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Verizon [17]
2 years ago
14

Louis Pasteur performed a series of experiments that disproved spontaneous generation. What aspect of his design represented the

experimental part of the test
Biology
1 answer:
raketka [301]2 years ago
3 0

Answer:

Two different kinds of flasks were used - regular and swan-necked

Explanation:

In his experimental design, Louis Pasteur used tow flasks. One of the flask was regular flask and the other was swan necked. He used these flasks to boil a meat broth. In the swan neck flask, air could enter but microorganisms could not. As a result, there was no grown seen in that flask. In the regular flask, microorganisms could enter and they spoiled the meat. Hence, the two different types of flasks were his experimental design.

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I believe the answer is B!
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Describe at least 2 patterns you notice about objects in the solar system using the model provided.​ (the solar system)
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Planets like, mercury, venus earth: they are in the increasing order of there masses. however this chain breaks at mars.

  • 2nd pattern

Planets like, jupiter, saturn, uranus, neptune are arranged in decreasing order of there masses.

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4 0
3 years ago
Pepsin is a digestive enzyme. It is made in an inactive form, pepsinogen, which is activated by the acidity of the stomach to se
Paladinen [302]

Answer: Positive feedback loop

Explanation:

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This acidity is a result of the presence of hydrochloric acid, which is part of the secretion composition. In addition to it, water, pepsinogen (which will give rise to the enzyme pepsin) and the intrinsic factor. The acid has a function of the protection of the entire system by eliminating microorganisms. It is also responsible for the activation of pepsin (which only occurs with acid pH), the enzyme that digests proteins containing the amino acids leucine or phenylalanine or tryptophan or tyrosine.

The concept of Positive feedback loop states that the body tries to increase the value of a variable (acidity, in the case of pepsinogen) when it is below its optimal value (called a point adjustment) and decreases this value when it is above optimal.

5 0
3 years ago
The level of protein structure that describes all aspects of the three-dimensional folding of a polypeptide is referred to as
vfiekz [6]
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3 0
3 years ago
A man who has type B blood has children with a woman who has type A blood. A. If they are both heterozygous for this trait, pred
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Answer:

The possible blood types of their children are: type AB (iAiB), type A (iAi), type B (iBi), type O (ii)

Explanation:

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Blood type A - iAiA or iAi

Blood type B - iBiB or iBi

Blood type O - ii

According to this question, a man who has type B blood has children with a woman who has type A blood. They are both heterozygous, meaning that the man's genotype is "iBi" while the woman's genotype is "iAi". Both parents will produce gametes as follows:

iBi = iB and i

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Using these gametes in a punnet square (see attached image), the following possible blood types are produced in the offsprings:

- type AB (iAiB)

- type A (iAi)

- type B (iBi)

- type O (ii)

6 0
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