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12345 [234]
3 years ago
14

Microtubules and microfilaments are made from proteins that are shaped like _____.

Biology
2 answers:
Alex3 years ago
8 0
Hello there!

<span> Microtubules and microfilaments are made from proteins that are shaped like _____.

Answer: Hollow tubes

Hope this helps :)
</span>
natta225 [31]3 years ago
5 0

The right answer is balls (globules).

Microtubules are constituent fibers of the cytoskeleton, as are actin microfilaments and intermediate filaments.

The microtubules are formed of tubulin dimers (which have a spherical shape) each consisting of two subunits, tubulin α and tubulin β, linked by non-covalent bonds.

Actin, the main component of microfilaments, is a bi-globular protein that plays an important role in architecture and cell movement. It is present in all the cells of the body (ubiquitous protein), and especially in the muscular cells.

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3 years ago
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The axial skeleton provides an extensive surface area for the attachment of muscles that __________.
garik1379 [7]

The question is incomplete as it does not have the options which are:

  • Adjusts the positions of the head, the neck, and the trunk
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Answer:

All of the above

Explanation:

The axial skeleton is the group of bones which forms the centre of the skeletal system. The central portion of the skeletal system includes bones of the skull, bones associated with the skull, the thorax, and the vertebral column (spinal cord).

There are 80 axial skeletal bones out of which 22 bones are present in the skull, 7 attached to the skull, 25 in a thoracic cage and 26 in the vertebral column.

The axial skeleton help maintains the position of the appendicular skeleton, maintain the posture of the body by maintaining the posture of the neck, head and trunk and also help in the respiratory movements.

Thus, all of the above is correct.

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2 years ago
A phenotypically normal couple has a colorblind klinefelter son (xxy). In which parent and at what meiotic stage must the non-di
ad-work [718]

Answer;

D. Meiosis ii of mother

Explanation;

-The non-disjunction occurs in the meiosis II of the mother. This non-disjunction occurs when the two sister chromatids X and X fails to separate during meiosis II and produces an egg having two X chromosomes.

-Klinefelter syndrome is a condition that occurs in males when they have an extra X chromosome. The syndrome is not inherited, but usually occurs as a random event during the formation of reproductive cells (eggs and sperm) that results in the presence of one extra copy of the X chromosome in each cell (47,XXY).

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Answer:

High energy electron carrier used to transport electrons generated in Glycolysis and Krebs Cycle to the Electron Transport Chain.

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<span>If factors are only rounded up, then the estimate is an overestimate. If factors are only rounded down, then the estimate is an underestimate. When some factors are rounded up and some are rounded down, it is harder to tell whether the estimate is an overestimate or an underestimate.</span>
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3 years ago
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