Chapter 12 Deck 4 (Slides 14- 18)

Question 1

In Prokaryotes the is no _____ – DNA molecules are located on a single circular chromosome in the cytoplasm

Answer 1

nucleus

Question 2

The DNA length in prokatyotes is So long that it must be greatly _____ to fit inside the bacteria cell (like stuffing a 300 meter rope into a backpack)

Answer 2

folded

Question 3

In Eurokyotes DNA is found on a number of ______s inside the nucleus

Answer 3

chromosomes

Question 4

The number of chromosomes ____ by species in Eukaryotes

Answer 4

varies

Question 5

DNA is packed very _____ly in Eukaryotes as well

Answer 5

TIGHTly

Question 6

Eukaryotes Contain DNA tightly wrapped around proteins called _______s

Answer 6

HISTONES

Question 7

Beadlike structures formed by histones are called

Answer 7

NUCLEOSOMES

Question 8

Nucleosomes pack with each other into COILS which are then packed together into ______s

Answer 8

Supercoils

Question 9

During most of the cell cycle the coils are more loosely wound as _______

Answer 9

CHROMATIN

Question 10

Before the cell undergoes mitosis, the coils wind tightly into _______s

Answer 10

CHROMOSOMES

Question 11

DNA REPLICATION is controlled by many _____s working together

Answer 11

enzymes

Question 12

In DNA Replication DNA unzips in portion being copied. This is called the REPLICATION _____

Answer 12

Fork

Question 13

BASE PAIRING RULE: In DNA Replication DNA ______ reads exposed nitrogen base on one strand and attaches a new base

Answer 13

POLYMERASE

Question 14

In DNA Replication the DNA polymerase then “_______” the base to check that it is the correct one, which cuts down on Mutations

Answer 14

proofreads

Question 15

Copying errors during DNA Replication are called

Answer 15

Mutations

Question 16

DNA polymerase works on both sides of old strands at same time in _____ directions

Answer 16

opposite