Option c a slow mutation rate
Answer:
B. The nucleus is damaged.
Explanation:
Eukaryotic cells contain a membrane-bound nucleus and numerous membrane-enclosed organelles. DNA is present in the nucleus of the cell. If the nuclear membrane is ruptured/damaged then the nucleoplasm along with the DNA will openly float around the cytosol.
Answer:
The correct option will be option A (Input, graded potential).
Explanation:
The transfer of impulse through neurons takes place in the form of the action potential. these action potential are generated in the dendrite and moves along the axons which move to another nerve cell at the synapse.
Graded potential is the change in the membrane potential which can be depolarizing and hyperpolarizing depending on the stimulus. This graded potential which leads to action potential is generated in the postsynaptic dendrite.
Since dendrites receive the signals from the pre-synaptic axon of the neuron at a synapse it is also called the input region.
Thus, option A (Input, graded potential) is the correct answer.
Answer:
The answers to the blanks in the question in order is as follows:
- sweat
- lungs
- feaces
- Rectum
Explanation:
This question is describing the excretory organs and their excretory products. Excretion is the process by which waste products of metabolism are removed from the body system.
- As mentioned in the question, the SKIN is an excretory organ that excretes SWEAT which is made up of water, salts, and chemicals like urea.
- Lungs is another organ that excretes carbon dioxide (CO2) and water (H2O) as products of cellular respiration.
- The large intestine also produces FEACES, which is stored in the last part of the large intestine called RECTUM before it is excreted through the anus.
