Answer:
synapses
Explanation:
Brain cells have the efficiency to talk to its nearby cells and thus send or receive pre informed signals across connections. This process of intra brain cell communication is called as synapses
As we grow our brain organizes the previously established synaptic pathways and shuts down less-active, inefficient synapses
Neurons (brain cells) preserve their most active connections with the nearby cells and thus lapse the remaining synapses
SIRP alpha protein (found on the surface of cells) helps in cementing the active synaptic connections between brain cells
We develop connections between brain cells through a process called synaptic plasticity and is the ability of the connections between neurons (brain cells) to change in strength and structure
Long-Term Potentiation (LTP): LTP is a process by which synaptic connections become stronger and more efficient over time. It occurs when a synapse is repeatedly and persistently stimulated, leading to an increase in the release of neurotransmitters and an enhancement of the postsynaptic neuron's responsiveness to those neurotransmitters. LTP is believed to be one of the cellular mechanisms underlying learning and memory.
Long-Term Depression (LTD): LTD is the opposite of LTP, where synaptic connections become weaker and less effective. It occurs when a synapse is weakly stimulated or not used for an extended period, resulting in a decrease in neurotransmitter release and a reduction in the postsynaptic neuron's responsiveness.
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b. just before they form flowers.
c. during winter.
d. in the spring
Answer:
Explanation:
Plants generally go dormant in response to adverse growing conditions, such as when trees or perennial garden plants go dormant during the cold winter months, or when turfgrass goes dormant in a lawn during a period of intense heat or drought.
Answer: external fertilization
Explanation:
External fertilization is the process of fertilization in which the male sperm cells fuses with the female egg cells outside the body of the female. This type of fertilization is used by the organisms which live in the water body.
The salmon is a fish species which utilizes external fertilization. In the case of salmon, the female salmon drops the eggs in the bottom of the water which are fertilized by male salmon after secreting their sperms over these eggs.
B) with phosphodiester bonds connecting sugars and phosphate groups
C) with hydrogen bonds connecting complementary sugars
D) with ionic bonds between sugars and phosphate groups
The complementary strands of DNA are held together through hydrogen bonds that connect the complementary bases. Adenine pairs with thymine, and cytosine pairs with guanine. Phosphodiester bonds connect the sugars and phosphate groups along each strand, but they do not bind the complementary strands together.
The complementary strands of DNA are held together predominantly through hydrogen bonds that connect complementary bases. Among the four types of bases in DNA, adenine (A) always pairs with thymine (T) through two hydrogen bonds, and cytosine (C) always pairs with guanine (G) via three hydrogen bonds. Therefore, the correct answer is Option A) with hydrogen bonds connecting complementary bases. Option B is incorrect because phosphodiester bonds connect the sugars and phosphate groups along each backbone of a DNA molecule, but they don’t bind the complementary strands together. Option C and Option D are also incorrect as neither sugars nor ionic bonds play a substantial role in holding the complementary strands of DNA together.
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