Test
Biochemistry Dr Baker
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Preguntas del test (16)
1Placing a highly purified sample of material in a strong magnetic field refers to which process?
- AElectron Microscopy
- BNuclear Magnetic Resonance Spectroscopy
- CAtomic Force Microscopy
- DX-ray Crystallography
2Forming images by illumination with high energy electrons refers to what technique?
- AElectron Microscopy
- BX-ray Crystallography
- CNuclear Magnetic Resonance Spectroscopy
- DAtomic Force Microscopy
3The use of a laser to detect cantilever movement to build up an image of the surface of the sample refers to which technique?
- AX-ray Crystallography
- BElectron Microscopy
- CAtomic Force Microscopy
- DNuclear Magnetic Resonance Spectroscopy
4The use of x-rays on proteins to diffraction patterns refers to which technique?
- AX-ray Crystallography
- BNuclear Magnetic Resonance Spectroscopy
- CAtomic Force Microscopy
- DElectron Microscopy
5Pauli's exclusion principle state that?
- Aonly 2 electrons maybe placed in each orbital and these must have opposite spins
- BIf 2 or more orbitals of equal energy are available, 1 electron must be placed in each orbital until they are all half filled
6what does Hund's rule state?
- AOnly 2 electron electrons maybe placed in each orbital and these must have opposite spin
- BIf 2 or more orbitals of equal energy are available, 1 electron must e placed in each orbital until they are all half filled
7which arrangement does an sp3 hybridized orbital have?
- ATetrahedral
- BTrigonal planar
- Clinear
8Which arrangement does an sp2 hybridized orbital have?
- Alinear
- BTrigonal Planar
- CTetrahedral
9Which arrangement does an sp hybridized orbital have?
- Alinear
- Btetrahedral
- CTrigonal Planar
10What is a sigma bond?
- AWhere the overlap of 2 atomic orbitals is along a line drawn between the 2 nuclei
- BIt has regions of electron density above and below the inter-nuclei axis but none along the axis.
11What is a Pi Bond?
- AWhere the overlap of 2 atomic orbitals is along a line drawn between the 2 nuclei
- BIt has regions of electron density above and below the inter-nuclei axis but none along the axis
12Which of the following is true?
- AA Pi bond is stronger than a sigma bond
- BThe greater the electron density in the region of orbital overlap, the stronger the bond is
- CThe more s character, the longer and weaker the bond is
- DThe more s character, the smaller the bond angle is
13when does an ionic bond form?
- Awhen an electron is transferred from one atom to another
- BWhen 2 electrons are shared in 2 overlapping orbitals form 2 atoms with orbitals of similar energy
14When does a covalent bond form?
- AWhen 2 electrons are shared in 2 overlapping orbitals form 2 atoms with orbitals of similar energy
- BWhen an electron is transferred from one atom to another
15What is the primary structure of a protein?
- AThe linear sequence of the amino acids in the polypeptide chain
- BThe folding of the polypeptide backbone into regular structures
- CThe assembly of secondary structure elements into the native protein structure
- DThe way two or more polypeptides interact to form a functional complex protein
16Which of the following describes glycosylation?
- AThe reversible phosphorylation of the hydroxyl group of serine, threonine and tyrosine
- BThe acquisition of carbohydrate units of asparagine residues, increasing hydrophilicity and the ability to interact with other molecules
- CThe addition of a hydroxyl group to proline
Información
- Descripción
- Test sobre Biochemistry Dr Baker, creado por sam_fenton el 31/03/2015.
- Autor
- sam_fenton
- Idioma
- English
- Visitas
- 0
- Historial
- Creado el 31 mar 2015 · actualizado el 19 feb 2016
- Valoración
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