Answer:
The correct answer is option D (the option you selected)
Explanation:
When ever any harmful bacteria invades the body, the immune cells recognize the harmful bacteria as antigen and starts building antibody against it. The macrophages shows the T-cells and B-cells, the parts of the pathogen against which the antibody has to be made.
I hope I'm right and good luck on your test :)
If meiosis doesn't take place then the fertilization does not take place !
if one fertilised the egg by any means , then the ploidy of the zygote will increase and there generates a lot of disease !
C . Cell wall because we don’t have a cell wall in us and we are considered animal cell.
Answer:
For involuntary actions (reflexes) the information is first detected in the sensor and travels along sensory neurons to the spinal cord. Once the action potential reaches the spinal cord, the information is transmitted across the synapse to the motor neuron. for voluntary actions,
movements are commanded by the motor cortex, the zone of the cerebrum located behind the frontal lobe. The motor cortex sends a neural message that moves through the brain stem along the spinal cord and into the neural network to the muscle being commanded.