Question

question 49
1 pts
capsules of genetic material that are even smaller than bacteria and can make people super sick are known as:
○ non - toxic contaminants.
○ salmonella.
○ chemicals.
○ viruses.
question 50
1 pts
all proteins are the same.
○ true
○ false

Explanation:

Question 49

To solve this, we analyze each option:

• Non - toxic contaminants: Viruses that make people sick are toxic, so this is incorrect.
• Salmonella: It is a type of bacteria, not smaller than bacteria, so this is incorrect.
• Chemicals: Viruses are not chemicals; they are biological entities, so this is incorrect.
• Viruses: Viruses are capsules of genetic material (DNA or RNA) enclosed in a protein coat, and they are smaller than bacteria and can cause severe illness.

Proteins have different structures (primary, secondary, tertiary, quaternary) and functions. They are made of different sequences of amino acids, which leads to different shapes and functions. For example, hemoglobin (carries oxygen) and insulin (regulates blood sugar) are different proteins. So the statement "All proteins are the same" is false.

Answer:

D. viruses.

Question 50