent cell

Mitosis and Meiosis:

Chromosomes duplicate during interphase

Process starts with a diploid cell

Duplicated chromosomes line up Individually on the metaphase plate in a diploid cell

Explanation:

Mitosis is the division of vegetative cells while meiosis involves the division of sex cells. Both divisions start with diploid parental cells but while the daughter cells in mitosis are also diploid, those of meiosis are haploid. This is why mitosis is referred to as equational division while meiosis is known as reductional division.

A cell that will undergo mitosis or meiosis would first have its genetic materials duplicated during interphase in addition to the synthesis of other important biochemicals such as proteins. Mitosis involves just a single division of the sister chromatids with two genetically identical daughter cells who are also clones of the parent cells resulting.

Meiosis, on the other hand, involves two divisions - the first one happens to separate homologous chromosome pairs while the second division separates sister chromatids just like in mitosis. During the early stage of meiosis, homologous chromosomes synapsed through the formation of a synaptonemal complex to form tetrads. Thereafter, synapsed chromosomes exchange chromosomal segments at a point known as chiasmata. All these happen at the prophase stage of meiosis I. The paired homologous chromosomes are then lined up at metaphase where they are engaged by the spindle fibers.

Meiosis II and mitosis are more or less the same with the chromosomes condensing at the prophase and the formation of metaphase plates at the metaphase. Sister chromatids are pulled apart and they migrate to the opposite poles at the anaphase and telophase.

8 0

3 years ago

Describe major challenges to the green environment that are caused directly or indirectly by the built environment

Digiron [165]

Answer:

this may help

Explanation:

3 0

3 years ago

What do you think might be the advantage of analyzing an ecosystem?

nika2105 [10]

You can see if there’s pollution, if the ecosystem is unbalanced or balanced, and you can identify the animals that call the ecosystem home.
Hope that helps

5 0

4 years ago

Is fructose-1,6-bisphosphatase activated, inhibited, or unaffected in response to a glucagon signal?

Crazy boy [7]

Fructose-1, 6-bisphosphatase is activated in response to a glucagon signal.

<h3>What is the purpose of Glucagon signals?</h3>

Glucagon signals specify that fuel molecules are required in the bloodstream.
So these signals activate Fructose-1, 6-bisphosphatase (F1, 6BP) so as to increase the level of sugar and other fuels required for production of energy.
In the process of gluconeogenesis, new glucose molecules are synthesized from other non carbohydrate sources.
As glucose is required in the bloodstream so F-1, 6BP should be activated as it acts as a rate limiting enzyme in gluconeogenesis.
Gluconeogenesis occurs when the dietary intake of glucose is very low.
Glucose is required as a source of energy by almost all body cells so in case of less oxygen it is synthesized from other molecules like amino acids.

Learn more about gluconeogenesis here:

brainly.com/question/1425339

#SPJ4

7 0

2 years ago

Which group of algae is believed to be the ancestor of land plants?

ycow [4]

Answer:

stonewort, and many green algae such as the Spirogyra.

Explanation:

As it was believed that the land algae were believed to be evolved from the stonewort plant and the blue-green algae like the cyanobacteria and the spirogyra that colonized the lands some 500 mn years ago was a freshwater alga.

After which the first land plants occur about 470 million years ago, and they were in the form s of moss and liverworts of the vascular in origin.

7 0

3 years ago