Answer:
256.
Explanation:
If a bacterium divides once in every half an hour, it means it will double in half an hour. Hence a number of the bacterium after half an hour will be 1×2=2. After one hour the number of bacterium will be 2×2=4. Similarly, it one and a half hours it will be 4×2=8. In two hours it will be 8×2=16 in two and half hours, it will be 16×2=32. In three hours it will be 32×2=64. In three and half hours it will be 64×2=128. Hence, in 4 (four) hours the number of bacterium will be 128×2=256.
Answer:
The answer here would be D, proteins.
Explanation:
Transcription forms RNA, while translation forms a polypeptide amino acid chain. Through a long process the polypeptide amino acid chain will eventually synthesize a protein.
Covalent bonds share electrons and ionic bonds transfer them.
Answer:
A compound microscope
Explanation:
A compound microscope is an instrument used to view the structure of the microscopic organism using the light source and the lenses.
The compound microscope contains an eyepiece which contains the ocular lens and the objective lenses n the nosepiece closer to the specimen.
To view the living organism of the ponds, a compound microscope especially a bright field microscope is used when the light from the lower portion brightens the sample and the object appears darker.
Thus, the compound microscope is the correct answer.
