World Mosquito day is celebrated on

[HDquiz quiz = “1968”]

Every year World Mosquito day is observed on the 20th of August throughout the world commemorating the discovery of the presence of malarial parasite (Plasmodium sp.) in the gut of female anopheles mosquito by Ronald Ross in 1897. he received the Nobel prize in Physiology and Medicine in 1902 for his discovery.

During an injury nasal septum gets damaged. For it’s recovery which cartilage is preferred?

[HDquiz quiz = “1964”]

Internally, the nasal septum divides the nasal cavity into the right and left sides. The nasal septum is made up of bone and cartilage. The cartilage portion of the nasal septum is the hyaline type of cartilage. Apart from the nasal septum, hyaline cartilage is also present in the larynx, trachea, etc. Therefore, if the nasal septum gets damaged, hyaline cartilage will be preferred.

The phagocytic cell present in the kidney is

[HDquiz quiz = “1959”]

The macrophage-like phagocytic cell present in the kidney is called Mesangial cells. Mesangial cells are located in the glomerular capillaries of the renal corpuscle in the kidney. They are derived from smooth muscles and phagocytize components of the glomerular basal lamina. Apart from phagocytic functions, they also provide structural support to the glomerular capillaries and regulate glomerular filtration.

CD19 is a marker for

[HDquiz quiz = “1952”]

The Cluster of Differentiation 19 or CD19 molecule is a protein expressed on the cell surface of the B lymphocytes or the B cell. The protein CD19 is a transmembrane protein encoded by the gene CD19. CD19 protein helps in the B cell signaling pathway and recruits cytoplasmic signaling molecules. As CD19 is only expressed in the B Cell, CD19 is the marker for B lymphocytes. Mutation in CD19 leads to severe immunodeficiency syndromes in which the production of antibodies decreased.

Compared to a bull a bullock is docile because of:

[wp_quiz id=”14416″]

The bull or bullock is the adult male of the genus Bos (Bos taurus or Bos taurus). In general, the bull is uncastrated and has a functional testis. On the other hand, a bullock is castrated and testicles are removed. Due to the absence of functional testicles, the testosterone level in the blood of bull is reduced. therefore, the bullock is docile compred the bull. 

Bulls are fertile and can be used in the and due to the absence of functional testicles, They can breed and produce calves. On the other hand, oxen are castrated. They are infertile and cannot take part in breeding.

A gymnast is able to balance his body upside down even in the total darkness because of

[wp_quiz id=”14317″]

In vertebrates, the vestibular system is associated with the sense of balance. The vestibular system is the proprioceptive somatosensory system present in the inner ear. The main function of the vestibular system is to sense the spatial position of the head and the other body parts as well as the motion.

The vestibular system consists of three semicircular canals that detect the angular position of the head and the utricle and saccule detect the spatial orientation of the head. The stimulation received by the vestibular system sends to the brain through the vestibulocochlear nerve.

The protein responsible for hearing and balance in vertebrates is

[wp_quiz id=”14394″]

The protein responsible for hearing and balance in vertebrates is transmembrane channel-like protein (TMC) 1. The TMC1 protein forms a sound- and motion-activated pore in the inner ear of vertebrates. This pore helps in the conversion of sound and head movement into electrical nerve signals and sends it to the hearing and balance center of the brain. This nerve signaling is then encoded and enables us to hear and balance our posture. 

Thus, the TMC1 protein helps in the mechanosensory transduction of sound and maintaining balance. The TMC1 protein was discovered in 2002.

Reference: Pan et al., 2018, Neuron

The term phylum was given by

[wp_quiz id=”14361″]

Phylum is the second-highest taxonomic rank in the classification of organisms. The rank phylum is present below the kingdom and above the class.

The term phylum is derived from the Greek word “phylon” which means race. The term phylum was given by German biologist Ernst Heinrich Philipp August Haeckel (Ernst Haeckel) (1834-1919).

Dolphins are only able to taste

[wp_quiz id=”14348″]

Dolphins are aquatic mammals belonging to the infraorder Cetacea. The five primary tastes are sweet, salty, bitter, savory (umami), and sour. These tastes are detected by the tastes receptors present in the taste buds of the tongue. However, not all animals possess the receptors for all five types of tastes.

Research showed that the genes that code for the receptors such as sweet, bitter, umami, and sour are nonfunctional in Dolphins. Therefore, dolphins are unable to taste sweet, bitter, umami, and sour. However, dolphins can only taste saltiness.

Source: Feng et al., Genome Biol. Evol. 6(6):1254–1265

The scientific name of the wild pig is

[wp_quiz id=”14343″]

The scientific name of the wild pig is Sus scrofa. Wild pig is also known as wild boar or wild swine. The animal is belonging to the order Artiodactyla of class Mammalia.

Cynomys gunnisoni is the scientific name of Gunnison’s prairie dog. Castor canadensis is the scientific name of the North American beaver. Dolichotis patagonum is the scientific name of the Patagonian mara.