Answer:
The correct option is : c. the lungs
Explanation:
The heart is a muscular organ which is divided into four chambers in the humans, birds and other mammals. The four chambers of the heart are: right ventricle, left ventricle, right atria, left atria.
The right ventricle of the heart receives the deoxygenated blood from right atrium and then sends the deoxygenated blood to the lungs, through the pulmonary valve and arteries.
Answer :
Vinegar is a weak acid. This is used to make a naked egg. When an egg is added in the vinegar for one day / 24 hrs, it reacts with the eggshell. The calcium carbonate shell gets dissolve.
Then an egg without shell is formed and the size of the egg does not change. The calcium carbonate reacts with acetic acid and forms carbon dioxide.
When the shell-less egg is kept in the vinegar for 48 hrs i.e. 2 days again, the water content in it enters into the eggs through the membrane. Then the egg gets somewhat bigger.
Otherwise, for 24 hrs, vinegar is acting like an isotonic solution and only dissolves the shell. This experiment would be done for showing the osmosis process through the cell membrane.
I think your question is: <span>The energy released during this process was originally present in </span>
<span>(1) sunlight and then transferred to sugar </span>
<span>(2) sunlight and then transferred to oxygen </span>
<span>(3) the oxygen and then transferred to sugar </span>
<span>(4) the sugar and then transferred to oxygen
The right answer is (1)
The sunlight is absorbed by chlorophyll as an energy to catalyse the formation of ATP and 3-phosphoglycerate to form sugar (which is considered as energy supply.</span>
Answer:
The correct formula for photosynthesis is
6CO2+ 6H2O + light energy = C6H12O6+6O2.
Answer:
e. All of the choices describe characteristics of the ANS.
Explanation:
The autonomic nervous system is a regulatory and control system that influences the functions of internal organs.
Autonomic pathways consist of two types of motor neurons, these are the preganglionic neuron and the postganglionic neuron.
ANS stimulation of involuntary effectors is always excitatory. In the preganglionic autonomic neurons, and all postganglionic parasympathetic neurons are usually (cholinergic i.e receptors that bins with acetylcholine), as a result they release acetylcholine as a neurotransmitter. The cholinergic effects of preganglionic autonomic neurons are always excitatory.
The postganglionic neuron lies entirely in the peripheral nervous system.Yes!, this is so because the ganglion cells that give rise to postganglionic axons lies through the gray rami communicans and join the peripheral nerves of the peripheral nervous system.
