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ira [324]
3 years ago
13

Which of the following statements about enzymes is true?

Biology
1 answer:
inysia [295]3 years ago
6 0

Answer:

D) There are many different enzymes known, each catalyzing one or more specific chemical reactions.

Explanation: Neither of them...

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The area of the muscle fiber where the actin and myosin myofilaments overlap is
Varvara68 [4.7K]

Answer:

Sarcomere

Explanation:

The muscle fiber / myofibrils consist of 2 types of filaments - actin and myosin. The myosin filaments are thick filament whereas the actin filaments are the thin filament.

In addition to this, the muscles have A-band and I-bands. These bands give the muscles alternate light and dark colour band structure. In the A-band, myosin filaments are present, whereas in the I - band the actin filaments are found.

In I-band 2 Z-lines are located.  The area between the Z-lines is called sarcomere. In this sarcomere region both actin and myosin filaments present.

When muscles get contracted the length of the sarcomere shorten. The actin and myosin filaments overlap in this area. A cross-bridge form between them, with the help of filamentous protein titin.

8 0
3 years ago
The second part of a scientific name is unique to each A. order in its class. B. genus in its family. C. species in its genus. D
SashulF [63]
The answer is C. Species in its gender
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3 years ago
The image shows an aspect of human culture. which aspect is illustrated in the image?
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D. language is the answer

7 0
3 years ago
What is the atmosphere attracted by earth
slavikrds [6]
<h2>What is the atmosphere attracted by earth</h2>
<h3>                                         Let's begin.</h3>

Our Earths magnetic field may be to blame.


<em>Is there anything further to your question?</em>


Let me know!

3 0
3 years ago
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Which best illustrates a result of natural selection?
Yanka [14]

Answer: The correct answer is -

D) giraffes having increasingly longer necks over time.

Natural selection is an evolutionary mechanism that was proposed by Darwin.

According to this mechanism, organisms that are better capable of adapting to their changing environmental conditions, survive and increase their number through reproduction whereas other are eliminated from the population.

Example - Long neck of Giraffe, which is much elongated, lofty stature, that was beautifully adapted for browsing on the higher tree branches. This was an adaptation with slow and gradual change in the gene frequency as the lower vegetation was eaten by other animals. Due to this, giraffes had to search for other source (that was higher tree branches).

This is considered as a peculiar example of natural selection.

7 0
3 years ago
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