Inhalent or incurrent pores
Hi there!
The most important thing to note here is that eukaryotic cells have nuclei. This is the circular blob-like organelle which encases the DNA. Some other differences eukaryotic cells have over prokaryotic cells include more complicated organelles which are membrane bound.
If we look at these images, what we are looking for is a nuclei, as this will appear most evident. When we look at A and B, we can see a circular organelle that is extremely prominent. However, with C and D, that does not appear. C specifically, the nucleic code is exposed and not membrane bound, meaning it is not prokaryotic. D does not appear to contain a nucleus or any genetic material.
Thus, your answer is A and B.
Hope this helps!
Answer:
both right in own way
Explanation:
first;green house gas obviously helps to increase temperature of earth.
second;some winter days are still very cold because of global warming. this is also due to such work which helps to increase temperature of earth as well as climate change.
Answer:
For the sympathetic nervous system:
i. the preganglionic neurotransmitter is acetylcholine, while
ii. the postganglionic neurotransmitter is norepinephrine
For the parasympathetic nervous system both pre- and postganglionic neurones use acetylcholine as their neurotransmitter.
Explanation:
Sympathetic and parasympathetic nervous system are the two components of the autonomic nervous system.
The sympathetic system arises from the the thoracolumbar (T1-L2) region of the spinal cord.
The parasympathetic nervous system originate from
i. the cranial nuclei in the brainstem (brainstem nuclei cranial nerve III, VII, IX, and X), and
ii. sacral nerves (S2-S4).
Preganglionic and postganglionic neurones link both sympathetic and parasympathetic systems to their effector organs.
At synaptic junctions in the autonomic ganglia ththe preganglionic neuron of both sympathetic and parasympathetic nervous system use cholinergic neurotransmitter (acetylcholine). The postganglionic neurotransmitters are not the same for both sympathetic and parasympathetic systems. The sympathetic uses norepinephrine (adrenergic) while the parasympathetic maintains the acetylcholine.
The correct option is this: PLANTS NATURALLY GROW TOWARD A SOURCE OF LIGHT.
Darwin carried out an experiment in which he found that when the tip of a plant is covered with an opaque material, the plant grow up straight but when it is covered with a transparent material that allow light, the plant bend toward the source of light. He thus, concluded that the tip of the plant is responsible for sensing light which is needed for photosynthesis.
