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Week 18 CCA Study Guide
Remember this worksheet is meant only to be a guide to help you prepare for the up coming test. You
should also access the online textbook, study your journal, and cell diagrams.
TROPISM
Hydrotropism
Geotropism / Gravitropism
Phototropism
Thigmotropism
ORGANELLE
Many Small Vacuoles
One Large Vacuole
Cell Wall
Cell Membrane
Chromosomes / DNA
Nucleus
Ribosomes
Mitochondria
Chloroplast / Chlorophyll
Endoplasmic Reticulum
STIMULI
Moisture
Gravity
Dim/Bright Light
Fence post, tree, side of a house
PLANT CELL
X
X
X
X
X
X
X
X
X
RESPONSE
Roots grow toward water
Roots grow down, stems up
Plants bend toward light
Plant “climbs” up object
ANIMAL CELL
X
X
X
X
X
X
X
1.
Why do we refer to the nucleus as the “brain” of the cell? The nucleus contols all the
activities of the cell like the brain controls the activities of the body
2.
Which organelle is called the cell’s powerhouse AND why? The mitochonria is called the
powerhouse because it “digests” glucose to release energy for the cell to use.
3.
What are the 3 main parts of The Cell Theory?
1) all living things are made of cells
2) all cells come form pre-existing cells, and 3) the cell is the basic complete unit of living things.
4.
Describe the process of photosynthesis – include the organelle where it takes place, the
reactants (what it needs), the products (what it produces), and the energy transformation that takes
place. During photosynthesis plants use water, carbon dioxide, and sunlight to produce glucose and
oxygen. The process takes place in the chloroplasts of green plant cells and
transforms radiant
energy (sunlight) into chemical energy (glucose)
5.
What could a person observe at the cell level and organism level that would indicate that
a plant was suffering from dehydration?
At the cell level using a microscope a person may
observe the cell membrane pulling away from the cell wall and the vacuole shrinking. At the
organism level a person would observe wilting – drooping branches and leaves.
6.
What is Turgor Pressure and why is it important? Turgor Pressure is the pressure exerted by
water pushing on the sides of the cell vacuole. Plants do not have skeletons so Turgor Pressure helps
keep the plant up right. Having a full vacuole also insures a water supply for photosynthesis and other
chemical reaction taking place in the cell.
7.
List the levels of organization in the body from smallest to largest.
Cells >>>> Tissues >>>> Organs >>>> Organ Systems >>>> Organism
Complete the Chart Below
STRUCTURE
Nucleus
Vacuole
Lysosome
Cell Wall
Mitochondria
Ribosomes
Endoplasmic Reticulum
Chloroplast
Cytoplasm
Cell Membrane
FUNCTION
Control the activities of the cell
Store water, food, some waste
Breakdown molecules, waste
Rigid, give support and shape
Produces energy for the cell
Synthesizes proteins
Assembles molecules and
transport them across the cell
Transform radiant energy into
chemical energy (glucose)
Jellylike substance keeps cell
organelles in place
Surrounds the cells controls
what enters and leaves the cell
BODY SYS or Organ
Brain, Nervous System
Urinary bladder, large intestine
Liver, digestive system
Skeletal System
Digestive system, adrenaline
Muscles
Circulatory System (blood
vessels)
Digestive system,
Skin/Integumentary System
(production of vitamin D)
Connective tissue (tendons,
ligaments, mesentery)
Alveoli, Digestive System
Skin, Integumentary System
8.
How might your body respond if you had an infection such as strep throat?
Your throat may become red, inflamed, and sore. White blood cell count may
increase, you may develop a fever
9.
When your body is preparing to “fight or flight” what changes might you
experience? Adrenaline is released by the adrenal glands. Increased heart rate,
respiration rate, and blood pressure. Your senses become more acute (very alert)
and your muscles taunt.
10.
Indicate if the following are examples of Internal (I) or External (E) stimuli.
feeling hungry
I
feeling heat from a flame E
stepping on a rock E
low blood sugar levels
I
low blood oxygen levels I
fire alarm
E
you salivate when you smell cookies cooking E
tickle in your throat I
lack of food E
lack of water E
11.
Indicate if the following are examples of stimuli (S) or a response (R).
sweating
R
increased blood pressure R
increase insulin levels
R
plant wilting R
12.
shivering
R
feeling thirsty
goose bumps
gravity
S
S
R
What force do your veins have to overcome to push your blood back to your
heart? Veins have to exert a force strong enough to overcome the force of gravity