Macromolecules 1
Triglycerides are synthesized from?
glycerol and fatty acids
The pH of body fluids must remain fairly constant for the body to maintain _________________.
Homeostasis
A macromolecule is composed of smaller units called?
Monomers
What organelle takes up most of the space in the plant cell?
Vacuole
Which of the following fermentation methods can occur in animal skeletal muscles?
Lactic Acid Fermentation
The four elements that make up about 96% of body weight are ________.
Carbon
Hydrogen
Oxygen
Nitrogen
Which property explains why water droplets form spherical shapes?
Surface Tension
Carbohydrates and proteins are built up from their basic building blocks by the _______.
removal of water (dehydration)
What does rough endoplasmic reticulum have that smooth does not?
ribosomes
What substance is a hydrogen carrier during glycolysis?
NADH
Which of the macromolecules below could form structural parts of the cell, be enzymes, or be involved in cell movement or communication?
Proteins
Four sweet potato cores were placed in solutions of varying concentrations and were found to neither gain nor lose mass in a sucrose solution of 0.42M. What is the molarity (concentration) of the cores?
.42M
Which macromolecule makes up most of the cell membrane?
Lipids
The principal force driving movement in diffusion is the __________.
Concentration Gradient
The movement of which ion across the membrane from the intermembrane space to the matrix causes ATP synthase to spin and make ATP.
H+ ions
A carbohydrate indigestible by animals that makes plant cell walls and tissues rigid is:
Cellulose
What properties of water allows water to rise in a narrow glass tube?
adhesion and cohesion
Which macromolecule contains carbon, hydrogen, and oxygen in a 1:2:1 ratio?
Carbohydrates
Which compound contains the carbon released from glucose?
CO2
The products of photosynthesis are the ____________.
Reactants of Cellular Respiration
Nucleotides are composed of?
phosphate group
nitrogen containing base
5-carbon sugar
Why is water able to dissolve many ionic and polar substances?
Water is polar
A long-distance runner eats a meal high in carbohydrates before a race. Why are carbohydrates the most effective macromolecule for this purpose?
They provide quick energy that cells can easily access
A scientist removes lysosomes from an animal cell. Which problem is most likely to occur?
The cell cannot break down waste and worn-out organelles
What accounts for the different number of ATP molecules that are formed through cellular respiration?
whether oxygen is present or not