biology ch 3

which structure selectively regulates the transport of substances into and out of a plant cell? a) Plasma membrane b) cell wall c) nucleus d) chloroplast

A) plasma membrane

If a cell had a damaged central vacuole, it would have difficulty performing what function? a) Storing water b) converting light energy into food molecules c) converting food energy into cellular energy d) assembling lipids

A) storing water

Which form of transport requires the expenditure of energy? a) facilitated diffusion b) active transport c) passive transport d) osmosis

B) Active transport

which of the following statements is correct regarding archaea cells? a) archaea cells are found only in extreme environments b) Archaea cells are founds everywhere on Earth, just like bacteria cells. c) bacteria and archaea cells are both in the same domain the the classification of life d) archaea cells contain organelles just like eykaryotic cells do

B) Archaea cells are found everywhere on Earth, just like bacteria cells.

Select the cellular structure that can be found in both plant and animal cells. a) chloroplasts b) Mitochondria c) cell wall d) vacuole

B) Mitohondria

Identify the prokaryotic organism. a) fungus b) Bacteria c) animal d) plant

B) bacteria

which cellular structure is unique to plant cells? a) ribosome b) Chloroplasts c) mitochondria d)plasma membrane

B) chloroplasts

which cellular structure is unique to prokaryotic organisms? a) ribosome b) plasma membrane c) Plasmids d) cell wall

C) Plasmids

which of the following cells contain a plasma membrane? a) animal cells only b) animal cells and plants cells only c) animal cells, plant cells, and bacterial cells d) bacteria cells only

C) animal cells, plant cells, and bacterial cells

If you were looking at a cell under a powerful microscope, what would tell you that it is a eukaryotic cell? a) it has ribosomes b) it has DNA c) It has a nucleus. d) it is moving

C) it has a nucleus.

Which organelle functions to break down and recycle large molecules? a) ribosome b) golgi apparatus c) Lysosome d) cholorplasts

C) lysosome

which of the following is not a form of passive transport? a) diffusion b) osmosis c) facilitated diffusion d) all of the above are forms of passive transport

D) all of the above are forms of passive transport

which cellular structure is unique to animal cells? a) nucleus b) ribosome c)mitochondria d) Lysosome

D) lysosome

the passive transport of water is specifically called ___. a) simple diffusion b) facilitated diffusion c) hydrosmosis d) osmosis

D) osmosis

which of the following statements is correct regarding DNA and RNA? a) DNA remains in the nucleus at all times; RNA is produces in the nucleus but then leaves the nucleus b) RNA remains in the nucleus; DNA is produced in the nucleus but then leaves the nucleus c)DNA and RNA leave the nuclues after being produced d) DNA and RNA both stay in the nucleus after being produced.

a) DNA remains in the nucleus at all times; RNA is produces in the nucleus but then leaves the nucleus

What harvests energy from sunlight to rearrange molecules into sugar? a) chloroplasts b) mitochondria c) nucleus d) lysosome

a) chloroplasts

which would most likely pass unaided through a plasma membrane? a) something small and nonpolar, such as nitrogen gas b) something small and polar, such as water molecule c) something small and charged, such as an ion d) something large, such as a glucoses molecule

a) something small and nonpolar, such as nitrogen gas

what is the main function of the nucleus? a) to hold all of the DNA b) to hold all of the RNA c) to produce proteins d) to produce energy

a) to hold all of the DNA

which of the following is an accurate description of the plasma membrane? a) two layers of phospholipids with a number of proteins embedded within b) one layer of phospholipids with a number of proteins ebedded within c) two layers of proteins with a few phospholipids embedded within d) one layer of proteins with a few phospholipids embedded within

a) two layers of phospholipids with a number of proteins embedded within

which of the following statements is typically false? a) DNA is double stranded, whereas RNA is single stranded b) DNA contains the same nucleotiedes as RNA c) DNA to RNA is called transcription d) RNA to DNA is called translation

b) DNA contains the same nucleotiedes as RNA

wat is a phospholipid? a) a special kind of lipid wit a water fearing head and 2 water loving tails b) a special kind of lipid with a water loving head and 2 water fearing tails c) a special kind of lipid with 2 water loving heads and 1 water fearing tail d) a special kind of lipid with 2 water fearing heads and 1 water loving tail

b) a special kind of lipid with a water loving head and 2 water fearing tails

What harvests energy from food molecules to make ATP? HINT: energy/powerhouse of cell a) chloroplasts b) mitochondria c) nucleus d) lysosome

b) mitochondria

The long extension of a cell that can propel a cell forward by whipping back and forth (such as human sperm) is called a ________. a)vesicle b)flagellum c)pilus d)cilium

b)flagellum

what is atp? a) a protein b) a carb c) an energy molecule d) an info storage molecule

c) an energy molecule

How is DNA linked to the production of proteins? a)proteins hold the instructions on how to make DNA b) DNA is the end point of protein production that allows cells to finish making proteins c) DNA holds the instructions for the cells on how to make proteins d) DNA is not linked to the production of proteins

c) DNA holds the instructions for the cells on how to make proteins

which statement best describes active transport? a) a substance goes from one area of low concentration to an area of high concentration, and this releases energy b) a substance goes from an area of high conc to and area of low conc and this requires energy c) a substance goes from an area of low concentration to an area of high conc and this requires energy d) a substance goes from an area of high conc to an area of low conc and this releases energy

c) a substance goes from an area of low concentration to an area of high conc and this requires energy

what is the definition of endocytosis? a) the entire plasma mebrane turns itself inside out b) it is the digestion of larger molecules that were brought into the cell c) it is the transport of large molecules into the cell d) transport of large molecules out of the cell

c) it is the transport of large molecules into the cell

what is the role of the ribosome in protein production a) it reads the DNA to make an RNA molecule b) it folds the protein into the correct shape c) it is where proteins are made d) it has not direct role in protein production

c) it is where proteins are made

The cytoskeleton has several primary functions. The first and most obvious is it acts as an interior skeleton that supports the rest of the cell. What is another function of the cytoskeleton? a) it provides a communication network whereby chemo-electrical signals can be sent from one area of the cell to another b) it creates a durable outer covering to increase the strength and rigidity of the cell c) it provides a series of tracks along which vesicles can move thru out the cell d) it connects one cell to another

c) it provides a series of tracks along which vesicles can move thru out the cell

what is the main role of membrane proteins? a) hold the phospholipid bilayer together b) block materials from entering the cell c) regulates the passage of materials in and out of the cell d) there are no membrane proteins

c) regulate the passage of materials in and out of the cell

chlorplasts and mitochondira share something with the nucleus the the other organelles do not. What is this shared characteristic? a) they are the only organelles wrapped in a lipid-based membrane b) they are only organelles that produce ATP c) they are only organelles that contain DNA d) they are only organelles not found in bacteria

c) they are only organelles that contain DNA

subtances are often packaged into small ___ for transport, either through the membrane or throughout the interior of the cell. a) vacuoules b) corpuscles c) vesicles d) organelles

c) vesicles

what might happen to your red blood cells if you were suddenly unable to regulate the solute conc of your blood and it began to rise? a) your blood cells would stay the same b) your blood cells would enlarge and could ruptrure because water would move into the cells via osmosis c) your blood cells would shrivel because water would move out of the cells via osmosis d) we dont have enough info to answer

c) your blood cells would shrivel because water would move out of the cells via osmosis

When would the chromatin be the most tightly coiled? a) during protein synthesis b) during cellular respiration c) during photosynthesis d) during cell division

d) during cell division

which of the following is not located in the nucleus? a) chromosomes b) nucleolus c) DNA d) endoplasmic reticulum

d) endoplasmic reticulum

Final protein refinements, storage, and packaging occurs ________. a) in cytoplasm b) in rough endoplasmic reticulum c) in smooth er d) in golgi apparatus

d) in golgi apparatus

where are the ribosomes located? a) cytoplasm only b) rough endoplasmic reticulum only c) smooth endoplasmic reticulum and the cytoplasm d) on the rough endoplasmic reticulum and the cytoplasm

d) on the rough endoplasmic reticulum and the cytoplasm