Since the other answer got deleted, i'll just answer it for you.
a sinoatrial node is the main pacemaker that begins each heartbeat located in the junctions of superior vena cava and the right atrium. It signals from the node that spread through the atria and determines the heart rates.
<h2>Answer:</h2>
The correct answer is option A which is an abnormal male with nondisjunction.
<h3>Explanation:</h3>
The karytope is the complete picture of chromosomes present in a cell of an individual.
It is used to study the chromosome number and abnormalities related with chromosome numbers.
Chromosomal nondisjunction is the consequence when the homologous chromosomes are not completely separated from each other during meiosis.
While chromosomal translocation is the crossing over of genetic material between two chromosomes.
Only chromosomal disjunction can be seen from the karyotype.
They are living organisms. Not a very good question is there more to it
Starch is stored in plants and is present in Amylose and Amylopectin while glycogen is found in animals and is stored in the liver. Glycogen is an extensively branched chain of glucose molecule.
Eukarya. Eukaryotes are the only organisms that have true nuclei and membrane-bound organelles, though some bacteria have a pseudo-nuclei.
The reason why only eukaryotes have true nuclei and membrane-bound organelles is because only eukaryotes have figured out how to create so much energy through the mitochondria, which is required for high compartmentalization.
