The right answer is a surface glycoprotein.
The antigens of the non-self correspond to any substance foreign to the organism, identified as such by the immune system of our organism which produces an energetic defense. Antigens are usually proteins (more specifically glycoproteins) contained in cells or foreign bodies (red blood cells transfused, organs transplanted, bacteria, viruses), or present in the environment (pollen, mite droppings, cat hair , etc.).
Our body has its own antigens that allow it to have a "specific identity card" and will be recognized as foreign by other organizations. They are called "self antigens".
Answer:
D) How do living things get energy?
G) How are living things related?
F) Where do living things make their home?
Explanation:
Different types of organisms are present on this Earth which interact with both abiotic and biotic factors and influence the nature of the environment. So there is a need to study the living organisms in which the first thing is to arrange the living organism by a process called classification.
The questions that are necessary to classify the organisms include related to the mode of energy or nutrition, the relation between various species at the morphological and molecular level, the habitat. The relationship between the organism is a very important aspect as it makes the classification easily according to their similarities and dissimilarities.
Thus, the selected options are the correct answer.
The echinoderm with long spines
belongs to the class Echinoidea which includes sea urchins, heart urchins, cake
urchins and sand dollars. This spine serves as their protective mechanism from
predators. The spines are joined to the skeleton and muscles surround it. The muscles
enable them to swivel its spines from predators.
Hiv doesnt kill people if they are taking their medicine they can live a long life but because their t-cell so like people who are not affected say they get a cold they can get over it in like a month a cold can kill a person with hiv because there system is not that strong .well i think
Answer:
I think the answer would be C
Explanation:
Btw don't be afraid to correct me if i'm wrong :) And don't worry about putting me as brainiest
