問題一覧
1
Explain the structural differences between DNA and RNA
DNA is double stranded helix while RNA is a single stranded helix
2
How does DNA control the cell?
DNA sequences
3
what factor affects the activity of an enzyme?
temperature.
4
what is exergonic?
an ——— reaction is a chemical reaction where the change in the free energy is negative. This indicates a spontaneous reaction if the system is closed and initial and final temperatures are the same.
5
what are the three main types of a nucleotide?
sugar, nitrogen base, phosphate
6
what is a substrate
the surface or material on or from which an organism lives, grows, or obtains its nourishment.
7
what is metabolism mean?
the chemical reaction that changes food to energy.
8
monomer of carbohydrates?
monosaccharides
9
monomer of a lipid
fatty acids
10
why do living things need nucleic acid?
storage and expression of genetic information
11
what elements are found in proteins?
carbon, hydrogen, nitrogen, and oxygen
12
what is a polymer?
large molecules bonding a series of building blocks
13
three main parts of a nucleic acid
nitrogenous base, pentose sugar, phosphate
14
why do living things need proteins?
cell shape and inner organization
15
What is a gene?
basic physical and functional unit of heredity.
16
a chemical reaction that involves the loss of water from the reacting molecule or ion. Requires energy!
dehydration synthesis
17
what are the elements found in nucleic acids?
carbon, hydrogen nitrogen, oxygen, and phosphorus
18
What is a monomer?
a molecule that can be bonded to other identical molecules to create a polymer
19
what is endergonic?
is a reaction that requires energy to be driven. —— means "absorbing energy in the form of work." The activation energy for the reaction is typically larger than the overall energy of the —— reaction
20
the chemical breakdown of a compound due to reaction with water. releases energy!!
hydrolysis
21
monomers of nucleic acids
nucleotides
22
what is an enzyme?
proteins that act like biological catalysts, which increase the chance of a chemical reaction.
23
monomer of proteins
amino acids
24
what are purines?
a heterocyclic aromatic organic compound that consists of two rings fused together. It is water-soluble.
25
what is an active site?
a region on an enzyme that binds to a protein or other substance during a reaction