Answer:
The main functions of the cell wall are to provide structure, support, and protection for the cell
I think it’s C explanation : i learned this a while ago
Answer:
reagin type antibody.
Explanation:
The rapid plasma reagin test is a test used to diagnose syphilis.
Syphilis is a sexually transmitted disease which is caused by treponema pallidum.
The rapid plasma reagin test is not for measuring the antibodies against actual bacteria but for measuring the antibodies formation due to material released because of tissues damaged by treponema pallidum like IgG and IgM against lipodial materials which is released from damaged cells.
Answer:
REACTANTS CARBON DIOXIDE+ OXYGEN
PRODUCTS:Glucose+Lactic Acid+Energy
Although the actual questions are missing from your ask, here's how you can tell.
If the study will be messed up (added bias) through interaction with the subjects the study should be observational. For example if a biologists wanted to study the eating habits of wild birds in the tropics, they would need to do an observational study. if they did a controlled experiment, the birds will change their eating habits based on human interaction, thus making the study invalid.
If the study requires specific measurements, close monitoring, or contact and interaction with the subjects the study should be a controlled experiment. For example, if a scientist wanted to test out a new drug, the health of patients would need to be closely monitored.
