<h3><u>Answer and Explanation</u>;</h3>
- Purines: Heterocyclic rings are synthesized one atom at a time, first atom attached to ribose phosphate (source is PRPP) and then all the other atoms are added .
- Pyrimidines: Common intermediate, orotate, synthesized first, then orotate is attached to ribose phosphate (source is PRPP or 5-Phosphoribosyl-1-pyrophosphate).
Answer:
The stored energy in the wood is chemical energy, meaning that it can be released by a chemical reaction (burning). It's closely related to those fossil fuel energies, because the chemical energy was formed by photosynthesis, using energy from sunlight as the input.
Explanation:
The correct answer is letter a. herbivores feed on low-lying plants. Organisms that live in the rainforest have developed unique adaptations that aid in their survival just like <span>herbivores feed on low-lying.</span>
Here are the choices
<span>a.
herbivores feed on low-lying plants
b.
birds have beaks adapted to break open hard shells
c.
insects have a widely-varied diet
d.
plants are able to store water in their leaves</span>
The appropriate answer is c. a scientific journal. A scientific journal is a collection of papers based on topics in science that have been written by experts in their fields. Individuals with a masters or doctorate in various subject areas are published here.
From the list given this is the best second source for the research. Science fiction novels and not real and so would be unacceptable. Magazines and news papers reporting on scientific research most likely get information from scientific journals.
Answer:
A) AFP binds to ice crystals and forms a nonpolar shell that prevents covalent bonding between water molecules to form a larger crystal. By limiting crystal growth, the cell would not freeze solid
Explanation:
Water is a "polar" molecule, which means that electron density is unevenly distributed. Water has a partial negative charge, near the atom of oxygen due to the unshared pairs of electrons and partial positive charges, near the atoms of hydrogen. Because water is polar and the protein is nonpolar, their molecules are not attracted to each other this is want prevents the ice crystals from forming.
