Which of the following are used to determine a person’s DNA sequence?

A. Sodium bicarbonate inhibits peristalsis

B. Sodium bicarbonate is a protease that digests carbohydrates

C. Sodium bicarbonate stimulates the pyloric sphincter

D. Sodium bicarbonate neutralizes the acidity of chyme

Sodium bicarbonate is an alkaline solution, which is released by the pancreas. Chyme is acidic coming from the stomach is neutralized by sodium bicarbonate to protect the duodenum. 

A. Cellular DNA has sequences related to viral sequences

B. Cancerous and normal cells share genetic sequences

C. Genes that regulate cell division are found in some viruses

D. Viruses and cancer cells both replicate rapidly

Cancer is a condition caused by unregulated division of abnormal cells in parts of the body. For a virus to survive in an organism, it must enter into the host’s cell and take control of the cell’s most activities in order to be able to reproduce and replicate.

Some of the viruses achieve this by inserting their DNA or RNA to that of the host cell. This has a highly likelihood of affecting the DNA or RNA of a host (living organism) which alters their genes, which may lead to host cells becoming cancerous.

For this reason, viruses can cause cancer because the genes that regulate cell division in host cell are found in some viruses.

A. Resonance bonds

B. Ionic bonds

C. Triple covalent bonds

D. Hydrogen bonds

The Lewis structure of nitrogen gas is shown below. Triple bonds are stronger than double or single bonds. Therefore, we can infer that the triple bond between the two nitrogen atoms makes nitrogen gas more stable.

A. Ingestion

B. Mechanical digestion

C. Chemical digestion

D. All of the above

All of these processes occur in the mouth. Ingestion involves taking food into the mouth, mechanical digestion includes the physical breakdown of food through chewing and mixing with saliva, and chemical digestion begins with the action of enzymes in saliva, such as amylase, which starts to break down carbohydrates.

A. Genes

B. Enzymes

C. Hormones

D. Blood types

A gene is the basic physical and functional unit of heredity and it is the DNA that make up genes. Enzymes are biological catalysts that speed up metabolic and cellular reactions in our bodies. Hormones are responsible for controlling the action of certain cells or organs in our bodies. Blood types are of four types, A, B, AB, and O.

A. 4 red, 0 white

B. 2 red, 2 white

C. 1 red, 3 white

D. 3 red, 1 white

We use the Punnet square to find the population of the resulting offspring from the crossing of a plant heterozygous for red flowers with a plant with white flowers.

Let R be the dominant allele for red while r is the recessive allele color for red. Therefore, the phenotype for parent 1 which is heterozygous for red flower will be Rr and the second parent with white flowers will be rr.

We cross the two phenotypes in a Punnet square as follows

Thus, there are 2 heterozygous offspring with red flowers and 2 offspring with white flowers.

A. mouth

B. salivary glands

C. pancreas

D. liver

Accessory organs of the digestive system comprise of organs that empty secretions into the alimentary canal. These organs include salivary glands, liver, gallbladder and pancreas. The mount if path of the alimentary canal.

A. Inferior vena cava

B. Pulmonary vein

C. Pulmonary artery

D. Superior vena cava

Pulmonary vein carries oxygenated blood from the lungs to the heart. Pulmonary artery carries deoxygenated blood from the heart to the lungs.
Superior and inferior vena cava bring in deoxygenated blood from all other parts of the body to the heart.

A. AA

B. Aa

C. aA

D. aa

From the given Punnett square, we can cross the genotypes of the two parents and established the phenotypes the offspring will have. The Punnett square is filled as:

The requested answer is aa.

A. 20

B. 17

C. 10

D. 14