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mestny [16]
3 years ago
5

7. In contrast to eukaryotic cells, prokaryotic cells

Biology
2 answers:
Anuta_ua [19.1K]3 years ago
6 0
All prokarytoic cells replicate through binary fission.
Akimi4 [234]3 years ago
5 0

Answer:

A. have to use binary fission to divide.

Explanation:

Prokaryotic cells (Greek pro: before, karyon: nucleus/kernel) have their genetic material freely suspended in the cytoplasm and don't have a well-defined nucleus bounded by a nuclear membrane. They are simpler cells as compared to eukaryotic cells. They use binary fission for cell division.

EXAMPLES: Bacteria

Eukaryotic cells ( Greek Eu: true/well, karyon: nucleus, kernel) have a well defined nucleus bounded by a nuclear membrane and their genetic material (DNA) is not freely suspended in the cytoplasm. They are more advanced cells as compared to prokaryotic cells. They reproduce by mitosis. The cell cycle of eukaryotes is divided into

  1. Interphase
  2. M phase/ Mitosis (cell divides)

Interphase is further divided into following stages:

  1. G1 phase (cell increases in size)
  2. S phase (cell copies its DNA)
  3. G2 phase (cell prepares for division)

M-phase/Mitosis is further divided into following stages:

  1. Prophase
  2. Metaphase
  3. Anaphase
  4. Telophase

Interphase is the longest period of cycle and a cell typically spends most of its life in interphase.

EXAMPLES: Human cells, Plant cells

Coming back to the question.

In contrast to eukaryotic cells, prokaryotic cells

A. have to use binary fission to divide.

  • This is the correct answer as prokaryotic cells undergo binary fission.

B. have a cell cycle that includes interphase and mitosis.

  • Eukaryotic cell cycle includes interphase (G1, S, and G2 phases) and mitosis. Interphase and mitosis are not the features of prokaryotic cell cycle.

C. have to pass through the G1 , S, and G2  phases to prepare for division.

  • G1, S, and G2 are the stages of interphase which is a part of eukaryotic cell cycle. These are not the part of Eukaryotic cell cycle.

D. have to go through prophase, metaphase, anaphase, and telophase.

Prophase, metaphase, anaphase, and telophase are stages of mitosis. Prokaryotic cells don't undergo mitosis and hence they don't go through these steps.

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Explanation:

Carbon dioxide is a<u> product </u>of cellular respiration.

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Further Explanation:

In all eukaryotic cells mitochondria are small cellular organelles bound by membranes, these make most of the chemical energy required for powering the biochemical reactions within the cell. This chemical energy is stored within the molecule ATP which is produced. Respiration in the mitochondria utilizes oxygen for the production of ATP in the Krebs’ or Citric acid cycle via the oxidization of pyruvate( through the process of glycolysis in the cytoplasm).

Oxidative phosphorylation describes a process in which the NADH and FADH2 made in previous steps of respiration process give up electrons in the electron transport chain these are converted it to their previous forms, NADH+ and FAD. Electrons continue to move down the chain the energy they release is used in pumping protons out of the matrix of the mitochondria.

This forms a gradient where there is a differential in the number of protons on either side of the membrane the protons flow or re-enter the matrix through the enzyme ATP synthase, which makes the energy storage molecules of ATP from the reduction of ADP. At the end of the electron transport, three molecules of oxygen accept electrons and protons to form molecules of water...

  • Glycolysis: occurs in the cytoplasm 2 molecules of ATP are used to cleave glucose into 2 pyruvates, 4 ATP and 2 electron carrying NADH molecules. (2 ATP are utilized for a net ATP of 2)
  • The Citric acid or Kreb's cycle: in the mitochondrial matrix- 6 molecules of CO2 are produced by combining oxygen and the carbon within pyruvate, 2 ATP oxygen molecules, 8 NADH and 2 FADH2.
  • The electron transport chain, ETC: in the inner mitochondrial membrane, 34 ATP, electrons combine with H+ split from 10 NADH, 4 FADH2, renewing the number of electron acceptors and 3 oxygen; this forms 6 H2O, 10 NAD+, 4 FAD.

Learn more about cellular life at brainly.com/question/11259903

Learn more about cellular respiration at brainly.com/question/11203046

#LearnWithBrainly

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