BIOLOGY HIGH SCHOOL

What structure of the respiratory system allows for gas exchange alveoli
pharynx
nose
trachea

Answers

Answer 1
Answer:

The correct answer is alveoli.

At the end of the respiratory tree, alveoli are located. These are tiny, balloon-shaped air sacs are arranged in clusters throughout the lungs. these are the site of  gaseous exchange as alveoli are surrounded by thin pulmonary capillaries which allows exchange of gases. The oxygen diffuse into the blood capillaries and the carbon dioxide diffused into the alveolar space from the blood capillaries.

Answer 2
Answer: Hello Pgoodrichstat!

The structure that allows for gas exchange is alveoli.

Cheers!
-Blizzard

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Water boils when its vapor pressure becomes equal to _________ pressure.

Answers


I believe its air pressure but im not sure

Saliva begins to change food starch into?

Answers

The first step of chemical digestion starts in the mouth. Saliva, the fluid released by the salivary glands in the mouth, contains an enzyme that breakdowns food starch and turns it into simple sugars. This enzyme is called amylase or also known as alpha-amylase or ptyalin. 

Saliva begins changing starches into sugar while still in the mouth.

Explanation:

Why might a blood cell have a different shape than a muscle cell

Answers

Blood cells carry oxygen to the rest of the cells in the body, and hemoglobin can help it do so. But in order for the hemoglobin to be effective enough, the blood cell has to be a certain kind of shape.

Primary producers use __________ from the sun.a. fructose
b. sucrose
c. energy
d. ADP

Answers

The answer to this question is letter c. energy.
Primary producers use energy from the sun.

> The sun is the primary source of energy (solar energy)
>Producers are the beginning of a simple food chain. It receives the largest amount of energy. These producers include plants.

Why would the population of rabbits decrease if the population of mice decreased?

Answers

The predators of mice would not have enough to feed on due to competition within its species, and so it might eat rabbits instead, as it can change the species on the food web.
Because the predators would start to prey on other small animals such as rabbits since there are less mice.

a. Discuss one situation when you would use wormbase first? b. Discuss one situation when you would use OMIM first? c. Discuss one situation when you would use BLAST first? Disease: Bipolar Disorder 1. In order to find the genes influencing this disease or condition, which database would you use first? We used: NCIB, OMIM, Wormbase, BLAST. 2. Approximately how many genes (or DNA elements) are involved in this disease or condition? Explain how you came up with this number 3. Provide the genetic symbol of one of the protein-coding gene involved in this disease or condition. Explain how you know this gene is a protein-coding gene. 4. What is the cytogenetic location of this gene in Question 3? Explain what this location means. 5.What is the function of the protein coded by this gene in question 3? 6. All human diseases and traits are polygenic. Explain what "polygenic" means in this context. 7. Explain how you could find out if C. elegans has a protein similar to the one in Quesion 5? If you know the location or the OMIM# of Bipolar Disorder I can figure out the all the questions. I can't find the Bipolar Disorder OMIM and also correct for wormbase.

Answers

protein-coding gene

The genetic code is stored in the DNA of a cell. it is copied during the process of replication. An enzyme called helicase unwinds the double strand helix of DNA by breaking the hydrogen bonds that hold the two strands together, thus separating forming  what is called replication fork. Next the enzyme DNA polymerase uses the single strands as a template and makes  a new DNA strand by copying the template.
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