Answer the following question given this paragraph: Q: Cytoplasmic determinants are distributed how in unfertilized eggs? Choices: - evenly - from left to right - symmetrically - unevenly A:
unevenly
(Question)
Answer the following question given this paragraph: Figure 36.20 When light strikes rhodopsin, the G-protein transducin is activated, which in turn activates phosphodiesterase. Phosphodiesterase converts cGMP to GMP, thereby closing sodium channels. As a result, the membrane becomes hyperpolarized. The hyperpolarized membrane does not release glutamate to the bipolar cell. Q: When light strikes rhodopsin, the g-protein transducin is activated, which in turn activates what? Choices: - aldosterone - photosynthesis - hydrolysis - phosphodiesterase A:
(Answer)
phosphodiesterase
Ques: Answer the following question given this paragraph: Surface mining exposes minerals that were underground to air and water at the surface. These minerals contain the chemical element sulfur. Sulfur mixes with air and water to make sulfuric acid. This acid is a highly corrosive chemical. Sulfuric acid gets into nearby streams and can kill fish, plants, and animals. Surface mining is safer for the miners. Q: What is corrosive mixture is formulated by the combination of water, air and sulfur? Choices: - nitric acid - sulfuric water - hydrochloric acid - sulfuric acid A:
Ans: sulfuric acid
(Q).
Answer the following question given this paragraph: Group 16 of the periodic table is also called the oxygen group. The first three elementsoxygen (O), sulfur (S), and selenium (Se)are nonmetals. They are followed by tellurium (Te) ( Figure below ), a metalloid, and polonium (Po), a metal. All group 16 elements have six valence electrons and are very reactive. Oxygen is a gas at room temperature, and the other elements in the group are solids. Q: What is group 16 of the periodic table referred to? Choices: - sulfur group - dioxide group - acid group - oxygen group A:
(A).
oxygen group
Ques:Answer the following question given this paragraph: In some places, the oceanic crust comes up to a continent. The moving crust pushes that continent away from the ridge axis as well. If the moving oceanic crust reaches a deep sea trench, the crust sinks into the mantle. The creation and destruction of oceanic crust is the reason that continents move. Q: The creation and destruction of oceanic crust is the reason what moves? Choices: - animals - planets - oceans - continents A:

Ans:continents
Question: Answer the following question given this paragraph: Tropomyosin is a protein that winds around the chains of the actin filament and covers the myosin-binding sites to prevent actin from binding to myosin. Tropomyosin binds to troponin to form a troponin-tropomyosin complex. The troponintropomyosin complex prevents the myosin "heads" from binding to the active sites on the actin microfilaments. Troponin also has a binding site for Ca++ ions. To initiate muscle contraction, tropomyosin has to expose the myosin-binding site on an actin filament to allow cross-bridge formation between the actin and myosin microfilaments. The first step in the process of contraction is for Ca++ to bind to troponin so that tropomyosin can slide away from the binding sites on the actin strands. This allows the myosin heads to bind to these exposed binding sites and form cross-bridges. The thin filaments are then pulled by the myosin heads to slide past the thick filaments toward the center of the sarcomere. But each head can only pull a very short distance before it has reached its limit and must be "re-cocked" before it can pull again, a step that requires ATP. Q: Tropomyosin is a type of what, that winds around the chains of the actin filament and covers the myosin-binding sites to prevent actin from binding to myosin? Choices: - enzyme - bacteria - amine - protein A:
Answer:
protein