39 Questions
What is the main function of Leptin?
Causes you to feel full
Which hormone is responsible for upregulation of aquaporin channels within the collecting ducts?
ADH
What characteristic differentiates Steroid Hormones from Peptide Hormones?
Derived from cholesterol
Which type of linkage is present in Cellulose?
Beta-1,4 linkage
What happens when TSH is suppressed?
Increase in ACTH levels
What is responsible for the specificity of receptors?
G-protein linked receptors
Which hormone types are involved in blood calcium regulation?
Parathyroid Hormone (PTH) and Calcitonin
What is the function of Vitamin D in the body?
Increasing blood calcium levels
Which stop codon is responsible for terminating translation?
UAG
Which enzyme is responsible for proofreading DNA sequences during replication?
DNA Polymerase
What is the process called when a carbohydrate group is covalently attached to a protein?
Glycosylation
Which structure is responsible for producing oocytes and secreting hormones?
Ovary
What occurs in the process of DNA methylation?
Repression of transcription through addition of methyl group to DNA
Which tube is the location of fertilization?
Uterine (fallopian) tube
What is the process called when a phosphate group is covalently attached to a protein?
Phosphorylation
What type of receptors respond to mechanical forces, vibrations, and pressure changes?
Mechanoreceptors
Which type of scan reveals images of anatomy?
MRI
Which of the following is a Ca2+ dependent transmembrane glycoprotein that mediates cell-cell adhesion?
Cadherins
What is the function of Gap junctions?
Allow for rapid exchange of ions and small molecules
Which sensory receptors respond to light and are found in the retina of the eye?
Photoreceptors
What is the primary function of primase in DNA replication?
Making an RNA primer to match a fragment of DNA
Which reflex involves spreading and lifting of a baby's toes when the sole is stimulated?
Babinski reflex
What type of junction prevents the leakage of small molecules and ions between adjacent epithelial cells?
Tight junctions
If a baby exhibits the Moro reflex, what physical response would you expect to see?
Extension and drawing in of the arms and legs, throwing back of the head
What is the main role of ligases in DNA replication?
Binding two DNA fragments with phosphodiester bonds
What is the role of Sulfolipids?
Playing a role in photosynthesis
Which process describes vertical diffusion in the cell membrane?
Movement of molecules from one leaflet to another
What is the energy requirement for scramblases to move phospholipids in the cell membrane?
ATP-independent
Where are gustatory chemoreceptors located?
Taste buds on the tongue
Which receptors detect stimuli from internal organs and blood vessels?
Baroreceptors
Which type of mutation involves flipping a chromosomal segment?
Inversion Mutation
What is the function of Goblet cells in the respiratory tract?
Produce mucus
Which type of epithelial cells produce surfactant in the lungs?
Pneumocytes II
What is the main function of axons in neurons?
Direct impulse
Which mutation results from the insertion or deletion of bases that shifts the reading frame?
Frameshift Mutation
What is the role of Myelin Sheath around axons?
Insulates nerve signals
Which type of mutation tends to accumulate in species during evolution by natural selection?
Beneficial Mutation
'Dendrites' in neurons function to:
Receive action potentials
'Translocation' in genetics refers to the movement of a chromosomal segment to:
'Another chromosome'
Test your knowledge on the functions of molecules in the cell membrane, including maintaining membrane integrity, generating immune responses, photosynthesis, and lipid bilayer movements.
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