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elena-14-01-66 [18.8K]
3 years ago
13

How many amino acids must be obtained in the diet because they cannot be made by the body?

Biology
1 answer:
Ray Of Light [21]3 years ago
3 0

Answer:

Nine (9) amino acids must be obtained

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Is a ping pong ball a nonliving or living thing and why
Sergio [31]

Answer:

A ping pong ball is nonliving because it does not have a brain or living cells. It is plastic.

3 0
3 years ago
Which statement BEST explains Lamarck's theory of acquired characteristics as it relates to the neck length of giraffes?
Nuetrik [128]
LAMARCK's THEORY 
                                   
Jean Baptiste Lamarck (1744-1829) proposed a theory which was published in "<em>Philosophie Zoologique"</em> (1809).  This theory is simply known as Lamarckism. It has two main postulates:

1. Use and disuse of organs
2. Inheritance of acquired characters.

Example
             He explained his theory by giving the examples:
1. Neck length of Girrafes
2. Webbed toes of water birds, and
3. Wings of penguins

Explanation
               Lamarck explained that water birds use toe for swimming, with the passage of time webbed were developed in their toes. these features were then transferred to their offspring. 

Drawback
                Lamarck theory was based on natural observation. It did not explain the genetic basis of such characteristics.

3 0
3 years ago
What is a function of a protein marcomolecule?​
Furkat [3]

Answer:

Proteins are a class of macromolecules.

Explanation:

Proteins are a class of macromolecules, that can perform a diverse range of functions for the cell. They help in metabolism by providing structural support and by acting as enzymes, carriers or as hormones. The building blocks of proteins are amino acids.

6 0
3 years ago
Balance the equation, if necessary, for the reaction between zinc and acetic acid. Zn + HC2H3O2 → Zn(C2H3O2)2 + H2
Pie
Zn +2 HC2H3O2 - Zn(C2H3O2)2 + H2
4 0
3 years ago
Which human body systems are responsible for ensuring nutrients are properly absorbed and waste is eliminated from the body?
RideAnS [48]
They ensure they leave the system and they also ensure that people get the nutrients they need.
8 0
3 years ago
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