<span>More than 50</span>. There are more than 7000 chemicals in cigarette smoke, 250 of which are known to be detrimental to health and 69 chemicals are carcinogenic (can cause cancer). Some of the carcinogenic chemicals in cigarette smoke are: Arsenic, Cadmium, Chromium, Formaldehyde and Nickel.
Answer:
DNA polymerase makes a molecule of RNA from a DNA template
Explanation:
DNA polymerase is an enzyme involved in the process of DNA replication. DNA replication replicates or synthesizes a new DNA replicate from the parental DNA.
The enzymes mentioned in the question perform a specified function which is matched with their description except for DNA polymerase as this enzyme is responsible for adding nucleotides to the synthesizing strand from the template strand f DNA.
Thus, the selected option is correct.
Answer:
B
Explanation:
The closer the light source the higher the amount of Oxygen gas.
Reasoning: Plants give off oxygen and according to the data the closer the light it the more bubbles there are. :)
Answer: (D) Tropical or subtropical
Explanation: Tropical or subtropical location is <u>a characteristic that refers to a Savannah biome</u> but <u>not to a temperate prairie biome.</u>
Chemical buffers in the body are substances that can absorb extra hydrogen ions preventing a change in pH. for example, during exercise muscle cells can produce excess carboxylic acid, which increases hydrogen ions
Owing to strong covalent intermolecular bonds, the H 2 molecule is chemically rather inert and exerts only weak van der Waals type interactions with a solid surface. Therefore, molecules are commonly accepted to be adsorbed physically. Nevertheless, the chemical interaction of the hydrogen molecule with the surface atoms is additionally considered.
What are chemical buffers?
A buffer is a solution that has a highly stable pH. If you add an acid or a base to a buffered solution, its pH won't change significantly.
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