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Kisachek [45]
3 years ago
8

HELP URGENT!!!!!!!!!!!!!!​

Biology
1 answer:
pashok25 [27]3 years ago
4 0
If the paramecium was not able to contract its contractile vacuole, it would be in danger of bursting. The cell would not be able to hold too much water. This would happen faster if the paramecium was in water with a low salt concentration because there is more water and less salt, so the water would accumulate faster.
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Which of the following is NOT made up of eukaryotic cells? *
never [62]
Bacteria is your answer
8 0
2 years ago
Women who are capable of becoming pregnant should consume ________ per day of synthetic folate from fortified foods and/or suppl
pochemuha

Answer: 400 Micro-grams

Explanation:

  The institute of the medicine, suggest all the women who are pregnant should consume atleast 400 micro-gram per day. In year 1998, this institute take the responsibility to recommend all the pregnant women about their diet plans.

They recommended to take 40 micro gram per day of the synthetic folic from the supplements and fortified food. The folic acid is the type of synthetic vitamin B. The women should consume the food from, the varied diets as it helps to prevent the brain of the baby and also from birth defects.

 

8 0
3 years ago
Explain how cells specialize to form specific tissue and organs?
S_A_V [24]
<span>All cells have the same DNA. They are different because different genes have been locked up and only some of them are expressed. The process began in the embryonic stage, when stem cells are turned into different types of cells by turning off some of the genes. Scientists have been looking for ways to reverse the process, meaning turning specialized cells back into stem cells. Some success has been reported using different methods. The latest one uses a weak acid to stress the cells.</span>
5 0
3 years ago
What is happening in the East African rift zone
gregori [183]
The rift<span> is a narrow </span>zone<span> that is a developing divergent tectonic plate boundary, in which the </span>African<span> Plate is in the process of splitting into two tectonic plates, called the Somali Plate and the Nubian Plate, at a rate of 6–7 mm annually.</span>
7 0
3 years ago
how does the random alignment of homologous chromosomes contribute to genetic variation in a population
SCORPION-xisa [38]

The assortment of homologous chromosomes during meiosis is random and generates genetic variation, the raw material for evolution.

During metaphase I of meiosis, homologous chromosomes are lined up at the equator plate of the cell in order to be separated (assorted) in anaphase I.

The separation of homologous chromosomes during meiosis I is random. Daughter cells receive unique gene combinations from an original parent cell.

Subsequently, haploid cells got from two successive meiotic divisions fuse during fecundation to form a diploid (2n) zygote.

During prophase I, non-sister chromatids interchange genetic material by a process known as recombination. This genetic process also increases genetic variation in daughter cells.

In conclusion, the assortment of homologous chromosomes during meiosis is random and generates genetic variation.

8 0
3 years ago
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