Choose the correct answer. It is the life support structure that nourishes the cells with nutrients from the food you eat and oxygen from the air you breathe.

Choose the correct answer. What carries the materials throughout the body?

Choose the correct answer. What do you call the structure in the heart and some veins that prevents the blood from flowing backward?

Choose the correct answer. Among the following choices below, select the one that shows the correct order of blood flow.

Choose the correct answer. How would you best correlate a public utility vehicle with the functions of your blood?

Choose the correct answer. What will occur when the blood flow to a tissue of the heart is blocked by a blood clot?

Choose the correct answer. Which is the best way to prevent diseases of the respiratory and circulatory system?

Choose the correct answer. What is the main idea behind cigarette smoking?

Choose the correct answer. What alternative would you suggest to avoid circulatory diseases?

Choose the correct answer. What should you propose if someone you know sustained an open wound and whose blood do not clot naturally?

Choose the correct answer. It is a threadlike structure of nucleic acids and protein found in the nucleus of most living cells, carrying genetic information in the form of genes.

Choose the correct answer. The genetic information of an organism is stored in DNA molecules. How many paired DNA molecules are in a human body?

Choose the correct answer. What word is used to describe the exact position of a gene on a chromosome?

Choose the correct answer. What could be the outcome if something wrong happens with the chromosome of a child?

Choose the correct answer. In DNA, adenine pairs only with thymine and cytosine pairs only with guanine. If the left chain of a DNA molecule has the nucleotide sequence CCGTAGGCC, what is the sequence of the right chain of the DNA molecule?

Choose the correct answer. Hemophilia (characterized by slow clotting of the blood) is a sex-linked trait; a hereditary gene commonly found in the X chromosome. Suppose a non-bleeder or normal man married a carrier woman and had many children. Which of the following statements about their children maybe false?

Choose the correct answer. A homozygous tall man marries a heterozygous tall woman. If they have 4 children, what will their children look like, based on the results of Mendel’s experiment.

Suppose that a curly- haired man with genotype Cc marries a curly- haired woman with genotype Cc. The allele for curly hair (C) is dominant over the allele for straight hair (c). Using the Punnett square. What will be the hair type of their first offspring?

Suppose that a curly- haired man with genotype Cc marries a curly- haired woman with genotype Cc. The allele for curly hair (C) is dominant over the allele for straight hair (c). Using the Punnett square. What will be the percentage of them having a child with homozygous straight hair?

Suppose that a curly- haired man with genotype Cc marries a curly- haired woman with genotype Cc. The allele for curly hair (C) is dominant over the allele for straight hair (c). Using the Punnett square. Based on the given problem, what is the best advise you could tell the couple to increase their chances of having a child with straight hair?