12 questions
What is homeostasis?
An organism's ability to regulate internal conditions
An organism's ability to regulate external conditions
an organisms ability to adapt to a changing environment over time
all of the chemical processes that occur within an organism
How do enzymes help maintain homeostasis?
by producing proteins
by slowing down bad chemical reactions
by increasing the rate of chemical reactions
they are not really that important
why does ice float?
Water's solid form is more dense than its liquid form because the molecules get closer together as heat is removed
water's solid form is less dense than its liquid form because the molecules take a crystal lattice structure as heat is removed.
Its liquid and solid forms have the same density so ice gets suspended in water
The densities of solid and liquid water are the same and ice stays on top because it is added at the top
In water, ______ is the positive part of the molecule
oxygen
carbon
dihydrogen monoxide
hydrogen
What is the monomer of a carbohydrate?
amino acid
simple sugar/ monosaccharide
nucleotide
fatty acid
What is the monomer of a protein
amino acid
simple sugar
nucleotide
fatty acid
what is the monomer of a nucleic acid
amino acid
simple sugar
nucleotide
fatty acid
What is the monomer of a lipid
amino acid
simple sugar
nucleotide
fatty acid
Which of the following is not a compound?
O2
CO2
C
H2O
CHONP
protein
carbohydrate
lipid
nucleic acid
_____ is a reaction that releases heat energy, _______ is a reaction that takes in heat energy
endothermic, exothermic
exothermic, endothermic
What does it mean to denature an enzyme?
Make it artificial
Change the shape so that it works better
Change the shape so that it no longer works.
changing the shape of the enzyme so that it works on a different substrate