Q: Answer the following question given this paragraph: E XA MP L E 1 1. The most common carbon atoms have six protons and six neutrons in their nuclei. What are the atomic number and the mass number of these carbon atoms?. Q: The most common carbon atoms have six protons and six neutrons in their what? A:

OPTIONS:
- ribosomes
- neuron
- membrane
- nuclei

A: nuclei

input: OPTIONS:
- liquid exchange process
- helium exchange process
- transit exchange process
- gas exchange process Now, answer this question: Answer the following question given this paragraph: Reproduction Fungi reproduce sexually and/or asexually. Perfect fungi reproduce both sexually and asexually, while the so-called imperfect fungi reproduce only asexually (by mitosis). In both sexual and asexual reproduction, fungi produce spores that disperse from the parent organism by either floating on the wind or hitching a ride on an animal. Fungal spores are smaller and lighter than plant seeds. The giant puffball mushroom bursts open and releases trillions of spores. The huge number of spores released increases the likelihood of landing in an environment that will support growth (Figure 24.6). Q: What do all respiratory diseases affect? A:
A:
output: gas exchange process

Answer the following question given this paragraph: The density of matter can be calculated by dividing its mass by its volume. Q: How can you calculate the density of matter? A:

OPTIONS:
- by subtracting mass from volume
- by multiplying its mass by its volume
- by dividing its volume by its mass
- by dividing its mass by its volume

Answer: by dividing its mass by its volume

Problem: OPTIONS:
- association
- dissociation
- assimilation
- habituation
Q: Answer the following question given this paragraph: Habituation is learning to get used to something after being exposed to it for a while. Habituation usually involves getting used to something that is annoying or frightening, but not dangerous. Habituation is one of the simplest ways of learning. It occurs in just about every species of animal. Q: Learning to get used to something after being exposed to it for a while is associated with what kind of learning? A:
Answer: habituation

Problem:OPTIONS:
- carboniferous
- permian
- ordovician
- cambrian

Answer the following question given this paragraph: The first period of the Paleozoic Era was the Cambrian. By the beginning of the Paleozoic, organisms evolved shells. Shells could hold their soft tissues together. Shells could protect them from predators and from drying out. Some organisms evolved external skeletons. These are called exoskeletons . Organisms with hard parts also make good fossils. Fossils from the Cambrian are much more abundant than fossils from the Precambrian. Q: The first period of the paleozoic era was called what? A:
****
A: cambrian

Problem:OPTIONS:
- low thyroid levels
- high fat diets
- high serotonin levels
- low serotonin levels

Answer the following question given this paragraph: Some people have low levels of the neurotransmitter called serotonin in their brain. Scientists think that this is one cause of depression. Medications called antidepressants help bring serotonin levels back to normal. For many people with depression, antidepressants control the symptoms of their depression and help them lead happy, productive lives. Q: What according to scientists is the major cause of depression? A:
****
A:
low serotonin levels