Microscopes should be carried by the a) base and neck. b) ocular and neck. c) eyepiece and ocular. d) illuminator and precipitator.

The correct answer will be option-B

Explanation:

A microscope is an optical instrument used to see the microscopic bodies which could be a living or a non-living thing. If handled carefully, the microscope can work for 30-35 years.

The precaution that must be taken care off while moving a microscope from one position to another is that holds the microscope with both the hands with one hand holding the neck portion of the microscope while another hand at the base of the microscope which provides support.

Thus, Option-B is the correct answer.

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

digestion

it excretes wastes