The correct answer is -- Endocytosis is the only way amoebas can bring food into their cells, while red algae can produce food by photosynthesis.
Amoeba is an unicellular organism. It is an heterotroph follows holozoic nutrition. It engulf its food with the help of pesudopodia. engulfing of solid food is called endocytosis, whereas red algae such as Polysiphonia is an autotroph which synthesis its own food by the process of photosynthesis. thus, in red algae endocytosis does not occur.
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.
Learn more about synaptic plasticity at:
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Answer:
The total of O2 + CO2 is not a mathematical expression that can be added together.
O2 and CO2 represent different chemical compounds: O2 refers to oxygen gas (two oxygen atoms bonded together), and CO2 refers to carbon dioxide (one carbon atom bonded to two oxygen atoms).
In chemistry, we do not add or combine the formulas of different compounds in the same way we add numbers. Instead, we use chemical reactions and equations to understand how elements and compounds interact and form new substances.
b. 2
c. 3
d. 4
a. specialized vascular tissue.
b. absorption alone.
c. absorption and transpiration.
d. osmosis and diffusion.
2-5 feet
10-20 feet
18-90 feet