30 Questions
What is the function of Bartholin's Gland?
To produce a fluid secretion
What is the primary function of the clitoris?
To assist in sexual arousal
What is the main role of the vagina?
To connect the cervix to the outside of the body
What is the primary function of the uterus?
To house the developing fetus
What is the main role of the ovaries?
To produce hormones
What is the function of the fimbriae?
To receive the ovum
What happens during depolarization?
It triggers an action potential
What is the primary function of ungated channels during the resting state?
Maintain the resting potential
At what membrane potential does the threshold for triggering an action potential lie?
-55 mV
What is the significance of the falling phase of the action potential?
The membrane returns to its resting state
What happens during the rising phase of an action potential?
Most potassium channels open
What principle states that the power of a stimulus is not proportional to the power of the action potential?
All-or-nothing Principle
What is the role of the enzyme helicase in DNA replication?
Helicase breaks the hydrogen bonds that hold the DNA bases together, unwinding the double helix.
What is the role of the enzyme topoisomerase during DNA replication?
Topoisomerase breaks, swivels, and rejoins the DNA strands to relieve the overwinding strain ahead of the replication forks.
What is the function of DNA Polymerase III (DNA Pol III) during DNA replication?
DNA Pol III uses the parental DNA as a template to synthesize new DNA strands by adding nucleotides to an RNA primer or a pre-existing DNA strand.
What is the role of DNA Polymerase I (DNA Pol I) during DNA replication?
DNA Pol I removes the RNA nucleotides of the primer and replaces them with DNA nucleotides.
What is the function of the enzyme primase during DNA replication?
Primase makes the primer so that DNA polymerase can figure out where to start the replication process.
What is the difference between the leading strand and the lagging strand during DNA replication?
The leading strand is made continuously, while the lagging strand is made discontinuously.
What is the primary function of calcitonin in the regulation of blood calcium levels?
Promotes the uptake of calcium by bones
Which hormone is responsible for raising blood glucose levels when they are low?
Glucagon
In individuals with Type 1 diabetes, what is the underlying cause of their inability to regulate blood glucose levels?
Inability to produce insulin
What is the primary function of the renin-angiotensin system in regulating blood pressure and volume?
Stimulating the kidneys to secrete renin to regulate blood pressure
What is the primary function of DNA in living organisms?
Storing and transmitting genetic information
Which of the following statements about the structure of DNA is correct?
The DNA backbone is composed of phosphate and sugar molecules
During translation, which component determines the order of amino acids in a protein?
tRNA anticodons
What is the role of ribosomes in the process of translation?
Pairing tRNA anticodons with mRNA codons
Which nucleotide sequence is found on tRNA and binds to the corresponding mRNA sequence during translation?
Anticodon
What triggers the termination phase of translation?
UAA codon
Which type of mutation is passed on to offspring?
Gene mutation in gametes
What may lead to gene mutations?
Copying errors in DNA replication
Test your knowledge on the process of action potential in neurons, including the resting state, depolarization, and rising phase. Learn how sodium and potassium channels play a crucial role in generating electrical signals within neurons.
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