Biology Unit 3

Question 1

Hershey and Chase used a technique called radioactive labeling to trace the fate of DNA and

Accepted Answer

protein

Question 2

During which phase does the chromosomes slowly separate to opposite ends of the cell

Accepted Answer

anaphase

Question 3

What is used to help predict the offspring of a cross?

Accepted Answer

Punnett squares

Question 4

DNA replication takes place only once during

Accepted Answer

Meiosis

Question 5

Why does nondisjunction occur?

Accepted Answer

sister chromatids do not separate

Question 6

Meiosis produces __________ in gametes

Accepted Answer

genetic variations

Question 7

Who likes biology most?

Accepted Answer

George Washington Carver

Question 8

The experiment with what gave item insight to the inheritance of traits?

Accepted Answer

garden pea plant

Question 9

Selective breeding produces organisms with

Accepted Answer

desired traits

Question 10

What is DNA?

Accepted Answer

the genetic material that contains a code for proteins

Question 11

A hybrid is a (an)

Accepted Answer

heterozygous organism

Question 12

Who did the study of genetics begin with?

Accepted Answer

Gregor Mendel

Question 13

The study of life

Accepted Answer

biology

Question 14

A mutation is any mistake or change in

Accepted Answer

DNA sequence

Question 15

What process produces a new copy of an organism's genetic information to a new cell?

Accepted Answer

replication

Question 16

In DNA cytosine always forms hydrogen bonds with

Accepted Answer

guanine

Question 17

What disorder can be identified in a karyotype with an extra chromosome on 21?

Accepted Answer

Down syndrome

Question 18

What could explain a human karyotype showing 47 chromosomes?

Accepted Answer

trisomy

Question 19

Lethal genetic disorder caused by a dominant allele

Accepted Answer

Huntington's disease

Question 20

Which process divides a cell's nucleus and nuclear material?

Accepted Answer

mitosis

Question 21

The nitrogen base for DNA is thymine but the nitrogen base for RNA is

Accepted Answer

uracil

Question 22

How many pairs of chromosomes does each human have?

Accepted Answer

23

Question 23

When DNA replicates, it results into four _________ gametes

Accepted Answer

haploid

Question 24

What are the basic building blocks of DNA and RNA?

Accepted Answer

nucleotides

Question 25

Mutations in body cells can sometimes result in

Accepted Answer

cancer

Question 26

What determines gender in humans?

Accepted Answer

the X and Y chromosomes

Question 27

A small ring of DNA found in a bacterial cell is called a

Accepted Answer

plasmid

Question 28

During which phase do the chromosomes line up in the center of the cell

Accepted Answer

metaphase

Question 29

ATP is the most commonly used source of what in a cell?

Accepted Answer

energy

Question 30

In meiosis during which stage do the sister chromatids separate from each other?

Accepted Answer

anaphase II

Question 31

Small, circular, double stranded DNA molecules that occur naturally in bacteria & yeast

Accepted Answer

plasmids

Question 32

What is the process of making RNA from DNA called

Accepted Answer

transcription

Question 33

Any mistake in DNA sequence leads to

Accepted Answer

mutation

Question 34

A method used to determine the genotype

Accepted Answer

test cross

Question 35

Harmful traits can be passed to generations if both parents carry the

Accepted Answer

recessive allele

Question 36

The twisted ladder shape of DNA is called

Accepted Answer

double helix

Question 37

The process for separating DNA fragments by size

Accepted Answer

gel electrophoresis

Question 38

Which is found outside the nucleus

Accepted Answer

electrons

Question 39

Proteins are made up of________

Accepted Answer

amino acids

Question 40

Polyploid organisms have one or more extra sets of all________________

Accepted Answer

chromosomes

Question 41

Reproductive cells which pass on genetic traits form the parent to child are produced by

Accepted Answer

the process of meiosis

Question 42

Write the code for the connecting RNA code AGGACG

Accepted Answer

UCCUGC

Question 43

Which is the standard SI unit for mass?

Accepted Answer

kilogram

Question 44

Meiosis consist of how many sets of division?

Accepted Answer

two

Question 45

What are some effects of Albinism

Accepted Answer

Lack of color in eyes, skin or hair

Question 46

What carries information from the DNA in the nucleus out into the cytoplasm of the cell?

Accepted Answer

messenger RNA

Question 47

Chromosomes end in protective caps called

Accepted Answer

telomeres

Question 48

A diagram that traces the inheritance of a particular trait through several generations

Accepted Answer

pedigree

Question 49

What condition would trigger mitosis?

Accepted Answer

Cyclin builds up

Question 50

What is the code for the opposite side of the DNA code GATATTAC

Accepted Answer

CTATAATG

Biology Unit 3

Questions 50

Biology Unit 3

Questions 50