Unit 6
Origin of Cells
Origin of Cells
Which organelle provides evidence that eukaryotic cells originated when large prokaryotes engulfed small free-living prokaryotes?
Chloroplast
Which molecule regulates the fluidity of cell membranes?
Cholesterol
Who in here has been on a 7 Man
Ari Carrier
What would show that a person has developed metastatic cancer?
Breast cancel cells found in a tumor in a lymph node
Who in here is spit sisters
Charlotte & Shayna
What is evidence for the endosymbiotic theory?
Mitochondria possess their own DNA.
Madison got with Brady Hudson
true or false
false
Insulin is a protein hormone that is secreted in repose to elevated blood glucose levels. When insulin binds to its receptors on liver cells, the activated receptors stimulate phosphorylation cascades that cause the translocation of glucose transporters to the plasma membrane. Based on this information provided, what best describes the role of insulin in this liver cell signal transduction pathway?
It acts as a ligand (insulin acts as a ligand)
Which hormone regulates the hours of sleep and wakefulness?
Melatonin
When do the ventricles contract?
When the action potential reaches the Purkinje Fibers
Sam Hoyle or Talbot or Preston
NONE OF THE ABOVE (sam circosta)
The salt concentration inside an animal cell is 1.8%. The salt concentration in the surrounded medium becomes 5%. what will be the likely response?
The cell will shrink from loss of water
Where is Anderson's favorite place to B.O.
Walnut Creek
When does condensation of chromosomes to chromatin occur?
Early prophase
What happens in the heart when epinephrine is secreted into the blood?
I. Pressure in the heart falls
II. The pulmonary artery transports oxygenated blood at a faster rate
III. The sinoatrial node increases the rate of electrical signals
II and III only
Why do scientists think LUCA originated around hydrothermal vents?
LUCA had genes that show it could live in extreme temperatures
What happens to the cell surface area to volume ratio as a cell grows?
It decreases, so rate of gas exchange is too low
In the horse (Equus Caballus), the diploid number of chromosomes is 64. How many sister chromatids are present in the G2 phase of a somatic cell, such as a cell in the bone marrow of the chimpanzee?
128
Which processes are involved in the development of cancer?
I. Mutations occur in oncogenes
II. Oncogenes prevent cancer
III. Oncogenes affect cell cycle regulatory proteins
I and III only
What is Anderson's guilty pleasure in terms of video entertainment.
Mr. Beast
Who in here has gone through an Austin Sherlin phase
(multiple answers)
Charlotte, Kathryn, Anderson
Who in this room has gotten with Elias Rhabar
GOTTTEMMMMMMM
Paclitaxel is an anti-cancer drug that prevents tumor cells from dividing by mitosis as it inhibits cell processes at metaphase. How does paclitacel prevent cancer cells from dividing?
It inhibits the growth of the spindle fibers
What two movies did Charlotte and Xavier watch, answers must be in Chronilogical Order.
Annie, The Bee Movie
The light micrograph shows two blood vessels, an artery and a vein, in a transverse section. What explains the different shapes off these blood vessels?
there are fewer elastic fibres in the walls of veins