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katrin2010 [14]
3 years ago
12

Actin filaments have polarity. This means that the two ends can be identified due to structural differences. The plus end is the

end to which subunits are added more rapidly. True or False
Biology
1 answer:
Naily [24]3 years ago
4 0

Answer:

True

Explanation:

Actin is a globular protein which can polymerize to form long filaments called actin filaments. These filaments are abundant in muscle cells but are also found in other places.

While polymerizing, the new actin monomers always join the existing filament in the same orientation hence the filament becomes polar. It has a barbed end and a pointed end. Barbed end is also called plus end because monomers are added to this end five to ten times faster than the minus or pointed end. As a result, the filament overall grows in the plus end direction. Hence, the given information about actin filament is true.

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The correct sequence for aerobic metabolic breakdown of glucose is
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Answer:

a. glycolysis—preparatory reaction--cirtric acid cycle--electron transport system

Explanation:

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3 years ago
You have isolated a mutant strain of Bacillus subtilis (which you designate wimP) whose endospores can be killed by boiling wate
Ivanshal [37]

Answer:

The correct answer is option e. "higher water content".

Explanation:

One of the features that make endospores resistant to high heat in its low water content. The cortex of the endospore osmotically removes the water from the interior of the endospore, condition that protects them from heat and radiation. The wimP spores that can be killed by boiling water most likely have a higher water content in comparison to wild-type endospore. This explains why wimP spores are susceptible to be killed with the heat generated by boiling water.

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The Sun is just one of about 100 billion stars in the Milky Way, all ranging in size, distance from Earth, and color. Informatio
Elenna [48]

Answer:

B) As seen from Earth, the Sun is the brightest star on the chart, and Barnard's Star is the dimmest

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Among the given choices:

A) Of the stars listed, Proxima Centauri and Barnard's Star appear red because they burn the hottest.

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C) Small dwarf stars, like Proxima Centauri and Barnard's Star, do not burn as hot as medium dwarfs.

Proxima centauri being a small dwarf has a higher temperature than sun which is a medium dwarf.This shows that small dwarfs can burn hotter than medium dwarfs. So this option is not suitable.

D) Proxima Centauri and Barnard's Star are the closest because they are classified as "small dwarfs."

This is not correct choice because the data clearly states they are at greater distance.

So ,the correct choice is:

B) As seen from Earth, the Sun is the brightest star on the chart, and Barnard's Star is the dimmest.

Because: Sun is closest to the Earth and thus will appear the brightest as maximum light  from it Reaches the Earth. Barnard's star is Farthest so less light reaches the Earth from it and it appears the dimmest.

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Answer:

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