Answer:
The answer is option A.
A bacterium is a living cell, but a virus is not.
Hope this helps you
A cell consists of three parts: the cell membrane, the nucleus, and, between the two, the cytoplasm. so i would say one of those.
Answer:
False.
Explanation:
Neurotransmitter release occurs from the nervous terminal or varicosities in the neuronal axon. When an action potential reaches the nervous terminal, the neurotransmitter is released by exocytose. The molecule binds to its receptor in the postsynaptic neuron, triggering an answer. As long as the signal molecule is in the synaptic space, it keeps linking to its receptor and causing a postsynaptic response. To stop this process the neurotransmitter must be taken out from the synaptic space. There are two mechanisms by which the neurotransmitter can be eliminated:
• Enzymatic degradation/deactivation: There are specific enzymes in the synaptic space, which are in charge of inactivating the neurotransmitter by breaking or degrading it. The enzyme acetylcholinesterase prevents ACh from continuing to stimulate contraction.
• Reuptake: Receptors located in the presynaptic membrane can capture de molecule to store it back in new vesicles for posterior use. These transporters are active transport proteins that easily recognize the neurotransmitter.
The correct answer is controlled braking.
If someone suddenly pulls out in front of the person while driving, the natural reaction is to apply the brakes. Although, this is a good reaction if there is the adequate distance to stop and one applies the brakes accurately.
While in case of emergency stops, one should apply brakes in a way, which will maintain the vehicle in a straight line and permits one to turn if it becomes essential. For this, the person can use stab braking method of controlled braking.
In controlled braking, one applies the brakes as hard as one can without locking the wheels. There is a need to keep steering wheel movements very slight while attempting this. If one needs to make bigger steering amendments or if the wheels lock, release the brakes.
Answer: More advanced technology
Explanation:
During the time Darwin was alive technology wasn't nearly as advanced. Now scientist have much easier ways of testing and solving problems that Darwin could have never solved.
