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ATI- science (amanda_teas/naxlex)

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ATI- science (amanda_teas/naxlex)

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Institution
ATI- science
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ATI- science

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Uploaded on
May 20, 2025
Number of pages
37
Written in
2024/2025
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Exam (elaborations)
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What are the three types of salivary glands & where are they located? (Match the letter to the number.)



A) Parotid

B) Sublingual

C) Submandibular



1) Under the jawbone

2) Roof of the mouth

3) Within the cheeks - ANS_A2) Parotid is located in the roof of the mouth.

B3) Sublingual is within the cheeks.

C1) Submandibular is under the jawbone.



Which of the following substances is excreted by the kidneys to regulate blood pressure?



A) Renin

B) Erythropoietin

C) Calcitriol

D) Urobilinogen - ANS_A) Renin



What is the chemical formula for water?

,A) H₂O

B) CO₂

C) NaCl

D) C₆H₁₂O₆ - ANS_A) H₂O



What is the largest organ in the human body by surface area?



A) Brain

B) Heart

C) Liver

D) Skin - ANS_D) Skin



Which of the following units is used to indicate length?



A) kg

B) L

C) s

D) m - ANS_D) m



The unit used to indicate length is the meter (m). It is the base unit of length in the International System
of Units (SI).



A researcher collects data on the number of cars passing through a busy intersection at different times
of the day for a month. This data would be most useful to analyze which of the following:



A) Traffic patterns during rush hour

,B) Pedestrian movement during the day

C) Air pollution levels in the area

C) Noise levels in the area - ANS_A) Traffic patterns during rush hour



Which of the following describes the function of ligaments?



A) Ligaments attach skeletal muscles to bone

B) Ligaments attach two bones

C) Ligaments attach bones to tendons

D) Ligaments attach skeletal muscles to tendons - ANS_B) Ligaments attach two bones



Which of the following is responsible for carrying amino acids to ribosomes during protein synthesis?



A) tRNA

B) mRNA

C) rRNA

D) DNA - ANS_A) tRNA



Each tRNA molecule has a specific anticodon that matches a codon on the mRNA molecule. When
bonded, it brings the corresponding amino acid to the ribosome, where it is added to the growing
polypeptide chain.



Which part of the respiratory system is responsible for regulating breathing rate & depth?



A) Bronchi

B) Alveoli

, C) Diaphragm

D) Trachea - ANS_C) Diaphragm



Which of the following is the process by which DNA is copied into RNA?



A) Replication

B) Transcription

C) Translation

D) Mutation - ANS_B) Transcription



During transcription, DNA unwinds & RNA polymerase reads the DNA sequences & synthesizes a
complementary RNA molecule using DNA as a template.



What is the difference between innate & adaptive immunity?



A) Innate immunity is present at birth while adaptive immunity is acquired after exposure to pathogens.

B) Innate immunity is specific to particular pathogens while adaptive immunity is nonspecific.

C) Innate immunity is mediated by antibodies while adaptive immunity is mediated by T cells.

D) Innate immunity provides long-term protection while adaptive immunity provides only short-term
protection. - ANS_A) Innate immunity is present at birth while adaptive immunity is acquired after
exposure to pathogens.



Innate immunity is the first line of defense & present at birth, it includes physical/chemical barriers.
(Skin, mucous membranes, antimicrobial peptides, macrophages, natural killer cells).

Adaptive immunity is acquired after exposure to pathogens, it involves production of antibodies &
activation of T cells specific to particular pathogens. It's longer to develop but more specific/targeted.
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