Q: Answer the following question given this paragraph: Of course, calcium is critical for many other biological processes. It is a second messenger in many signaling pathways, and is essential for muscle contraction, nerve impulse transmission, and blood clotting. Given these roles, it is not surprising that blood calcium levels are tightly regulated by the endocrine system. The organs involved in the regulation are the parathyroid glands. Q: Blood calcium levels are tightly regulated by the what system? A:

OPTIONS:
- digestive
- cardiovascular
- nervous
- endocrine

A: endocrine

input: OPTIONS:
- neutrons
- calories
- ions
- atoms Now, answer this question: Answer the following question given this paragraph: The basic unit of matter is an atom . At the center of an atom is its nucleus . Protons are positively charged particles in the nucleus. Also in the nucleus are neutrons with no electrical charge. Orbiting the nucleus are tiny electrons. Electrons are negatively charged. An atom with the same number of protons and electrons is electrically neutral. If the atom has more or less electrons to protons it is called an ion . An ion will have positive charge if it has more protons than electrons. It will have negative charge if it has more electrons than protons. Q: What is the basic unit of matter? A:
A:
output: atoms

Answer the following question given this paragraph: The dermis also contains hair follicles and two types of glands. You can see some of these structures in Figure below . Q: How many types of glands does the dermis contain? A:

OPTIONS:
- three
- ten
- six
- two

Answer: two

Problem: OPTIONS:
- food
- ants
- glass
- fruit
Q: Answer the following question given this paragraph: Angiosperm success is a result of two novel structures that ensure reproductive success: flowers and fruit. Flowers allowed plants to form cooperative evolutionary relationships with animals, in particular insects, to disperse their pollen to female gametophytes in a highly targeted way. Fruit protect the developing embryo and serve as an agent of dispersal. Different structures on fruit reflect the dispersal strategies that help with the spreading of seeds. Q: Angiosperm success is a result of two novel structures that ensure reproductive success: flowers and this? A:
Answer: fruit

Problem:OPTIONS:
- voltage
- wavelength
- frequency
- amplitude

Answer the following question given this paragraph: Amplitude is a measure of the size of sound waves. It depends on the amount of energy that started the waves. Greater amplitude waves have more energy and greater intensity, so they sound louder. For a video demonstration of the amplitude and loudness of sounds, go to this URL: http://www. youtube. com/watch?v=irqfGYD2UKw. Q: What is a measure of the size of sound waves? A:
****
A: amplitude

Problem:OPTIONS:
- carbon rain
- produce rain
- Hot Rain
- acid rain

Answer the following question given this paragraph: Acid rain is rain that has a pH less than 5 ( Figure below ). Acidity is measured on the pH scale . Lower numbers are more acidic, and higher numbers are less acidic (also called more alkaline ). An acid has a pH of less than 7. The pH of normal rain is 5.6. It's slightly acidic because carbon dioxide in the air dissolves in rain. This forms carbonic acid, a weak acid. Q: What is the term for rain consisting of water with a ph below 5? A:
****
A:
acid rain