Which of the following is A true statement about heat transfer through conduction convection or radiation?

Why do phospholipids form a bilayer in water?

Alex

When phospholipids are mixed with water, they spontaneously rearrange themselves to form the lowest free-energy configuration.

4 0

3 years ago

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Two autosomal genes control horn color in dragons. Pure-breedinggold-horned dragons were mated to pure-breeding silver-horneddra

horrorfan [7]

Answer:

The genetically based phenotypic ratio for of Gold: Silver: Bronze = 9:1:6

The expected number of gold-horned dragons is = 144

The expected number of silver-horned dragons is = 16

The expected number of bronze-horned dragons is = 96

Explanation:

Given that; F2 generation consisted of:

147 gold

17 silver

92 bronze.

Total autosomal genes control horn color in dragons = 256

When we conducted the punnet square for the Pure-breedinggold-horned dragons were mated with the pure-breeding silver-horneddragons, then intercrossed them for the F2 generation, It is seen that;

The genetically based phenotypic ratio for of Gold: Silver: Bronze = 9:1:6

∴

The expected number of gold-horned dragon = $256*\frac{9}{16}$

= 144

The expected number of silver- horned dragon = $256*\frac{1}{16}$

= 16

The expected number of Bronze-horned dragon = $256*\frac{6}{16}$

= 96

Null Hypothesis = The observed ratio of Gold:Siver:Bronze

=144:16:96

=9:1:6

Observed Expected (OF - EF)² $\frac{(OF-EF)^2}{EF}$

Frequency Frequency

(OF) (EF)

147 144 9 0.062500

17 16 1 0.062500

92 96 16 0.166667

Total: 0.291667

Since Degree of Freedom = 2

Our P-Value = 0.864

∴ Our P. Value is very high that we accept the null hypothesis

7 0

3 years ago

Pepsin is an enzyme produced in the stomach. Pepsin has an optimum pH that is very acidic, between a pH of 1.0 and 2.0. In an

kiruha [24]

Explanation:

the pepsin enzyme will not be able to work in a basic medium when ph raised from 2 to 11 it's efficiency will be affected and will not be in a condition of digesting protein .

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8 0

3 years ago

After a scientist finishes conducting an investigation, he or she is expected to publicly present the results. Why is it importa

slavikrds [6]

Answer:The correct answer will be- to evaluate the results and provide instructions to researchers.

Explanation:

A scientific method is a systematic approach to answer and understand the natural phenomenon.

The last step in the scientific method is to communicate the results with other scientists which could be done through publishing the results in peer-reviewed journals and presenting the results in conferences where the results could be discussed.

The scientist needs to share the results to scientists so that the scientific community can evaluate the results, as well as the results, provides the instructions to other researchers so that they can repeat their experiment.

Thus, to evaluate the results and provide instructions to researchers is the correct answer.

Explanation:

7 0

3 years ago

What are the key features of life? Select all that apply. Organisms acquire energy and nutrients through consumption of other or

miv72 [106K]

Answer:

Organisms sense and respond to changes in their environment.

Organisms are composed of one or more cells.

Life is sustained by inputs of energy and nutrients.

Genetic information in the form of DNA is passed to offspring.

Explanation:

Not all organisms acquire energy by consuming other organisms. Most green plants, for example, are able to produce their own food by photosynthesis.

Organisms are able to sense and respond to changes in their environment. Without these, survival would be limited. Plants are able to sense and respond to light, water, gravity, etc. while animals are able to sense dangers and run away from them.

According to the cell theory, all living organisms are made up of cells. The simplest organism must contain, at least, a cell, while more complex organisms are made up of several cells.

Life is generally sustained by the input of energy from the sun and that of nutrients from reservoirs such as soil. Plants are able to manufacture their foods by using the energy from the sun and other animals either depend directly or indirectly on plants for their own energy. Important nutrients are cycled from their reservoirs to living organisms and vice versa.

Genetic information in the form of DNA is passed from one generation to another during reproduction. Reproduction is an important attribute of living organisms and it remains the only way life is sustained on the planet.

5 0

4 years ago