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Naddika [18.5K]
3 years ago
5

What contains instructions to cells about how to form a heart ?

Biology
2 answers:
Lelu [443]3 years ago
7 0

Answer: DNA

Explanation: The Deoxyribonucleic acid contains information that instructs the cells to combine together to form a heart.

The basic structural and functional unit of life is cell. The cell division allows the cell to divide and form tissue and then from tissues to organ.

The instruction for cell division is generated by DNA. So, the instruction for cells to form heart will be given by DNA.

madam [21]3 years ago
6 0
The deoxyribonucleic acid (DNA)
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What two layers of the earth are either partially or totally melted
Lostsunrise [7]

Answer:

Lithosphere and asthenosphere

Explanation:

The lithosphere is composed of both the crust and the portion of the upper mantle that behaves as a brittle, rigid solid. The asthenosphere is partially molten upper mantle material that behaves plastically and can flow.

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3 years ago
Ionic compounds form ions in water.<br> True?<br> False?
krok68 [10]

Answer:

True

Explanation:

For example, NaCl - sodium chloride, when  dissolved in water forms Na+ and Cl- ions.

4 0
3 years ago
Identify the process that is necessary for sexual reproduction. Also, explain why it is necessary and identify how this process
Olenka [21]

Answer:

The correct answer would be meiosis.

In diploid organisms, meiosis is the process that results in the formation of four haploid daughter cells from single diploid parent cell. Each of the daughter cell contains half the number of chromosomes present in parent cell.

It results in the formation of haploid gametes (sperm in males and eggs in females) which is essential in the process of sexual reproduction.

The fusion of gametes results in the formation of diploid zygote that is, maintains the diploid nature of the organism.

Hence, in absence of meiotic division the chromosomal number would keep on doubling after each generation.

In addition, crossing over (exchange of genetic material between non-sister chromatids) also takes in the prophase-I of meiosis I. It increases the genetic variation within organisms of the species. It may add survival adaptations to the population.

5 0
3 years ago
Read 2 more answers
What is asteroids..........................​
son4ous [18]

Answer:

A small rocky body orbiting the sun.

Explanation:

Large numbers of these, ranging in size from nearly 600 miles (1,000 km) across (Ceres) to dust particles, are found (as the asteroid belt ) especially between the orbits of Mars and Jupiter, though some have more eccentric orbits, and a few pass close to the earth or enter the atmosphere as meteors.

8 0
3 years ago
2.In the model below what is most likely the reason for placing the farmland upstream from the factories?
FrozenT [24]

Answer:

It is easier to send the raw materials to the factories to become finished goods.

Explanation:

I don't know if this was multiple choice, but you would put the farmland upstream from the factories so that the crops and other raw materials could easily go down to the factories to be finished. I hope this helped :)

8 0
2 years ago
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