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AnnZ [28]
3 years ago
15

Define food and explain its importance. Solution for class 7

Biology
2 answers:
garik1379 [7]3 years ago
8 0
A food is something that provides nutrients. Nutrients are substances that provide: energy for activity, growth, and all functions of the body such as breathing, digesting food, and keeping warm; materials for the growth and repair of the body, and for keeping the immune system healthy.


Hope it helps
never [62]3 years ago
3 0

Answer:

Food, substance consisting essentially of protein, carbohydrate, fat, and other nutrients used in the body of an organism to sustain growth and vital processes and to furnish energy. The absorption and utilization of food by the body is fundamental to nutrition and is facilitated by digestion.

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What tool can we use to predict the outcome of a genetic cross?
kirill115 [55]
Answer: Punnett Square

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A punnett square is used to display the possible outcomes of a genetic cross. The parents' alleles are written across the top and the side, and the possible genotypes are written in the boxes (see image).

4 0
3 years ago
a change in the nucleotide sequence of a gene can lead to a change in _______, which can lead to a change in in the amino acid s
skad [1K]

Answer:the messenger rna

Explanation:

A change in the DNA sequence of a gene leads to a change in the nucleotide sequence in the messenger RNA, which can lead to a change in the amino acid sequence of the resulting protein.

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A scientist isolated the Hepatitis B surface protein gene and introduced it into the DNA of a banana plant. The scientist tested
omeli [17]

Answer:

A. The gene for surface protein was transcribed and translated.

Explanation:

Because all living organisms use the same genetic code, it is possible to express genes from one organism in the other. In this case, the DNA sequence that corresponds to the hepatitis B surface protein gene has been inserted into the banana, and the protein is expressed.

For the protein to be expressed, the gene must have been successfully transcribed into an mRNA by the banana plant machinery. This mRNA has then been translated into a protein that means the hepatitis B surface protein is now present in the cell.

4 0
3 years ago
Fatigue that occurs in response to extended submaximal exertion is usually due to ________ whereas fatigue to a short duration o
e-lub [12.9K]
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8 0
4 years ago
Who discovered the monomers of nucleic acids?
Kazeer [188]

Answer:

Phoebus Levene.

Explanation:

Two types of nucleic acids are DNA and RNA. The monomers of mucleic acid contains the pentose sugar, nitrogenous bases and the phosphate group attached with the bases.

Friedrich Miescher was the first scientists who discovered the nucleic acids. He identified the nucleic acids from the bandage that contains the nuclei of white blood cells. The new compounds discovered is known as nucleic acid. But the monomers of the nucleic acids was first explained by Phoebus Levene. Different forms of nucleic acid was also postulated by Phoebus Levene.

Thus, the answer is Phoebus Levene.

4 0
3 years ago
Read 2 more answers
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