Answer the following question given this paragraph: Fusion is the process in which two atomic nuclei fuse together to make a single nucleus. Energy is released in the form of nuclear particles, neutrons, and gamma-rays. Q: What is the term for the process in which two atomic nuclei fuse together to make a single nucleus? Choices: - absorption - fission - binding - fusion A:
fusion
(Question)
Answer the following question given this paragraph: The chloroplast is the site of photosynthesis. Part of the photosynthesis reactions occur in an internal membrane within the organelle. Many of the pigments and other molecules necessary for photosynthesis are embedded within these internal membranes, The chloroplast contains many of these internal membranes, allowing numerous photosynthetic reactions to occur simultaneously, and making photosynthesis very efficient. These internal membranes stack on top of each other, just like a stack of pancakes. Q: Where is the site of photosynthesis? Choices: - another chloroplast - the chloroburst - the organism - the chloroplast A:
(Answer)
the chloroplast
Ques: Answer the following question given this paragraph: In general, for an electric charge to move from one position to another, there must be a difference in electric potential energy between the two positions. The difference in electric potential energy is called potential difference, or voltage . Voltage is measured in an SI unit called the volt (V). For example, the terminals of the car battery in Figure below have a potential difference of 12 volts. This difference in voltage results in a spontaneous flow of charges, or electric current. Q: The difference in electric potential energy which allows for an electric charge to move from one position to another is measured by what si unit? Choices: - ohm - joule - meter - volt A:
Ans: volt
(Q).
Answer the following question given this paragraph: The phylum Annelida is made up of segmented worms such as earthworms . Segmented worms are divided into many repeating segments. There are roughly 15,000 species of annelids. Most belong to one of three classes. A species in each class is pictured in Figure below . See The Cambrian Explosion at http://www. pbs. org/kcet/shapeoflife/episodes/explosion. html for an introduction to annelids. Q: Earthworms and segmented worms belong to what phylum? Choices: - bryozoa - nematoda - protazoa - annelida A:
(A).
annelida
Ques:Answer the following question given this paragraph: are attached to the end of each bronchiole. At the end of each duct are approximately 100 alveolar sacs, each containing 20 to 30 alveoli that are 200 to 300 microns in diameter. Gas exchange occurs only in alveoli. Alveoli are made of thin-walled parenchymal cells, typically one-cell thick, that look like tiny bubbles within the sacs. Alveoli are in direct contact with capillaries (one-cell thick) of the circulatory system. Such intimate contact ensures that oxygen will diffuse from alveoli into the blood and be distributed to the cells of the body. In addition, the carbon dioxide that was produced by cells as a waste product will diffuse from the blood into alveoli to be exhaled. The anatomical arrangement of capillaries and alveoli emphasizes the structural and functional relationship of the respiratory and circulatory systems. Because there are so many alveoli (~300 million per lung) within each alveolar sac and so many sacs at the end of each alveolar duct, the lungs have a sponge-like consistency. This organization produces a very large surface area that is available for gas exchange. The surface area of alveoli in the lungs is approximately 75 m2. This large surface area, combined with the thin-walled nature of the alveolar parenchymal cells, allows gases to easily diffuse across the cells. Q: The anatomical arrangement of capillaries and alveoli emphasizes the structural and functional relationship of what systems? Choices: - nervous and lymphatic - digestive and respiratory - endocrine and renal - respiratory and circulatory A:

Ans:respiratory and circulatory
Ques: Answer the following question given this paragraph: Mammalian Systems In mammals, pulmonary ventilation occurs via inhalation (breathing). During inhalation, air enters the body through the nasal cavity located just inside the nose (Figure 39.7). As air passes through the nasal cavity, the air is warmed to body temperature and humidified. The respiratory tract is coated with mucus to seal the tissues from direct contact with air. Mucus is high in water. As air crosses these surfaces of the mucous membranes, it picks up water. These processes help equilibrate the air to the body conditions, reducing any damage that cold, dry air can cause. Particulate matter that is floating in the air is removed in the nasal passages via mucus and cilia. The processes of warming, humidifying, and removing particles are important protective mechanisms that prevent damage to the trachea and lungs. Thus, inhalation serves several purposes in addition to bringing oxygen into the respiratory system. Q: Pulmonary ventilation in mammals occurs via what? Choices: - inflammation - osmosis - ingestion - inhalation A:
Ans:
inhalation