CELL BIOLOGY, SYSTEMS AND HOMEOSTASIS UNIT TEST QUESTIONS AND ANSWERS

CELL BIOLOGY, SYSTEMS AND
HOMEOSTASIS UNIT TEST
QUESTIONS AND ANSWERS
how to center a specimen - ANSWER-move slide to middle in low power mode to
locate it better then switch to high power to see the greater magnification

Homeostasis - ANSWER-the process by which organisms maintain a relatively
stable internal environment

nervous system function - ANSWER-recognizes & coordinates he body's response
to changes in its internal and external environments

integumentary system function - ANSWER-Serves as a barrier against infection and
injury; helps to regulate body temperature; provides protection against ultraviolet
radiation from the sun

respiratory system function - ANSWER-Provides oxygen needed for cellular
respiration and removes excess carbon dioxide from the body

digestive system function - ANSWER-Convert food into simpler molecules that can
be used by the cells of the body; absorbed food; eliminates wastes

Excretory system function - ANSWER-Eliminates waste products from the body in
ways that maintain homeostasis

skeletal system functions - ANSWER-supports the body, protects internal organs,
allows movement, stores mineral reserves, provides a site for blood cell formation

Muscular system function - ANSWER-works with skeletal system to produce
voluntary movement; helps to circulate blood and move food through the digestive
system

circulatory system function - ANSWER-Brings oxygen, nutrients, and hormones to
cells; fights infection; removes cell wastes; helps to regulate body temperature

endocrine system function - ANSWER-controls growth, development, and
metabolism; maintains homeostasis (produces hormones)
GLANDS WICH RELEASE CHEMICALS DIRECTLY INTO THE BLOOD STREAM

Reproductive system function - ANSWER-Produces reproductive cells (gametes); in
females, nurtures and protects developing embryo

nuclear membrane - ANSWER-semipermeable- controls what goes in and out of the
nucleus

nucleus - ANSWER-Control center of the cell- regulates cell activities - contains DNA

, nucleolus - ANSWER-site of ribosome assembly

ribosome - ANSWER-site of protein synthesis

Endoplasmic Reticulum (ER) - ANSWER-where lipid components of the cell
membrane are built
rough- w/ ribosomes- site of completion of protein synthesis for proteins that will be
exported from the cell (covered w/ protein producing ribosomes)
smooth- w/o ribosomes

cell membrane - ANSWER-semipermeable- A cell structure that controls which
substances can enter or leave the cell.

Cytoplasm - ANSWER-watery fluid in the cell that is the site of many chemical
reactions- full on enzymes

Golgi apparatus - ANSWER-packages molecules for transport out of the cell

lysosomes - ANSWER-intracellular digestion of food- suicide sac for cell destruction

Mitochondria - ANSWER-Site of aerobic respiration (releases energy stored in the
molecules of food to produce ATP)

food vacuole - ANSWER-stores food- will merge w lysosomes to break down food
molecules

centriole - ANSWER-produces spindle fibers during cell division that help
chromosomes separate

cell wall - ANSWER-provides shape and structural support to plant cells- made of
cellulose

central vacuole - ANSWER-water mineral and waste storage - water pressure makes
it possible for plants to support heavy structures like leaves and flowers

chloroplasts - ANSWER-Site of photosynthesis - light energy is captured and
converted into chemical energy (carbohydrates)

what does a microscope do to an image - ANSWER-flips, upside down, & magnified

relationship between magnification and field of view - ANSWER-the greater the
magnification is the smaller the field of view (it decreases)

relationship between magnification and speed an organism will appear to be moving
- ANSWER-the greater the magnification the faster the organism will appear to be
moving.

if slide is pushed down to the right how will it appear in the microscope - ANSWER-
up to the left (always backwards)