Answer the following question given this paragraph: A lichen is a mutualistic relationship between a fungus and a photosynthetic organism. The other organism is usually a cyanobacterium or green alga. The fungus grows around the bacterial or algal cells. The fungus benefits from the constant supply of food produced by the photosynthesizer. The photosynthesizer benefits from the water and nutrients absorbed by the fungus. Figure below shows lichen growing on a rock. Q: The fungus benefits from the constant supply of food produced by what? Choices: - the host - the spermatophyte - the phytoflagellate - the photosynthesizer A:
the photosynthesizer
(Question)
Answer the following question given this paragraph: Figure 16.17 The body contains three types of muscle tissue: skeletal muscle, smooth muscle, and cardiac muscle. Notice that skeletal muscle cells are long and cylindrical, they have multiple nuclei, and the small, dark nuclei are pushed to the periphery of the cell. Smooth muscle cells are short, tapered at each end, and have only one nucleus each. Cardiac muscle cells are also cylindrical, but short. The cytoplasm may branch, and they have one or two nuclei in the center of the cell. (credit: modification of work by NCI, NIH; scale-bar data from Matt Russell). Q: Name the three types of muscle tissue. Choices: - cardiac, smooth, long - smooth, long, tight - skeletal, cardiac, long - skeletal, smooth, cardiac A:
(Answer)
skeletal, smooth, cardiac
Ques: Answer the following question given this paragraph: Q: Which outermost secondary xylem layers transport water? Choices: - the farthest - the oldest - the narrowest - the youngest A:
Ans: the youngest
(Q).
Answer the following question given this paragraph: Summary Each atom of an element contains the same number of protons, which is theatomic number (Z). Neutral atoms have the same number of electrons and protons. Atoms of an element that contain different numbers of neutrons are calledisotopes. Each isotope of a given element has the same atomic number but a different mass number (A), which is the sum of the numbers of protons and neutrons. The relative masses of atoms are reported using the atomic mass unit(amu), which is defined as one-twelfth of the mass of one atom of carbon-12, with 6 protons, 6 neutrons, and 6 electrons. The atomic mass of an element is the weighted average of the masses of the naturally occurring isotopes. When one or more electrons are added to or removed from an atom or molecule, a charged particle called an ion is produced, whose charge is indicated by a superscript after the symbol. Q: What do neutral atoms have the same number of? Choices: - toxins and protons - gases and protons - Measure and electrons - electrons and protons A:
(A).
electrons and protons
Ques:Answer the following question given this paragraph: Diffusion is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration. The difference in the concentrations of the molecules in the two areas is called the concentration gradient . Diffusion will continue until this gradient has been eliminated. Since diffusion moves materials from an area of higher concentration to the lower, it is described as moving solutes "down the concentration gradient. " The end result of diffusion is an equal concentration, or equilibrium , of molecules on both sides of the membrane. Q: What is the movement of molecules from an area of high concentration of the molecules to an area with a lower concentration? Choices: - absorption - condensation - secretion - diffusion A:

Ans:diffusion
Answer the following question given this paragraph: The positive sign of the force indicates the force is repulsive. This makes sense, because both objects have a positive charge. Q: When both objects have a positive charge what will the force be between them? Choices: - attractive - expressive - polar - repulsive A:
repulsive