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Nana76 [90]
2 years ago
11

What are a type of filament system in eukaryotes that form non-polar paired filaments and bind GTP?

Biology
1 answer:
irga5000 [103]2 years ago
7 0
Microtubules.

These filaments consist of tubulin dimers (consisting of one a-tubulin and one B-tubulin subunit) When GTP binds to the B subunit of the dimer it changes the conformation of the dimer and allows for polymerization to form a microtubule filament. The B-subunit will eventually hydrolyze the GTP to GDP, at which point the conformation of the dimer will change again such that the dimers will depolymerize and the microtubule will dissolve into the cytoplasm.
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Sherry has addison's disease so her ability to produce cortisol is reduced. how does her hypothalamus respond?
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When an individual's cortisol levels are low, such as in the case of people with Addison's disease, the hypothalamus region of the brain releases corticotrophin-releasing hormones. This causes the pituitary gland to also secrete another hormone called, adenocortocotropic hormone into the bloodstream. <span>When the adrenal glands detect these hormones, they secrete cortisol, causing blood levels of cortisol to rise.</span>
6 0
3 years ago
1. Dissolution and precipitation of _______ are the main processes that form limestone caves. A. calcite
prohojiy [21]
A. calcite totally sure
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The plant life cycle has mitosis occurring in spores, produced by meiosis, that germinate into the gametophyte phase.
olganol [36]
<h2>Answer:</h2>

The statement about the plant cycle is true.

<h2>Explanation:</h2>

All plants experience an actual existence burn that takes them through both haploid and diploid ages. The multicellular diploid structure of plant is known as the sporophyte that produces spores through meiotic (agamic) division. The multicellular haploid structure of plant is known as the gametophyte, which is shaped from spore and offer ascent to haploid gametes.  

The change between these haploid stage and diploid stage that happens in plants is known as the generations alternation. The manner by which the generations alternation happens in plants relies upon the kind of plant. In bryophytes (greeneries and liverworts), the predominant age is haploid, so the gametophyte includes what we consider as the primary plant.

The inverse is valid for tracheophytes (vascular plants), in which the diploid age is predominant and the sporophyte involves the primary plant.

4 0
3 years ago
T/F The protein found in large amounts in the outermost layer of epidermal cells is collagen.
7nadin3 [17]
False, it's keratin. mate
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Read 2 more answers
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Physical development

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