The endometrium becomes more glandular and vascular during a. The follicular pha
ID: 85211 • Letter: T
Question
The endometrium becomes more glandular and vascular during a. The follicular phase b. Ovulation c. The luteal phase d. Menstruation A synapse a. May use gap junctions for direct to cell communication b. May use chemical communication for cell communication c Is triggered by an action potential d. Will open ligand gated channels on the surface of the post-synaptic membrane e. All of the above In a very cold environment, an organism might need to _ fluidity of the phospholipid membrane. This could be done with the addition of. a. Increase; unsaturated fatty acids b. Increase; saturated fatty acids c. Decrease; unsaturated fatty acids d. Decrease; saturated fatty acids Which of the following describes a step that is specific to a SYNAPSE ONLY (there is only one correct answer) a Vesicles fuse with the plasma membrane and release neurotransmitters b Voltage-gated potassium channels open releasing potassium from the cell c. Voltage-gated sodium channels open allowing sodium into the cell d. None of the aboveExplanation / Answer
Answer 56) The correct option is (a).
The endometrium becomes more glandular and vascular in the follicular phase due to the increased levels of oestrogens. The follicular phase is the first phase of the mentrual cycle and lasts for about 10-12 days.
Answer 57) The correct option is (a).
A synapse that uses gap junctions for the direct cell to cell communication is known as electrical synapse and a synapse that uses chemical junction for communications is known as a chemical synapse.
At the synapse, an action potential is triggered by the neuron.
The ligand-gated channels present on the surface of the postsynaptic membrane are opened in response to the neurotransmitters.
Answer 58) The correct option is (a).
In a very cold environment, the unsaturated fatty acids maintain the fluidity of the membrane. Unsaturated fatty acids have a kink at each double bond which loosens the adjacent phospholipids and thereby, preventing them from freezing in a very cold environment.
Answer 59) The correct option is (a).
As explained above, The ligand-gated channels present on the surface of the postsynaptic membrane are opened in response to the neurotransmitters. At a synapse, neurotransmitters are stored in the vesicles present on the surface of the pre-synaptic neurons.
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