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
bixtya [17]
2 years ago
14

Why are all cells very small?

Biology
1 answer:
kolezko [41]2 years ago
7 0

Answer:

Cells are small because they need to keep a surface area to volume ratio that allows for adequate intake of nutrients while being able to excrete the cells waste. That is why the cell needs to be small. The smaller it is, the larger the surface area to volume ratio is. ... This is why cells are so small.

explicación:

The important point is that the surface area to the volume ratio gets smaller as the cell gets larger. Thus, if the cell grows beyond a certain limit, not enough material will be able to cross the membrane fast enough to accommodate the increased cellular volume. ... That is why cells are so small.

You might be interested in
HELP PLS I WILL GIVE LOTS OF POINTS pls answer good and i will give brainliest and give more points if its correct
Fofino [41]

Answer: .374 and .626

Explanation:

5. total number of alleles = 4712 + 2816 = 7528

       frequencey of B allele = B allele / total number of alleles --> 2816/7528 = 0.374                

             

6. total number of alleles =  4712 + 2816 = 7528

   freq of b allele = b allele/total number of alleles --> 4712/7528 = 0.626

We can confirm our answer as correct because if we add up the answers to 5 and 6 we should get one:

0.374 + 0.626 = 1

6 0
3 years ago
Where do the branches of the bronchial tree ultimately end? 2. list the steps of the pulmonary circuit of the cardiovascular sys
Aneli [31]
1. The branches of the bronchial tree ultimately ends at the alveoli.
Bronchial tree consist of bronchi, bronchioles, and alveoli. Bronchi are formed as the lower part of the trachea divides into two tubes. Bronchioles are smaller tube divisions of the bronchi. It walls contain smooth muscle and no cartilage. Alveoli are tiny ends of the alveolar ducts, which functions as the site for gaseous exchange. 

2. Blood flows from the left atrium; mitral (bicuspid valves), the left ventricle, aortic valve, aorta, veins and heart, right side of the heart, superior and inferior vena cavae, right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary trunk, pulmonary artery, lungs, pulmonary veins, then back to the heart...

3. Arteries and the veins differ in structures and they way they functions; Arteries carry oxygenated blood away from the heart to the body (except pulmonary artery) while veins carry deoxygenated blood back from the body to the heart (except pulmonary veins). A structural differences includes; the veins contain valves while arteries lack. Arteries have narrow lumen while veins have wide lumen. Lastly, blood carried by veins has higher pressure compared to blood carried in vessels.

4. The circulatory and respiratory systems work together to circulate blood and oxygen throughout the body. Air moves in and out of the lungs through the trachea, bronchi, and the bronchioles. Blood moves in and out of the lungs throgh the pulmonary arteries and veins that connect to the heart.

5. The cartilage rings of the trachea
They are strong but flexible tissues which support the trachea or the windpipe while still allowing it to move and flex during breathing. Additionally these cartilage rings are C-shaped to provide room for the esophagus, which lies along the back side of the trachea.

6. Functions of the larynx includes;
To protect the airway from choking on material in the throat
to regulate the flow of air into our lungs
The production of sounds used for speech 
Larynx is part of the respiratory system and is located between the pharynx and the trachea. Humans use larynx to breathe, talk and swallow. 

7. Structures that make up the pathway of air through the respiratory system starting with the external nares; We start with; External nares, nasal cavity, internal nares, nasopharynx, laryngopharynx,oropharynx, larynx, trachea, primary bronchus, secondary bronchus, tertiary bronchus, bronchiole, terminal bronchiole, respiratory bronchiole, alveolar duct, alveolar sac and alveolus. 
6 0
2 years ago
What becomes "deficient" when someone is infected with hiv?
swat32
When someone is HIV positive it is their immune system is deficient this can lead to AIDS or other serious infections
6 0
3 years ago
1) State three economic importance of Amoebiasis,​
aliina [53]

Answer:

An amoeba's economic value can be found in medicine and nutrient recycling. According to Biology Reference, certain amoeba species can cause sickness and death, while others are important in maintaining healthy ecosystems because they recycle the nutrients needed by bacteria and keep the bacterium population under control.

<u>OAmalOHopeO</u>

3 0
3 years ago
Lucille was finding it difficult to play soccer after school. Her doctor tested her cells and found that they contained low leve
Mashutka [201]

Answer:

The Lucille’s cells need Oxygen and glucose in order to function her body properly.

Explanation:

Our body breakdown the glucose using oxygen in order to produce energy.

By respiratory system we inhale oxygen and

By digestive system we digest food into glucose.

Our circulatory system transfer the Glucose and Oxygen to the all cells of our body,

Hence we can conclude that the Lucille’s cells need Oxygen and glucose in order to function her body properly.

8 0
2 years ago
Other questions:
  • Which of the following evidence statements would be supported by the two models
    14·1 answer
  • How can we protect the world's biodiversity??
    9·1 answer
  • How are the reproductive cycles of a fungus and a pteridophyte similar
    5·1 answer
  • Which statement below correctly summarizes cellular respiration?
    9·1 answer
  • How many bullets were left in the Gun? Explain
    10·1 answer
  • 8.Most of the ATP molecules are syntthsized during what stage of aerobic respiration?
    13·1 answer
  • Which type of microscope has the lowest magnification power?
    12·1 answer
  • Plants _____.
    6·2 answers
  • All nucleotides of DNA and RNA contain a
    6·2 answers
  • What extended schleiden's hypothesis by suggesting that animal tissue was made up of cells?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!