(Q).
Q: What is the color of mercury oxide? Read this paragraph and choose the correct option from the provided answers: Mercury(II) oxide is a red solid. When it is heated, it decomposes into mercury metal and oxygen gas. Choices: - yellow - orange - green - red A:
(A).
red

(Q).
Q: What are known as the building blocks of proteins? Read this paragraph and choose the correct option from the provided answers: Introduction Since the rediscovery of Mendel's work in 1900, the definition of the gene has progressed from an abstract unit of heredity to a tangible molecular entity capable of replication, expression, and mutation (Figure 15.1). Genes are composed of DNA and are linearly arranged on chromosomes. Genes specify the sequences of amino acids, which are the building blocks of proteins. In turn, proteins are responsible for orchestrating nearly every function of the cell. Both genes and the proteins they encode are absolutely essential to life as we know it. Choices: - organism acids - protein acids - bases - amino acids A:
(A).
amino acids

(Q).
Q: John dalton thought that what unit, which means "indivisible", could not be divided into smaller, simpler particles? Read this paragraph and choose the correct option from the provided answers: Scientists have long wanted to find the most basic building blocks of the universe. They asked, "what are the fundamental particles of matter that cannot be subdivided into smaller, simpler particles," and "what holds these particles together?" The quest for fundamental particles began thousands of years ago. Scientists thought they had finally found them when John Dalton discovered the atom in 1803 (see the timeline in Table below ). The word atom means "indivisible," and Dalton thought that the atom could not be divided into smaller, simpler particles. Choices: - electron - nucleus - neutron - atom A:
(A).
atom