Answer the following question given this paragraph: (left) The DNA double helix wraps around proteins (2) and tightly coils a number of times to form a chromosome (5). This figure shows the complexity of the coiling process. The red dot shows the location of the centromere, where the microtubules attach during mitosis and meiosis. (right) A representation of a condensed eukaryotic chromosome, as seen after the DNA has been copied. The chromosome is made of two identical, or sister, chromatids held together by a centromere. Q: What genetic unit is formed when the dna double helix wraps around proteins and tightly coils a number of times? Choices: - atom - gene - neutron - chromosome A:
chromosome
(Question)
Answer the following question given this paragraph: Atoms are indestructible and constantly in motion. Q: What are indestructible and constantly in motion? Choices: - viruses - crystals - ions - atoms A:
(Answer)
atoms
Ques: Answer the following question given this paragraph: Earthworms are deposit feeders. They burrow through the ground, eating soil and extracting organic matter from it. Earthworm feces, called worm casts, are very rich in plant nutrients. Earthworm burrows help aerate soil, which is also good for plants. Q: What type of feeders are earthworms? Choices: - middle - top - oil - deposit A:
Ans: deposit
(Q).
Answer the following question given this paragraph: Q: When light strikes the rods and cones, they hyperpolarize, shutting off their release of what? Choices: - enzyme - vitreous fluid - dopamine - glutamate A:
(A).
glutamate
Ques:Answer the following question given this paragraph: Weeks 1624 Once the respiratory bronchioles form, further development includes extensive vascularization, or the development of the blood vessels, as well as the formation of alveolar ducts and alveolar precursors. At about week 19, the respiratory bronchioles have formed. In addition, cells lining the respiratory structures begin to differentiate to form type I and type II pneumocytes. Once type II cells have differentiated, they begin to secrete small amounts of pulmonary surfactant. Around week 20, fetal breathing movements may begin. Q: Alveolar ducts and broncioles are developing parts of what organ system? Choices: - nervous - immune - digestive - respiratory A:

Ans:respiratory
Answer the following question given this paragraph: One dimensional motion describes objects moving in straight lines. Speed is a scalar measure of how quickly an object is moving along this line. Velocity is speed with a direction, making it a vector. If an object's velocity changes with time, the object is said to be accelerating. When restricted to one dimension, there are only two possible directions for the velocity and acceleration vectors to point in. As we'll see in the next chapters, understanding an object's acceleration is the key to understanding its motion. Q: What is the term for a scalar measure of how quickly an object is moving along this line? Choices: - velocity - motion - force - speed A:
speed