The answer is an envelope.
A virus is an infectious agent that can replicate only inside a host cell. When it is outside the cell, it consists of genetic material coated with protein capsid. Some viruses also have an envelope which covers capsid. The function of the envelope is to identify and bind some receptor sites on the host membranes. After fusing with the cell membrane, it allows to capsid and genetic material to enter the cell and infect it.
Answer:
Biomolecules are crucial to the storage of energy energy in the body.
Biomolecules conserve energy using covalent chemical bonds.
Explanation
A covalent bond in chemistry refers to a chemical bond that is formed when two atoms share a pair each of electrons.
So some of these molecules which have high energy (such as glycogen and triglycerides) are able to keep or store such energy in the form of covalent chemical bonds. Examples of energy-rich biomolecules are:
- glycogen and
- triglycerides
Cells synthesize such molecules and store them for later release of the energy.
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Answer:
a TUNDRA is a vast treeless region bordering the Arctic ocean.The positive and negative interactions that affect populations in the tundra ecosystem .
Explanation:
Tundra is used to describe types of vegetation in the treeless high latitudes between taiga and polar ice caps, and at high altitude across the mountain above timberline.
POSITIVE AND NEGATIVE INTERACTIONS:-
The tundra is perhaps the most fragile of all the biomes because of its short growing season. A willow 10 centimeter ( 4 inches) high may have a trunk 7 centimeter in diameter and may be 50 YEARS OLD.
Human activities in the tundra leave scars that persist for centuries .
FORTUNATELY , for the tundra inhabitants, the impact of civilization is localized around oil mining and drilling sites, pipelines,mines and military bases.
Answer:
Explanation:
pros are they look like humans maybe even talk and walk like us but do/will they act like us...
