DCP #2 Review

How do the circulatory and immune systems work together to respond to an injury?

• Increased blood flow kills healthy cells which prevents infection at the site of the injury.

• Increased blood flow removes infected cells from the body at the site of the injury.

• Increased blood flow carries white blood cells to the site of the injury.

• Increased blood flow allows for an increase in the exchange of O₂ and CO₂ at the site of the injury.

The diagram above shows how specialized body cells can develop. Which of the following best explains why cells that contain the same genetic material do not develop into the same types of cells?

• Because internal or external stimuli can trigger the activation of specific genes in the DNA of the cells.

• Because random mutations can occur in the DNA of cells during early embryonic development.

• Because messenger RNA is converted to transfer RNA when cell differentiation begins.

• Because chemical signals that are released during the cell cycle can result in the linking of similar genes.

Which body systems must directly interact for vertebrate organisms to exchange gases?

• Skeletal and muscular systems

• Excretory and reproductive systems

• Circulatory and respiratory systems

• Digestive and immune systems

Which table shows two steps of DNA replication?

• 
• 
• 
• 

Which four body systems interact to allow a person to sneeze?

• Muscular, immune, nervous, respiratory

• Nervous, respiratory, circulatory, skeletal

• Respiratory, endocrine, skeletal, circulatory

• Lymphatic, skeletal, respiratory, muscular

Exposure to the building material asbestos has been linked to certain types of cancers. Asbestos causes mutations in the p453 gene, which controls tumor suppression.

Which statement best explains why people with cancer due to asbestos do not pass the mutation on to their offspring?

• The mutation occurred in gametic cells.

• The mutation occurred in somatic cells.

• The mutation is recessive.

• The mutation is sex-linked,

A student is looking for evidence that spindle fibers are separating the chromosomes to ensure that each new nucleus has one copy of each chromosome. Which cell is in the phase of mitosis that the student is searching for?

• A

• B

• C

• D

The female reproductive and endocrine systems work interactively for which main purpose?

• To maintain homeostasis by removing waste products from the body.

• To release neurotransmitters during times of stress.

• To control hormone levels to prepare the body for pregnancy.

• To exchange gases to support cellular aerobic respiration.

Students are modeling mRNA during the process of protein synthesis. Which answer choice correctly describes the model of the mRNA strand being transcribed?

• The mRNA strand is complementary to the DNA template; however, uracil instead of adenine is paired with thymine.

• The mRNA strand is complementary to the DNA template strand; however, uracil instead of thymine is paired with adenine.

• The mRNA strand is an exact copy of the DNA template strand; however, uracil instead of adenine is paired with thymine.

• The mRNA strand is an exact copy of the DNA template strand; however, uracil instead of thymine is paired with adenine.

Recent studies in bone research indicate that ultrasound on a broken bone can decrease healing time by 25%. Which of these are the most basic levels of organization involved when a bone heals?

• Cells and tissues

• Cells and organ systems

• Organ systems and organism

• Tissue and organ systems