with lab correll
,Due No due date Points 120 Questions 37 Time Limit 120 Minutes
Attempt History
Attempt Time Score
LATEST Attempt 1 77 minutes 83 out of 120 *
* Some questions not yet graded
Score for this quiz: 83 out of 120 * Submitted Jul 29
at 12:09am
This attempt took 77 minutes.
Question 1 Not yet graded / 2 pts
What enzyme is responsible for relieving the stress associated with the twisting and
untwisting of a DNA strand during replication?
Your Answer:
topoisomerase
Topoisomerase
Question 2 pts
,True or False. The energy required to add a nucleotide to a growing chain is supplied
by an exergonic reaction involving the hydrolysis of
tail.
, Correct!
Question 3 Not yet graded / 5 pts
Identify the type of signaling for each description: autocrine, endocrine, neuroendocrine,
paracrine or synaptic.
1. Long distance; ligands released from neurosecretory cells
2. Local type; ligand released from neuron and travels across synapse
3. Long distance; ligands released from gland or organ and then travels through
blood to target cell or tissue
4. Local type; cell releasing ligand responds to same ligand
5. Local type; ligand travels a short distance by diffusion to target cell or tissue
Your Answer:
1. neuroendocrine
2. synaptic
3. endocrine
4. autocrine
5. paracrine
1. Neuroendocrine
2. Synaptic
3. Endocrine
4. Autocrine