Question 68 (8 points) Match the following terms with the definition.
Column A
Column B
1
a. Lateral Moraine
2.
b. Crevasse
3
C. Horn
4.
d. Terminal Moraine
The process of losing ice by melting,
evaporation or calving
Unsorted and unlayered rock debris carried by
a glacier
Ice that breaks off from a glacier and becomes
an iceberg
A lake occupying a depression caused by a
glacier
A sharp peak formed where cirques but back
into a mountain on several sides
A body of till left behind after a glacier retreated
at the front of the glacier
A non-native boulder that was carried a long
distance by a glacier
The formation caused by the differences in
velocity within a glacier
5.
e. Till
6.
f. Accumulation
7.
g. Calve
8.
h. Kettle
1. Erratic
J. Ablation

Column A

Column B

1

a. Lateral Moraine

2.

b. Crevasse

3

C. Horn

4.

d. Terminal Moraine

The process of losing ice by melting,

evaporation or calving

Unsorted and unlayered rock debris carried by

a glacier

Ice that breaks off from a glacier and becomes

an iceberg

A lake occupying a depression caused by a

glacier

A sharp peak formed where cirques but back

into a mountain on several sides

A body of till left behind after a glacier retreated

at the front of the glacier

A non-native boulder that was carried a long

distance by a glacier

The formation caused by the differences in

velocity within a glacier

5.

e. Till

6.

f. Accumulation

7.

g. Calve

8.

h. Kettle

1. Erratic

J. Ablation

step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.

looks like the answer is     c     to me!