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Elanso [62]
3 years ago
14

What must a substance be able to do in order to be used as an acid base indicator

Biology
1 answer:
erastovalidia [21]3 years ago
3 0

The substance must be able to alter its physical characteristic (for example, its color) in accordance to a change in pH. One example of this is litmus paper, which becomes red under acidic conditions and blue under basic conditions.

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Use the punnett squares below to model each parent combination after filling in each Punnett square predict then percentages of
Oduvanchick [21]

The provided question is incomplete as it lacks the combinations of parent as metion in the question, however the complete question is attached as the image.

Answer:

There are two parent combinations that are :

1. heterozygous black Ff cross with heterozygous black Ff

2. heterozygous black Ff cross with white ff

Explanation:

1. in first combination the each parent will produce F and f gametes, as it is shown as Capital F so it will be dominant over f as per the rule. so the cross can be shown as :

    F      f

F  FF    Ff

f  Ff     ff

where, FF are black Ff black and ff white offspring. As there is clearly 3 black offspring over one white spring so the ratio is 3:1 or 75% chances of black and 25% chances of white offspring (phenotype).

2. in second combination there would be F and f gametes for black parent and f and f for white parent, thus the offsprig would be :

    F     f

f   Ff    ff

f   Ff    ff

As, there is two black and two white springs are produced than the ratio would be 2:2 or 50% chances of each white offspring and black offspring (phenotype)

4 0
3 years ago
I GOVE BRAINLIEST!!!
disa [49]

Answer:

Meiosis is important because it ensures that all organisms produced via sexual reproduction contain the correct number of chromosomes . Meiosis also produces genetic variation by way of the process of recombination .

Explanation: Meiosis is important for three main reasons : it allows sexual reproduction of diploid organisms , it enables genetic diversity , and it aids the repair of genetic defects .

Plss follow me and Mark as brainlest

5 0
2 years ago
Read 2 more answers
Many cells make and use an enzyme, called catalase, to facilitate the decomposition of hydrogen peroxide (H2O2). The products of
Len [333]

Answer:

A. It decreases the activation energy needed to start the reaction

Explanation:

Organic catalyst which speed up the rate of organic chemical reaction is living cells are called enzymes.They have specific reaction site called active sites.This must be in prefect shape with the substrate for the organic chemical reaction to take place

When this occurs the minimum amount of  energy of  reaction to  activate or stimulate  the the atoms and molecules of the substrate to undergo chemical reaction is  lowered.This energy of reaction is celled activation energy.

Catalase thought its active sites lowers the activation energy so that the molecules of H2O2 could break down to C02 and H2 faster,thereby reducing the time for theses product to form.The is the general roles of enzyme.To increase the rate of chemical reaction,by reducing the activation  energy.

8 0
3 years ago
Do y’all know what to do for this?
Rus_ich [418]

Answer:

It just seems like you're supposed to give four pieces of evidence of natural selection. If you're still confused, you can always ask your teacher.

Explanation:

7 0
2 years ago
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Imagine that you are the scientist who discovered cells. If you were to give a speech to a group of fellow scientists, what key
jolli1 [7]
<span>The key points about cell theory are as follows:
1. All living organisms are made up of cells; the organisms may be unicellular or multi cellular.
2. The cell is the basic unit of life.
3. New cells are derived from pre-existing cells.
4. All cells maintain homeostasis.
Some new facts have been added to these basic facts; the new facts added include the following:
(A). Energy flow occur withing all living cells.
(B). Hereditary information derived from DNA is passed from cell to cell.
(C).  All living cells are made up of the same basic chemical compositions.</span>
5 0
3 years ago
Read 2 more answers
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