What part of the respiratory system is composed of a single layer of epithelial tissues surrounded by a network of capillaries? a. alveoli b. trachea c. bronchiole
Answers
Answer:
Alveoli
Explanation:
- Alveoli is the part of the respiratory system which forms the site for an exchange of gases.
- The exchange is essential to release out carbon dioxide and take in oxygen.
- Alveoli being the site of gaseous exchange should have the essential features of a good respiratory surface which are - thin, moist and enriched with blood vessels.
- Due to this, the alveoli are made up of a single layer of epithelial cell and has a network of capillaries surrounding it that carry blood to facilitate the exchange the gases.
Related Questions
Government sanctioned activities to improve ecosystems have had little effect.TF
As water enters this plant cell structure, the cell becomes more turgid. This plant cell structure is the
What are two ways in which the geosphere is interacting with the hydrosphere in this river?
What are collections of similar cells called?A. clones B. tissues C. organs D. organisms
Answers
Answer:
Alkanes
Explanation:
There are 3 classes of hydrocarbons based on the on the presence of single, double and triple bond present in them. These classes are mentioned as under:
1) alkanes
2)alkenes
3)alkynes
Alkanes are the hydrocarbons which are compounds of carbon and hydrogen bonded by single bond. Their general formula is CnH2n+2 that means if in an alkane n = 3 then it will have 3 carbon and 2n+2 = 8 hydrogen molecules.
Alkenes are the hydrocarbons which are compounds of carbon and hydrogen bonded by double bond. Their general formula is CnH2n.
Alkynes are the hydrocarbons which are compounds of carbon and hydrogen bonded by triple bond. Their general formula is CnH2n-2.
As explained above, the given hydrocarbon is an alkane because its chemical formula is C3H8 which satisfies the condition for formula CnH2n+2 which is valid for alkanes.
Answers
Answer: There are many theories regarding the concept of death. By studying the theory of Kubler Ross we came to know that the first reactive phase in a person who is confronting death is deniel and isolation. It is used by almost all the patients. It is usually a temporary shock response to some kind of a bad news. The isolation in the patient can be created by any of his family members or friends. This condition arises in the patient when he or she thinks that they can no longer cope up with the situation and will die.
Final answer:
The first stage of Elisabeth Kübler-Ross's model for confronting death is termed 'Denial', where the individual initially reacts with disbelief about their fatal condition. This serves as a temporary buffer to slowly absorb the grave news.
Explanation:
According to the model conceived by Dr. Elisabeth Kübler-Ross, the first reactive phase that a person is suggested to experience when confronting death is Denial. Denial represents a person's initial shock or disbelief that they are dying. In this stage, it's common for individuals to think there must be some mistake in their diagnosis.
They might believe the tests were wrong, the physicians are mistaken, or even that they will wake up and realize it's all been a dream. Even though denial is considered an unhealthy coping mechanism in the long term, it serves a very important brief protective function in the initial stage, allowing individuals to absorb the news of their mortality gradually.
Learn more about Kübler-Ross Stages here:
#SPJ6
Answers
Answer: The correct answer is Plantae kingdom.
A cell with chloroplast and a cell wall made of cellulose would likely belong to plantae kingdom. This is because cell wall of plants is primarily made up of cellulose, which is a carbohydrate that provides rigidity to the cell wall.
Chloroplast is a specialized membrane bound organelle present in green plants and algae. It is the site of synthesizing food through photosynthesis.
Thus, Plantae kingdom is the right answer.
Answers
Answer: The correct answer is nitrogen, calcium and phosphorus.
Explanation:
Elements are defined as the substances which are made out of same type of atoms. For Example: Hydrogen, Oxygen etc..
Human body is made up of various types of elements in which 6 are most abundant.
Almost 99% of the mass of human body is made up of mainly six elements. They are oxygen (O), carbon (C), hydrogen (H), nitrogen (N), calcium (Ca) and phosphorus (P).
About 0.85 % of mass of human body is composed of other 5 elements which are potassium (K), sulfur (S), sodium (Na), chlorine (Cl) and magnesium (Mg).
Hence, the correct answer is nitrogen, calcium and phosphorus.
Answers
Answer: Half life
Explanation: Half life is the amount of time taken to reduce the original concentration of the reactant to half of its value.
Rate law expression for first order kinetics is given by:
where,
t= time taken for the decay
k = rate constant
t = time taken for decay process
a = initial amount of the reactant
a - x = amount left after decay process
for half life:
a-x =
A=amount
AO=Initial Amount
T=Time
H=Half life
Answers
Non-disjunction causes either the inclusion of an extra chromosome in offspring or the deletion of an entire chromosome. Non disjunction during either meiosis I or meiosis II creates gametes that will generate trisomies if fertilized.