Answer the following question given this paragraph: Q: Which stage of development is a period during which apoptosis is widespread and plays a crucial role? Choices: - puberty - transgenic - infancy - embryonic A:
embryonic
(Question)
Answer the following question given this paragraph: When water moves into a cell by osmosis, osmotic pressure may build up inside the cell. If a cell has a cell wall, the wall helps maintain the cell's water balance. Osmotic pressure is the main cause of support in many plants. When a plant cell is in a hypotonic environment, the osmotic entry of water raises the turgor pressure exerted against the cell wall until the pressure prevents more water from coming into the cell. At this point the plant cell is turgid ( Figure below ). The effects of osmotic pressures on plant cells are shown in Figure above . Q: What type of pressure may build up inside the cell when water moves into a cell by osmosis? Choices: - pleasurable pressure - impervious pressure - transverse pressure - osmotic pressure A:
(Answer)
osmotic pressure
Ques: Answer the following question given this paragraph: Figure 42.21 The spleen is similar to a lymph node but is much larger and filters blood instead of lymph. Blood enters the spleen through arteries and exits through veins. The spleen contains two types of tissue: red pulp and white pulp. Red pulp consists of cavities that store blood. Within the red pulp, damaged red blood cells are removed and replaced by new ones. White pulp is rich in lymphocytes that remove antigen-coated bacteria from the blood. (credit: modification of work by NCI). Q: What organ is similar to a lymph node but is much larger and filters blood instead of lymph? Choices: - kidney - liver - bone - spleen A:
Ans: spleen
(Q).
Answer the following question given this paragraph: The kinetic theory of gases describes this state of matter as composed of tiny particles in constant motion with a lot of distance between the particles. This model of gases explains some of the physical properties of gases. Because most of a gas is empty space, a gas has a low density and can expand or contract under the appropriate influence. The fact that gas particles are in constant motion means that two or more gases will always mix, as the particles from the individual gases move and collide with each other. An ideal gas is a gas that exactly follows the statements of the kinetic theory. Unfortunately, real gases are not ideal. Many gases deviate slightly from agreeing perfectly with the kinetic theory of gases. However, most gases adhere to the statements so well that the kinetic theory of gases is well accepted by the scientific community. Q: What theory of gases describes this state of matter as composed of tiny particles in constant motion with a lot of distance between the particles? Choices: - magnetic - thermal - optical - kinetic A:
(A).
kinetic
Ques:Answer the following question given this paragraph: Scientists think that Europa is a good place to look for extraterrestrial life. Europa is the smallest of the Galilean moons. The moon's surface is a smooth layer of ice. Scientists think that the ice may sit on top of an ocean of liquid water. How could Europa have liquid water when it is so far from the Sun? Europa is heated by Jupiter. Jupiter's tidal forces are so great that they stretch and squash its moon. This could produce enough heat for there to be liquid water. Numerous missions have been planned to explore Europa, including plans to drill through the ice and send a probe into the ocean. However, no such mission has yet been attempted. Q: What is the smallest of the galilean moons? Choices: - phoebe - demos - aura - europa A:

Ans:europa
Answer the following question given this paragraph: Keeping the rate of metabolism high takes a constant and plentiful supply of oxygen. That's because cellular respiration, which produces energy, requires oxygen. The lungs and heart of mammals are adapted to meet their oxygen needs. Q: A constant and plentiful supply of oxygen is required in order to maintain a high rate of what? Choices: - digestion - cell division - magnesium - metabolism A:
metabolism