negative/positive feedback loops
Random
Stimulus
Bacteria or Viruses
homeostasis
100
What are negative and positive feedback loops?
What are negative and positive feedback loops?A negative feedback is the reversed of the stimulus in the subjects body A positive feedback is the incarceration of the stimulus in the subjects body.
100

Bacteria reproduce using this type of cell division.

What is Binary fission

100
What is stimulus and what is the response?
stimulus A change in your body. And the response is the action your body takes to fix it.
100

One disease caused by bacteria and one caused by viruses.

MRSA (bacteria) and COVID (virus)

100
What are the four parts of a feedback loop? A. Control center, Action potential, Hormone, Effector B. Sensor, Pituitary gland, Control center, Activator C. Stimulus, Sensor, Control center, Effector D. Stimulus, Effector, Neuron, Sensor
C is correct. In a feedback loop, a stimulus causes a change in homeostasis, and a sensor detects that change. The control center responds to the sensor and takes action, such as producing a hormone. The effector organs are the target of the feedback loop and respond to the stimulus
200
positive feedback because the pheromones aren't being stop their being allowed to ripen the apples. determine the feedback type. A ripe apple on a tree produces the Pheromones to help it grow . This pheromones cause the surrounding apples to ripen, and then it goes until all of the apples on the tree are ripe
positive feedback because the pheromones aren't being stop their being allowed to ripen the apples.
200

These small genetic changes help viruses and bacteria adapt to survive treatments like antibiotics or vaccines.

What are mutations

200
Tamara normally feeds her cat canned cat food. She noticed that every time she uses her electric can opener, her cat comes to the kitchen. What is the conditioned stimulus? A) the cat food B) the sound of the electric can opener C) the cat coming to the kitchen D) Tamara
c the sound of the can opener
200

This type of genetic material can be found in viruses and bacteria.

What is DNA or RNA

200

This term describes the body’s ability to maintain a stable internal environment.

What is homeostasis

300
Another example of feedback is seen in childbirth, where stretching of the uterus triggers the secretion of a hormone , oxytocin, which stimulates uterine contractions and speeds up labor. A. This is a positive feedback loop B. This is a negative feedback loop C. This is not a feedback loop
This is a positive feedback loop
300

When infection is detected, the immune system mobilizes more of these cells from bone marrow.

What are white blood cells.

300
When a child hears a loud noise, he cries. The family's dog often barks loudly. Each time the child sees the dog, he cries. What is the conditioned response? A) the dog B) the loud noise C) the crying D) the barking
b the loud noises
300

Viruses are considered this because they cannot reproduce on their own.

What is non living

300
An example of feedback is body temperature regulation. If blood temperature rises too high, this is sensed by specialized neurons in the hypothalamus of the brain. They signal other nerve centers, which in turn send signals to the blood vessels of the skin. As these blood vessels dilate, more blood flows close to the body surface and excess heat radiates from the body. If this is not enough to cool the body back to its set point, the brain activates sweating. Evaporation of sweat from the skin has a strong cooling effect, as we feel when we are sweaty and stand in front of a fan. A. This is a positive feedback loop B. This is a negative feedback loop C. This is not a feedback loop
This is a negative feedback loop
400
An example of feedback is body temperature regulation. If blood temperature rises too high, this is sensed by specialized neurons in the hypothalamus of the brain. They signal other nerve centers, which in turn send signals to the blood vessels of the skin. As these blood vessels dilate, more blood flows close to the body surface and excess heat radiates from the body. If this is not enough to cool the body back to its set point, the brain activates sweating. Evaporation of sweat from the skin has a strong cooling effect, as we feel when we are sweaty and stand in front of a fan. A. This is a positive feedback loop B. This is a negative feedback loop C. This is not a feedback loop
This is a negative feedback loop
400

Explain why negative feedback is important for survival.

What is because it keeps internal conditions stable and prevents harmful changes?

400
bill has a fever and temperature of 102.gF, his body sends a signal to his brain to fight back the sickness, your immune system makes proteins called antibodies that destroy abnormal or foreign cells. They help fend off the cold, bill feels fine after a day and his temperature back to normal what is the stimulus?
the stimulus is his temperature reach 102.6F and that is above normal
400

These drugs can kill or stop the growth of bacteria.

what is Anti-biotics

400

When your body gets hot during exercise, it releases this to cool you down.

What is sweat 

500

Which is NOT an example of positive feedback? A. Contractions during childbirth B. An increase in hormones like LH before ovulation C. Lowering blood pressure if it is elevated D. Conversion of pepsinogen into pepsin

C is correct. If blood pressure becomes raised, signals from the brain will affect the heart and cause it to slow down, which returns the blood pressure to normal. This is the opposite effect as raising the blood pressure; that action is stopped and reversed. Lowering blood pressure when it is elevated is an example of negative feedback.

500

These blood cells fight both bacterial and viral infections.

What is white blood cells.

500
Robert had a serious car accident while Mozart was playing on his stereo. Now, every time Robert hears a Mozart song, he feels frightened and panicked. What is the unconditioned stimulus? A) the car accident B) Robert's fear and anxiety C) music by Mozart D) driving a car
A the mozart
500

Overuse of antibiotics can lead to this problem.

What is Antibiotic resistance

500

When you are cold, your muscles do this involuntary movement to produce heat.

What is Shiver.
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