IB Biology 1 Midterm Review

Calculate the total magnification that has a 10X ocular lens and a 50X objective lens. 

• 10X (x)  50X = 5,00X
• 10X + 50X = 60X
• 10X - 50X = -40X
• 10X = 50X

Scientists ______________and ___________discovered through experiments on RBC that the cell membrane is actually made up of a phospholipid bilayer

• Daveson and Danelli

• Singer and Niolson

• Gorter and Grendel

The sandwich model, is a phospholipid bilayer between two layers of ______________was suggested by ____________________ scientists

• proteins, Gorter and Grendel

• lipids, Gorter and Grendel

• proteins, Singer and Nicolson

• proteins, Daveson and Danelli

The fluid mosaic model suggests that ___________ are dispersed individually inserted into the phospholipid bilayer was suggested by scientists

• proteins, Gorter and Grendel

• lipids, Gorter and Grendel

• proteins, Singer and Nicolson

• proteins, Daveson and Danelli

A method of preparing electron microscopy called ________________________ splits the membrane along the middle of the phospholipid bilayer

• Freeze Frame

• Freeze Fracture

• Fracture Freeze

• Crystallography

In relatively warm temperatures, cholesterol makes the membrane _____________by ____________the movement of phospholipds

• more fluid, moving

• less fluid, restraining

• does nothing

Integral proteins penetrate the ______________________ core of the lipid bilayer.

• hydrophilic

• protein

• hydrophobic

• all of the membrane

_____________________are special proteins that have oligosaccharides attached to them and are important for cell-to-cell recognition and adhesion

• glycolipids

• glycoproteins

• integral protein

• peripheral proteins

What is the name of the structure labeled I?

• peripheral Protein

• integral Protein

• cholesterol

• glycoprotein

What is the name of the structure labeled D?

• hydrophillic

• hydrophobic

• glycoprotein

• glycolipid