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4 years ago

During diffusion molecules move where?

Biology

2 answers:

maria [59]4 years ago

7 0

Answer:

From a region of higher concentration to a region of lower concentration.

Explanation:

Diffusion is a process where by molecules move from an area or a region of high concentration of the molecules to an area with a lower concentration without the aid of a permeable membrane.

kipiarov [429]4 years ago

4 0

Diffusion. Passive transport is a way that small molecules or ions move across the cell membrane without input of energy by the cell. ... Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration.

have a great day!!

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2 years ago

What is one advantage of sexual reproduction over asexual reproduction?

ASHA 777 [7]

Answer:

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Explanation:

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3 years ago

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3 years ago

At a basic level mitosis and meiosis are similar processes. However, they have very different outcomes. Which of the following s

Dafna1 [17]

Answer: C. Homologous chromosomes are separated in meiosis but not in mitosis.

Explanation: There are two main types of division that take place in eukaryotic cells, mitosis, and meiosis. Mitosis is the type of division that is used for growth, repair, and replacement of tissues. Therefore it is not necessary that the cells have different chromosome numbers or are varied genetically in the daughter cells in the case of mitosis.

Meiosis is the division that takes place to form the gametes for sexual reproduction. It is important in the first stages of meiosis I, to introduce variation and to halve the chromosome number.

Chromosomes numbers are halved (from 46 to 23) during meiosis I because the gametes (sperm and egg) come together and fuse during fertilization to form a zygote. When this fusion occurs (23 from the zygote and 23 from the egg), the chromosome number needs to be returned to that of the parent cell (46).

<h2>Genetic variation is introduced during synapsis which only occurs in meiosis, not mitosis. Homologs exchange genetic information during crossing over of synapsis. Entire chromosomes also separate during meiosis I. </h2>

At the end of meiosis, four genetically unique cells are produced with half the number of chromosomes as the parent cell (23 cromosomes) . After the process of mitosis is completed, two cells genetically identical to each pther are produced and have the same number of chromosomes as the parent cell (46 cromosomes).

Genetic variation is actually important because of changing environmental conditions.

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3 years ago