Anatomy
The hard palate is formed posteriorly by which bone?
a) Palatine processes of the maxillae
b) Posterior nasal spine
c) Vomer
d) Horizontal plates of the palatine bones
d) Horizontal plates of the palatine bones
This is the week when implantation of the blastocyst into the endometrium normally occurs.
A) First week
B) Second week
C) Third week
D) Fourth week
B) Second week
What is the chemical formula of water?
A) HO₂
B) H₂O
C) OH
D) H₂O₂
B) H₂O
What type of epithelium does the stomach have?
A) Stratified squamous
B) Simple columnar
C) Cuboidal
D) Transitional
B) Simple columnar
Atomic number of gold?
a) 79
b) 47
c) 82
d) 26
a) 79
Through which foramen of the posterior cranial fossa do the vertebral arteries pass?
a) Mastoid foramen
b) Jugular foramen
c) Condylar foramen
d) Foramen magnum
d) Foramen magnum
This structure, derived from the epiblast in week 2, forms the roof of the amniotic cavity.
A) Cytotrophoblast
B) Hypoblast
C) Amnion
D) Primary yolk sac
C) Amnion
A protein is formed by how many amino acids?
A) 2–20 amino acids
B) 21–49 amino acids
C) 50 or more amino acids
D) Exactly 10 amino acids
C) 50 or more amino acids
Which of the following organelles produces energy in the cell?
A) Nucleus
B) Mitochondria
C) Lysosome
D) Endoplasmic reticulum
B) Mitochondria
First president of the USSR?
a) Stalin
b) Lenin
c) Trotsky
d) Khrushchev
b) Lenin
Which bones articulate with the frontal, sphenoid, temporal, and maxillary bones?
a) Zygomatic bones
b) Nasal bones
c) Ethmoid bone
d) Parietal bones
a) Zygomatic bones
This embryologic process forms the three primary germ layers.
A) Neurulation
B) Gastrulation
C) Somitogenesis
D) Implantation
B) Gastrulation
Which property of water is due to hydrogen bonds?
A) Low surface tension
B) Low heat capacity
C) High cohesion between molecules
D) Inability to form solutions
C) High cohesion between molecules
What is the main function of the rough endoplasmic reticulum (RER) in the cell?
A) Synthesizing lipids and hormones
B) Storing genetic material
C) Synthesizing proteins for secretion or membranes
D) Breaking down cellular waste
C) Synthesizing proteins for secretion or membranes
Most spoken native language in Africa?
a) Arabic
b) Swahili
c) Hausa
d) Zulu
c) Hausa
Which muscle of the anterior neck region, like the digastric muscle, has two bellies (superior and inferior) connected by an intermediate tendon?
a) Thyrohyoid
b) Omohyoid
c) Sternohyoid
d) Stylohyoid
b) Omohyoid
This midline structure induces formation of the neural plate through signaling molecules like Sonic hedgehog (Shh).
A) Primitive streak
B) Notochord
C) Neural crest
D) Somite
B) Notochord
Hydrogen bonds are mainly formed between:
A) Atoms with complete positive and negative charges
B) A hydrogen atom and an electronegative atom (O, N, or F)
C) Two carbon atoms
D) Two metals
B) A hydrogen atom and an electronegative atom (O, N, or F)
Which of the following nuclear structures is directly involved in ribosome synthesis?
A) Heterochromatin
B) Nucleolus
C) Nuclear envelope
D) Nuclear matrix
B) Nucleolus
Year of the Treaty of Tordesillas?
a) 1492
b) 1494
c) 1500
d) 1515
b) 1494
To which type of joint does this hyaline cartilage joint in the sacrum belong?
a) Fibrous joints
b) Primary cartilaginous joints
c) Synovial joints
d) Secondary cartilaginous joints
d) Secondary cartilaginous joints
Failure of migration of these cells results in aganglionic megacolon (Hirschsprung disease).
A) Paraxial mesoderm cells
B) Neural crest cells
C) Endodermal cells
D) Intermediate mesoderm cells
B) Neural crest cells
If a solution has a pH of 3, it is considered:
A) Basic
B) Neutral
C) Alkaline
D) Acidic
D) Acidic
Nucleolin and fibrillarin are nucleolar proteins. What is their main function within the nucleolus?
A) Transport messenger RNA to the cytoplasm
B) Participate in ribosome processing and assembly
C) Maintain the nuclear envelope intact during mitosis
D) Regulate DNA replication
B) Participate in ribosome processing and assembly
Most expensive painting ever sold at auction?
a) The Scream
b) Salvator Mundi
c) Las Meninas
d) Starry Night
b) Salvator Mundi