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3 years ago

How is phospholipid bilayer arranged? and why does it arrange that way?

1 answer:

4 0

It arranges as 2 layers of phospholipids where the hydrophilic(water-loving) heads face toward the outside and the hydrophobic(water-hating) tails are on the inside. They arrange like this to allow for selective permeability which is why this is what a cell's plasma membrane is made up of.

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PLEASE HELP 15 POINTS!!!

RUDIKE [14]

The biosphere is everything. the whole planet. so all of the above is right

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3 years ago

Read 2 more answers

Using a food label, explain what each section will tell you and why that would be important to, say, a long-distance runner.

Harlamova29_29 [7]

Answer:

The following are the sections which can be seen in a food label:

1) Product dates:

Under this section look for the production date and the expiry date ( best before). The production date tells when the food was made. The expiry date tells the date before which the food has to be used.

2) Ingredient list:

The list of all the ingredients used for the preparation of the food is mentioned.

3) Nutrition Facts Label

At the top of this label, we will see the total number of servings and size of the container. Thus table shows some key nutrients and the percent of them present in the container of food. It also shows the calories of each. Percent Daily Value (DV) shows the percentage of each nutrient present.

The nutrient label are important to an athlete because he/she needs to take a diet which is capable of filling us nutrient requirements. Athletes tend to perform well when they have a balanced diet. To get a balanced diet, they need to look at the nutritional values.

7 0

3 years ago

Solar energy is utilized to convert inorganic carbon, in the form of carbon dioxide, into organic carbon compounds, such as gluc

Lerok [7]

B) Photosynthesis The Sun is the ultimate source of all energy in the universe. Plants being the main primary producers or autotrophs, use solar energy to make their own food through photosynthesis, thus converting energy into the organic matter that can be consumed by all organisms. They form the basis of almost all food chains from where consumers derive their food.

7 0

3 years ago

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determine the ratio of average maximum elongation rate for the modified RNA polymerase compared to the wild strain RNA polymeras

Vinil7 [7]

Answer:

Check the c in the explanation

Explanation:

a) RNA has three components - 1) 5 - carbon ribose sugar (2) phosphate group (3) nitrogen base

RNA polymerase is an enzyme involved in transcription where genetic material DNA is transcribed into RNA ( mRNA,rRNA,tRNA).

b) the dependent variable here is what we are looking in the experiment , here it is number of nuceotides per second ,the transcription efficiency of RNA polymerase. And the two controls are important wild type without drug and experimental strain without drug these two tells about baseline of transcription rate of an enzyme. so that one can explain the drug effect on a enzyme.

c) In both wild type and exp strain upon treatment with amanitin the transcription rate decreased in exp strain it is not significant whereas in wild type the effect is much higher compare to exp strain and it is significant. this suggests that the mutation in experimental strain must be on larger subunit of the RNA pol enzyme. that mutation might be showing effect of binding drug to the enzyme and also has a role for its enzyme activity.

and the reduction of transcription rate is 100% efficient in wild type compared with exp strain.

d) a null hypothesis is a general statement in a statistics where there is no measured phenomenon between groups.

the change in the amino acid is an important clue, tells that there is no effect in transcription rate between experiment strain with and without drug . which in turn tells that the mutation is imp for the activity of the Enzyme for its role.

Kindly check the attached image below

4 0

3 years ago

Nutrientes del ovocito???

Lelechka [254]

The nutrients are grams gram gram

3 0

3 years ago