Match the item with its description. a. DNA b. RNA c. amino acids d. proteins e.
ID: 292750 • Letter: M
Question
Match the item with its description.
a.
DNA
b.
RNA
c.
amino acids
d.
proteins
e.
enzymes
f.
genes
g.
chromosomes
h.
carbon
i.
natural selection
j.
mutation
1. regulators of chemical reactions within a cell?.....
2.variations over time for an organism’s survival?.......
3.the backbone element of all living things?......
4. regulators of chemical reactions within a cell?
5. a long spiral molecule coded with information within the nucleus of a cell
.
a.
DNA
b.
RNA
c.
amino acids
d.
proteins
e.
enzymes
f.
genes
g.
chromosomes
h.
carbon
i.
natural selection
j.
mutation
Explanation / Answer
1. regulators of chemical reactions within a cell? is enzyme.
[Cells regulate their biochemical processes by inhibiting or activating enzymes. Enzymes lower the activation energies of chemical reactions; in cells, they promote those reactions]
2. variations over time for an organism’s survival? is genes.
[Variations are the changes caused in the genetic material thereby bringing about changes in the offspring. ]
3. The backbone element of all living things? is carbon.
[Proteins, DNA, carbohydrates, and other molecules that distinguish living matter are allcomposed of carbon compounds.]
4. regulators of chemical reactions within a cell is enzyme.
5. a long spiral molecule coded with information within the nucleus of a cell is DNA.
[DNA is found in nearly all living cells or in the cell nucleus. DNA (or deoxyribonucleic acid) is the molecule that carries the genetic information. Made of the globular protein tubulin, are attached in a spiral to form a long tube.]
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