Free Printable Unit 4 Genetics Review

Worksheets

Unit 4 Genetics Review

Total questions: 40

Worksheet time: 33mins

Name

Class

Date

Which of the following best describes a DNA molecule?

double helix

contains ribose

made of amino acids

contains Uracil

Why is DNA important?

it is very small and very complicated

it's in everything

it serves as the blueprint for traits of all living things

because we eat it every day for energy

Which 2 molecules form the sides (backbone) of the DNA ladder?

deoxyribose sugar and adenine

deoxyribose sugar and a hydrogen bond

deoxyribose sugar and the nucleus

deoxyribose sugar and phosphate

Nitrogenous bases are joined by which type of bond?

polar bonds

ionic bonds

covalent bonds

hydrogen bonds

Cytosine always pairs with

Adenine

Thymine

Uracil

Guanine

Nucleotides are made up of a sugar, phosphate, and..?

nitrogenous base

nucleic acid

cholesterol

fatty acid

What is the complement to the DNA strand below:
5'-ATGCCAT-3'

5'-TACGGTA-3'

3'-TACGGTA-5'

3'-ATGGCAT-5'

5'-ATGGCAT-3'

Which of the following is not a nitrogen base found in DNA?

Thymine

Uracil

Guanine

Adenine

The sugar in DNA is ____________________.

deoxyribose

ribose

10.

The sugar in RNA is ____________________.

deoxyribose

ribose

11.

I am a single strand.

DNA

RNA

12.

Which enzyme has the job of unzipping the double helix?

Helicase

Polymerase

Ligase

Primerase

13.

If a strand reads:
3' A A A T T T C 5'
The matching strand would read...

5' T T T A A A G 3'

3' T T T A A A G 5'

5' A A A T T T C 3'

3' U U U A A A G 5'

14.

This picture is illustrating the ____ nature of DNA.

anti-parallel

deoxyribosic

helical

radioactive

15.

DNA replication turns one strand of DNA into two new strands of DNA. What percent of each new strand is the old strand?

Half of each new DNA is the old DNA

The old strand of DNA was digested, so none

The new DNA is entirely made up of the old DNA

About every sixth base comes from the old DNA

16.

Sometimes, DNA is called "semi-conservative." Why might this be?

The old strand is "conserved" and used to make the new strands

Uracil is "conserved" in that it is only used to make the new strands

ATP is "conserved" via the usage of facilitated diffusion

Ligase is "conserved" in that it is denatured by the process

17.

In what process is mRNA synthesized?

Transcription

Translation

DNA Replication

Mitosis

18.

Where does TRANSCRIPTION occur?

Nucleus

Ribosome

Cytoplasm

Mitochondria

19.

Why must transcription occur where DNA can be found?

because DNA can't leave the nucleus

because ribosomes are in the nucleus

because DNA polymerase is found there

because helicase unzips the DNA

20.

How many nucleotides equal 1 amino acid?

21.

TRANSCRIBE this DNA sequence: TACGTTACT

AUGCAAUGA

ATGCAATGA

AUGGATUGA

TACGTTACT

22.

Which of the following are differences in the structure between RNA and DNA

DNA uses deoxyribose sugar, RNA uses sugar ribose

DNA pairs Adenine with Uracil, RNA pairs Adenine with Thymine

DNA is a double helix, RNA is a single helix

DNA pairs Adenine with Thymine, RNA pairs Adenine with Uracil

23.

Which organelle is the location where protein is made?

Ribosome

Nucleus

Cytoplasm

Nucleotide

24.

When these bond together, they form a protein

Amino Acids

Peptide Bonds

Ribose

Nucleotides

25.

What is the term for a three-nucleotide sequence that codes for an amino acid?

base

codon

amine

serine

26.

The process to go from DNA to mRNA is _______

translation

transcription

replication

27.

The process to go from mRNA to a protein is called ____

transcription

rRNA

replication

translation

28.

What amino acid is represented by the codon UUA?

Phenylalanine

Tyrosine

Leucine

Stop codon

29.

Does the order of amino acids in a protein matter?

YES!

NO!

30.

How many base pairs would be needed to chain together 3 amino acids?

31.

CROSSING OVER INCREASES

LIFE SPAN

GENETIC VARIATION

THE NUMBER OF OFF-SPRING

ALL ARE TRUE

32.

CROSSING OVER TAKES PLACE DURING

PROPHASE II

PROPHASE I

INTERPHASE

METAPHASE I

33.

WHAT TYPE OF CELLS STORE THE GENETIC INFORMATION THAT IS PASSED TO OFF-SPRING

BODY CELLS

MITOSIS

EGG

SPERM

EGG AND SPERM

34.

MEIOSIS

REDUCES THE NUMBER OF CHROMOSOMES BY ONE HALF

PRODUCES UNIQUE SEX CELLS-1N

ALLOWS TRAITS TO BE PASSED TO OFFSPRING

ALL ARE TRUE

INCREASE GENETIC VARIATION

35.

FERTILIZATION OCCURS WHEN

THE SPERM UNITES WITH THE EGG

THE SPERM UNDERGO MEIOSIS

THE EGG UNDERGOES MEIOSIS

THE EGG AND SPERM UNDERGOES MEIOSIS

36.

MEIOSIS PRODUCES 4 CELLS-THE CHROMOSOME NUMBER IS ...

DIPLOID

HAPLOID

37.

NORMAL HUMANS HAVE 46 CHROMOSOMES, HOW MANY WILL THE GAMETE CELLS HAVE AFTER MEIOSIS?

38.

Females have ____ and males have _____ chromosomes.

XX, XY

XY, XX

XX, XX

XY, XY

39.

Identify the phase:

Metaphase I

Metaphase II

Anaphase I

Anaphase II

40.

Identify the phase.