/

Which of the following processes causes most of the carbon dioxide from the blood to move into the alveoli?

A. Diffusion down a concentration gradient

B. Conversion of carbon monoxide

C. Passive transport using carrier proteins

D. Active transport using energy

Answer Explanation:

Carbon dioxide moves from the blood to the alveoli through the process of diffusion. The blood has a high concentration of carbon dioxide than the alveoli.
Therefore, carbon dioxide diffuses from blood to alveoli through the cell membrane.

Therefore, the Correct Answer is A.

Q #1: Punnett squares are used by geneticists to determine the probability of different offspring genotypes. In the one shown below, what letter(s) belong in the lower right box?

A. AA

B. Aa

C. aA

D. aa

Answer Explanation

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:

A

a

a

Aa

aa

a

Aa

aa

The requested answer is aa.
Q #2: In a plant in which fuzzy leaves (F) are dominant over smooth leaves (f), which of the following crosses will produce only offspring with smooth leaves?

A. Ff x ff

B. Ff x Ff

C. FF x FF

D. ff x ff

Answer Explanation

Crossing is the breeding of parents to produce an offspring. Given that f is a recessive allele of smooth leaves while F is the dominant allele of fuzzy leaves. Therefore, where there is F crossing with f, the offspring will have fuzzy leaves over smooth one.
Therefore, for an offspring to have smooth leaves, ff and ff must cross to produce an offspring with smooth leaves.
Q #3: Which of the following indicates the function of sodium bicarbonate released by the pancreas?

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

Answer Explanation

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.
Q #4: Which of the following are structural features of the trachea?

A. C-shaped cartilage

B. Smooth muscle fibers

C. Cilia

D. All of the above

Answer Explanation
Q #5: Which of the following processes does atmospheric pressure play a role in?

A. Pulmonary Ventilation

B. Photosynthesis

C. Osmosis

D. Evaporation

Answer Explanation

Among the choices provided, only one process is directly influenced by atmospheric pressure:

Pulmonary Ventilation (Correct): Pulmonary ventilation, also known as breathing, is driven by pressure differences between the lungs and the atmosphere. Atmospheric pressure plays a pivotal role in this process by facilitating the movement of air into and out of the lungs.

The other options mentioned in the choices—Photosynthesis, Osmosis, and Evaporation—are not primarily influenced by atmospheric pressure. While atmospheric pressure can indirectly affect certain aspects of these processes, it is not a dominant factor in their mechanisms.
Q #6: A myocardial infarction affects which of the following blood vessels of the heart?

A. Aorta

B. Vena cava

C. Pulmonary

D. Coronary

Answer Explanation

A myocardial infarction refers to heart attack, which result from blockage of blood flowing into the heart.

Blocking is caused by the deposition of fat or cholesterol that forms plaque on the surface of coronary arteries, which supply blood to the heart.
Q #7: Which of these infectious agents do not have nucleic acid?

A. viroids

B. viruses

C. bacteria

D. prions

Answer Explanation
Q #8: The ________ circulation picks up oxygen for cellular use and drops off carbon dioxide for removal from the body.

A. pulmonary

B. interlobular

C. respiratory

D. bronchial
Answer Explanation

Our blood flow is separated into two major pathways, listed below:
1. Systemic circulation - this comes from the left side of the heart and pumps blood to all working tissues, including the brain, muscle, heart, and other organs, and then into the right side of the heart.
2. Pulmonary system - this comes from the right side of the heart, and pumps blood to the alveolar sacs within the lungs, and then into the left side of the heart
In pulmonary circulation: The pulmonary artery is a big artery that comes from the heart. It splits into two main branches, and brings blood from the heart to the lungs. At the lungs, the blood picks up oxygen and drops off carbon dioxide.
Q #9: Gel electrophoresis To separate genomic DNA fragments by size, which of these laboratory methods is most useful?

A. Filtration

B. Titration

C. Electrophoresis

D. Spectrophotometry

Answer Explanation

Electrophoresis is a lab method that is commonly used to separate charge molecules based on their size. Some of the charged molecules include DNA, RNA, and proteins.
Q #10: Which of the following best describes the result of using a catalyst in a chemical reaction?

A. A more desirable product is often formed

B. The reaction is completed in a shorter amount of time

C. The yield of product is increased

D. A greater amount of energy is released by the reaction

Answer Explanation

A catalyst is substance that speeds up the rate of converting reactants to products. They do by decreasing the activation energy of a reaction. If a catalyst increases the rate of reaction, then it means that the reaction takes a smaller time to come into completion.
Catalysts can be metals, ions or biological also known as enzymes. Catalysts are not consumed when the reaction is taking place.

Free Access on TEAS 7 Exams and Study Notes

Access to all TEAS 7 Exams
Performance Tracking and Analysis
Well Documented and Explained Questions and Answers
2000+ Questions and Correct Answers: Answers Well Explained
Libary of Detailed StudyNotes
Topical Questions and Answers on Examinable topics

Join Now