1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Nadya [2.5K]
3 years ago
15

Which of the following is a chemical reaction? A.breaking a glass pane B.freezing water B.digestion of food C.cutting down a tre

e D.evaporation of rubbing alcohol
Biology
2 answers:
Illusion [34]3 years ago
9 0

The correct answer is option B, that is, digestion of food.

Digestion of food in the body is a decomposition reaction, it is a kind of chemical reaction in which single compound dissociates into two or more basic components. In the process of digestion, proteins, carbohydrates, and fats dissociate to basic constituents, which provide energy to function.  

Digestion of food is regarded as chemical change as different chemical reactions occur at the time of food digestion.  


joja [24]3 years ago
3 0
The answers A. C. D. are all physical reactions 

The answer is B. Digestion of food 

When food is digested it is chemically broken down 

Hope this help! 
You might be interested in
What do you think would happen to a protein if it were a different shape?
Fofino [41]

Answer:

Well protines come in diffrent shapes, for there diffrent functions. The first level, or primary structure, is the linear sequence of amino acids that creates the peptide chain. In the secondary structure, hydrogen bonding between different amino acids creates a three-dimensional geometry like an alpha helix or pleated sheet. An alpha helix is simply a spiral or coiled molecule, whereas a pleated sheet looks like a ribbon with regular peaks and valleys as part of the fabric. The tertiary structure describes the overall shape of the protein. Most tertiary structures are either globular or fibrous. Generally, nonstructural proteins such as enzymes are globular, which means they look spherical. The enzyme amylase is a good example of a globular protein. Structural proteins are typically long and thin, and hence the name, fibrous. Quaternary structures describe the protein's appearance when a protein is composed of two or more polypeptide chains. Often the polypeptide chains will hydrogen bond with each other in unique patterns to create the desired protein configuration.

some hormones are proteins; and some proteins are involved with digestion, respiration, reproduction, and even normal vision, just to mention a few.

f the three-dimensional structure of the protein is altered because of a change in the structure of the amino acids, the protein becomes denatured and does not perform its function as expected.

Explanation:

6 0
3 years ago
Read 2 more answers
Natural selection will allow an organism to live long enough to reproduce, thus passing down the successful trait.
hichkok12 [17]
A.True it gives benefits to creature it can survive reproduce and pass down traits they can evolve and become more and more sucessful
3 0
3 years ago
why is climate change a serious threat to the least developed countries practicing agriculture as their main occupation mountain
Hitman42 [59]

Answer:

Increase in sea level on the low lying countries which leads to degradation and salinification thereby making the soil non-arable. Meanwhile on the mountain regions, melting glaciers caused by rain falling on snow leads to mountain floods, avalanches and extreme rockslide and thereby disrupting agricultural produce and wildlife.

Explanation:

5 0
3 years ago
Why do hot spring in Yellowstone national park have wooden walkways built around them
Korolek [52]

Answer:

You can imagine what would happen if 10,000 people a week were walking over these fragile hot-spring deposits. “The boardwalks are an amazing piece of construction that's a useful tool for resource protection, and visitor enjoyment and safety.

hope it helps you

7 0
3 years ago
What carries materials from one location in the cell to another, or to the cell membrane.
nydimaria [60]

Endoplasmic Reticulum is the network of passageways functions to carry materials from one part of the cell to the other.

3 0
3 years ago
Other questions:
  • f a scientist is observing biotic and abiotic factors, which of the following level of organism must she be studying? A. A popul
    7·1 answer
  • What range of ratios could indicate that a gene was not expressed in cancerous tissue, but was expressed in healthy tissue?
    6·1 answer
  • This is a component of the cell that performs a specific function
    8·1 answer
  • What organs does the pelvic region hold
    9·1 answer
  • What is an example of cell wall and also a non example
    5·1 answer
  • Which of these cell structures is used to transport chromosomes across a cell during cell division?
    5·1 answer
  • Select all the types of transport that DO NOT require energy *
    6·2 answers
  • Fact, fiction, or opinion.
    7·2 answers
  • Do you think that carbon emissions from humans should be regulated? Why or Why not? Give at least five reasons to support your a
    5·1 answer
  • A table with four organisms and their primary role in an ecosystem is shown.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!