Answer the following question given this paragraph: Positive Feedback Positive feedback intensifies a change in the body's physiological condition rather than reversing it. A deviation from the normal range results in more change, and the system moves farther away from the normal range. Positive feedback in the body is normal only when there is a definite end point. Childbirth and the body's response to blood loss are two examples of positive feedback loops that are normal but are activated only when needed. Childbirth at full term is an example of a situation in which the maintenance of the existing body state is not desired. Enormous changes in the mother's body are required to expel the baby at the end of pregnancy. And the events of childbirth, once begun, must progress rapidly to a conclusion or the life of the mother and the baby are at risk. The extreme muscular work of labor and delivery are the result of a positive feedback system (Figure 1.11). Q: What type of feedback intensifies a change in the body's physiological condition rather than reversing it? A:

OPTIONS:
- negative feedback
- neutral feedback
- susceptible feedback
- positive feedback

Answer: positive feedback

Problem: OPTIONS:
- radiation
- replication
- natural selection
- mutation
Q: Answer the following question given this paragraph: Mutations are essential for evolution to occur because they increase genetic variation and the potential for individuals to differ. The majority of mutations are neutral in their effects on the organisms in which they occur. Beneficial mutations may become more common through natural selection. Harmful mutations may cause genetic disorders or cancer. Q: What phenomenon is essential in order for evolution to occur because it increases genetic variation and the potential for individuals to differ? A:
Answer: mutation

Problem:OPTIONS:
- sugars
- acids
- polymers
- fats

Answer the following question given this paragraph: There are two main types of fats, saturated and unsaturated. Q: Saturated and unsaturated are the two main kinds of what? A:
****
A: fats

Answer the following question given this paragraph: Lifecycle of Leukocytes Most leukocytes have a relatively short lifespan, typically measured in hours or days. Production of all leukocytes begins in the bone marrow under the influence of CSFs and interleukins. Secondary production and maturation of lymphocytes occurs in specific regions of lymphatic tissue known as germinal centers. Lymphocytes are fully capable of mitosis and may produce clones of cells with identical properties. This capacity enables an individual to maintain immunity throughout life to many threats that have been encountered in the past. Q: Characterized by a short lifespan, what begin with production in the bone marrow under the influence of csfs and interleukins? A:
OPTIONS:
- solutes
- pathogens
- erythrocytes
- leukocytes
leukocytes

Answer the following question given this paragraph: Nervous Tissues Nervous tissues are made of cells specialized to receive and transmit electrical impulses from specific areas of the body and to send them to specific locations in the body. The main cell of the nervous system is the neuron, illustrated in Figure. Q: What is the main type of cell in the nervous system called? A:
OPTIONS:
- sensory
- conduction
- axon
- neuron

Answer: neuron

input with options: Answer the following question given this paragraph: Food Chains. These two food chains represent complex systems in nature. They make the systems easier to understand. These are simple conceptual models. Models of very complex systems are often based on mathematical equations or computer simulations. Q: What kind of tool, often based on mathematical equations or computer simulations, helps us understand complex systems? A:
OPTIONS:
- levels
- planes
- panels
- models
output:
models