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ddd [48]
3 years ago
12

__________ is indigestible by animals because they lack __________, which is a __________.

Biology
1 answer:
alekssr [168]3 years ago
3 0

Cellulose is indigestible by animals because they lack the enzyme Cellulase.

Cellulose is the polysaccharide which is the main constituent of plant cell wall. It consists of chains of glucose monomers. Animals like human beings lack the enzyme Cellulase which is necessary for the digestion of cellulose.  

Hay and grasses are rich in cellulose and therefore, both are indigestible by human beings. Animals like cows and horses also do not possess the enzyme cellulase, but they harbor microbes which help in the digestion of cellulose.

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A protein called Costal was known to be part of this pathway, but for many years its function was unknown, and it was assumed to
Nana76 [90]

Answer:

A kinesin.

Explanation:

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Kinesins move along microtubule (MT) filaments, and are powered by the hydrolysis of adenosine triphosphate (ATP) which means kinesins are ATPases. Active movement of kinesins supports several cellular functions like mitosis, meiosis and transport of cellular cargo, such as in axonal transport.

7 0
3 years ago
Read 2 more answers
Research by social scientists suggests that it takes ____ percent of the population of a community, country, or the world to bri
Lady bird [3.3K]

Answer:

<em>The correct option is B) 5-10%</em>

Explanation:

We have seen and depicted various scenarios where we see how different changes arise and dominate the world. Social scientists suggest that as low as 5-10% people of a population are enough to bring about a change because people tend to copy what others are doing. Same goes for countries of the world. Each new popular technique which is learnt by one country tends to become popular and learnt by other countries. For example, the usage of a social app starts with a few members of a population using it and with time it becomes popular in the whole world.

7 0
4 years ago
Secondary lymphoid organs, such as the lymph nodes, spleen, and mucosa-associated lymphoid tissues, each have distinct features
Trava [24]

One major difference between these secondary lymphoid organs is the mechanism by which antigens or pathogens enter the organ.

Naive T cells can develop into effector and memory T cells, which remove the triggering antigen in peripheral tissues and produce protective immunity, with the help of secondary lymphoid tissues.

The spleen, which collects bloodborne antigens, the lymph nodes, which deal with antigens found in peripheral tissues, and the mucosa-associated, bronchial-associated, and gut-associated lymphoid tissues where antigens from epithelial surfaces are collected are examples of secondary lymphoid organs.

Therefore, One major difference between these secondary lymphoid organs is the mechanism by which antigens or pathogens enter the organ.

Learn more about secondary lymphoid organs here:

brainly.com/question/8904181

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6 0
2 years ago
What is the longest amount of time a scientist will investigate a scientific idea
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Answer:

There is no stated amount of time required

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There is no stated amount of time required to which a Scientist can investigate his idea.

The least amount of investigations he is to carry out is one in order to make sure his findings are reproducible. He can go on to carry out as many as eight more investigations just to ensure his findings are correct and universally accepted.

5 0
3 years ago
State three roles of light in photosynthes​
frozen [14]

Answer: converts light, oxygen and water into carbohdrates

Explanation: hope this helps..bella~

6 0
2 years ago
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