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Aleksandr [31]
4 years ago
7

a scientist wants to grow human cells to use in an experiment. what should the scientist do to grow and maintain cells in the la

boratory? Apex
Biology
2 answers:
katrin [286]4 years ago
7 0

The scientist should prepare a culture of the cells

Makovka662 [10]4 years ago
5 0

Answer:

Explanation:

The scientists should prepare a culture of the human cells. It also requires special ingredients like subtrate or medium that will supply essential nutrients like amino acids, vitamins, minerals and carbohydrates to the cells. Growth factors, hormones, important gases like carbon dioxide and oxygen are also required. A regulated environment supported by appropriate pH, temperature and osmotic pressure is also desired for the growth of cells.

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irina [24]

Answer:

9 years

Explanation:

Boa constrictor: 30 years

Boa constrictors are native to North, Central, and South America, mainly dwelling in rainforests. The lifespan for the large, heavy-bodied snake averages about 20 years in the wild, but living in captivity can increase that by 10 to 15 years.

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3 years ago
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How did receptors in the nose and on the tongue help our ancient ancestors survive?
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Answer:Our ancestors’ perception of taste was important for survival and thriving. Now researchers are trying to produce food with reduced calories or salt that remains palatable

Explanation:

Evolution of taste

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Option A - gyres is the correct answer.

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3 years ago
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Ksju [112]

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5 0
2 years ago
Compare the properties of the parent and daughter cells in mitosis and meiosis and explain the reason for any differences.
MariettaO [177]

1. Mitosis takes place within somatic cells (cells that make up the body). Meiosis takes place within gamete cells (sex cells). 


2. One single division of the mother cell results in two daughter cells. Two divisions of the mother cell result in four meiotic products or haploid gametes. 


3. A mitotic mother cell can either be haploid or diploid. A meiotic mother cell is always diploid. 


4. The number of chromosomes per nucleus remains the same after division. The meiotic products contain a haploid (n) number of chromosomes in contrast to the (2nd) number of chromosomes in the mother cell. 


5. It is preceded by an S-phase in which the amount of DNA is duplicated. In meiosis, only meiosis I is preceded by an S-phase. 


6. In mitosis, there is no pairing of homologous chromosomes. During prophase I, complete pairing of all homologous chromosomes takes place. 


7. There is no exchange of DNA (crossing-over) between chromosomes. There is at least one crossing-over or DNA exchange per homologous pair of chromosomes. 


8. The centromeres split during anaphase. The centromeres do separate during anaphase II, but not during anaphase I. 


9. The genotype of the daughter cells is identical to that of the mother cells. Meiotic products differ in their genotype from the mother cell. 


10. After mitosis, each daughter cell has exactly same DNA strands. After meiosis, each daughter cell has only half of the DNA strands

6 0
3 years ago
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