Answer: Option A) sister chromatids
In mitosis, each chromosome is made up of sister chromatids that carry the same alleles.
Explanation:
During the fourth phase of mitosis (Anaphase) the sister chromatids part company and migrate to the opposite poles, each with the same alleles since no crossing over occurred.
Thus, mitosis results in two daughter cells that have the same chromosome make-up as the original parent cell.
Answer:
The statement supported by the description of the process of protein synthesis determined by DNA and its packaging and sorted by the Golgi apparatus is that various organelles within a cell interact with each other to carry out life processes (option D).
Explanation:
From the transcription of RNA from DNA to protein synthesis and its packaging and distribution, the participation of organelles is observed:
- <em>Cell nucleus</em><em>: contains the DNA and is where the transcription into mRNA occurs.
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- <em>Ribosomes</em><em>: where the mRNA is coupled to produce translation and protein synthesis.
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- <em>Rough endoplasmic reticulum</em><em>: contains ribosomes and participates in the process of membrane protein synthesis, also contributing to their conjugation, glycosylation or sulfonation.
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- <em>Golgi apparatus</em><em>: it is in charge of receiving synthesized proteins, packaging and distributing them to be sent to the extracellular space or other cells.
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In this way, the coordination of the functions of various organelles is useful and necessary to fulfill vital functions. The statement that varoius organelles within the cell interact with each other to carry out life processes is, therefore, correct.
<em>The options for this question are:</em>
<em> A. Organelles within a cell act independently of each other at all times
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<em> B. Some organelles are more important than other organelles within a cell.
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<em> C. Only up to three organelles may interact with each other at any given moment in time.
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<em> D. </em><u><em>Various organelles within a cell interact with each other to carry out life processes.</em></u>
Answer:
- Label A - G1 phase
- Label B - S phase
- Label C
- G2 phase
- Label D - Mitosis
- Label E - interphase
Explanation:
Label A - G1 phase (First gap phase): during this phase, cell grows, forms more protein, RNA and copies cell organelles.
Label B- S phase (Synthesis phase): during this phase, synthesis of DNA and its replication occurs.
Label C- G2 phase (Second Gap phase): during this phase the cell grows more, makes protein and cell organelles.
Label D – Mitosis: during mitosis the cell divides its nucleus and cytoplasm to produce two daughter cells.
Label E- Interphase : A stage of cell growth and metabolic activity. The G1,S and G2 phases together called interphase.
Answer:
inter-phase
Explanation:
The Eukaryota cell spends most of its "life" in inter-phase of the cell cycle, which can be subdivided into the three phases, G1, S and G2. During inter-phase, the cell does what it is supposed to do. Though cells have many common functions, such as DNA replication, they also have certain specific functions.
