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Biology: Semester 2 Midterm Review Flashcards | StudBud
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Biology: Semester 2 Midterm Review
Biology: Semester 2 Midterm Review
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Duplicate of Sem 2 Midterm Review: Transcription: #DNA
Flashcards
63 cards
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Questions
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Answers
1
The backbone of DNA is made up of what?
Sugar and phosphate
Nitrogenous bases
Phosphate
Sugar
2
The process where segments of sister chromatids switch during meiosis is called
interlocution
crossing over
interchromolog
crossing out
3
The major components of cell membrane are...
carbohydrates
nucleic acids
enzymes
lipids
4
What type of gene mutation is expressed in the following DNA strands?
Substitution
Deletion
Addition
5
Genes contain instructions for assembling...
pyrimidines
purines
nucleosomes
Proteins
6
In eukaryotic cells, the DNA of the organisms is stored in the
nucleus
cytoplasm
nucleoid
mitochondria
7
An example of an autotroph is
human
Dandelion
cow
mushroom
8
What process occurs during meiosis resulting in increased genetic variation?
cell differentiation
gamete production
crossing over
morphogenesis
9
A ______ mutation is caused by the addition or deletion of a single letter
Nonsense
Silent
Frameshift
Point
10
Who performs Cellular Respiration?
rocks, dirt and sticks
only animals
All living organisms
only plants
11
An advantage of asexual reproduction over sexual reproduction is
requires more time
provides genetic diversity
takes less time
12
DNA replicates in what phase?
Interphase
S
G2
G1
13
The cell grows for a final time in preparation for Mitosis to begin in what phase?
G1
S
G2
Interphase
14
The cell grows and takes in nutrients preparing for DNA replication in what phase?
S
G2
Interphase
G1
15
If an organism has 40 somatic cells, then the egg cells would contain how many chromosomes?
20
15
40
80
16
When homologous chromosomes match up, they form a structure called a
Gamete
Diploid
Triploid
Tetrad
17
Unlike mitosis, meiosis results in the formation of
four genetically identical cells
two genetically identical cells
four genetically different cells
two genetically different cells
18
What type of cells undergo Mitosis?
gametes
sex cells
no cells undergo mitosis
body cells
19
The following equation for
PHOTOSYNTHESIS
is as follows: H
2
O
+ CO
2
+ light --> C
6
H
12
O
6
+ O
2
true
false
20
The purpose of mitosis is
to accelerate cell growth
to break down new cells
to create genetic diversity
replace damaged or worn out cells
21
The cell rests and is in a non-dividing state in what phase?
G2
S
G1
Interphase
22
Cancer is a disorder in which some cells have lost the ability to control their
spindle fibers
size
growth rate
surface area
23
The process by which the cytoplasm divides into two daughter cells is called
telophase
cytophase
interphase
cytokinesis
24
What job do tRNA molecules have?
transporting new proteins
carrying instructions to ribosome
None of these
transferring amino acids to ribosomes
25
Where do cells spend most of their lifetime?
mitosis
interphase
cytokinesis
26
How many chromosomes do humans have in each bone cell?
12
46
none
23
27
The organelle that determines if the ER is rough or smooth and is responsible for making proteins is the _____.
mitochondria
centriole
lysosome
ribosome
28
What is cytokinesis?
splitting of chromosomes
division of cytoplasm
addition of centrioles
addition of chromosomes
29
What forms a base pair with guanine?
uracil
adenine
thymine
cytosine
30
Which of the following organelles would NOT be present in an animal cell?
mitochondria
ribosomes
cell membrane
chloroplast
31
A group of individuals of the same species that interbreed make up a
Gene pool
Species
Genetic drift
Population
32
During exercise, one maintains homeostasis by
Increasing CO2 levels
Stopping all other maintenance activities
Sweating
Decreasing CO2 levels
33
The two main stages of cell division are called
cytokinesis and mitosis
the M phase and the S phase
synthesis and cytokinesis
mitosis and interphase
34
In most cells photosynthesis takes place in the __________, and respiration takes place in the _________.
nucleus; chloroplast
chlorophyll; golgi body
mitochondria; chloroplast
chloroplast; mitochondria
35
Different species can share the same habitat, but competition among them is reduced if they
Increase their populations
Occupy different niches
Eat less
Reproduce at different times
36
What purpose does mRNA serve in protein synthesis?
transferring amino acids to ribosomes
carrying genetic instructions from the nucleus to the ribosomes
transporting new proteins
none of the above
37
Chromosomes form tetrads during
metaphase of meiosis II
prophase of meiosis II
metaphase of meiosis I
prophase of meiosis I
38
Which process occurs first in protein synthesis?
We don't make proteins
Transcription
translation
Protein synthesis isn't real
39
An example of a consumer is
lion
photosynthetic bacteria
algae
lily pad
40
Sexual reproduction requires ___ parents
more than 2
1
None
2
41
What are the building blocks for carbohydrates?
Polysaccharides
Monosaccharides
Disaccharides
Elements
42
Given the DNA strand: GTACCG what is the complementary DNA strand?
ACGTGA
TACGAG
CATCGA
CATGGC
43
When during the cell cycle is a cell's DNA replicated?
G1 phase
M phase
S phase
G2 phase
44
The branch of biology dealing with interactions among organisms and between organisms and their environment is called
Economy
Ecology
Recycling
Modeling
45
In humans, what substance is produced from the process of anaerobic fermentation?
fat
lactic acid
blood
alcohol
46
The community described in the previous question with a great diversity of species is called a _____ community
Tertiary
Climax
Pioneering
Primary
47
Which of the following is a nucleotide found in DNA?
deoxyribose + phosphate group + cytosine
deoxyribose + phosphate group + polymerase
adenine + phosphate group + thymine
cytosine + phosphate group + guanine
48
If an organism's diploid number is 12, its haploid number is
24
6
3
12
49
DNA has which sugar?
ribose
frosted flakes
deoxyribose
ribosome
50
The bases on a strand of mRNA are read three at a time, these so-called "words" of the genetic code are called what?
Nucleotides
Polypeptides
Codon
Anticodons
51
Which of the following represents the phases of mitosis in their proper sequence
interphase, prophase, metaphase, anaphase, telophase
prophase, metaphase, anaphase, telophase, cytokinesis
interphase, prophase, metaphase, telophase
prophase, metaphase, anaphase, telophase
52
What job does mRNA have?
carrying instructions to ribosomes
transferring amino acids
none of the above
transporting new proteins
53
If a cell has 20 chromosomes, each of its daughter cells will have ___ chromosomes after MITOSIS?
40
10
5
20
54
A eukaryotic cell has which of the following?
a nucleus
all of these
cell membrane
membrane-bound organelles
55
What is the maximum percentage of food energy available to the next trophic level?
100%
10%
.1%
1%
56
What organelle would not be found in an animal cell?
chloroplast
mitochondria
cell membrane
ribosome
57
The purpose of meiosis is to
create genetic diversity in offspring
decrease cell growth
create new somatic cells
replace worn out cells
58
Amino Acids are building blocks of proteins just as
lipids are building blocks of DNA
DNA is a building block of RNA
enzymes are building blocks of carbohydrates
monosaccharides are a building block of polysaccharides
59
Gametes are formed by the process of
replication
meiosis
mitosis
crossing-over
60
Transcribe the following DNA sequence: TAGCGA
GACTAA
TACGAT
ATCGCT
AUCGCU
61
All the interconnected feeding relationships in an ecosystem make up a food....
interaction
chain
web
network
62
The difference between DNA and RNA is RNA _____
has Uracil instead of Thymine
is single stranded
All of these are true
uses the sugar ribose instead of deoxyribose
63
Purple loosestrife is an aggressive, non-native flowering plant that is now destroying fields and wetlands across the co
It prevents insects from pollinating other plants
It pollutes the air
It interrupts the water cycle
It crowds out native plants