Semen is the correct answer
The correct answer is D: I and II only.
Viruses have protein capsids, which protect their genetic material. This capsid sometimes is covered by viral envelopes which have glycoproteins on their surface. Glycoproteins help in the process of binding to the host cell and infecting it. In this example, virus III has the structure of a bacteriophage and it does not seem to have glycoproteins. Bacteriophages use their tail fibers to attach to the bacterial host and inject their genetic material. On the contrary, viruses I and II have glycoproteins sticking out of their envelopes.
Answer:
Some types of bacteria are autotrophs. Most autotrophs use a process called photosynthesis to make their food. In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose. The organisms that are present in the atmosphere are divided into 2 major divisions the autotrophic and the heterotrophic organisms. The autotrophic organisms are organisms that can prepare their own food by means of photosynthesis using light and carbon dioxide from the atmosphere whereas the heterotrophic organisms depend on the autotrophs for their food.
Answer is: D - Mitochondria and chloroplasts are much larger than prokaryotic cells.
