Question of the Day III Flashcards
What are one of the few veins which carry oxygenated blood?
Pulmonary veins and umbilical veins
DNA Topoisomerase is a protein which
Relaxes supercoiling
What protein unwinds the double helix of the DNA by breaking the hydrogen bonds
Helicase
What protein removes and replaces the RNA primer with DNA
DNA Polymerase I
What does DNA Ligase do?
Joins DNA segments together, as seen with Okazaki fragments
Bacteria do not undergo
Meiosis and Sexual Reproduction
What is transformation?
Picking up free DNA from other dead bacteria
What is conjugation?
The transfer of DNA from one cell to another via pilus
What is transduction?
The use of bacteriophages (viruses) to transfer DNA from one bacteria to another via infection
What does the endosymbiotic theory explain?
How mitochondria and chloroplasts are found in eukaryotic cells
What is a component of the bacterial cell wall?
Peptidoglycan
Plant cell walls are composed of
Cellulose
Fungi cell walls are made of
Chitin
How much ATP in the TCA cycle?
- 2 ATP are produced under substrate-level phosphorylation
- 18 ATP are produced under oxidative phosphorylation (with 6 NADH)
- 4 ATP are produced from oxidative phosphorylation (with 2 FADH2)
Alpha cells secrete
Glucagon (raise the concentration of glucose and fatty acids in the bloodstream)
The liver secretes
Angiotensinogen (hormone system that regulates blood pressure and fluid balance)
The hypothalmus secretes
GnRH and TRH
Oxytocin is secreted by the
posterior pituitary
What is Tidal Volume
The air one inhales and exhales at a default, steady pace at rest
Which muscles possess striations (series of ridges, furrows or linear marks)
Skeletal + Cardiac
A female has 45 chromosomes, possessing only one X chromosome. She is sterile with no tangible ovaries. What condition does she possess?
Turner syndrome
Spermatogenesis occurs in which of the following?
Vas Deferens
The mesoderm gives rise to
Muscle, Bone, and Connective Tissue
Cuboidal epithelial tissues can be found in walls of
Tubules
The alveolus in lungs is an example of what type of what type of tissue?
Simple squamous epithelial tissue
