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AVprozaik [17]
3 years ago
7

What is the first step in dna replication

Biology
2 answers:
wlad13 [49]3 years ago
8 0
The first step to DNA replication is  to unzip the double matrix which also means that they will break the double matrix.
vazorg [7]3 years ago
8 0
The first step is the separation of the two DNA strands that make up the helix that is to be copied.
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I NEED THIS QUICK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Pavel [41]

Answer:

PGA not sure But Ithink that the correct answer

Explanation:

3 0
3 years ago
Shell-builders use calcium carbonate molecules (CaCO3) to build their shells. Which of the choices above could be a source for t
Fudgin [204]

Answer:

The question is incomplete, the correct question is;

Shell-builders use calcium carbonate molecules (CaCO3) to build their shells. Which of the following choices could be a source for the carbon atoms in the calcium carbonate (CaCO3) molecules?

respiration by organisms such as plants, animals and microbes

burning coal

calcium ions

car exhaust

wildfires

Answer is all of the above options except calcium ions.

The source for the carbon atoms in the calcium carbonate (CaCO3) molecules include respiration by organisms such as plants, animals and microbes , burning coal , car exhaust  and wildfires.

Explanation:

Shell-builders (coral, oysters, lobsters, sea urchins, phytoplankton) utilize calcium carbonate molecules (CaCO3) to build their shells. The respiration process by organisms such as plants, animals and microbes, burning of fossil fuels, vehicle exhaust, wild fire etc produces carbon dioxide (CO2) and release it into the atmosphere. Oceans absorb carbon dioxide in the air by diffusing and dissolving it into the surface water. The amount of CO2 that dissolved in the water depends on concentrations of CO2, temperature of the water, wind, etc.

Phytoplanktons (microscopic, one-celled organisms) also bring carbon into the ocean from the air through photosynthesis, where they convert the carbon dioxide and water into glucose and other carbon compounds. These carbon compounds are consumed by the marine organisms and some carbon eventually ends up in deep seafloor sediments. The other processes which involved in the transfer of carbon from the air into deep seafloor sediments include photosynthesis , decomposition , waste products, etc.

The CO2 dissolved in the ocean combines with water molecules to produce carbonate (CO3-) ions, which then combine with calcium ions in the seawater to form calcium carbonate (CaCO3). This calcium carbonate is used by shell building organisms to build their shells, plates, inner skeletons etc.

8 0
3 years ago
Where do trees get nutrients to grow
emmainna [20.7K]

Answer:

Photosynthesis a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities

they need sun water and CO2

Explanation:

4 0
2 years ago
At 10 a.m. on June 12, two joggers discover a body along a running path in a park. The body is 20 feet from a tree beside the pa
WITCHER [35]

Answer:

the weather conditions

Explanation:

if the body is out in the sun then yes it will look like a grey cheesy so it will be the last one

8 0
3 years ago
Read 2 more answers
Describe the relationship between fungal structure
stepladder [879]
Fungi are more related to animals than plants because they are not photosynthetic. They can be harmful because they do not respond to traditional antibiotic but they are also commercially beneficial especially in the food industry that uses yeast like baking, brewing and cheese and wine making. The pileus is the term given to the cap-like structure of the fungi. It supports the spore-bearing surface which is the hymenium which consists of lamellae, tube or teeth on the underside of the pileus. Annulus is the ring-like structure found in the stipes of some species of mushroom and is a remnant of the partial veil. Stipe is the stem or stalk of the mushroom that supports the cap of the mushroom. Volva is the caplike structure found at the base of the fungi which is a remnant of the universal veil. Hypha is the long, branching, filamentous structure of a fungus that is the main mode of vegetative growth. Each fungus has a vast number of these hyphae which are intertwined to make a tangled web called mycelium. Through mycelium, fungus absorb nutrients from its environment. 
6 0
3 years ago
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