CELLS TEST

The "steady state" or constant condition maintained by the body is called _____ and is necessary for life. homeostasis meiosis active diffusion osmosis

homeostasis

Characteristics of the cell wall include which of the following? Select all that apply. increased strength to the cell selective membrane cellulose phospholipids and protein

increased strength to the cell cellulose

A cell is placed in a water solution with the same salt concentration as the cell. The cell is placed in a _____. hypertonic solution hypotonic solution isotonic solution

isotonic solution

When an animal cell is placed in a hypotonic solution, _____. it will gain water and may burst it will lose water and shrink the cell's reaction cannot be determined it will remain the same size

it will gain water and may burst

contain digestive enzymes

lysosomes

production of needed energy

mitochondria

When the body reacts to stop, or work in the opposite direction of, a stimulus, it is known as _____. positive feedback negative feedback

negative feedback

Characteristics of animal cells include which of the following? Select all that apply. no cell wall, only plasma membrane large hypertonic vacuole no chlorophyll or chloroplasts cleavage furrow cell plate in cell division

no cell wall, only plasma membrane no chlorophyll or chloroplasts cleavage furrow

Schleiden and Schwann believed that _____. organisms are the basic unit of life both cells and organisms are basic units of life the questions of the basic unit of life are too abstract to answer none of the above

none of the above

What general type of microscope uses bright illumination and multiple glass lenses? electron dark optical compound

optical

The third level of cell organization is the _____. system level organism level organ level tissue level

organ level

Water can move freely through the membrane from a higher to a lower concentration in a transportation process called _____. osmosis meiosis permeability mitosis

osmosis

When the cell engulfs large fragments of matter, it is called _____. Select all that apply. pinocytosis exocytosis phagocytosis endocytosis

phagocytosis endocytosis

The plasma membrane is a _____ bilayer. protein carbohydrate lipid phospholipid

phospholipid

Characteristics of the plasma membrane include which of the following? Select all that apply. phospholipids and protein increased strength to the cell cellulose selective membrane

phospholipids and protein selective membrane

store foods or pigments

plastids

These cells are part of the domains Archaea and Bacteria. prokaryotes eukaryotes

prokaryotes

production of protein

ribosomes

The plasma membrane is _____. semipermeable around the nucleus permeable rigid

semipermeable

Blood, muscle, and bone cells are examples of _____. plant cells specialized cells organs tissues

specialized cells

One difference between human cheek cells and onion cells is _____. the presence of cytoplasm the absence of a nucleus in the onion cells the absence of a cell wall in cheek cells none of the above

the absence of a cell wall in cheek cells

The cell theory teaches that _____. the basic unit of life is the cell cells are miniature reflections of the organisms from which they are taken all cells have the same basic structure the basic unit of life is the organism

the basic unit of life is the cell

An electron microscope is usually used for microorganisms that are _____. too small to be seen with an optical microscope not possible to observe with any instrument too small to be seen with the unaided eye

too small to be seen with an optical microscope

_____ are larger cells with membrane-bounded organelles. Eukaryotes Prokaryotes

Eukaryotes

flat sacs that package and ship vesicles outside the cell

Golgi apparatus

If a cell was observed under the microscope and found to have a rigid cell wall and be green in color that cell is most likely a Plant cell Animal cell Algae cell Bacterium cell

Plant cell

Who was the first scientist to discover cells with the use of a homemade microscope? Rudolf Virchow Theodor Schwann Carolus Linnaeus Robert Hook

Robert Hook

All cells have _____. (Select all that apply.) a nucleus an outer membrane or plasma membrane large vacuoles cytoplasm a cell wall chloroplasts protoplasm

a nucleus an outer membrane or plasma membrane cytoplasm protoplasm

When the cell excretes sodium from within, against the natural tendency of matter, it is performing _____. pinocytosis passive diffusion facilitated diffusion active transport

active transport

To maintain homeostasis, you _____. sweat when you're hot breathe harder during exercise drink water when you're thirsty all of the above

all of the above

Which of the following are parts of a feedback loop? sensory receptors an integrating center effectors all of the above

all of the above

Characteristics of plant cells include which of the following? Select all that apply. cell plate in cell division cleavage furrow large hypertonic vacuole no chlorophyll or chloroplasts no cell wall, only plasma membrane

cell plate in cell division large hypertonic vacuole

This green pigment found in plants traps energy from the Sun for photosynthesis. chloroplast chlorophyll peroxisome plastid

chlorophyll

A light microscope that makes the specimen appear light on a dark background is called a(n) _____. compound microscope dark-field microscope electron microscope

dark-field microscope

An air freshener can change the scent of a room by _____. active transport exocytosis facilitated diffusion diffusion

diffusion

tubes serving as transportation channels

endoplasmic reticulum

Glucose and amino acids move in or out of a cell by _____. active transport endocytosis and exocytosis facilitated diffusion passive diffusion

facilitated diffusion