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
Sphinxa [80]
4 years ago
8

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

a tree E. evaporation of rubbing alcohol
Biology
2 answers:
katen-ka-za [31]4 years ago
8 0

Answer:

C. When we digest food there are tons of chemical reactions occurring in the process, they would have to break down the food which is a chemical reaction.

ad-work [718]4 years ago
7 0

Answer:

C. digestion of food

Explanation:

in a chemical reaction the substance changes composition and the reaction is mostly irreversible.

option C: digestion of food is a chemical reaction which changes the composition of the food we eat. Enzymes and other substances react with the food and turn it into soluble substances which the body can easily use.

option A: breaking glass does not change the composition of the glass plane. Its a physical reaction

option B: freezing water changes the state of water but the composition is still     the same, its a physical reaction as well.

option D: cutting a tree does not change the composition of the wood. This, too, is a physical reaction.

option E: when a liquid evaporates it changes into a gas, which is a change in the state of matter (just like water into ice), this also does not change the composition of alcohol.

You might be interested in
Shot in the head, the victim died instantly because the bullet entered the _______, the portion of the brain that regulates brea
Kisachek [45]
<span>Shot in the head, the victim died instantly because the bullet entered the MEDULLA, the portion of the hindbrain that regulates breathing</span>
7 0
3 years ago
What Is Not Found In Viruses
meriva
All viruses have a <span>capsid, that contains there DNA or RNA, never both. </span>
7 0
3 years ago
Which of the following statements about the nuclear envelope is false?
Evgesh-ka [11]

Answer:

b) The nuclear envelope is continuous with the Golgi apparatus.

Explanation:

The nuclear envelope is a nuclear membrane composed of two lipid bilayers: inner and outer membrane and perinuclear space between them. Its outer membrane is continuous with the endoplasmic reticulum. Nuclear pores that are part of this envelope allow the movement of molecules in and from the nucleus (e.g. mRNA formed during transcription should be transported into cytosol through the pores).

3 0
4 years ago
Both lipids and carbohydrates are important in animal cells because both do what
elena55 [62]
Both lipids and carbohydrates are important in animal cells because store energy. The main biological functions of lipids include storing energy, signaling, and acting as structural components of cell membranes. Carbohydrates on the other hand have six major functions in the body; including providing energy and regulation of blood glucose, sparing the use of proteins for energy, breakdown of fatty acids and preventing ketosis. 
7 0
4 years ago
Why do you think doctors recommend that women avoid most medications and alcohol during pregnancy
vagabundo [1.1K]

Answer;

Doctors recommend that women avoid most medications and alcohol during pregnancy because these substances may cross the placenta and harm the embryo or fetus.

Explanation;

The doctors recommend that women avoid most medications and alcohol during pregnancy.

Alcohol during pregnancy can cause fetal alcohol syndrome which is a serious condition that can affect a child throughout life.

Some drugs, substances or medications may be harmful during pregnancy, depending on the amount and frequency of use.

4 0
4 years ago
Read 2 more answers
Other questions:
  • What are your thoughts on human-made protective structures and beach-nourishment projects? Are they worth the time, money, and e
    12·1 answer
  • Foods that allow microorganisms to grow are called parasites.*
    13·1 answer
  • Which characteristic contributes MOST to the survival of the different birds on the islands?
    5·1 answer
  • In the small intestines, a process called ____________ aids in mixing. During this process the contents ____________ move along
    8·1 answer
  • How does a savanna differ a grassland?
    9·1 answer
  • The apples at the local supermarket have been genetically engineered to resist warmer temperatures than they did before. What do
    10·2 answers
  • Teresa was told by her doctor that her unborn baby has XY chromosomes. What does this
    7·1 answer
  • Describe the importance of a hypothesis in scientific inquiry.
    6·1 answer
  • Which structure of human hands makes them especially useful for gripping things?
    6·1 answer
  • The secretion of aldosterone is directly stimulated by _______. The secretion of aldosterone is directly stimulated by _______.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!