Download Concepts Review: Functions of Cellular Activity

Concepts
Review:
Functions of
Cellular
Activity
Question 1
I.) What is a cell, and what does it do?
Answer:
The cell is the basic unit of structure and function in living
things. The cell enables a living thing to stay alive and
reproduce.
Question 2
II.) What type of actions do cells perform?
Answer:
Cells perform actions like getting oxygen, getting rid of
wastes, get food and growing.
Question 3
III.) What are the life functions that cells perform?
Answer:
The life functions performed by cells include movement,
nutrition, excretion, synthesis, respiration, regulation (or
sensitivity), growth, and reproduction. Cells must perform
all of the same functions as organisms in order to stay alive
Question 4
IV.) Why does a cell need water to survive?
Answer:
Water is one of the most important non-living resources
that all organisms need for their environment. It helps
provide the structural support that cells need to interact
with each other. Water is extremely important to a cell in
that it carries nutrients to cells. Cells than can convert
nutrients into energy. Cells use this energy to perform
specialized specific functions. For example, muscle cells
need energy to move limbs, and nerve cells in the eye need
energy to send visual cues to the brain.
Question 5
• V.) What would occur if cells were not able to grow and
reproduce?
Answer:
DEATH!!!
Question 6
VI.) What is Homeostasis? How does the body
maintain homeostasis?
Answer:
Homeostasis is the tendency of a cell to maintain the conditions
necessary for survival.
For example, homeostasis helps a cell maintain a stable temperature
and the proper amount of water.
Cellular respiration is the process that transforms chemical energy
into other types of energy needed for life. In animal cells, respiration
occurs when the cells break down carbohydrates. For example, in
muscle cells, the chemical energy stored in carbohydrates is changed
into mechanical energy used for movement. It is also changed into
heat energy, which is given off as waste.
Plant cells also perform cellular respiration, as they convert glucose
(sugar) into energy. Unlike animal cells that obtain carbohydrates
from outside sources, plant cells make their own carbohydrates. This
process is called photosynthesis. During photosynthesis, light energy
is transformed into the chemical energy stored in carbohydrates
Question 7
VII.) How is a cell able to move particles from areas of
higher concentrations, to areas of lower concentrations?
Answer:
By the Process of Diffusion
Question 8
VIII.) What type of transport do you think is most reliable
(active or passive transport)? Explain your reasoning?
Answer:
Passive transport is when there is no cellular energy used to
move materials into/out of the cell (diffusion or
osmosis). Active transport is required when a cell needs to
use its own energy to move materials through the cell
membrane.
Videos:
I.) Life Processes & Cells – Key Stage 3 Biology
(youtube app)
II.) In Da Club – Membranes and Transport: Crash
Course (Youtube app)
III.) Eukaryopolis – The City of Animal Cells: Crash
Course (Youtube app)
IV.) Plant Cells: Crash Course (Youtube app)
Reading Passages:
I.) My Cells, My Neighborhood (discovery
education)
II.) Water (discovery education)
III.) Cell Labeling and Answering Questions
Activity: website –
http://jmlloydscience.weebly.com