Answer:
Stomata opens to intake carbon dioxide in the presence of light there by allowing the process of photosynthesis during the day time.
Explanation:
The gaurd cell of the stomata play an important role in regulating the photosynthesis. During the day time, the stomata is open which allows intake of carbon dioxide from atmosphere. Carbon dioxide is very essential for the process of photosynthesis. Thus, during day time when stomata is open photosynthesis takes place while during night time when stomata is closed photosynthesis do not occur. Also the stomata regulate the loss of water from the leaves thereby ensuring availability of sufficient water molecules at the time of photosynthesis.
Answer:
All errors described will result in a negative result
Explanation:
The enzyme-linked immunosorbent assay (ELISA), is a test used to detect and measure antibodies, antigens and proteins in the blood. An ELISA test uses antibodies and/or antigens that are coupled to an easily-assayed enzyme, thereby this approach combines antibody specificity with the sensitivity of simple enzyme assays. ELISA test involves an antibody or antigen that reacts to form an antigen-antibody complex, where such reaction is interpreted as a positive result. The negative results are evidenced by the lack of reaction, which may be caused by some error during the chain of reactions in the ELISA test: antigen >> primary antibody (reaction) >> functional secondary antibody (reaction) >> conjugated enzyme (reaction) >> functional substrate.
C. directional selection
True
Sorry, I don't know the second one.
Except Erythrocytes, <u>because insects do not have the Red Blood Cells</u>.
Erythrocytes- Red blood cells, also known as erythrocytes or RBCs, are biconcave, anucleate cells that contain <u>hemoglobin </u>and carry oxygen and carbon dioxide between the lungs and organs. Erythropoiesis, a process in the red bone marrow, is what creates them.
Hemoglobin- The protein molecule known as hemoglobin is found in red blood cells and is responsible for transporting oxygen from the lungs to the body's <u>tissues </u>and carbon dioxide from the tissues back to the lungs. Four linked protein molecules (globulin chains) make up the hemoglobin molecule.
A collection of cells with similar structures and functions is referred to as a tissue.
To know more about the Erythrocytes, click on the below link,
brainly.com/question/16794540
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Answer:
b
Explanation:
abiotic factors are nonliving things and gravel is nonliving so that has to be the answer
