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geniusboy [140]
3 years ago
8

The cell membrane of a plant is surrounded by a thick which supports and protects the cell

Biology
1 answer:
Marat540 [252]3 years ago
4 0
That would be the cell wall

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Read each of the sentences that describe a phase of meiosis. Place each sentence into the correct box.
Allushta [10]

Answer:

prophase 1(Homologous chromosomes pair to form a tetrad.

prophase 1(Crossing-over may occur between the non-sister chromatids).

Metaphase 1 (Homologous chromosomes line up at the center of the cell.)

Anaphase 1 (Homologous pairs separate and move towards opposite ends of the cell)

Telophase 1 (A nuclear membrane forms and cytokinesis follows).

Metaphase 2 ( The haploid number of duplicated chromosomes line up at the metaphase plate.

Anaphase 2 (Sister chromatids separate and become daughter chromosomes that move to the poles)

Meiosis 2: Four haploid daughter cells are formed that are not genetically identical.

Explanation:

Meiosis is a type of cell division that gives rise to gametes ( offsprings). This type of cell division occurs only in the reproductive organs. A diploid cell has two sets of chromosomes: one from the female parent and the other one from the male parent. When the diploid cell undergoes meiosis, the chromosome replicate once and the nucleus and cell duplicate twice giving rise to four haploid gamete cells.

The phases of meiosis occurs in two step divisions. Homologous pairs separate during the first round cell division which occurs in MEIOSIS 1 while the sister chromatids separate in the second nuclear division called MEIOSIS 2.

In each round of division, cells go through four stages: PROPHASE, METAPHASE, ANAPHASE, and TELOPHASE. The specific events that occur in these stages are already listed in the above answer.

Generally, at the start of meiosis, each member of a homologous pair of chromosomes, which are made up of two chromatids, moves to lie side by side. While they are thus paired, genetic material is exchanged between the chromatids. This is known as CROSSING OVER.

When the nucleus divides for the first time, the chromosomes in a given pair( not the chromatids) separate and move to opposite ends of the cell. This results in only half the number of chromosomes going to each daughter cell.

During the second nuclear division, the chromatids separate and move to opposite ends of each daughter cell giving rise to four gamete cells, each with a haploid number of chromosomes.

7 0
3 years ago
Read 2 more answers
An individual has a genetic disorder in which their cell is not forming the correct protein structure for the cell membrane to a
Andru [333]

Answer:

The type of regulation of gene expression that would have the greatest chance of success is Posttranslational control (E).

Explanation:

The defect is found on the structure of the protein, this means that the process of formation of the protein and the codons responsible for each amino acid in the protein is in correct order, this set the transcriptional and translational process aside as being correct.

Therefore, the problem lies in the formation of secondary or tertiary structure of the protein which requires a good number of proteins also, wherein lies tha main problem in the cell membrane protein. Thus the regulation of the posttranslational process and correction of the proteins needed at this stage will give the best chance of success.

3 0
3 years ago
Movement of a bone toward the midline of the body is known as
polet [3.4K]
The movement of a bone toward the midline of the body is known as an abduction.
7 0
3 years ago
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What are 10 living things
My name is Ann [436]

<em>Answer:</em>

<em>Ejemplos de seres vivos: </em>

<u><em>Animales: puma, gato, ballena, cóndor, etc. </em></u>

<u><em>Flores: rosa, maravilla, clavel, tulipán, etc. </em></u>

<u><em>Plantas: helecho, filodendro, ficus, alga, etc. </em></u>

<u><em>Árboles: manzano, palmera, pino, etc. </em></u>

<u><em>Seres humanos: niño, mujer, abuelo, etc.</em></u>

<em>Explanation:</em>

<u />

8 0
3 years ago
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Which of the following is true of receptors for dynamic equilibrium?
kotykmax [81]
I think the correct answer from the choices listed above is the third option. Receptors  for dynamic equilibrium would be located in the vestibule of the ear. It is called the vestibular apparatus where the <span>equilibrium receptors in the semicircular canals and vestibule are found.</span>
5 0
3 years ago
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