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