Answer – Chromosome
In eukaryotic nuclei, DNA and proteins are packaged into organized cellular structures known as Chromosomes. Genetic material is housed in the nucleus where is it tightly packed into linear chromosomes. Chromosomes consist of a complex of DNA and protein which is known as chromatin. Chromatins are organized into subunits called nucleosomes
Answer:
proprioceptor
Explanation:
Proprioceptors are the receptor located in a joint, muscle, or tendon. These receptors are concerned with locomotion, posture, and muscle tone. These receptors respond to internal stimuli only and are present in a specific location in the body. For example, the tendon organ is a proprioceptor present in the tendon. The function of the tendon organ is to monitor the muscle tension and to prevent its tearing. These receptors also help smooth start and termination of muscle contraction.
Proprioceptors are the mechanoreceptors that regulate the body’s equilibrium and posture by their role in reflex actions that maintain muscle tone. They sense the position of limbs by detecting the degree of muscle relaxation, the stretch of tendons, and ligament movements.
The first step begins with: A. the mouth.
