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1.Which of the following best describes the composition of the cell membrane?
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1.Which of the following best describes the composition of the cell membrane?

 It is mostly phospholipids with a smaller amount of proteins.

 It is mostly proteins with a smaller amount of phospholipids.

 It is mostly cholesterol with a smaller amount of phospholipids.

 It is mostly carbohydrates with a smaller amount of proteins.

 


2.Which of the following structures is responsible for manufacturing proteins?

 Lysosome 

 Mitochondria 

 Peroxisome 

 * Ribosome

 


3.Which of the following is a function of the smooth endoplasmic reticulum?

 Digests nutrients that enter the cell 

 Packages proteins and ships them to the golgi 

 Synthesizes lipids 

 Generates energy (ATP) for the cell 

 


4.Which of the following is most likely to diffuse across a membrane by simple diffusion?

 Cl-, K+ and Na+ 

 Large, polar molecules 

 Small, polar molecules

 Small, nonpolar molecules

 


5.Which type of transport requires energy to move a substance across the membrane?

 facilitated diffusion 

 simple diffusion 

 active transport 

 osmosis 

 


6,Which of the following is NOT a property required for life?

 respond to the environment 

 maintain homeostasis 

 ability to move 

 ability to reproduce 

 


7,Which of the following best describes an organ?


 A group of similar cells that perform a specific function

 Several organs which cooperate for a specific function

 A cluster of atoms bound by chemical bonds 

 Several different types of tissues that perform a specific function

 


8.Which of the following best describes a prokaryote?


 Cells possess membrane bound nucleus 

 Cells possess organelles 

 Cells are usually larger than eukaryotes 

 Examples include bacteria and archaea 

 


9.Which of the following are the Domains of life?

 Bacteria, Archaea, Eukarya 

 Fungi, Animalia, Plantae 

 Bacteria, Protista, Eukarya 

 Fungi, Animalia, Plantae 

 


10.What type of bond forms when atoms share electrons?


 Ionic 

 Hydrogen 

 Covalent 

 Van der Wal 

 


11.You are given an unknown molecule and told it contains only carbon and hydrogen in a long chain.


 It could be a carbohydrate, lipid or protein. 

 It is a carbohydrate 

 It is a lipid 

 


12.Which of the following occurs during interphase?


 a reduction in the size of the nuclear membrane 

 cytokinesis 

 cell growth and duplication (replication) of the chromosomes

 separation of newly formed DNA to opposite ends of the cell

 


13.The chromosomes coil up (condense) and the nuclear envelope breaks down during which phase of mitosis?


 interphase 

 prophase 

 metaphase 

 anaphase 

 cytokinesis 

 


14.Which of the following is a source of genetic diversity during meiosis?


 Independent assortment of homologous chromosomes

 Crossing over 

 Variation in the alleles of a gene 

 All of the answers apply 

 

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Subject: Biology, Science

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