Answer the following question given this paragraph: Speed represents how quickly an object is moving through space. Velocity is speed with a direction, making it a vector quantity. If an object's velocity changes with time, the object is said to be accelerating. As we'll see in the next chapters, understanding the acceleration of an object is the key to understanding its motion. We will assume constant acceleration throughout this chapter. Q: What is the name for speed with a direction? Choices: - distance - acceleration - trajectory - velocity A:
velocity
(Question)
Answer the following question given this paragraph: Dwarf galaxies are small galaxies containing "only" a few million to a few billion stars. Most dwarf galaxies are irregular in shape. However, there are also dwarf elliptical galaxies and dwarf spiral galaxies . Dwarf galaxies are the most common type in the Universe. However, because they are relatively small and dim, we don't see as many dwarf galaxies as we do their full-sized cousins. Q: Smaller sized galaxies are known as what? Choices: - nebula - black holes - constellations - dwarf galaxies A:
(Answer)
dwarf galaxies
Ques: Answer the following question given this paragraph: Q: What does the inner membrane divide into two internal compartments? Choices: - chitin - epidermis - golgi apparatus - mitochondrion A:
Ans: mitochondrion
(Q).
Answer the following question given this paragraph: Homologous chromosomes move toward opposite poles of a dividing cell during. Q: Homologous chromosomes move toward what poles? Choices: - interior - parallel - octogonal - opposite A:
(A).
opposite
Ques:Answer the following question given this paragraph: Chapter 2 1 Figure 2.3 Carbon-12 has six neutrons. Carbon-13 has seven neutrons. 3 Figure 2.24 C 4 A 6 C 8 D 10 C 12 D 14 Ionic bonds are created between ions. The electrons are not shared between the atoms, but rather are associated more with one ion than the other. Ionic bonds are strong bonds, but are weaker than covalent bonds, meaning it takes less energy to break an ionic bond compared with a covalent one. 16 Buffers absorb the free hydrogen ions and hydroxide ions that result from chemical reactions. Because they can bond these ions, they prevent increases or decreases in pH. An example of a buffer system is the bicarbonate system in the human body. This system is able to absorb hydrogen and hydroxide ions to prevent changes in pH and keep cells functioning properly. 18 Carbon is unique and found in all living things because it can form up to four covalent bonds between atoms or molecules. These can be nonpolar or polar covalent bonds, and they allow for the formation of long chains of carbon molecules that combine to form proteins and DNA. Q: What is unique and found in all living things because it can form up to four covalent bonds between atoms or molecules? Choices: - hydrogen - oxygen - potassium - carbon A:

Ans:carbon
Answer the following question given this paragraph: Alkaliphiles are organisms that "love" bases. Bases are like the opposite of acids. Basic environments where archaeans are found include Mono Lake in California, pictured in Figure below . Mono Lake is the oldest lake in North America. The water is not only unusually basic. It's also saltier than the ocean. So archaeans that live in the water of Mono Lake must have adaptations to both salty and basic conditions. They are haloalkaliphiles. Q: What is the term for organisms that have adaptations to both salty and basic conditions? Choices: - salinophytes - sporozoans - heterophiles - haloalkaliphiles A:
haloalkaliphiles