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adell [148]
3 years ago
13

Why do we breathe oxygen? how do we get energy out of our food?

Biology
2 answers:
Viktor [21]3 years ago
4 0
Out body breaks down food with enzymes and the glucose produced is burned to form energy measured in calories.

we breathe in oxygen to help our muscles function 
lapo4ka [179]3 years ago
3 0
We breath oxygen because it is needed to burn fuel [ sugars and fatty acids] in our cells to produce energy. Oxygen is also brought into the lungs via breathing; where it is transported by red blood cells to the entire body to be used to produce energy. The food we eat gives us protein, sugars, vitamins etc. for energy 
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In pea plants, the allele for inflated pod seed, I, is dominant over the allele for constricted pod seed, i. The Punnett square
zubka84 [21]

Answer:

<em>The offspring which carries the allele II will be homozygous dominant.</em>

Explanation:

A dominant trait can be described as a trait which masks the effect of a recessive trait. A recessive trait can be described as a trait which gets masked by the dominant trait.

A homozygous dominant trait occurs when both the alleles for the gen are dominant. A heterozygous dominant trait occurs when one allele is dominant and the other is recessive for the trait.  

Hence, a homozygous dominant trait will carry the alleles II.

8 0
3 years ago
The mass of an electron is
vodka [1.7K]

Answer:

not significant to the overall mass of the atom

Explanation:

The mass number of an atom is the combination of the mass of the protons and neutrons.  Electrons are not included because their mass are so insignificant that is doesn't change the total mass much, therefore they are left out. The mass of an electron is about 1,830 times smaller than protons and neutrons.

4 0
3 years ago
Sharps are medium-length needles with round eyes. <br> a. True <br> b. False
Elodia [21]
TRUE, with also sharp points
8 0
3 years ago
1. Identify the steps of cell division in a prokaryotic cell.
iris [78.8K]

Answer:

1. Step 1: DNA Replication. Just before the cell divides, its DNA is copied in a process called DNA replication. ...

Step 2: Chromosome Segregation. The two chromosomes segregate, or separate, and move to opposite ends (known as "poles") of the cell. ...

Step 3: Separation.

2. Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. These phases occur in strict sequential order, and cytokinesis - the process of dividing the cell contents to make two new cells - starts in anaphase or telophase. Stages of mitosis: prophase, metaphase, anaphase, telophase.

4 0
3 years ago
Human activity can be very disruptive to an
leonid [27]
Secondary succession i think! i’m not sure though.

secondary succession: animals recolonize after a disturbance such as a fire/destruction of their habitat (deforestation)

primary succession: devastation begins in a lifeless area.

in this case, the forest had living organisms, therefore, i don’t think it can be primary.
4 0
3 years ago
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