ATI TEAS Version 7 - Science

Access The Exact Questions for ATI TEAS Version 7 - Science

💯 100% Pass Rate guaranteed

🗓️ Unlock for 1 Month

Rated 4.8/5 from over 1000+ reviews

  • Unlimited Exact Practice Test Questions
  • Trusted By 200 Million Students and Professors

130+

Enrolled students
Starting from $30/month or Access All TEAS Subjects for only $49/month

What’s Included:

  • Unlock Actual Exam Questions and Answers for ATI TEAS Version 7 - Science on monthly basis
  • Well-structured questions covering all topics, accompanied by organized images.
  • Learn from mistakes with detailed answer explanations.
  • Easy To understand explanations for all students.
Subscribe Now or Access All TEAS Subjects for only $49/month payment card

Rachel S., College Student

I used the Sales Management study pack, and it covered everything I needed. The rationales provided a deeper understanding of the subject. Highly recommended!

Kevin., College Student

The study packs are so well-organized! The Q&A format helped me grasp complex topics easily. Ulosca is now my go-to study resource for WGU courses.

Emily., College Student

Ulosca provides exactly what I need—real exam-like questions with detailed explanations. My grades have improved significantly!

Daniel., College Student

For $30, I got high-quality exam prep materials that were perfectly aligned with my course. Much cheaper than hiring a tutor!

Jessica R.., College Student

I was struggling with BUS 3130, but this study pack broke everything down into easy-to-understand Q&A. Highly recommended for anyone serious about passing!

Mark T.., College Student

I’ve tried different study guides, but nothing compares to ULOSCA. The structured questions with explanations really test your understanding. Worth every penny!

Sarah., College Student

ulosca.com was a lifesaver! The Q&A format helped me understand key concepts in Sales Management without memorizing blindly. I passed my WGU exam with confidence!

Tyler., College Student

Ulosca.com has been an essential part of my study routine for my medical exams. The questions are challenging and reflective of the actual exams, and the explanations help solidify my understanding.

Dakota., College Student

While I find the site easy to use on a desktop, the mobile experience could be improved. I often use my phone for quick study sessions, and the site isn’t as responsive. Aside from that, the content is fantastic.

Chase., College Student

The quality of content is excellent, but I do think the subscription prices could be more affordable for students.

Jackson., College Student

As someone preparing for multiple certification exams, Ulosca.com has been an invaluable tool. The questions are aligned with exam standards, and I love the instant feedback I get after answering each one. It has made studying so much easier!

Cate., College Student

I've been using Ulosca.com for my nursing exam prep, and it has been a game-changer.

KNIGHT., College Student

The content was clear, concise, and relevant. It made complex topics like macronutrient balance and vitamin deficiencies much easier to grasp. I feel much more prepared for my exam.

Juliet., College Student

The case studies were extremely helpful, showing real-life applications of nutrition science. They made the exam feel more practical and relevant to patient care scenarios.

Gregory., College Student

I found this resource to be essential in reviewing nutrition concepts for the exam. The questions are realistic, and the detailed rationales helped me understand the 'why' behind each answer, not just memorizing facts.

Alexis., College Student

The HESI RN D440 Nutrition Science exam preparation materials are incredibly thorough and easy to understand. The practice questions helped me feel more confident in my knowledge, especially on topics like diabetes management and osteoporosis.

Denilson., College Student

The website is mobile-friendly, allowing users to practice on the go. A dedicated app with offline mode could further enhance usability.

FRED., College Student

The timed practice tests mimic real exam conditions effectively. Including a feature to review incorrect answers immediately after the simulation could aid in better learning.

Grayson., College Student

The explanations provided are thorough and insightful, ensuring users understand the reasoning behind each answer. Adding video explanations could further enrich the learning experience.

Hillary., College Student

The questions were well-crafted and covered a wide range of pharmacological concepts, which helped me understand the material deeply. The rationales provided with each answer clarified my thought process and helped me feel confident during my exams.

JOY., College Student

I’ve been using ulosca.com to prepare for my pharmacology exams, and it has been an excellent resource. The practice questions are aligned with the exam content, and the rationales behind each answer made the learning process so much easier.

ELIAS., College Student

A Game-Changer for My Studies!

Becky., College Student

Scoring an A in my exams was a breeze thanks to their well-structured study materials!

Georges., College Student

Ulosca’s advanced study resources and well-structured practice tests prepared me thoroughly for my exams.

MacBright., College Student

Well detailed study materials and interactive quizzes made even the toughest topics easy to grasp. Thanks to their intuitive interface and real-time feedback, I felt confident and scored an A in my exams!

linda., College Student

Thank you so much .i passed

Angela., College Student

For just $30, the extensive practice questions are far more valuable than a $15 E-book. Completing them all made passing my exam within a week effortless. Highly recommend!

Anita., College Student

I passed with a 92, Thank you Ulosca. You are the best ,

David., College Student

All the 300 ATI RN Pediatric Nursing Practice Questions covered all key topics. The well-structured questions and clear explanations made studying easier. A highly effective resource for exam preparation!

Donah., College Student

The ATI RN Pediatric Nursing Practice Questions were exact and incredibly helpful for my exam preparation. They mirrored the actual exam format perfectly, and the detailed explanations made understanding complex concepts much easier.

Free ATI TEAS Version 7 - Science Questions

1. What is the relationship between atomic mass and mass number? A. They are the same. B. Atomic mass is always greater than mass number. C. Atomic mass and mass number are not related. D. Atomic mass is very close to mass number but with some deviation in the decimal places.
  • They are the same.
  • Atomic mass is always greater than mass number.
  • Atomic mass and mass number are not related.
  • Atomic mass is very close to mass number but with some deviation in the decimal places.

Explanation

The mass number is the total number of protons and neutrons in an atom, always a whole number. The atomic mass is the weighted average of all naturally occurring isotopes of an element, measured in atomic mass units (amu). Because isotopes have slightly different masses, the atomic mass often includes decimals and is close—but not identical—to the mass number.
2.

Which of the following is a function of the smooth endoplasmic reticulum?

  • To phagocytose bacteria

  • To synthesize lipids

  • To generate energy

  • To form ribosomes

Explanation

Correct Answer:

To synthesize lipids

Explanation:

The smooth endoplasmic reticulum (SER) is an organelle involved in the synthesis of lipids, including phospholipids and cholesterol, which are essential components of cell membranes. It also plays a role in detoxification of drugs and toxins in liver cells and in the storage of calcium ions in muscle cells. Unlike the rough ER, the smooth ER does not have ribosomes on its surface, hence it is not involved in protein synthesis.

Why Other Options Are Wrong:

To phagocytose bacteria

This is incorrect because phagocytosis is performed by certain immune cells, like macrophages and neutrophils, not by the smooth ER. It is a process involving engulfing pathogens, not organelle function.

To generate energy

This is incorrect because energy generation occurs in the mitochondria through cellular respiration, not in the smooth ER. The smooth ER is not involved in ATP production.

To form ribosomes

This is incorrect because ribosomes are formed in the nucleolus and are found on the rough ER, not the smooth ER. The smooth ER lacks ribosomes and does not participate in their production.


3. After food has been masticated in the oral cavity, where does it go next?
  • Colon
  • Liver
  • Pancreas
  • Pharynx

Explanation

After mastication (chewing) in the oral cavity, food is formed into a bolus and pushed to the back of the mouth by the tongue during swallowing. It then enters the pharynx, a muscular passage that serves as a common pathway for both the respiratory and digestive systems. From the pharynx, the food passes into the esophagus, which propels it toward the stomach via peristaltic movements.
4. What is the function of inflammatory cytokines released during the early response to bacterial infection?
  • Enhancing the phagocytosis of pathogens and disrupting the infection
  • Attacking invading pathogens
  • Initiating cell recruitment and local inflammation
  • Secreting antibodies to neutralize pathogens

Explanation

Inflammatory cytokines, such as interleukins (IL-1, IL-6) and tumor necrosis factor-alpha (TNF-α), are released early in bacterial infections to initiate local inflammation and recruit immune cells like neutrophils and macrophages to the infection site. This early signaling amplifies the immune response, helps contain the infection, and promotes tissue repair.
5. What is the largest organ in the human body by surface area?
  • Brain
  • Heart
  • Liver
  • Skin

Explanation

The skin is the largest organ in the human body by both surface area and weight. It covers approximately 1.5 to 2 square meters in an adult and accounts for about 16% of total body weight. The skin acts as a barrier protecting internal organs from pathogens, UV radiation, and dehydration. It also helps regulate body temperature and allows sensory perception through touch, pain, and temperature receptors.
6. What is the organelle that encapsulates the contents of the cell and plays a vital role in regulating the movement of substances in and out of the cell? A. Ribosome B. Nucleus C. Mitochondria D. Plasma membrane
  • Ribosome
  • Nucleus
  • Mitochondria
  • Plasma membrane

Explanation

The plasma membrane, also known as the cell membrane, is a selectively permeable barrier that encloses the cell’s contents and controls the movement of substances in and out of the cell. It is composed of a phospholipid bilayer with embedded proteins that help transport ions, nutrients, and waste products, maintaining the internal environment and homeostasis of the cell.
7.

Which of the following heart valves prevents the backflow of blood into the left atrium during left ventricular systole?

  • Tricuspid

  • Pulmonary semilunar

  • Aortic semilunar

  • Bicuspid

Explanation

Correct Answer:

Bicuspid

Explanation:

The bicuspid valve, also known as the mitral valve, is located between the left atrium and left ventricle. During left ventricular systole (when the left ventricle contracts), the bicuspid valve closes to prevent blood from flowing backward into the left atrium. Instead, blood is pushed forward into the aorta through the aortic semilunar valve. Proper functioning of the bicuspid valve is essential for unidirectional blood flow in the heart.

Why Other Options Are Wrong:

Tricuspid

This is incorrect because the tricuspid valve is located between the right atrium and right ventricle. It plays no role in controlling blood flow between the left atrium and left ventricle.

Pulmonary semilunar

This is incorrect because the pulmonary semilunar valve controls blood flow from the right ventricle to the pulmonary artery. It does not regulate flow on the left side of the heart.

Aortic semilunar

This is incorrect because the aortic semilunar valve is between the left ventricle and the aorta. It prevents backflow from the aorta into the left ventricle—not from the ventricle to the atrium.


8. Which of the following statements is true regarding vaccines?
  • Vaccines can cause the disease they are designed to protect against
  • Vaccines work by providing passive immunity to the individual
  • Vaccines work by exposing the individual to a weakened or inactivated form of the pathogen
  • Vaccines only provide protection against bacterial infections

Explanation

Vaccines stimulate the body’s immune system by introducing a weakened, inactivated, or part of a pathogen (such as a protein or antigen) without causing disease. This exposure triggers the immune system to produce antibodies and memory cells, providing active immunity. When the actual pathogen is encountered later, the immune system responds quickly, preventing illness. Vaccines are designed to safely build long-term protection.
9. As soon as an invader, known as a(n) _____, enters the body, the body begins to fight.
  • Antibody
  • Pathogen
  • Trigger
  • Vaccination

Explanation

A pathogen is any disease-causing microorganism or agent, such as bacteria, viruses, fungi, or parasites. When a pathogen enters the body, the immune system recognizes it as foreign and immediately activates defense mechanisms. This includes the release of white blood cells and the production of antibodies to neutralize or destroy the invader. This rapid immune response helps protect the body from infection and illness.
10.

Which of the following biological macromolecules is found in vitamin K

  • Nucleic acids

  • Proteins

  • Lipids

  • Carbohydrates

Explanation

Correct Answer C. Lipids

Explanation:

Vitamin K is a fat-soluble vitamin, meaning it is chemically classified as a lipid. Its structure includes a hydrophobic (fat-loving) side chain that allows it to dissolve in fats and oils, enabling its absorption and storage in the body alongside other fat-soluble vitamins.

Why Other Options Are Wrong:

A. Nucleic acids

Nucleic acids are genetic materials (DNA, RNA) and are not components of vitamins.

B. Proteins

Proteins are made of amino acids and do not make up vitamin K.

D. Carbohydrates

Carbohydrates are sugars and starches, unrelated to the chemical structure of vitamin K.


How to Order

1

Select Your Exam

Click on your desired exam to open its dedicated page with resources like practice questions, flashcards, and study guides.Choose what to focus on, Your selected exam is saved for quick access Once you log in.

2

Subscribe

Hit the Subscribe button on the platform. With your subscription, you will enjoy unlimited access to all practice questions and resources for a full 1-month period. After the month has elapsed, you can choose to resubscribe to continue benefiting from our comprehensive exam preparation tools and resources.

3

Pay and unlock the practice Questions

Once your payment is processed, you’ll immediately unlock access to all practice questions tailored to your selected exam for 1 month .

Subscribe Now