Answer the following question given this paragraph: A chemical reaction occurs when some substances change chemically to other substances. Chemical reactions are represented by chemical equations. Consider a simple chemical reaction, the burning of methane. In this reaction, methane (CH 4 ) combines with oxygen (O 2 ) in the air and produces carbon dioxide (CO 2 ) and water vapor (H 2 O). The reaction is represented by the following chemical equation:. Q: What are chemical reactions represented by? Choices: - liquid equations - nuclear equations - carbon equations - chemical equations A:
chemical equations
(Question)
Answer the following question given this paragraph: Each species has a characteristic number of chromosomes. Chromosomes are coiled structures made of DNA and proteins called histones ( Figure below ). Chromosomes are the form of the genetic material of a cell during cell division. See the "Chromosomes" section for additional information. Q: Each species has a characteristic number of what coiled structures made of dna and proteins? Choices: - genes - ribosomes - prokaryotes - chromosomes A:
(Answer)
chromosomes
Ques: Answer the following question given this paragraph: While the egg is developing, other changes are taking place in the uterus. It develops a thick lining that is full of tiny blood vessels. The lining prepares the uterus to receive a fertilized egg if fertilization actually takes place. Q: While the egg is developing, other changes are taking place in the uterus. it develops a thick lining that is full of what? Choices: - large arteries - white blood cells - amniotic fluid - tiny blood vessels A:
Ans: tiny blood vessels
(Q).
Answer the following question given this paragraph: Genetics is the branch of biology that focuses on heredity. The basics of heredity are similar for all organisms that reproduce sexually: the offspring receive one set of genetic material from one parent and the other set from the other parent. But are there aspects of genetics that are specific for humans? Let's find out. Q: What branch of biology focuses on heredity? Choices: - Epidemiology - ontology - semiotics - genetics A:
(A).
genetics
Ques:Answer the following question given this paragraph: The majority of human genes have two or more possible alleles. Differences in alleles account for the considerable genetic variation among people. In fact, most human genetic variation is the result of differences in individual DNA bases within alleles. Q: How many possible alleles do the majority of human genes have? Choices: - three or more - two or less - less than four - two or more A:

Ans:two or more
Question: Answer the following question given this paragraph: Q: Glycolysis oxidizes glucose to two molecules of pyruvate? Choices: - N/A - see below - N/A - see below - N/A - see below - glucose A:
Answer:
glucose