which of the following properties is a result of hydrogen bonding b/w water molecules
all of the above
an unsaturated fatty acid is one in which:
carbon-carbon double bonds are present in the hydrocarbon chain
what is the main function of the nucleolus
it is the site of ribosome-subunit synthesis
a protein is a polymer of:
amino acids
energy used in cellular respiration can originate from
carbohydrates, proteins, and fats
glycogen belongs in the class molecules known as
polysaccharides
A nucleotide consists of a phosphate group, a pentose sugar, and ________, all linked together by covalent bonds
a nitrogen-containing base
Evaporation from the leaves of a tree will pull water up through the roots as an unbroken column throughout the entire height of the tree. This feat is possible because of which characteristic of water?
cohesion
an atom can be changed into an ion by adding or removing:
an electron
the number of proteins in an element, also called its __________, identifies the element
atomic number
Nuclear ________ are specialized holes in the _________- layered nuclear envelope that separates the nucleus from the _________.
pores; two; cytoplasm
The largest structure in a eukaryotic cell is the ________ and is surrounded by _______ membranes.
nucleus; two
which one of the following organelles is NOT found in both plant and animal cells?
central vacuole
which of the following is NOT an important structural feature on the surface membrane of an animal cell?
cell wall
science deals with
physical world
just four elements make up more than 90% of the human body. These include all of the following EXCEPT:
sodium
how an atom bonds with other atoms is chiefly determined by:
its electrons
certain molecules act like bank accounts for H+ ions because they can absorb excess H+ ions to keep a solution from becoming too acidic and release H+ ions to keep the solution from becoming too basic. Such molecules are called:
buffers
cellular respiration liberates energy which can be used to regenerate
ATP
lipids are made up of
triglycerides
which of the following statements about cell theory is CORRECT
both A) and B) are correct
which of the following statements about prokaryotes is INCORRECT
prokaryotes have circular pieces of DNA within nuclei
enzymes are composed of
amino acids
in DNA, adenine from one strand binds to ______ in the complementary strand
thymine
an electrically balanced atom of Chlorine (Cl) has 17 protons in its nucleus. How many electors does it have in its outermost shell?
7
product of fermentation (anaerobic respiration) in human:
lactic acid
plants absorb wavelengths in all but which part of the spectrum
green
the second orbital shell of an atom cal hold ______ electrons
8
packets of energy from the sun are called
photons
Science can define God
False
science deals with the physical world
True
plants have cell walls
true
viruses have a nucleus
false
amino acids make up proteins
true
lipids can serve as energy
true
ionic bonding involves the transfer of electrons
true
plants carry on cell respiration
true
aerobic means without oxygen
true
an ion is always negatively charged
false
which of the following properties is a result of hydrogen bonding b/w water molecules
all of the above
an unsaturated fatty acid is one in which:
carbon-carbon double bonds are present in the hydrocarbon chain
what is the main function of the nucleolus
it is the site of ribosome-subunit synthesis
a protein is a polymer of:
amino acids
energy used in cellular respiration can originate from
carbohydrates, proteins, and fats
glycogen belongs in the class molecules known as
polysaccharides
A nucleotide consists of a phosphate group, a pentose sugar, and ________, all linked together by covalent bonds
a nitrogen-containing base
Evaporation from the leaves of a tree will pull water up through the roots as an unbroken column throughout the entire height of the tree. This feat is possible because of which characteristic of water?
cohesion
an atom can be changed into an ion by adding or removing:
an electron
the number of proteins in an element, also called its __________, identifies the element
atomic number
Nuclear ________ are specialized holes in the _________- layered nuclear envelope that separates the nucleus from the _________.
pores; two; cytoplasm
The largest structure in a eukaryotic cell is the ________ and is surrounded by _______ membranes.
nucleus; two
which one of the following organelles is NOT found in both plant and animal cells?
central vacuole
which of the following is NOT an important structural feature on the surface membrane of an animal cell?
cell wall
science deals with
physical world
just four elements make up more than 90% of the human body. These include all of the following EXCEPT:
sodium
how an atom bonds with other atoms is chiefly determined by:
its electrons
certain molecules act like bank accounts for H+ ions because they can absorb excess H+ ions to keep a solution from becoming too acidic and release H+ ions to keep the solution from becoming too basic. Such molecules are called:
buffers
cellular respiration liberates energy which can be used to regenerate
ATP
lipids are made up of
triglycerides
which of the following statements about cell theory is CORRECT
both A) and B) are correct
which of the following statements about prokaryotes is INCORRECT
prokaryotes have circular pieces of DNA within nuclei
enzymes are composed of
amino acids
in DNA, adenine from one strand binds to ______ in the complementary strand
thymine
an electrically balanced atom of Chlorine (Cl) has 17 protons in its nucleus. How many electors does it have in its outermost shell?
7
product of fermentation (anaerobic respiration) in human:
lactic acid
plants absorb wavelengths in all but which part of the spectrum
green
the second orbital shell of an atom cal hold ______ electrons
8
packets of energy from the sun are called
photons
Science can define God
False
science deals with the physical world
True
plants have cell walls
true
viruses have a nucleus
false
amino acids make up proteins
true
lipids can serve as energy
true
ionic bonding involves the transfer of electrons
true
plants carry on cell respiration
true
aerobic means without oxygen
true
an ion is always negatively charged
false