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Alexxx [7]
3 years ago
13

The sugar and phosphate portions of DNA molecule function mainly to

Biology
1 answer:
Anni [7]3 years ago
3 0

Answer:

Store and transfer genetic information

Explanation:

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Please help me in my homework (keep it simple,i couldnt find Science ;-; I am sorry) What is environment? What are three main as
meriva

Answer: It is then the space in which the life of living beings and the interaction between them and other things takes place. It is made up of living organisms, abiotic elements and artificial elements. It includes physical, chemical and biological components of the organisms and elements that form it. It is important because it is the place of habitat of humanity, it provides natural elements such as water and food, it provides fuels and raw materials that serve to manufacture artificial things and it contributes to the sustainability of life on the planet.

Explanation:

The environment is a system made up of living organisms (such as animal and plants), abiotic elements (lifeless, such as stones or water) and artificial elements (created by man, such as buildings) that are related to each other and can be modified by human action. <u>It is then the space in which the life of living beings and the interaction between them takes place</u>.

It includes physical, chemical and biological components of the organisms and elements that form it. That is, how is its composition and its function in the environment.

The importance of the environment lies in:

  • It is the place of habitat of humanity, so it influences the life of human beings and future generations. It is the space where life develops at this time with all living beings and their natural components.
  • It provides natural elements such as water and food since it offers all its natural resources needed by the human being.
  • It provides fuels and raw materials that serve to manufacture the artificial things we use daily, to build houses, have light, transport, among many other benefits to exist.
  • In the environment we find a great biological diversity of plants and animals that help maintain the ecological balance of the earth. This contributes directly to the sustainability of life on the planet. Each organism has a unique role to play.

Therefore, all societies must guarantee their care for their existence and make rational use of all their resources.

7 0
3 years ago
To assess Mendel’s law of segregation using tomatoes, a true-breeding tall variety (SS) is crossed with a true-breeding short va
lapo4ka [179]

Answer:

0.949367 ≈ 0.95.

Explanation:

The chi square analysis can be done by the formula as follows:

Chi square = (O-E)²/E

Here, O is observed value and E is expected value.

The tall trait follows the Mendel's law, this means the cross between F1 results in the formation of progeny with ratio 3( tall) : 1 (short).

The observed values for set I is  63 tall, 16 short.

The expected value for tall plant =  \frac{3}{4}\times79 = 59.25 .

The expected value for short plant = \frac{1}{4}\times79 = 19.75.

Put these value in the formula for chi square analysis:

For tall plants = ( 63 - 59.25)²/ 59.25= 0.237.

For short plants = (16 - 19.75)²/ 19.75 = 0.712

Total value for set I = 0.237 + 0.712 = 0.95.

Thus, the answer is 0.95.

6 0
4 years ago
Which disturbance would result in primary succession ?
NikAS [45]
A disturbance would be things like lava, flows, newly formed sand dunes, or rocks left from a retreating glacier. These are disturbances because Primary Successions happen in lifeless areas, which soil is incapable of sustaining life.
4 0
3 years ago
Which is NOT true about eukaryotic cells?
Blizzard [7]

Answer:

C

Explanation:

eukaryotic cells do have a nucleus, so it would be wrong to say that they don't have a nucleus.

7 0
2 years ago
Please help me answer these questions!
Harrizon [31]
#6 is A. They are all composed of one or more cells.
7 0
3 years ago
Read 2 more answers
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