Liv Env: Cells Exam Prep (Test 1)

3) salt water

A red onion cell has undergone a change, as represented in the diagram below This change is most likely due to the cell being placed in 1) distilled water 2) light 3) salt water 4) darkness

4) distilled water

A wet mount of red onion cells as seen with a compound light microscope is shown to the right Which substance would most likely be used to return the cell to its original condition ? 1) starch indicator 2) dialysis tubing 3) glucose indicator solution 4) distilled water

4) chloroplasts

An enzyme known as rubisco enables plants to use large amounts of carbon dioxide. This enzyme is most likely active in the 1) nucleus 2) vacuoles 3) mitochondria 4) chloroplasts

3) mitochondrion

An organelle that releases energy for metabolic activity in a nerve cell is the 1) chloroplast 2) ribosome 3) mitochondrion 4) vacuole

2) cell membrane

Damage to which structure will most directly disrupt water balance within a single celled organism ? 1) ribosome 2) cell membrane 3) nucleus 4) chloroplast

1) organelles

Homeostasis in unicellular organisms depends on the proper functioning of 1) organelles 2) insulin 3) guard cells 4) antibodies

4) organelles present in single celled organisms act in a manner similar to organ systems

Humans require organ systems to carry out life processes. Single celled organisms do not have organ systems and yet they are able to carry out life processes. This is because 1) human organ systems lack the organelles found in single celled organisms 2) a human cell is more efficient than the cell of a single celled organism 3) it is not necessary for single celled organisms to maintain homeostasis 4) organelles present in single celled organisms act in a manner similar to organ systems

4) metabolic processes

In a cell, all organelles work together to carry out 1) diffusion 2) active transport 3) information storage 4) metabolic processes

4) ribosomes

In a cell, information that controls the production of proteins must pass from the nucleus to the 1) cell membrane 2) chloroplasts 3) mitochondria 4) ribosomes

1) Cell membrane

In the cell which structure is responsible for the excretion of most cellular wastes? 1) Cell Membrane 2) Nucleus 3) Lysosome

3) cell membrane

In the human body oxygen is absorbed by the lungs and nutrients are absorbed by the small intestine. In a single celled organism, this absorption directly involves the 1) nucleus 2) chloroplasts 3) cell membrane 4) chromosomes

3) theory

The current knowledge concerning cells is the result of the investigations and observations of many scientists. The work of these scientists forms a well accepted body of knowledge about cells. This body of knowledge is an example of a 1) hypothesis 2) controlled experiment 3) theory 4) research plan

3)structure

The function of a cell depends primarily on its 1) life span 2) color 3)structure 4) movement

1) a nucleus

The largest amount of DNA in a plant cell is contained in 1) a nucleus 2) a chromosome 3) a protein molecule 4) an enzyme molecule

3) ATP

The process of active transport requires the most direct use of 1) carbon dioxide 2) amino acids 3) ATP 4) glucose

1) storage

What is the main function of a vacuole in a cell ? 1) storage 2) coordination 3) synthesis of molecules 4) release of energy

1) 1

Which cell structure contains information needed for protein synthesis ? 1) 1 2) 2 3) 3 4) 4

3) ribosome --- synthesis of proteins

Which organelle is correctly paired with its specific function ? 1) cell membrane --- storage of hereditary information 2) chloroplast --- transport of materials 3) ribosome --- synthesis of proteins 4) vacuole --- production of ATP

3) organelles--- cells--- tissues--- organs--- organ systems

Which sequence represents the correct order of levels of organization found in a complex organism ? 1)cells--- organelles--- organs--- organ systems--- tissues 2) tissues--- organs--- organ systems--- organelles--- cells 3) organelles--- cells--- tissues--- organs--- organ systems 4) organs--- organ systems--- cells--- tissues--- organelles

2) active transport, recognition of chemical messages,protection

Which set of functions is directly controlled by the cell membrane ? 1) protein synthesis,respiration, digestion of food molecules 2) active transport, recognition of chemical messages,protection 3) enzyme production, elimination of large molecules, duplication of DNA codes 4) release of ATP molecules, regulation of cell reproduction, food production

2) Some cells in the system may be different from the other cells in the system, but all cells are coordinated and work together

Which statement describing the cells in a body system is correct ? 1) Each cell in the system is identical to the other cells in the system, and each cell works independently of the other cells 2) Some cells in the system may be different from the other cells in the system, but all cells are coordinated and work together 3) Each cell in the system is different from the other cells in the system, and each cell works independently of the other cells 4) All cells in the system are identical to each other and work together

3) The cell membrane forms a barrier that keeps all substances that might harm the cell from entering the cell

Which statement regarding the functioning of the cell membrane of all organisms is not correct ? 1) The cell membrane forms a boundary that separates the cellular contents from the outside environment 2) The cell membrane is capable of receiving and recognizing chemical signals 3) The cell membrane forms a barrier that keeps all substances that might harm the cell from entering the cell 4) The cell membrane controls the movement of molecules into and out of the cell

3) organelles

Which structures carry out life functions within cells ? 1) tissues 2) organ systems 3) organelles 4) organs

1) cell membrane

which cell structure that directly controls the movement of molecules into and out of the cell ? 1) Cell membrane 2) Cell Wall 3) Ribosome