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Science Sem Exam
Test Description: Exam Review
Instructions: Answer all questions to get your test result.
1) DNA has four kind of ___ bases: adenine, guanine, thymine, and cytosine
A
phosphorus
B
nitrogen
C
carbon
D
hydrogen
2) During DNA replication __ new identical strands are formed
A
3
B
4
C
1
D
2
3) DNA is found in the ___ of the nucleus
A
nitrogen
B
golgi
C
plasma membrane
D
chromatin
4) DNA nucleotide consists of 5 carbon sugar called ___
A
deoxyribose
B
ribose
C
sucrose
D
glucose
5) When pairing, guanine always pairs with
A
itself
B
thymine
C
cytosine
D
adenine
6) A cell moves particles using energy against the concentration gradient by
A
Active transport
B
Osmosis
C
Facilitated diffusion
D
Passive trnasport
7) Large particle are engulfed, the enclosed by the cell membrane in a process called
A
Endocytosis
B
Diffusion
C
Osmosis
D
Exocytosis
8) If a cell is placed in salt water, water leaves the cell by
A
Diffusion
B
Active transport
C
Exocytosis
D
Osmosis
9) Which of the following is not a form of passive transport
A
Endocytosis
B
Osmosis
C
Diffusion
D
Facilitated difussion
10) When a plant cell is placed in the __ solution, there will be a loss of water causing the plant to wilt.
A
diffusion
B
hypotonic
C
hypertonic
D
isotonic
11) In the beginning, Mendel studied __ traits at a time and carefully recorded his data
A
3
B
2
C
1
D
4
12) Mendel used ___ plants in his experiment.
A
potato
B
carrots
C
pea
D
tomato
13) Mendel was the first person to succeed in predicting how __are passed to the next generation.
A
variable
B
color
C
Traits
D
hair
14) Mendel used ___ peas in his heredity studies
A
fast breeding
B
high breeding
C
slow breeding
D
true breeding
15) A ___ is the offspring of parents that have different forms of a trait.
A
hybrid
B
cell
C
gamete
D
chromosome
16) mendel is sometimes referred to as the father of ____
A
peas
B
genes
C
heredity
D
tomatoes
17) The plasma membrane is ___ boundary of a cell
A
floppy
B
stern
C
rigid
D
flexible
18) Selective permeablility allows ___molecules to pass through the plasma membrane
A
all
B
none
C
just depends
D
some
19) The __ mosaic model describes the plasma membrane and its molecules
A
floppy
B
fluid
C
solid
D
creepy
20) What kind of layer is the plasma membrane
A
quadra-layer
B
penta-layer
C
bilayer
D
tri-layer
*select an answer for all questions
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