Science Sem Exam: Question Preview (ID: 28451)

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