Wilson B

I spent 6 hours on a lab report and......all i got was a 7.8/10!

I wanted to make sure I got an A and it seems like my professor just wants to mark up the page to raise her level of "power"?

Also, I wrote that the melting point range is a way to determine the identity of a chemical substance because it is an intensive property. She wrote in red text next to it: What type of property?... What do you think she means by that, I asked her and she said I think you mean a physical property, however, I was taught physical properties are both intensive and extensive... so I thought I would be more correct in saying intensive

Questions:

-Do you think that some professors grade hard to feel more "powerful"?

-What is wrong in me saying a melting point range is a way to determine the identity of a chemical substance because it is an intensive property

How much time do Organic Chemistry professors spend on bond-line drawings and resonance structures in a regular semester?

Title: Introduction to Organic Laboratory Techniques: A Microscale Approach

Author: PAVIA

I've been looking for this for 30 minutes now but I haven't got any luck, first one to help me find a torrent for this gets the points, thanks for your help!

You have .2 M of chemical X in a solution. You want to make a .8 M solution of chemical X in a 725 mL solution. The molar mass of the chemical is 365 grams per mole. You have an unlimited amount of chemical X at your disposal. Show how to make this solution using the minimal amount of resources possible. Please show your work thanks!

Is it possible to get caught downloading copyrighted music many years ago? How long is it until you're considered "safe?" Also, I heard that it is safe to download torrents as long as you don't recieve the full file from one person? I live in the US. Thanks!

Where is the sperm created in gymnosperms?

Is pollen considered both a gametangia and a male gametophyte???? Please give a brief explanation too, thanks!

Sometimes when I dream, I hear music and when I wake up the song is still playing in my head...

Is this normal? Is it healthy? Any additional information would be great, thanks!

Sometimes, I see a multicolored "pixel," usually a whitish color in my eyes. Somedays I see it and somedays I don't, just curious.

Is it normal to see greenish colors when you first come inside from a sunny day? (even when not looking at the sun or near it)

As a muscle relaxes action potentials no longer travel down the motor neuron and no new ACh is released. The ACh present in the synaptic cleft...

A.) is actively transported back into the synaptic bulb.

B.) is destroyed by acetyl transferase

C.) can no longer bind to the receptor sites on the motor end plate.

D.) is destroyed by acetylcholinesterase.

E.) remains bound to the receptor on the motor end plate.

A molecule of ATP is needed twice for each complete cycle of a power stroke. ATP is needed to...

A.) cock the myosin head into its high-energy extended position and provide the energy for the power stroke.

B.) release the low-energy myosin head and hydrolyze ATP to form the high-energy myosin head

C.) bind the myosin head to the active site of the thin filament and provide the energy for the power stroke.

D.) change the shape of the troponin-tropomyosin complex and provide the energy for the power stroke.

E.) release the low energy actin and hydrolyze ATP to form high energy actin.

When smooth muscle exhibits dual innervation, it

a.) has two nerve fibers for each muscle fiber.

b.) has two muscle fibers for each nerve fiber.

c.) is supplied by both the autnomic and somatic nerve fibers.

D.) is supplied by both sympathetic and parasympathetic nerve fibers.

E.) exhibits both synapses and varicosities

A.) bursae popping air.

B.) bone grinding against bone.

C.) roughened cartilage moving.

D.) ligaments slipping over bones.

E.) calcium deposits on articular cartilage.

If two bones are joined so firmly together they cannot move, they form...

A.) a diarthrosis

B.) a fibrous joint.

C.) a syndesmosis.

D.) a synarthrosis.

E.) a symphysis.

A structurally classified joint which has no synovial cavity and is held together by ligaments is termed

A.) fibrous

B.) cartilaginous

C.) bony

D.) synovial

E.) connective

The joints between sacral vertebrae, between the bony plates in the skull, the epiphyseal plate, and the joint between the first ribs and sternum all have this in common.

A.) They are all jointed by fibrous tissue

B.) They are all joinetd by hyaline cartilage.

C.) They all ossify as you get older.

D.) They are all examples of sutures.

E.) They are all examples of synchondroses.

As you take a bite from an apple, you are using mainly ___ of the mandible.

A.) protraction and retraction

B.) eversion and inversion

C.) lateral and medial excursion

D.) adduction and abduction

E.) depression and elevation

Suppose you are looking at the back of your hand and you turn your fingers upward to admire a new ring. A motion employed in this would be

A.) dorsiflexion of the hand.

B.) hyperextension of the wrist.

C.) extension of the wrist.

D.) flexion of the wrist.

E.) hyperextension of the metacarpophalangeal joints.

A.) bone only.

B.) bone and bone marrow only.

C.) bone, tendons, and ligaments only.

D.) embryonic tissue that later turns into bone.

E.) all tissues of the skeletal system

A.) bone only.

B.) bone and bone marrow only.

C.) bone, tendons, and ligaments only.

D.) embryonic tissue that later turns into bone.

E.) all tissues of the skeletal system