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Lemur [1.5K]
3 years ago
12

How did van helmont reach his conclusion

Biology
1 answer:
MissTica3 years ago
5 0

Answer: He grew a willow tree in a weighed amount of soil. After five years, he discovered that the willow tree weighed about 74 kg more than it did at the start. As the weight of the soil had hardly changed, van Helmont concluded that plant growth cannot only be due to minerals from the soil.

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Viruses are considered to be nonliving because they do not have the ability to reproduce on their own.
lilavasa [31]

Answer: False!

Explanation: No! They  cannot reproduce, but this does NOT mean that they are not living!

4 0
3 years ago
What is the evidence that transcription and translation occurs?
Schach [20]

It is thought to partition transcription and processing of messenger RNAs (mRNAs), which occur in the nucleus, from protein synthesis (translation), which is observed in the cytoplasm. Several recent reports have challenged this widely accepted idea by asserting that translation can also occur in the nucleus.

6 0
3 years ago
State the purpose of making urine.
olasank [31]
To get rid of excess fluids, and tell you whether or not you need to drink more fluids.
3 0
3 years ago
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There are 25 individuals in population 1, all with genotype AA, and there are 40 individuals in population 2, all with genotype
german

Answer:

a. Genetic drift

Explanation:

  • When there is a change in the frequency of genes in a small population due to chance event as a result of which a few alleles disappear from the population, is known as genetic drift.
  • In the given situation, the population size is small i.e. 25 and 40 respectively and in both these populations, it can be seen that one of the population only has allele A whereas the other has allele a, and because of this it can be concluded that this situation must have arisen due to genetic drift.
  • The populations got established due to random sampling and then the progenies inherited only the alleles of the organism that reproduced and thus, the frequency of the other allele decreased and this is merely a chance event.
8 0
3 years ago
What must be true if prokaryotes evolved into eukaryotes by absorbing other cells
erastova [34]

Answer:

The correct option is 'the ability to absorb other cells gave some prokaryotes a survival advantage.'

Explanation:

The scientists have brought forward the theory of endosymbiosis which explains how eukaryotic cells evolved from prokaryotic cells. According to this theory, the scientists claim that the organelles found today in the cells, once existed as individual prokaryotic cells. These organelles were engulfed by larger prokaryotic cells with time and hence, the eukaryotic cells evolved from these prokaryotic cells. The larger prokaryotes might have engulfed the smaller cells for survival.

4 0
4 years ago
Read 2 more answers
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