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Biotechnology - 08
Which of the following observations is not used as evidence to support the concept of endosymbiotic origin of chloroplasts and mitochondria? A. Both have their own DNA B. Both have their own ribosomes C. Both strongly resemble prokaryotes, especially in size D. Both can live and function independently of the cell.... The fluid matrix of a cell is called the A. nucleus B. cytosol C. cytoskeleton D. endoplasmic reticulum.... In plant cells, which of the following is not a function of the large central vacuoles of plant cells? A. Storage of food B. Support C. Contractile regulation of D. Waste storage water content Which of the following can be found as a part of the mitochondrial matrix? A. Ribosomes B. DNA....
Thời gian bắt đầu: Hôm nay lúc 09:37:29(Server time)
Số câu hỏi: 10.   Tổng điểm: 10
Thời gian làm bài: 20 phút.  Thời gian còn lại: 
Cỡ chữ câu hỏi:  Cỡ chữ đáp án:
1-
In plant cells, which of the following is not a function of the large central vacuoles of plant cells?
A-
Storage of food
B-
Support
C-
Contractile regulation of
D-
Waste storage water content
2-
Which of the following can be found as a part of the mitochondrial matrix?
A-
Ribosomes
B-
DNA
C-
Enzymes
D-
All of these
3-
Which of the following observations is not used as evidence to support the concept of endosymbiotic origin of chloroplasts and mitochondria?
A-
Both have their own DNA
B-
Both have their own ribosomes
C-
Both strongly resemble prokaryotes, especially in size
D-
Both can live and function independently of the cell
4-
The fluid matrix of a cell is called the
A-
nucleus
B-
cytosol
C-
cytoskeleton
D-
endoplasmic reticulum
5-
A widely accepted explanation for transport of sugar in phloem is called
A-
root pressure theory
B-
transpiration
C-
pressure flow hypothesis
D-
cytoplasmic streaming
6-
Phloem is composed of
A-
vessel elements and companion cells
B-
tracheids and vessel elements
C-
sieve-tube elements and companion cells
D-
tracheids and sieve-tube elements
7-
The movement of most minerals, including potassium into root cells is by
A-
osmosis
B-
diffusion
C-
bulk flow
D-
active transport
8-
The evaporation of water from leaves is called
A-
transpiration
B-
cohesion
C-
tension
D-
pressure flow
9-
Normally CO2 and O2 enter a plant by
A-
osmosis
B-
active transport
C-
diffusion
D-
evaporation
10-
The cohesion-tension theory of water movement helps to explain how water moves from soil into root?
A-
Through the phloem
B-
From leaf to root
C-
Through the xylem
D-
Into the guard cells
[ Thành Lãm - ST ]

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