input: OPTIONS:
- calcium
- membrane
- collagen
- cartilage Now, answer this question: Answer the following question given this paragraph: Cartilage Templates Bone is a replacement tissue; that is, it uses a model tissue on which to lay down its mineral matrix. For skeletal development, the most common template is cartilage. During fetal development, a framework is laid down that determines where bones will form. This framework is a flexible, semi-solid matrix produced by chondroblasts and consists of hyaluronic acid, chondroitin sulfate, collagen fibers, and water. As the matrix surrounds and isolates chondroblasts, they are called chondrocytes. Unlike most connective tissues, cartilage is avascular, meaning that it has no blood vessels supplying nutrients and removing metabolic wastes. All of these functions are carried on by diffusion through the matrix. This is why damaged cartilage does not repair itself as readily as most tissues do. Throughout fetal development and into childhood growth and development, bone forms on the cartilaginous matrix. By the time a fetus is born, most of the cartilage has been replaced with bone. Some additional cartilage will be replaced throughout childhood, and some cartilage remains in the adult skeleton. Q: For skeletal development, the most common template is what? A:
A:
output: cartilage

Answer the following question given this paragraph: Natural selection occurs when there are differences in fitness among members of a population. As a result, some individuals pass more genes to the next generation. This causes allele frequencies to change. Q: What occurs when there are differences in fitness among a population? A:

OPTIONS:
- evolution
- natural process
- natural change
- natural selection

Answer: natural selection

Problem: OPTIONS:
- gravity
- acceleration
- velocity
- torque
Q: Answer the following question given this paragraph: This same logic explains the behavior of gyroscopes. Figure 10.31 shows the two forces acting on a spinning gyroscope. The torque produced is perpendicular to the angular momentum, thus the direction of the torque is changed, but not its magnitude. The gyroscope precesses around a vertical axis, since the torque is always horizontal and perpendicular to L . If the gyroscope is not spinning, it acquires angular momentum in the direction of the torque ( L falling over just as we would expect. Q: If a gyroscope is not spinning, it acquires angular momentum in the direction of what? A:
Answer: torque

Problem:OPTIONS:
- proteins
- fat
- air
- water

Answer the following question given this paragraph: The fluoride ion is acting as a weak Brnsted-Lowry base. The hydroxide ion that is produced as a result of the above reaction makes the solution slightly basic. Salt hydrolysis is a reaction in which one of the ions from a salt reacts with water, forming either an acidic or basic solution. Q: Salt hydrolysis is a reaction in which one of the ions from a salt reacts with what? A:
****
A: water

Answer the following question given this paragraph: The Precambrian Supereon (4.6 billion544 million years ago) is the first major division of the geologic time scale. The first living cells may have evolved around 4 billion years ago. By 1 million years ago, the first multicellular eukaryotes had evolved. The Precambrian ended with the first of six mass extinctions that occurred during Earth's history. Q: The first living cells may have evolved around how long ago? A:
OPTIONS:
- 900,000 years
- 6 billion years
- 2.2 billion years
- 4 billion years
4 billion years

Answer the following question given this paragraph: Q: Many discrete characters are determined by a single gene locus with different alleles that produce distinct what? A:
OPTIONS:
- clusters
- phototypes
- subtypes
- phenotypes

Answer:
phenotypes