Human Physiology Test 2

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c

Dur to the role smooth ER plays in cholesterol metabolism, the cells of which organ should contain many of these organelles: a)kidney b)spleen c)liver d)adrenal gland e)fat cells

b

which of the following correctly describes tRNA: a)it stands for total RNA b)it works with ribosomes in protien synthesis c)it transfers messges from genes to mRNA d)it transfers messages from proteins back to genes e)it is the only kind of RNA that is single stranded

d

a gene under goes ___ to produce its correspodning mRNA: a)transference b)replication c)translation d)transcription e)interference

c

a codon on mRNA is a sequence of ___: a)three amino acids arranged in tandem b)six amino acids arranged in tandem c)three bases that code for a specific amino acid d)six bases that code for a specific amino acid e)random bases that code for a gene

e

Pancreatic cells produce large amounts of insulin, with is synthesized in the _______ of the cell: a)peroxisomes b)nucleus c)nucleolus d)mitochondria e)cytoplasm

e

in which of the following locations is cardiac muscle found: a)lining of the urinary system b)capillary walls c)bone d)spinal cord e)heart

b

the plasma membrane: a)is the gene-containing control center that directs all cellular activities b)regulates the entry and exit of cell membranes c)is the site of most cellular activities d)is the site where ribosomes are assembled prior to their migration into the cytoplasm e)defines the limits of the nucleus

a

a human cell culture is placed in a relatively concentrated salt solution. Which of the following is likely to occur: a)water moves out of the cell by osmosis b)water moves into the cell by osmosis c)salt moves out of the cell by diffusion d)salt moves into the cell by diffusion e)the cell will remain unchanged

c

DNA replication occurs ___________: a)in the cytoplasm b)only in the presence of RNA c)during interphase d) in ribosomes e)during cytokinesis

e

which of the following correctly describes metaphase of mitosis: a)daughter chromosomes are pulled towards the poles b)a cleavage furrow begins to form c)the nuclear envelope is formed again d)the cell stays dormant e)chromosomes are aligned in the center of the cell

c

Upon DNA replication, a double stranded DNA molecule gives rise to: a)single straned DNA molecule b)two single stranded DNA molecules c)two double stranded DNA molecules d)two mRNA molecules e)two tRNA molecules

a

which of the following best describes the flow of genetic information in the cell: a)DNA-mRNA-protein b)mRNA-DNA-protein c)tRNA-DNA-protein d)DNA-tRNA-mRNA-protein e)DNA-protein

b

smooth muscle is found in the: a)heart muscle b)intestine c)muscle of the upper arm d)liver e)kidney

b

which of the following correctly describes smooth muscle tissue: a)they are voluntary muscles b)they are involuntary muscles c)they connect muscles to bones d)they connect muscles to bones d)they connect bones to bones e)their function is to store fat

e

the primary lipids found in the cell membrane are: a)fat-soluble vitamins and neutral lipids b)fat-soluble vitamins and cholesterol c)neutral lipids and cholesterol d)neutral lipids and glycolipids e)phospholipds and cholesterol

b

the molecules in the cell membrane that serve as receptors or binding sites for hormones or other chemical messengers are the: a)nucleic acids b)proteins c)cholesterol molecules d) carbohydrates e)lipids

d

all of the following are found in the nucleus except: a)DNA b)chromatin c)nucleolus d)centrioles e)chromosomes

c

two types of passive transport are: a)osmosis and endocytosis b)endocytosis and diffusion c)diffusion and filtration d)filtration and exocytosis e)exocytosis and endocytosis

a

which of the following correctly describes the extracellular matrix: a)non-living materialthat surrounds the cell b)living material that surrounds the cell c)non-living material that is found in the cytoplasm d)living material that is found in the cytoplasm e)nucleoplasm found int he nucleus

d

two types of active transport are: a)simple diffusion and cellular secretion b)cellular secretion and facilitated diffusion c)facilitated diffusion and phagocytosis d)solute pumping and bulk transport e)bulk transport and filtration

c

the nucleic acid responsible for bringing the amino acids to the "factory" site for protein formation is the: a)rRNA b)mRNA c)tRNA d)DNA e)ATP

shape

epithelial tissue is classified based on layers and _____.

interphase

the phase in the cell life cycle that can best be described as the metabolic phase is ________..

sperm

the only example of a flagellated cell in the human body is the __.

muscle

microfilaments play a role in producing changes in cell shape and are important in the function of _______ cells.

semi-permeable

because the plasma membrane allows some substances to pass through while others are excluded means it is _________.

kidney

filtration is a process important in the following organ. ________.

ribosomes

name the organelle/part of the cell that corresponds to: protein synthesis

nucleolus

name the organelle/part of the cell that corresponds to: site of ribosome production:

nucleus

name the organelle/part of the cell that corresponds to: contains genetic material:

plasma membrane

name the organelle/part of the cell that corresponds to:controls the entry and exit of substances through the cell:

microvilli

name the organelle/part of the cell that corresponds to: fingerlike-projections that increase surface are for absorption:

smooth ER

name the organelle/part of the cell that corresponds to:cholesterol synthesis, fat metabolism and detoxification:

rough ER

name the organelle/part of the cell that corresponds to:where numerous ribosomes are attached:

cytoplasm

name the organelle/part of the cell that corresponds to: fluid that suspends the organelles in the cell:

lysosome

name the organelle/part of the cell that corresponds to: contains enzymes that digest non-usable materials in the cell:

mitochondria

name the organelle/part of the cell that corresponds to: carries out cellular respiration:

false

true or false: passive diffusion requires the input of energy from ATP

false

true or false: osmosis the movement of solutes from a region of lower concentration of solute to a region of higher concentration of solute

true

true or false: in exocytosis, there is a movement of substances out of the cell:

true

true or false: pinocytosis is a form of endocytosis

false

true or false: DNA replication occurs during metaphase of mitosis

false

true or false: During prophase, the daughter chromosomes are pulled towards the poles

true

true or false: blood is a type of connective tissue

true

true or false: DNA replication and transcription occur during the same phase of the cell life cycle

false

true or false: mitosis can not occur without cytokinesis

false

true or false: following transcription, the two daughter chromatids are held together by the centrioles

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