Task 3.
Cell
Cell is a structural unit of any organism. At the same time it is an entire living
system (Figure 3).
151
Question 1.
What structure of the cell is shown in Figure 3?
Figure 4
A. endoplasmic reticulum
B. plasma membrane
C. Golgi complex
D. vacuole
Answer:
______________.
Question 2.
What is the branch of biology that studies living cells and their
organelles, their structure, function, cell division processes, aging and death.
A. cytology
B. photobiology
C. physiology
D. immunology
Answer:
______________.
Figure 3
152
Task 4.
Skin
In Biology outer covering of vertebrates is
called a skin. The skin protects the body from a
wide range of external factors, is involved in
respiration, thermoregulation, metabolism and
many other processes. Moreover, the skin
presents a massive receptive field of various
kinds of surface sensitivity.
Figure 5
Question 1.
The skin is the largest organ on the square. What is the percentage
of the weight of the skin relative to body weight?
A. 12-15%
B. 10-25%
C. 8-11%
D. 25-30%
Answer: ______________.
Question 2.
Skin thickness is different in
different parts of the body. What part of the
body is covered by the thinnest skin?
A.Ladon
B.Stopa
C. Eyelids
D. Stomach
Answer:
______________.
Figure 6
Question 3.
The skin is composed of layers
of different embryonic origin.
What is the outer layer of skin?
A. Follicles
B. Hypodermis
C. Dermis
D. Epidermis
Answer:
______________.
Figure 7
Question 4:
The skin the organ that is
updated more frequently than any other.
Hourly your skin loses about 600,000 horny
scales. Their weight is
700 - 800 grams. And
by the age of 70 about 60 kg of skin is lost. How long does it take to change all the
cells?
153
Figure 8
A. 22-25 days
B. 30-40 days
C. 52-77 days
D. 100-120 days
Answer:
______________.
Достарыңызбен бөлісу: |