The natural science that studies life and all living things

What is an enhancer sequence

when a regulatory protein binds to enhancer and transcription occurs

body of knowledge based on observations, descriptions, and experimentation

What is not a component of the Cell Theory?

cells die when the divide to reproduce

What is the order of the scientific method?

observation, hypothesis, prediction, experiment, conclusion

formation of units of nucleic acids like DNA

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Bio 101 Exam 1 Review

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Questions 55

Answers

1
What is biology
Fact based understanding of science and ability to critically evaluate
The natural science that studies life and all living things
Included what is derived from nonbiological components
A body of knowledge based on observation, description, and experimentation
2
what is a codon
A set of rules relating to nucleotide sequence
3 bases of mRNA
amino acid
a DNA strand
3
What do cells have the ability to do?
A & B
ability to reproduce
chemical reactions
ability to create chromosomes
4
How many elements are in a experiment?
2
4
6
3
5
What is the first step in translation
tRNA charging
initiation
elongation
RNA formation
6
What is not a process in the Scientific Method
observation
experiment
theory
hypothesis
7
What is apart of a prokaryotic cell
plasma membrane
cell membrane
mitochondria
organelles
8
What type of cells are present in Mitosis
prokaryotic cells
totipotent cells
functional cells
somatic cells
9
What is the operon
A group of several genes and elements that control their expression
A set of regulatory sequences
A & C
A regulation of gene expression
10
Transcription and translation have the same steps
True
False
11
Which is not an example of how mutation are created
radiation
chemicals
alcohol
UV light
12
A prokaryotic cells unicellular or multicellular
multicellular
unicellular
13
Genes are regulated by
transcription factors
all of the above
gene regulation
gene expression
14
What is the end result of Transcription
All of the above
mRNA
RNA
tRNA
15
Eukaryotes and Prokaryotes control gene expression in the same mechanisms
True
False
16
Where does transcription occur in eukaryotes
ribosome
cytoplasm
plasma membrane
nucleus
17
Gene expression is controlled by one thing
True
False
18
What is the last process in the Central Dogma
transcription
protein synthesis
translation
DNA replication
19
A proposed explanation for some phenomena based on limited evidence
Theory
Hypothesis
20
What cell is not the two main type of cells?
eukaryotes
bacteria
prokaryotic
21
A eukaryotic cells unicellular or multicellular
multicellular
unicellular
22
What is a cell composed of
genes
all of the above
chromosomes
DNA
23
What is not a part of a nucleotide?
nitrogen base
sugar
phosphate group
codon
24
What is an enhancer sequence
when a regulatory protein binds to enhancer and transcription occurs
creating polypeptide sequences
Binding of chemicals to DNA can block genes from being transcribed
regulation by altering its process and transport.
25
What are DNA bases connected by?
nitrogen containing bases
hydrogen bonds
sugar backbone
thymine
26
What happens if the Lac Operon is turned off
Lactose is present
Lactose is absent
27
What is not a process of transcription
transcription
translation
termination
initiation
28
What is a function of DNA
make more copies of itself
carry genetic information
make protein
all of the above
29
What is science?
body of knowledge based on observations, descriptions, and experimentation
A fact based understanding of the basics of biology and ability to evaluate
A natural phenomena that studies life and all living organisms
A & B
30
What is not a step in interphase
gap 2
DNA synthesis
DNA replication
gap 1
31
What does cytosine pair with
uracil
guanine
thymine
adenine
32
What is a cell?
smallest unit of life
a unit that functions independently
Most basic unit of life
all of the above
33
What is not a component of the Cell Theory?
the cell is the most basic unit of life
all living organisms are made up of cells
All cells arise from preexisting cells
cells die when the divide to reproduce
34
Eukaryotic gene control is regulated by
operons
mRNA
RNA polymerase
enhancer sequences
35
How many piece of DNA do prokaryotes have ?
150
10
3
1
36
What is not apart of a eukaryotic cell?
cell wall
ribosomes
mitochondria
plasma membrane
37
What is not a step in Mitosis
anaphase
interphase
metaphase
telophase
38
The goal of gene regulation is to
Both A & B
turn cells on
cell function
turn cells off
39
What is the order of the scientific method?
prediction, hypothesis, observation, experiment, conclusion
experiment, hypothesis, observation, predication, conclusion
hypothesis, prediction, experiment, observation, conclusion
observation, hypothesis, prediction, experiment, conclusion
40
What is not a characteristic of life
evolution
non-cellular
reproduction
metabolism
41
What is the Central Dogma
DNA →RNA→Protein
DNA →RNA→Protein
Protein→RNA→DNA
RNA→DNA→Protein
42
What is mRNA
double strand of DNA
speeds up reaction
single strand of DNA
none of the above
43
What is a nucleotide
none of the above
3 bases of DNA
codon
formation of units of nucleic acids like DNA
44
What is a not a gene?
Location or position on a chromosome
full set of DNA
sequence of bases in DNA
alternative version of an allele
45
How many steps are in Mitosis
6
3
2
5
46
What is not a difference between Meiosis and Mitosis
do not follow the same steps
Do not create the same daughter cell
One cell division vs two cell division
Do not occur in the same cells
47
What is a main difference between Eukaryotes and Prokaryotes
one has a nucleus ones doesn't
one has a cytoplasm one doesn't
one has a cell membrane one doesn't
one has DNA one doesn't
48
What is the structure of DNA
genes paired together
Double helix
single helix
composition of chromosomes
49
What kind of sugar does RNA have
fructose
pentose
ribose
deoxyribose
50
what is a process by which information in a genes sequence is used to synthesizing a gene product (communing a protein)
gene expression
gene regulation
51
What is not a DNA base
uracil
thymine
guanine
adenine
52
What is the end result of DNA replication
protein
mRNA
tRNA
more DNA
53
What is a NOT difference between DNA and RNA
DNA has two strand and RNA has one
RNA uses thymine and DNA uses uracil
Have different sugar bases
RNA uses uracil and DNA uses thymine
54
What is the different between independent and dependent variable?
dependent is what is being changed
B & C
independent is what stays the same
independent is what is being changed
55
What is not an example of the main mutations
base substitution
base deletion
base addition
base multiplication

Bio 101 Exam 1 Review Flashcards | StudBud