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Svetradugi [14.3K]
3 years ago
11

What structure allows gases to enter a leaf

Biology
1 answer:
DanielleElmas [232]3 years ago
7 0
Heyo. c:

The only way for gases to diffuse in and out of the leaf is through small openings on the underside of the leaf, the stomata.  These stomata can open and close according to the plant's needs.  The tissues of the leaf inbetween the epidermal cells, into which gases diffuse from the stomata, are called mesophyll.
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Will give brainliest plz help <br> Answer 14
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liquid- enzymes

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3 years ago
The extracellular matrix (ECM) was regarded decades ago as an uninteresting set of proteins and unusual carbohydrates that were
IrinaK [193]

Answer:

(a) E-cadherin growth suppressor genetic factor are significantly active space of analysis in growth and tumorigenesis. The calcium reliant connections between E-cadherin particles are essential for the creation and conservation of supporter connections in parts of animal tissue cell-cell interaction.

CAMs admire the cadherin glycoproteins ordinarily perform because the adhesive that grips cells along and performance as necessary intermediaries of cell to cell connections. E-cadherins, on the superficial of all animal tissue cells, are joined to the simple protein bodily structure complete connections with catenin’s within the protoplasm

(b) scleroprotein synthesis is exclusive assumed its closing gathering phase. justify this declaration. The last part originates from the establishment of precise amino acids admire Glycine, aminoalkanoic acid and Hydroxproline. scleroprotein additionally has 2 unusual spinoff amino acids that don't seem to be straight introduced throughout translation.

Collagen consists of three handcuffs. The manacles are looped along to create a multiple helix. the method of scleroprotein synthesis happens principally within the cells of fibroblasts that are specialised cells with the most perform of manufacturing collagen and stroma. scleroprotein mixture happens each intracellularly and extracellularly.

 

c. Laminin could be a substance of integrin’s receptors. it's AN RGD theme that dilemmas to RGD compulsory sphere on receptor. So as to investigate whether or not the somatic cell composition is because of compulsory of laminin to integrin’s, ab initio it's to be verified, that integrin’s are profusely articulated on the somatic cell semipermeable membrane. This may be achieved mistreatment technique examination via antibodies or by template RNA appearance by RT-PCR.

The appearance of those integrin’s may be inhibited mistreatment RNAi by siRNA method. The siRNA can destroy the template RNA for the integrin because it contains a balancing arrangement to the mRNA. The damage of template RNA can source decreased macromolecule appearance. The cells will then be coated on the 3 glazed plates makeshift, laminin. If the cells provide spherical cells, formerly the somatic cell composition are going to be because of integrin-laminin collaboration. The cells may be gathered and testes for somatic cell indicators that designated distinction to neuronal composition. If no diversity indicators are specificed in laminin covered plates with distorted cells as likened to the management cells that rapid integrin’s, then it's laminin integrin communication that's chargeable for the somatic cell composition see, simple protein thread designs can even be deliberate on top of things and distorted cells produce on laminin covered plates by technique.

Another technique which will be utilized is to pelt the philosophy plate with changed laminin macromolecule that absences the RGD themes. The somatic cell cell appearances will then be plated and refined on the management laminin and changed laminin missing RFD themes. If the somatic cell composition isn't ascertained, then it may be over that laminin-integrin connections are concerned in growth of the somatic cell composition.

(d) Glycosaminoglycans (GAGs) are necessary electronic warfare parts, as a result of they're extremely charged polymers that powerfully dilemma aquatic and ions, making state in electronic warfare areas, and since they dilemma and confiscate physiologically necessary proteins.

Proteoglycans facilitate control trails that management vegetative cell fate, and so represent a wonderful tool to control these trails. Although their position, there's a scarcity of knowledge linking glycosaminoglycan construction inside proteoglycans with vegetative cell variation.

7 0
2 years ago
In 1928, sir alexander fleming was studying staphylococcus bacteria growing in culture dishes. he noticed that a mold called pen
Olenka [21]

A mold was developing in some of the culture dishes used by Sir Alexander Fleming and was eliminating some of the bacterial population. The hypothesis is that the mold was generating a chemical, which was toxic to the bacteria in the dishes and killed them.

The hypothesis was examined by separating the Penicillium and administering it into the solution of nutrient broth. After the growth of Penicillium it was withdrawn from the broth. The broth was then eventually supplemented to the bacteria and the bacteria died. Thus, it can be concluded that the hypothesis is supported.


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3 years ago
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The branches of the bronchial tree lead to different lobes in the lungs.
Alika [10]

Answer:

True

Explanation:

It is divided into three lobes and each lobe is supplied by one of the secondary bronchi. The left lung is longer and narrower than the right lung.

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3 years ago
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What is the definition of crossing over / recommendation?
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Answer: It is exchanging genetic material between two paired chromosomes

Explanation:

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