Answer:
<h3>Yes! </h3><h3>the navel also called abdomen or clinically umbilical cord is located at the abdomen which is on the body surface.</h3>
<h3>Hope this helps</h3><h3>Good luck ✅</h3>
Answer:
2000 ants per square meters.
Explanation:
The population density, D, of a population can be calculated by dividing the total number of individuals by the area covered by that population. That is;
D = N/A
Where;
D = population density
N = population of individual organism
A = area covered (m²)
According to this question, a population of 6000 ants lives inside a dead log that measures 3 square meters. Hence, N = 6000 ants, and A = 3m²
Therefore, the population density (D) = 6000/3
= 2000
The population density is 2000 ants/square meter.
Answer: The correct answer is A) It stores the energy from the glucose in the bonds between the phosphate groups.
ATP ( adenosine triphosphate) is considered as a form of chemical energy as the energy is stored in the high energy phosphoanhydride bonds, which are present between phosphate.
Whenever a body requires energy, glucose is metabolized and produces ATP. The energy from glucose molecule is stored in the ATP.
When ATP is hydrolyzed, it is converted into ADP ( adenosine diphosphate) and inorganic phosphate and the large amount of energy is released.
This is an overview of translation process.
Translation is the process in protein synthesis in which the genetic information encoded in mRNA is translated into sequence of amino acid in polypeptide chain.
Ribosomes bind to mRNA in the cytoplasm and move along the molecule in a 5 prime to 3 prime directon until it reaches a start codon i.e AUG. Anticodons on tRNA molecules align opposite appropriate codons according to complementary base pairing (e.g. AUG = UAC). Each tRNA molecule carries a specific amino acid (according to the genetic code)
. Ribosomes catalyse the formation of peptide bonds between adjacent amino acids (via condensation reactions)
. The ribosome moves along the mRNA molecule synthesising a polypeptide chain until it reaches a stop codon
. At this point translation ceases and the polypeptide chain is released
Answer: B) the presence of inherited antigens on the surfaces of erythrocytes.
Explanation:
A blood group is a classification of the blood according to the characteristics present on the surface of the red blood cells called erythrocytes. The two most important classifications for describing blood groups in humans are antigens (the AB0 system) and the Rh factor.
The AB0 system was discovered in 1901, and was the first known blood grouping system; its name comes from the <u>three types of groups that are identified: antigen A, antigen B, and 0 (zero) without antigens.</u>
<u>Each individual has a different set of erythrocyte antigens</u>, and because of their number -there are currently 32 known antigenic systems, plus some differentiated antigens that have not yet been attributed to any specific system- it is difficult to find two individuals with the same antigenic composition. Different antigenic systems are characterized by inducing antibody formation at different intensities; therefore some are more common and others are more rare. <u>So, the antigenic systems considered most important are the AB0 system and the RH system</u>.
Characteristics of the AB0 system are:
- People with type A blood: their red blood cells express type A antigens on their surface and develop antibodies to the B antigens in the plasma.
- People with type B blood: their red blood cells express type B antigens on their surface and develop antibodies to the B antigens in the plasma.
- Persons with type 0 blood: they have no such antigens (A or B) on the surface of their red blood cells, but develop antibodies to both types.
- Persons with type AB blood: having both antigens on the surface of their red blood cells, they do not make any antibodies to the A or B antigen.
The Rh system is the second blood group system in human blood transfusion with 50 antigens currently. In 1940, another group of antigens was discovered and they were called Rhesus factors (Rh factors). People with rhesus factors in their blood are classified as "Rh positive", while those without the factors are classified as "Rh negative". It is common for D-negative individuals to have no anti-D IgG (immunoglobulin-G) or IgM antibodies, since anti-D antibodies are not normally produced by sensitization to environmental substances. Rh-negative people form antibodies to the Rh factor, if they are exposed to Rh-positive blood.
