Answer:
A virus attaches to a specific receptor site on the host cell membrane through attachment proteins in the capsid or via glycoproteins embedded in the viral envelope. The specificity of this interaction determines the host (and the cells within the host) that can be infected by a particular virus.
Explanation:
There are living organisms that do these processes alongside one another to sustain a balanced cycle.
Answer:Most of the space inside the atom is empty because most of the α-particles passed through the gold foil without getting deflected.
Explanation:
In homeostasis the body has a target set point which it tries to maintain, with the use of the negative feedback loop the body strives to stabilize the internal environment by regulating the temperature of the body.
Answer: In order to build a hypothesis, Joan should take an educated guess at what the effect of adding salt to the water will be on the water's boiling point. For example, the hypothesis may be,"The boiling point will increase". This hypothesis is one that can be verified or rejected via experimentation. The next step for Joan would be to set up an experiment to test this hypothesis.
