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notka56 [123]
3 years ago
10

True or falsemany trials are not needed before a hypothesis can be accepted as true

Biology
2 answers:
konstantin123 [22]3 years ago
5 0
I believe it's false
Allisa [31]3 years ago
3 0
I'm not completely positive but I think the answer is true. Whenever you get the correct answer let me know so I can see if I was right!! Good luck!
You might be interested in
Reactant product
gogolik [260]

Answer:

4 grams

Explanation:

If in an experiment, we have 4g of reactants, the mass of the products will also be 4g.

This is in compliance with the law of conservation of mass in a chemical reaction.

According to this law,

  "in a chemical reaction, matter is neither created nor destroyed but changed from one form to another".

If:

      A + B →  C

         4g        4g

mass of A and B must be equal to the mass of the product according to the law of conservation of mass.

4 0
2 years ago
Imagine there is a drought. You are a scientist and you need to find a way to get more water into the atmosphere. What would you
mariarad [96]

not gonna lie, this is more of an answer you'd have to answer yourself. It seems like an easy question just think about it. If you're a scientist in a drought, think about places where youd be able to get water. Some plants produce water as well. Soil holds water, Even under normal climatic conditions, about 90 per cent of the precipitation is said to be released back into the atmosphere.

4 0
2 years ago
A young animal has never had much energy. He is brought to a veterinarian for help and is sent to the animal hospital for some t
xz_007 [3.2K]

Answer:

A. His mitochondria lack the transport protein that moves pyruvate across the outer mitochondrial membrane.

Explanation:

Pyruvate is from the breakdown of carbohydrates such as glucose through glycolysis. Glucose enters the cytosol through specific transporters (the GLUT family) and is processed by one of several pathways depending on cellular requirements. Glycolysis occurs in the cytosol and produces a limited amount of ATP, but the end product is two 3-carbon molecules of pyruvate, which maybe diverted again into many pathways depending on the requirements of the cell. In aerobic conditions, pyruvate is primarily transported into the mitochondrial matrix and converted to acetyl-coenzyme A (acetyl-CoA) and carbon dioxide by the pyruvate dehydrogenase complex (PDC).

Initially it was proposed that pyruvate was able to cross the membrane in its undissociated (acid) form but evaluation of its biochemical properties show that it is largely in its ionic form within the cell and should therefore require a transporter.

Transport of pyruvate across the outer mitochondrial membrane appears to be easily accomplished via large non-selective channels such as voltage-dependent anion channels/porin, which enable passive diffusion. Indeed, deficiencies in these channels have been suggested to block pyruvate metabolism

7 0
3 years ago
Why do the chromosomes line up in the middle of the cell
jeka94

Answer:

QUESTION:

Why do the chromosomes line up in the middle of the cell?

ANSWER:

Chromosomes line up at the metaphase plate, under tension from the mitotic spindle. The two sister chromatids of each chromosome are captured by microtubules from opposite spindle poles. In metaphase, the spindle has captured all the chromosomes and lined them up at the middle of the cell, ready to divide.

Explanation:

Hope that this helps you out! :)

Have a great rest of your day/night!

7 0
3 years ago
Read 2 more answers
F.8.2b Which of the following is a principle of natural selection?
Dmitry_Shevchenko [17]

Answer:

D.) Helpful variations allow individuals to survive and reproduce better than members who lack these variations.

Explanation:

Variation is one of among the principles of natural selection.

Variations occur naturally thereby favouring some individual groups over the other.

In the above example, the helpful variations naturally select the parents of the offsprings while the other members of the group are disadvantaged.

4 0
3 years ago
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