Which of the following is a function of non-coding DNA?

act as switches to activate a gene

What is the role of stem cells in cell differentiation?

They are generalized cells that can lead to specialized cells

These cells can turn into specialized cells and back into generalized cells when needed

They are specialized cells that can lead to generalized cells

Some events that take place during the synthesis of a specific protein are listed below. Put them in the correct order.

DNA serves as a template for RNA production.

RNA moves from the nucleus to the cytoplasm.

Messenger RNA attaches to a ribosome.

Transfer RNA bonds to a specific codon.

Amino acids are bonded together.

Cells differentiate to perform different functions because

different genes are turned on or off inside that cell

all genes are turned on inside that cell

all genes are turned off inside that cell

different genes are turned on inside that cell

During the process of differentiation

only specific sections of DNA sequence are activated to determine the structure and functions of a body cell

all sections of DNA are activated to determine the structure of a body cell

ONLY ONE section of DNA are deactivated to determine the structure of a body cell

How can environmental factors affect gene expression?

b) By altering how a gene is expressed.

c) By directly changing gene function

When gene expression occurs

The gene is activated and used in protein synthesis

A gene is mutated with either an insertion or deletion

The gene is removed from the genotype in that cell

The gene is passed on to the daughter cells during mitosis

An individual's bone, muscle, and nerve cells all contain the exact same genes. What enables each cell type to perform different (specialized) activities?

the regulation of gene expression within each type of cell

the use of different methods of cell division

the mutation of genes within each cell type

Identify the process and the product of the process pictured here.

process = transcription; product = mRNA

process = translation; product = protein

process = replication; product = tRNA

process = recombination; product = polymerase

In this diagram, what does the structure numbered 1 represent?

the elongating amino acid chain

the elongating transfer RNA strand

the elongating nucleotide chain

In this diagram, what is the role of structure 2?

carries amino acids to the ribosome

directs the order of the message in a protein

attaches amino acids to each other in a protein

acts as a catalyst in controlling chemical reactions

Gene regulation and gene expression are processes used to:

help make sugars for cells in plants.

Gene expression is primarily regulated

in response to changing environmental conditions

in order to maintain homeostasis

during development as cells specialize

Prokaryotes do not regulate gene expression. All genes are always on.

The DNA is tightly wrapped around the histone proteins and the gene is methylated.

The gene is on and off at various times.

What is true of an active gene?

The DNA is more relaxed and can be transcribed by RNA.

The DNA is so compact that it can leave the nucleus and travel to the ribosome.

The DNA is tightly coiled around the histones and accessible by RNA.

These two mice are genetically identical. How do you explain the difference in their coat colors?

The brown mouse has been fed a diet that donated methyl groups that inactivated the agouti gene.

The brown mouse has a different form of the agouti gene.

The mice come from two different families.

The brown mouse was fed a diet that donated acetyl groups and inactivated the agouti gene.

The difference between DNA code and the epigenome is that the DNA code is

fixed for life, while the epigenome is flexible

flexible, while the epigenome is fixed for life

determined by the environment, while the epigenome is not

determined by one's stress level, while the epigenome is not

Which factor can affect the epigenome?

all of these factors can affect the epigenome

Which of these can cause a gene to be expressed more - that is, can cause more protein to be made from it?

removal of methyl groups from the DNA

loosening of how tight the DNA is coiled around histones

Select all that are true: Genes _____.

are specific nucleotide sequences

are located in a specific place on a chromosome

determine the traits of an organism

occur in numbers that are the same as the number of chromosomes

This model can be used as evidence to support which claim?

Chromosomes are found in the nucleus of all cells and they contain long strands of DNA and proteins.

Proteins are found inside of chromosomes and chromosomes make up proteins.

DNA makes up the majority of a cell and contributes to the functions of chromosomes.

Which of the following caused this snake to have two heads?

A cross between two types of snakes.

This model best shows...

A DNA sequence with a possible mutated gene.

A DNA sequence with more than one chromosome.

A DNA sequence with normal genes.

provides instructions to build a specific protein

acts as a switch to control turning on or off a specific gene

adding or removing methyl groups

Review for HS LS 3-1 Test

Authored by Erin Primm

Science

9th - 12th Grade

NGSS covered

Used 14+ times

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MULTIPLE CHOICE QUESTION

45 sec • 1 pt

In what way is the DNA of a nerve cell different from the DNA of a muscle cell?

The DNA is the same but each cell contains different genes

The DNA is the same but different genes are turned on in each cell

Each cell has its own unique DNA

The DNA is different, but each cell contains the same genes

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which sequence of DNA bases would pair with this partial strand
CAT TCA CTG

ATG TGA CAG

TAC ACT GTC

GTA AGT GAC

CAT TCA CTG

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A process in which DNA has the unique ability to make an exact copy of itself.

Replication

Translation

Transcription

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 organelle is DNA usually found in?

cell membrane

vacuole

chloroplast

nucleus

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Describes the twisted ladder-like shape of a DNA molecule

Nitrogen Base

Hexagon

Double Helix

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Fill in the blank: The sections of DNA that have instructions for the creation of proteins are called ______.

Genes

Non-coding DNA

Chromosomes

Nucleotides

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Review for HS LS 3-1 Test

In what way is the DNA of a nerve cell different from the DNA of a muscle cell?

Which sequence of DNA bases would pair with this partial strandCAT TCA CTG

A process in which DNA has the unique ability to make an exact copy of itself.

Why is DNA important?

Which organelle is DNA usually found in?

Describes the twisted ladder-like shape of a DNA molecule

Fill in the blank: The sections of DNA that have instructions for the creation of proteins are called ______.

Which of the following is a function of non-coding DNA?

What is the role of stem cells in cell differentiation?

Label this image:1= ​ (a) 2= ​ (b) 4= ​ (c) 7= ​ (d)

Access all questions and much more by creating a free account

Popular Resources on Wayground

Discover more resources for Science

Which sequence of DNA bases would pair with this partial strand
CAT TCA CTG

Label this image:
1= (a)
2= (b)
4= (c)
7= (d)