Q: Answer the following question given this paragraph: A combination reaction makes a new substance from more than one reactant; a redox reaction rearranges electrons. Not all combination reactions are redox reactions, and not all redox reactions are combination reactions. Q: A redox reaction rearranges what subatomic particles? A:

OPTIONS:
- neutrons
- water molecules
- protons
- electrons

A: electrons

input: OPTIONS:
- cytoplasm
- chlorophyll
- cells
- seeds Now, answer this question: Answer the following question given this paragraph: Nonvascular plants lack seeds and vascular tissue. Q: Nonvascular plants lack vascular tissue and what? A:
A:
output: seeds

Answer the following question given this paragraph: Q: What facilitates the diffusion of ions across a membrane? A:

OPTIONS:
- photon channels
- ionic bonds
- passive transport
- ion channels

Answer: ion channels

Problem: OPTIONS:
- accretion bond
- functionality bond
- ambivalent bond
- covalent bond
Q: Answer the following question given this paragraph: Gilbert Lewis (1875-1946) proposed a third theory of acids and bases that is even more general than either the Arrhenius or Brnsted-Lowry theories. A Lewis acid is a substance that accepts a pair of electrons to form a covalent bond. A Lewis base is a substance that donates a pair of electrons to form a covalent bond. So, a Lewis acid-base reaction is represented by the transfer of a pair of electrons from a base to an acid. A hydrogen ion, which lacks any electrons, accepts a pair of electrons. It is an acid under both the Brnsted-Lowry and Lewis definitions. Ammonia consists of a nitrogen atom as the central atom with a lone pair of electrons. The reaction between ammonia and the hydrogen ion can be depicted as shown in the Figure below . Q: A lewis acid is a substance that accepts a pair of electrons to form what? A:
Answer: covalent bond

Problem:OPTIONS:
- a lake
- vegetation
- a mountain
- a depression

Answer the following question given this paragraph: On a contour map, a circle with inward hatches indicates a depression. Q: What topographic feature does a circle with inward hatches represent on a contour map? A:
****
A: a depression

Problem:OPTIONS:
- protoplanetary tissues
- aeroponics tissues
- cardiac tissues
- extraembryonic tissues

Answer the following question given this paragraph: organism's life cycle is as subject to the effects of evolutionary pressures as any other (although it is easy to concentrate our attentions on adult forms and behaviors). The study of these processes, known as embryology, is beyond our scope here, but we can outline a few common themes. If fertilized eggs develop outside of the body of the mother and without parental protection, these new organisms are highly vulnerable to predation. In such organisms, early embryonic development generally proceeds rapidly. The eggs are large and contain all of the nutrients required for development to proceed up to the point where the new organism can feed on its own. To facilitate such rapid development, the egg is essentially pre-organized, that is, it is highly asymmetric, with specific factors that can influence gene expression, either directly or indirectly, positioned in various regions of the egg (). Entry of the sperm (the male gamete), which itself is an inherently asymmetric process, can also lead to reorganization of the cytoplasm (SEP marks sperm entry point in the figure early frog development). Maternal and fertilization-driven asymmetries are stabilized by the rapid cycles of DNA replication and cell division, with growth being dependent upon the utilization of maternally supplied nutrients. As distinct cells are formed, they begin to become different from one another as i) they inherit different determinants, ii) the presence of these determinants leads to changes in gene expression, and iii) cells secrete and respond to different factors that drive their differentiation further into different cell types, with different behaviors based on differences in gene expression. On the other hand, in a number of organisms, and specifically mammals, embryonic development occurs within the mother, so there is no compelling need to stockpile nutrients within the egg and the rate of development is (generally) dramatically slower. In such developmental systems, it is not the asymmetries associated with the oocyte and... Q: In mammals, the cells on the exterior form the trophectoderm, which goes on to form what? A:
****
A:
extraembryonic tissues