Free ATI TEAS Science Diagnostic Test

Question 1 of 50

1. Question

Which of the following correctly describes the law of segregation?

It states that allele pairs segregate during gametogenesis and reunite randomly during the fertilization process.
It states that the segregation of the dominant trait in the phenotype happens in the hybrid offspring.
It states that the hereditary factors segregate independently of one another during gametogenesis.
It states that all the genetic factors are present in the DNA.

Question 2 of 50

2. Question

The genotypes of the parents in the Punnett square below can be described as __________.

Heterozygous dominant and homozygous dominant
Heterozygous recessive and heterozygous dominant
Heterozygous recessive and homozygous recessive
Homozygous dominant and homozygous recessive

Question 3 of 50

3. Question

Which of these is a function of a ribosome?

Ribosomes carry the codons required for protein synthesis.
Ribosomes can decode mRNA and assemble amino acids for protein synthesis.
Ribosomes move along the length of the amino acid chain to introduce peptide bonds in between them.
Ribosomes transfer mRNA from the nucleus to the cytoplasm.

Question 4 of 50

4. Question

The number of protons is the same as?

The angular momentum
Number of isotopes for the element
The atomic number
The nuclear force

Question 5 of 50

5. Question

Which of the following statements is true about protons?

They have a negative charge.
They have more mass than a neutron.
Some atoms have no protons.
The number of protons in the nucleus is the defining property of an element.

Question 6 of 50

6. Question

A lipid or fat molecule can be broken down into fatty acids and __________.

Type your response in the box below.

Question 7 of 50

7. Question

Which of the following prefixes would likely be the most appropriate for measuring the weight of a 2,500 g kitten?

Giga
Kilo
Nano
Pico

Question 8 of 50

8. Question

Which of these bonds would we see between nitrogenous bases?

Ionic bonds
Sulphide bonds
Hydrogen bonds
Polar bonds

Question 9 of 50

9. Question

Which of the following is the most accurate description of the link between chromosomes and DNA?

Chromosomes include numerous genes, each of which is made up of a DNA sequence.
Chromosomes are the building blocks of DNA.
The DNA sequence is made up of chromosomes, which include numerous genes.
Genes contain chromosomes that are made up of DNA.

Question 10 of 50

10. Question

Which of the following statements about diffusion is true?

Please select all that apply.

Gas exchange in tissues is an example of diffusion.
Osmosis is an example of diffusion.
Diffusion is the net movement of molecules or atoms from a region of higher concentration to a region of lower concentration.
Diffusion is the net movement of molecules or atoms from a region of lower concentration to a region of higher concentration.
Diffusion is an active process.
Diffusion is a passive process

Question 11 of 50

11. Question

Which of the following hormones is not increased in response to dehydration?

Antidiuretic hormone
Erythropoietin
Aldosterone
Renin

Question 12 of 50

12. Question

In which segment of the nephron is glucose reabsorbed?

Loop of henle
Distal convoluted tubule
Proximal convoluted tubule
Collecting duct

Question 13 of 50

13. Question

What is the correct sequence in which inhaled air passes through the respiratory tract?

Drag and drop tiles to reorder the sequence.

Larynx
Trachea
Pharynx
Nasal cavity
Bronchi
Bronchioles

View Answers:

Question 14 of 50

14. Question

Which of the following is a hypothesis?

When I added fertilizer to my plants, they grew more quickly.
One liter of water was added to a reaction.
Five different breeds of dogs are at the dog park.
If a student gets more sleep, they will get a higher test score.

Question 15 of 50

15. Question

Which of the following descriptions is correct?

Solid: no constant volume and no constant shape
Gas: constant volume and a definite shape
Gas: no definite volume and no definite shape
Liquid: no definite volume and constant shape

Question 16 of 50

16. Question

Using the provided image, choose the anatomical structure designated by letter B.

Right ventricle
Right atrium
Left ventricle
Left atrium

Question 17 of 50

17. Question

Balance the following chemical equation:

CH₄ + Cl₂ → CCl₄ + HCl

2 CH₄ + Cl₂ → 2 CCl₄ + HCl
CH₄ + Cl₂ → CCl₄ + HCl
2 CH₄ + 2 Cl₂ → 2 CCl₄ + 2 HCl
CH₄ + 4 Cl₂ → CCl₄ + 4 HCl

Question 18 of 50

18. Question

The _________________ is the blood vessel that carries oxygen depleted blood away from the heart.

Type the correct response in the box below.

Question 19 of 50

19. Question

Which of the following statements is true about viruses?

All viruses only have DNA as their genetic material.
All viruses only have RNA as their genetic material.
Viruses have a mix of both DNA and RNA components.
Viruses will have either DNA and RNA as their genetic material, but not both.

Question 20 of 50

20. Question

Which of the following structures is correctly paired with its function?

Mouth- mechanical digestion
Stomach- absorption of nutrients
Small intestine- formation of feces
Colon- formation of chyme

Question 21 of 50

21. Question

The respiratory system is composed of organs that facilitate gas exchange between the blood and the external environment. Which of the following describes the group of organs that function during gas exchange?

Organelle
Organ
Tissue
Organ System

Question 22 of 50

22. Question

Which of the following is the process by which gametes divide and produce half the number of chromosomes found in a somatic cell?

Fertilization
Meiosis
Gametes
Zygote

Question 23 of 50

23. Question

Which of the following correctly describes the difference between compact bone and spongy bone?

Compact bone has trabeculae that support the bone marrow
Compact bone is located more interior than spongy bone
Spongy bone has more osteons than compact bone
Spongy bone is lighter than compact bone

Question 24 of 50

24. Question

Which of the following correctly describes anatomical position?

Prone, arms at sides, palms facing anteriorly
Supine, arms at sides, palms facing posteriorly
Upright, arms at sides, palms facing anteriorly
Seated, arms at sides, palms facing posteriorly

Question 25 of 50

25. Question

Which of the following is a substance that the kidneys remove from the blood during filtration?

Oxygen
Carbon Dioxide
Red Blood Cells
Salts

Question 26 of 50

26. Question

Which of the following does not describe the dermis?

The thickest layer of the skin
A vascular layer of the skin
The layer of the skin where cells containing the pigment melanin are found
The layer of the skin that contains the network of capillaries necessary for thermoregulation

Question 27 of 50

27. Question

T-lymphocytes mature and become functional in which of the following organs?

Bone marrow
Spleen
Lymph nodes
Thymus

Question 28 of 50

28. Question

Which of the following is not true about thermoregulation?

Contraction of arrector pili muscles facilitates vasodilation.
Sweating facilitates cutaneous vasodilation.
Cutaneous vasodilation cools the body by allowing heat to be released through skin.
Cutaneous vasoconstriction warms the body by restricting blood flow in the skin.

Question 29 of 50

29. Question

Which of the following is correct about muscle contraction?

Please select all that apply.

Muscle contraction requires ATP.
Neurotransmitters stimulate muscle contraction.
Actin filaments shorten during contraction.
Myosin filaments shorten during contraction.
Sarcomere shorten during contraction.
Actin and myosin filaments slide past each other.

Question 30 of 50

30. Question

Which of the following is not true about reproductive hormones?

FSH (follicle-stimulating hormone) is produced by the anterior pituitary gland.
LH (luteinizing hormone) is produced by the posterior pituitary gland.
FSH (follicle-stimulating hormone) stimulates maturation of sperm and ovum.
LH (luteinizing hormone) stimulates ovulation and production of testosterone.

Question 31 of 50

31. Question

Which of the following comparisons between arteries and veins is true?

Veins have valves, and arteries do not.
Veins have thick, muscular walls, while arteries have thin, more compliant walls.
Veins carry freshly oxygenated blood from tissue back to the heart, while arteries carry oxygen-depleted blood away from the heart.
Veins have a smaller diameter than arteries.

Question 32 of 50

32. Question

Melatonin is the hormone that regulates sleep-and-wake rhythm. Which of the following endocrine glands is responsible for producing melatonin?

Hypothalamus
Pituitary
Pineal
Adrenal

Question 33 of 50

33. Question

Which of the following substances would not dissolve in water?

NaCl
CH₃OH
C₃H₆
CH₃CH₂OH

Question 34 of 50

34. Question

Gas exchange between the blood and alveoli would be enhanced by ______________, but impeded by __________________.

increased tidal volume; decreased membrane thickness
increased alveolar surface area; increased membrane thickness
decreased respiratory rate; increased tidal volume
decreased membrane thickness; increased alveolar surface area

Question 35 of 50

35. Question

Which of the following is true of insulin and glucagon?

Please select all that apply.

Secretion of insulin and glucagon is regulated by the pituitary gland.
The pancreas secretes insulin and glucagon.
Insulin and glucagon regulate the level of calcium in the blood.
Insulin and glucagon regulate the level of glucose in the blood.
Insulin and glucagon have opposite effects on blood glucose but work together to maintain homeostasis.
Insulin and glucagon have opposite effects on blood calcium levels but work together to maintain homeostasis.

Question 36 of 50

36. Question

The majority of nutrient absorption occurs in the _________________.

Type your response in the box below.

Question 37 of 50

37. Question

Match the following structures to their function.

Drag and drop tiles in the appropriate box.

Sort elements

External sex organ of a male
Sperm channel from the epididymis to the penis
Copulatory organ of the female
Implantation site of a zygote

Penis
Vas deferens
Vagina
Uterus

Question 38 of 50

38. Question

Which of the following causes bone matrix resorption during bone growth and remodeling?

Osteocytes
Osteoblasts
Osteoclasts
Osteons

Question 39 of 50

39. Question

Which of the following antigen-specific immune cells produce cytokines, which facilitate various immune reactions?

Helper T-cell
Cytotoxic T-cell
Macrophage cell
B-cell

Question 40 of 50

40. Question

Which of the following is a function of the epidermis?

Please select all that apply.

It functions as a major component of the adaptive immune system
It protects underlying tissues from abrasions.
It contains many blood vessels that can constrict or dilate for thermoregulation
It stores fat
It functions as a major component of the innate immunity
It protects underlying tissue from chemicals.

Question 41 of 50

41. Question

Movement of molecules in a substance depends on _______ energy.

Gamma ray
heat
X-ray
UV

Question 42 of 50

42. Question

A scientist collected the following set of data to examine the effects of exercise on patients’ heart rates.

Patients were tasked with running 1 mile everyday for three days in the presence of the scientists. They were required to run the entire mile and were not allowed to walk. At the end of each mile run, the scientists measured the heart rates of the patients. Which of the following conclusions can be drawn from this data?

Running increased the heart rates of the patients
Patients that ran the mile faster had higher heart rates
The patients became fitter with each mile run
The patients ran Mile 3 faster than Mile 1

Question 43 of 50

43. Question

Which of the following statements is true about hydrogen bonds?

They result from the attraction between ions that have no charge
They are considered strong attractive forces
They form between a partial positively charged region on one molecule and the partial negatively charged region on another molecule
They don’t affect the properties of water in any way

Question 44 of 50

44. Question

Which of the following is the most plausible sequence of events?

Born into musical family; grows up around music; starts learning guitar; plays concert
Extensive car use; air pollution; less people with asthma; less healthcare expenses
Walk in the woods; stung by bee; given morphine; early death
Poaching more rhinos; more export rhino horn goods; more goods with a lower economic value; economy boost

Question 45 of 50

45. Question

Which would be the approximate mass of a car?

18 kg
180,000 kg
1,800 kg
180 kg

Question 46 of 50

46. Question

The same single-replacement reaction is run in two different beakers. The beakers are labeled as Beaker A and B and are heated to 75^oC and 100^oC, respectively. If the reactions are run for 15 minutes each, which of the following results would you expect to observe?

Beaker A produces more product than Beaker B
The two beakers produce the same amount of product
Beaker B produces more product than Beaker A
No products are produced in either beaker

Question 47 of 50

47. Question

Enzymes are biological catalysts that ___________.

Increase the rate of any given reaction
Use up the substrate molecules in the reaction
Are necessary to convert substrate into products
Bind to the products

Question 48 of 50

48. Question

Why are control groups used in experiments?

To minimize the effect of variables
To ensure the accuracy of measurements
To increase the amount of data collected
To help scientists quickly perform experiments

Question 49 of 50

49. Question

Review the data in this table, and then choose the statement that draws the best conclusion?

Hours spent sleeping and score on the test correlate negatively with one another
Hours spent sleeping and score on the test correlate with one another
Amount of time spent sleeping is the cause of what test score was received
There is no correlation between sleep time and test score

Question 50 of 50

50. Question

Dissolved oxygen (DO) is an important indicator of water quality, and oxygen levels that are too high or too low can harm aquatic ecosystems. A biologist noticed that fish were dying in a local lake and was concerned that the DO levels were too low to support aquatic life due to extremely high temperatures that summer. To measure the DO levels, she brought back several lake water samples to her laboratory to measure the DO concentration as a function of temperature. To do this, she heated several samples of lake water to various temperatures and then measured the DO concentration in each sample. Some samples were kept at the outdoors temperature.

Which of the following is the independent variable?

Dissolved oxygen concentration
Temperature
Volume of water
Location of the lake

ATI TEAS 7 Science Course

Free ATI TEAS Science Diagnostic Test (50 Questions)

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