Explanation

Neurotransmitters are secreted by the neuron from the Axon ends (specifically, the axon terminals) 

Dendrite end:

Dendrites typically receive neurotransmitters at synapses, rather than secrete them 

Nissl granules:

These are clusters of rough endoplasmic reticulum and free ribosomes involved in protein synthesis within the neuron cell body and dendrites 

Cell body (soma):

This part contains the nucleus and other organelles, but is not the site of neurotransmitter secretion.

Explanation

Complementary base pairing in DNA ensures that when a DNA molecule is replicated, each new strand has the exact same sequence of bases as the original template strand.

This is because A always pairs with T, and C always pairs with G.

This specificity is crucial for maintaining the genetic information encoded in DNA, allowing it to serve as a blueprint for protein synthesis. 

Explanation

According to Lamarckism, "acquired characteristics" are traits developed by use or disuse. 

 Lamarck's theory proposed that organisms could develop traits during their lifetime based on how much they used or disused certain body parts, and these acquired traits would then be passed on to their offspring.

For example, a giraffe stretching its neck to reach leaves would develop a longer neck, and this longer neck would be inherited by its offspring. 

Explanation

According to the Lock and Key model, the active site is regarded as rigid and specific. 

The Lock and Key model portrays the active site of an enzyme as a fixed, precisely shaped structure that only matches a specific substrate molecule, like a key fitting into a lock

Explanation

The branch of biology that deals with the relations of organisms to one another and to their physical surroundings.

An ecosystem is the major unit of ecology, including both living organisms (biotic) and their physical environment (abiotic).

It shows interactions between organisms and their surroundings.

Explanation

Motor neurons stimulate muscles to contract in a reflex arc. 

Motor neurons:

These neurons carry signals from the central nervous system (CNS) directly to muscles, causing them to contract. 

Sensory neurons:

These neurons detect sensory information like pain or pressure and transmit it to the CNS. 

Interneurons:

These neurons connect sensory neurons to motor neurons within the spinal cord, facilitating the transmission of signals in a reflex arc. 

Afferent neurons:

This term is often used interchangeably with sensory neurons, as they both carry sensory information towards the central nervous system. 

Explanation

Eukaryotes divide by mitosis; prokaryotes by binary fission. 

Mitosis: This is the process of cell division in eukaryotic cells, where the nucleus divides into two separate nuclei, followed by the division of the cytoplasm.

Binary fission: This is a simpler process of cell division in prokaryotes, where the cell replicates its DNA and then divides into two identical daughter cells. 

Explanation

Glycogen is a highly branched polysaccharide, a large polymer made up of many repeating glucose units (monomers), which functions as a form of energy storage in animals

Explanation

Chemoreceptors detect chemical stimuli, and olfactory receptors are responsible for detecting smells, which are essentially chemicals in the air. 

Explanation

Uric acid is a less soluble form of nitrogenous waste that is excreted by organisms like birds, reptiles, and insects to conserve water.

This is particularly advantageous in arid environments where water is scarce.