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Studentka2010 [4]
3 years ago
10

How does oxygen reach the lungs from the air?​

Biology
1 answer:
vladimir1956 [14]3 years ago
4 0

Answer:

When you breathe in (inhale), air containing oxygen enters your windpipe, passes through the bronchi and eventually reaches the air sacs. These air sacs, called alveoli, are responsible for gas exchange.

Explanation:

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A molecule has been isolated from a cell. The molecule is found to be in a ring shape made up of carbon, hydrogen, and oxygen at
Pani-rosa [81]

Answer:

C,D,,B) The molecule is likely a sugar.

Explanation:

The molecule is(hexose) a glucose.It  is a sugar formed as  the products of photosynthesis.It is also a carbohydrate because all sugars are CHO,although not all CHO are sugars.It is the smallest  components of cell membranes.Protein are the largest components based on molecular mass,while phospholipids are the largest components.

The three major elements in the molecule are Carbon.Hydrogen  and Oxygen. The general formula of carbohydrate is Cx(H2O)y. The ratio of hydrogen to oxygen is 2:1.Thus the hydrate refers to the water content.

Sugar as monosaccharide glucose is the simplest form with general molecular  formula of (CH2O)n  where may be n = 3 to 6. In glucose n=6,and it is called Hexose. Therefore the  molecule of glucose is C6H1206 in ratio 1:2:1.

The arrangement of glucose could be in straight chain or ring structure,Hexose sugar of glucose  and pentose can be ring structure.They have C-H chain length long enough to form ring structure.

In  glucose this can either be alpha or beta ring structure. Therefore the molecule is either the alpha or beta-glucose ring.

8 0
3 years ago
3. In pea plants, inflated pods are dominant to constricted pods.
qwelly [4]

Answer:

Let's consider the alleles for a true- breeding inflated pod to be PP. Let's consider the alleles for the constricted pod to be pp. The punnet square for this can be shown as:

        p       p

P    Pp      Pp

P    Pp      Pp

The results from the punnet square show that there will be 100% (4:0) inflated pods offsprings produced from this cross. However, their genotype will be heterozygous.

A cross between the constricted pods can be shown as:

      p         p

p    pp      pp

p     pp     pp

The results from this cross show that the offsprings produced will be 100% constricted pod plants.

5 0
3 years ago
True or False earthquake always occurs where there is a build up of friction along a fault?
Andre45 [30]
<span>True. Earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. This reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. These are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.</span>
8 0
4 years ago
Read 2 more answers
Circle the letter of each sentence that is true about life in the ocean.
maria [59]
A because if you look it up phytoplankton does uses photosynthesis to produce food.
8 0
3 years ago
a student viewing a cell with a microscope observes a cell wall, a cell membrane, and a nucleus.the presence of these structures
Alexandra [31]
If it has a cell wall, it most likely is not a eukaryotic, or animal, cell. Plants, bacteria, and fungi, have cell walls however. 
6 0
3 years ago
Read 2 more answers
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