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3 years ago

Which structure is found in the cytoplasm of a prokaryotic cell, but is not found in the cytoplasm of a eukaryotic cell?

Biology

2 answers:

Mamont248 [21]3 years ago

5 0

Answer: DNA.

Explanation:

Cells are classified into prokaryotes and eukaryotes. Prokaryotes arose long before eukaryotes. There are prokaryote fossil dating three billion years old. The eukaryotes probably appeared a billion years ago.

Prokaryotes are cells that do not have a nuclear envelope delimiting the genetic material, then their DNA is found in the cytoplasm of the cell. They also do not have membranous organelles and cytoskeleton, so there is no transport of vesicles involved in the entry (endocytosis) and exit (exocytosis) of substances. This is the case of bacteria and blue algae.

Eukaryotic cells have a nuclear envelope, forming a true nucleus, which protects DNA from cytoskeleton movement. The eukaryote cytoplasm, unlike that of prokaryotes, is subdivided into compartments, increasing metabolic efficiency, which allows them to reach larger size without compromising their functions. These cells are found in protozoa, fungi, plants, and animals.

jok3333 [9.3K]3 years ago

3 0

The answer is DNA.

P.S If you need me to explain more I can just ask! :)

I hope this helps!

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Which of the following statements is FALSE? a) A cell will shrink when the concentration of electrolytes is greater inside the c

uranmaximum [27]

Answer:

a) A cell will shrink when the concentration of electrolytes is greater inside the cell than outside the cell. FALSE

Explanation:

The regulation of cell fluid is caused by molecules called as Electrolytes. The higher concentration of these electrolytes outside the cells or lower concentration inside the cells will suck water outside the cells. Water is pumped to the area where the concentration of electrolytes is high. It is also clears from the Option d) that water follows the movement of electrolytes so it means that water will move to out if the concentration of electrolytes outside the cells is high which will cause shrinkage of cell organelles.

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2 years ago

Different ratios occur in crosses with single gene pairs or two gene pairs. What types of ratios are likely to occur in crosses

likoan [24]

Answer:

Genotype ratio: 1, 1:1, 1:2:1

Phenotype ratio: 1, 3:1

Explanation:

Single gene pair cross is also known as monohybrid cross. This means that only one gene usually with two alleles is observed and it express one trait.

For example, if we name the gene for a certain trait with A, the possible genotypes are AA (dominant homozygous), aa (recessive homozygous) and Aa (heterozygous). Possible crosses are:

P: AA x AA

F1 : all of them are AA

The same is with aa x aa (all of the offspring are with aa genotype)

P: AA x Aa

F1: AA Aa AA Aa (genotype ratio 1:1) (phenotype ratio 3:1)

The same genotype ratio is in aa x Aa (offspring will have aa Aa aa Aa-(genotype ratio 1:1) (phenotype ratio 1:1)

P: Aa x Aa

F1: AA Aa Aa aa (genotype ratio 1:2:1) (phenotype ratio 3:1)

P: AA x aa

F1: Aa Aa Aa Aa (1)

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3 years ago

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Phantasy [73]

I believe the answer to this question is a food web.

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Source: </span>http://www.dictionary.com/browse/food-web

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