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yaroslaw [1]
3 years ago
8

When the immune system attacks the body`s own cells, it produces an _________. disease.

Biology
1 answer:
diamong [38]3 years ago
4 0

Answer:

autoimmune

Explanation:

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12. In our somatic (body) cells, we have ___________ chromosomes, but in our sex cells (sperm & eggs), we have half the numb
Sliva [168]

Answer:

12. In our somatic (body) cells, we have 2N chromosomes, but in our sex cells (sperm & eggs), we have half the number of chromosomes, which is N chromosomes

Explanation:

5 0
3 years ago
Give two reasonsthat may account for the continuous firing of a<br> PostsynapticNeuron.
lyudmila [28]

Answer:

1.Continuous diffusion of negatively charged ions into the postsynaptic neurons , <u>which  leads to continuous reversal of charges (hyperpolarization) and therefore continuous firing of action potential</u>

2. Inhibition of hydrolytic enzymes e.g (acetycholinesterase)   that  metabolize activities of  cholinergic   neurotransmitters  e,g acetycholine at post synaptic cleft. leading to firing of action potential.

Explanation:

Neuron whose dendrites  transmits action potential to the  neuromuscular junction is called presynaptic neuron. While  neuron that  transmit action potential away from the neuronal synaptic junction, or from the neuromuscular  junction to the cell body of adjacent neuron or to effectors (gland and muscles) are called  post synaptic  neuron.

The more  negatively charged ions that diffused into the post synsptic neuron, the more depolarization, and the greater the frequency of action potential produced

The inhibition of  activities of hydrolytic enzyme which metabolize cholinergic neurotransmitter leads to  continuous   excitatory activities  of cholinergic neurotransmitters   on  the receptors at the postsynaptic neuron, and the more  action potential

6 0
3 years ago
Which term best describes the Animal Kingdom?
viva [34]
Multi-cellular Heterotrophs

Animals have more than one cell and can't produce their own food
5 0
3 years ago
Read 2 more answers
Buddhist monastic communities made two types of rock-cut halls; one was called the __________, used for the monks' living quarte
abruzzese [7]

Answer – Vihara; Chaitya

 

Buddhist monastic communities made two types of rock-cut halls; one was called the Vihara, used for the monks' living quarters, and the other was the Chaitya, which meant "sanctuary."

3 0
3 years ago
Why would a ecosystem that had a high species diversity be more productive and effective?
nydimaria [60]

Answer:

the higher the diversity, the higher the populations of all the

photosynthetic organisms

Explanation:

Diversity in plant allows random mating also known as panmixia. It allows plant have equal chances of being mated too by any among them creating variations in the population. It leads to less fixed gene, reduce genetic drift leading to an increases population as some lethal gene may be lost due to recombination of gene among individual plant.

Where there is no diversity some gene becomes fixed leading to perpetuation of some traits that may be harmful in a population but diversity allows for the generation of new gene and allele frequency within a population.

3 0
3 years ago
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