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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
hydrogen
C
carbon
D
nitrogen
2) During DNA replication __ new identical strands are formed
A
3
B
4
C
2
D
1
3) DNA is found in the ___ of the nucleus
A
chromatin
B
nitrogen
C
plasma membrane
D
golgi
4) DNA nucleotide consists of 5 carbon sugar called ___
A
deoxyribose
B
glucose
C
ribose
D
sucrose
5) When pairing, guanine always pairs with
A
itself
B
thymine
C
adenine
D
cytosine
6) A cell moves particles using energy against the concentration gradient by
A
Active transport
B
Osmosis
C
Passive trnasport
D
Facilitated diffusion
7) Large particle are engulfed, the enclosed by the cell membrane in a process called
A
Diffusion
B
Endocytosis
C
Exocytosis
D
Osmosis
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
Osmosis
B
Diffusion
C
Endocytosis
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
isotonic
B
hypertonic
C
diffusion
D
hypotonic
11) In the beginning, Mendel studied __ traits at a time and carefully recorded his data
A
1
B
3
C
4
D
2
12) Mendel used ___ plants in his experiment.
A
tomato
B
potato
C
carrots
D
pea
13) Mendel was the first person to succeed in predicting how __are passed to the next generation.
A
variable
B
hair
C
color
D
Traits
14) Mendel used ___ peas in his heredity studies
A
fast breeding
B
true breeding
C
high breeding
D
slow 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
genes
B
peas
C
tomatoes
D
heredity
17) The plasma membrane is ___ boundary of a cell
A
rigid
B
floppy
C
flexible
D
stern
18) Selective permeablility allows ___molecules to pass through the plasma membrane
A
some
B
just depends
C
none
D
all
19) The __ mosaic model describes the plasma membrane and its molecules
A
creepy
B
fluid
C
floppy
D
solid
20) What kind of layer is the plasma membrane
A
tri-layer
B
quadra-layer
C
bilayer
D
penta-layer
*select an answer for all questions
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