Answer the following question given this paragraph: Muscle tissue consists of cells that can contract, or shorten. Examples include skeletal muscle, which is attached to bones and makes them move. Other types of muscle include cardiac muscle, which makes the heart beat, and smooth muscle, which is found in other internal organs. Q: What kind of muscle is responsible for making the human heart beat? Choices: - deltoid - teres minor - respiratory muscle - cardiac muscle A:
cardiac muscle
Answer the following question given this paragraph: An ion is an atom or group of bonded atoms that has a positive or negative charge. Ions are formed when an atom gains or loses electrons from its valence shell ( Figure below ). This process causes an imbalance between the number of positively charged protons and negatively charged electrons, so the overall ion will carry a net positive or negative charge. Q: What is an atom or group of bonded atoms that has a positive or negative charge? Choices: - an photon - an electron - a neutron - an ion A:
an ion
Q: Answer the following question given this paragraph: Q: Branching food chains and complex trophic interactions form what? Choices: - food fields - food maps - food trees - food webs A:
A: food webs
Question: Answer the following question given this paragraph: The strong nuclear force works only over very short distances. As a result, it isn't effective if the nucleus gets too big. As more protons are added to the nucleus, the electromagnetic force of repulsion between them gets stronger, while the strong nuclear force of attraction between them gets weaker. This puts an upper limit on the number of protons an atom can have and remain stable. If atoms have more than 83 protons, the electromagnetic repulsion between them is greater than the strong nuclear force of attraction between them. This makes the nucleus unstable, or radioactive, so it breaks down. The following video discusses the strong nuclear force and its role in the atom. The video also introduces the weak nuclear force, which is described next. Q: If the electromagnetic repulsion between protons is greater than the strong nuclear force of attraction between them, what do they become? Choices: - unstable , or experimental - slow , or radioactive - destroyed - unstable, or radioactive A:
Answer: unstable, or radioactive
*Question*
Answer the following question given this paragraph: Cooperation between Bacteria and Eukaryotes: Nitrogen Fixation Nitrogen is a very important element to living things, because it is part of nucleotides and amino acids that are the building blocks of nucleic acids and proteins, respectively. Nitrogen is usually the most limiting element in terrestrial ecosystems, with atmospheric nitrogen, N2, providing the largest pool of available nitrogen. However, eukaryotes cannot use atmospheric, gaseous nitrogen to synthesize macromolecules. Fortunately, nitrogen can be "fixed," meaning it is converted into ammonia (NH3) either biologically or abiotically. Abiotic nitrogen fixation occurs as a result of lightning or by industrial processes. Biological nitrogen fixation (BNF) is exclusively carried out by prokaryotes: soil bacteria, cyanobacteria, and Frankia spp. (filamentous bacteria interacting with actinorhizal plants such as alder, bayberry, and sweet fern). After photosynthesis, BNF is the second most important biological process on Earth. The equation representing the process is as follows. Q: Nitrogen is a very important element to living things, because it is part of nucleotides and amino acids that are the building blocks of nucleic acids and these? Choices: - cells - lipids - follicles - proteins A:
**Answer**
proteins
(Q).
Answer the following question given this paragraph: Blue cheese is blue because of the fungus growing throughout it. Q: What color is the fungus in blue cheese? Choices: - green - purple - pink - blue A:
(A).
blue