Carbon dioxide is used by plants for why

Biology

2 answers:

mel-nik [20]3 years ago

7 0

Answer: they use carbon dioxide to help them grow.

Explanation:

dlinn [17]3 years ago

4 0

Answer:

In a process called “photosynthesis,” plants use the energy in sunlight to convert CO2 and water to sugar and oxygen. The plants use the sugar for food—food that we use, too, when we eat plants or animals that have eaten plants — and they release the oxygen into the atmosphere.

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Sunflowers belong to which of the following kingdoms?

Tresset [83]

The answer is A. Plantae

Plantae is a multi cellular organisms which produce their food from photosynthesis , Sunflower is one of them. They're also known as metaphyta,

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3 years ago

Julian is late to class and sees a list on the board:

Mama L [17]

Its theories hope your doing good on your quiz

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When magma or melt solidifies it formsrocks. If a pre-existing rock is exposed to extreme heat or pressure its physical properti

Naily [24]

Answer:

When magma solidifies it forms igneous rocks. If a pre-existing rock is exposed to extreme heat or pressure its physical properties can change, forming a metamorphic rock. Rocks derived from the weathered grains of other pre-existing rocks through lithification are sedimentary rocks.

Explanation:

The naturally occurring structure that is formed on the Earth's crust and is composed of a single mineral or an aggregate of several minerals is known as a rock. The classification of rocks on the basis of their formation is igneous rocks, sedimentary rocks, and metamorphic rocks.

Igneous rocks: They are formed by the slow or rapid cooling and then solidification of molten magma on the Earth's crust or seabed. The two types of igneous rocks are intrusive igneous rocks, which contain large crystals formed by the slow cooling of magma below the Earth's surface (granite, gabbro, diorite, pegmatite, etc) and extrusive igneous rocks, which contain small crystals formed by the fast cooling of magma that reached on the Earth's surface (basalt, obsidian, pumice, tuff, etc).

Sedimentary rocks: They are formed by the accumulation and lithification (compaction and cementation of accumulated sediments) of sediments created from the weathering of existing rocks or fragments of minerals and organisms over time. The different types of sedimentary rocks are clastic sedimentary rocks, which are formed from the fragments of other weathering rocks (conglomerate, sandstone, mudstone, siltstone, etc), chemical sedimentary rocks, formed from the dissolved materials precipitated from solution (rock salt, oolitic limestone, gypsum, etc) and organic sedimentary rocks, created from the accumulation of debris formed from plants or animals (limestones, coal, dolomites, etc).

Metamorphic rocks: They are transformed rocks formed from the existing rocks that are subjected to large pressures (regional or dynamic metamorphism) and temperatures (contact or thermal metamorphism). The basic types of metamorphic rocks are foliated metamorphic rocks that have a layered or banded appearance (gneiss, schist, etc) and non-foliated metamorphic rocks that do not have a layered (quartzite, hornfels, marble, etc).

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3 years ago

What specific event triggers the uncovering of the myosin binding site on actin?

Bess [88]

Striated muscles contain repeating sarcomeres of overlapping arrays of long, thin actin and thicker myosin filaments. Myosin filaments contains the myosin heads, which are enzymes that can bind to actin, split and make use of the energy from ATP. When muscle contraction starts, myosin heads bind to actin, change their configuration on actin, liberating the products of ATP hydrolysis and causing slide of the actin and myosin filaments. The action of the proteins troponin and tropomyosin on the actin filaments regulates vertebrae striated muscle contraction. The release of calcium ions from the sarcoplasmic reticulum is triggered by the nervous stimulation which causes depolarization of muscle membrane. Calcium ions bind to troponin and thus cause or allow the tropomyosin strands on the actin filament to move so that the part of the actin surface where myosin heads need to bind is uncovered. Contraction then occurs and only stops when the sarcoplasmic reticulum pumps calcium out of the muscle interior.

So basically, what triggers the uncovering of the myosin binding site on actin is the calcium ions binding to troponin and changing configuration.

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4 years ago

T-cells are a type of immune cell system that recognizes pathogens in the body.

Advocard [28]

The statement is true that T-cells are a type of immune cell system that recognizes pathogens in the body.

T-cells are the lymphocytes that are involved in providing acquired immunity to the body. They can recognize the pathogens presented by the antigen presenting cells. There are two types of t cells: helper T cells and Cytotoxic T cells.

Immune cells are the cells of the immune system that are involved in protecting the body from infection, allergies and foreign pathogens. There are several immune cells that perform several functions. The example of such cells are: phagocytes, lymphocytes, dendritic cells, etc.

To know more about T cells, here

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