Question

which safety procedure should be followed if this symbol is seen in the science lab?
○ a you need to have safety goggles on at all times.
○ b you must refrain from eating in the laboratory.
○ c your hands should be dry before touching the equipment.
○ d you should be wearing a protective apron before starting.

question 33 (1 point)
the cells of all organisms contain dna. in cells of which of the following groups is the cellular dna enclosed in a nucleus?

○ a eukaryotes
○ b bacteria
○ c viruses
○ d prokaryotes

Explanation:

First Question (Lab Safety Symbol)

The symbol likely represents electrical equipment. Dry hands prevent electric shock. Option a is for eye hazards, b for food in lab, d for chemical spills. So c is correct.

Eukaryotes have a nucleus enclosing DNA. Bacteria (prokaryotes) have no nucleus, viruses are non - cellular. So eukaryotes (a) is correct.

Answer:

c. Your hands should be dry before touching the equipment.

Second Question (Cellular DNA in Nucleus)