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salantis [7]
3 years ago
7

What holds the base pairs of DNA together? A. Covalent bonding B. Double helix C. Ionic bonding D. Hydrogen bonding

Biology
1 answer:
Sholpan [36]3 years ago
3 0
The answer would be D. Hydrogen bonding. 
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Igneous rocks turn into sediments through the process of ______.
dalvyx [7]
B.) crystallization. Igneous rocks turn into sediments through the process of crystallization.
6 0
3 years ago
What is dna ? and what is the purpose of dna
liberstina [14]

Answer:

Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions for the development and function of living things. All known cellular life and some viruses contain DNA. The main role of DNA in the cell is the long-term storage of information.

Explanation:

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8 0
3 years ago
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For energy, a plant breaks apart some of the small sugars it builds. What does the plant do with the rest of its small sugars?
balandron [24]

Answer:

The plant stores them as starch

Explanation:

A typical plant synthesizes sugars from photosynthesis by using water and carbon dioxide.

6CO_2 + 6H_20 + energy --> C_6H_1_2O_6 + 6O_2

Parts of the sugar synthesized via photosynthesis is used to generate energy during respiration. The energy generated is useful for other metabolic processes in the plant's body.

C_6H_1_2O_6 + 6O_2 --> 6CO_2 + 6H_20 + energy

<em>The remaining sugar is utilized in the synthesis of starch and stored in the various tissues of the plant.</em>

6 0
3 years ago
In photosynthesis, how does the movement of electrons along the electron transport chain affect hydrogen ions (h+)? how does thi
lukranit [14]
As electrons move along the chain, hydrogen ion are pumped from the stroma of the chloroplast into thylakoid lumen. these leads to creation of proton gradient in thylakoid lumen with the potential energy that will be used to synthesize ATP by enzyme ATPase in the process referred to as rotational catalysis. both chloroplast and mitochondria use electron transport chain to pump protons across the membrane and both enzyme ATPase to produce ATP using proton gradient created in the process of transport of hydrogen ions. the main existing between the electron transport chains of chloroplast and mitochondria is the initial source of energy. chloroplasts obtain their energy from sunlight whereas mitochondria obtain theirs from organic molecules.   
3 0
3 years ago
What would happen if our lungs where made up of only one big alveoli?
Dimas [21]

The process of respiration system would not function well if the lungs was made up of only one big alveoli.

<u>Explanation:</u>

The main role of alveoli is to help the lungs to breath, for ventilation, diffusion and perfusion. The process of respiration system would not function well if the lungs was made up of only one big alveoli.

Alveoli are tiny to help the flow of oxygen and carbon dioxide, it helps the oxygen flow into the lungs and remove the carbon dioxide. If the alveoli is just one and big, then it would be hard to flow the oxygen through lungs and remove the carbon dioxide.

Therefore, it is good to have many tiny alveoli than one big one or the rib cage  that protect the lungs could go through some damages.

7 0
3 years ago
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