1. Contraction of the diaphragm causes:
A. a person to exhale.
B. the size of the chest cavity to increase.
C. air to flow from the lungs to the outside.
D. compression of the lungs.
is it B
2. The function of the large intestine is to:
A. supply enzymes for digestion.
B. remove water.
C. absorb nutrients.
D. produce vitamins.
is it C
3. An example of assimilation is the:
A. synthesis of carbon.
B. synthesis of proteins.
C. hydrolysis of water.
D. hydrolysis of oxygen.
is it A
1. Contraction of the diaphragm causes:
A. a person to exhale.
B. the size of the chest cavity to increase.
C. air to flow from the lungs to the outside.
D. compression of the lungs.
To determine the correct answer, let's break down the question:
The diaphragm is a muscle located below the lungs that plays a crucial role in breathing. When the diaphragm contracts, this means it is moving downward, causing an expansion of the chest cavity. This expansion creates more space for the lungs to expand and fill with air. Therefore, the correct answer is B, which states that the contraction of the diaphragm causes the size of the chest cavity to increase.
2. The function of the large intestine is to:
A. supply enzymes for digestion.
B. remove water.
C. absorb nutrients.
D. produce vitamins.
To find the correct answer, let's analyze the options provided:
The large intestine, also known as the colon, is the final portion of the digestive system. It is responsible for the absorption of water, electrolytes, and minerals from indigestible food matter, as well as the formation and excretion of feces. Additionally, it houses bacteria that aid in the breakdown of certain substances. Considering these functions, the correct answer is B, which states that the large intestine removes water.
3. An example of assimilation is the:
A. synthesis of carbon.
B. synthesis of proteins.
C. hydrolysis of water.
D. hydrolysis of oxygen.
To determine the correct answer, let's understand what assimilation means in this context:
Assimilation refers to the process by which organisms incorporate and use substances from their environment to build or grow new cells or tissues. With that in mind, let's analyze the options:
A. Synthesis of carbon: Carbon is an element and is not synthesized by organisms.
B. Synthesis of proteins: Proteins are built through a process called protein synthesis, wherein amino acids are joined together. This is an example of assimilation, as organisms are using nutrients to synthesize new proteins.
C. Hydrolysis of water: Hydrolysis is the opposite of synthesis and involves breaking down a substance using water. However, this process is not an example of assimilation.
D. Hydrolysis of oxygen: Oxygen is a gas and typically does not undergo hydrolysis. Therefore, this option is not a correct example of assimilation.
Based on this analysis, the correct answer is B, synthesis of proteins, which represents the assimilation process of building new cellular components using nutrients.