1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ICE Princess25 [194]
3 years ago
11

Câu 1. Tổ chức sống nào sau đây có cấp thấp nhất so với các tổ chức còn lại ?

Biology
1 answer:
masha68 [24]3 years ago
5 0

Answer:

...........Atom.........

❤

You might be interested in
What chromosome pair represents a human male?
podryga [215]

Human males possess an XY pairing.

8 0
3 years ago
One of your lab partners has followed the recommended procedure of running Gram-positive and Gram-negative control organisms on
andreyandreev [35.5K]

Answer:

Reduced in holding time of decolrization step and also used less Alcohol because decolrization step is important in Gram's staining.The decolorization step must be performed carefully. Otherwise over-decolorization may occur. This step is critical and must be timed correctly otherwise the CV stain will be removed from the Gram-positive cells. If the decolorizing agent is applied on the cell for too long time, the Gram-positive organisms to appear Gram-negative..

Explanation:

Gram' staining is a technique used in microbiology labs to differentiate between Gram's positive and negative

<u>Gram-positive bacteria :</u>Stain dark purple due to retaining the primary dye called CV in the cell wall.

<u>:Gram-negative bacteria </u>Stain red or pink due to retaining the counter staining dye called Safranin or neutral red.

There are four basic step in Gram" staining

1) Application of the Primary Stain to a Heat-Fixed Smear of Bacterial Culture

2)Addition of Gram's Iodine

3)<u>Decolorization with 95% Ethyl Alcohol:</u>Alcohol or acetone dissolves the lipid outer membrane of Gram-negative bacteria, thus leaving the peptidoglycan layer exposed and increases the porosity of the cell wall. The CV-I complex is then washed away from the thin peptidoglycan layer, leaving Gram-negative bacteria colorless.

On the other hand, alcohol has a dehydrating effect on the cell walls of Gram-positive bacteria that causes the pores of the cell wall to shrink. The CV-I complex gets tightly bound into the multi-layered, highly cross-linked Gram-positive cell wall thus staining the cells purple.

The decolorization step must be performed carefully. Otherwise over-decolorization may occur. This step is critical and must be timed correctly otherwise the CV stain will be removed from the Gram-positive cells. If the decolorizing agent is applied on the cell for too long time, the Gram-positive organisms to appear Gram-negative. Under-decolorization occurs when the alcohol is not left on long enough to wash out the CV-I complex from the Gram-negative cells, resulting in Gram-negative bacteria to appear Gram-positive.

7 0
3 years ago
Give two examples that illustrate interactions that occur between the abiotic and biotic parts of this ecosystems....
romanna [79]

Answer:

A Elephant eats some grass

A lion rolls in the sand

Explanation:

Elephants and lions are biotic(living), and grass and sand are abiotic (nonliving) and those are two interactions

4 0
3 years ago
Link between the struction and function of water molecule​
Inessa [10]
W a t e r ahhhh 8228c+x Skansen 2828
7 0
2 years ago
Select ALL of the following that are directly used to control fatty acid oxidation in cells.
Serjik [45]

Answer:

The correct statements are A negative feed back regulation if free fatty acid accumulate C targeting the acetyl CoA transport shuttle in the mitochondrial membrane

Explanation:

The beta oxidation of fatty acid can be regulated by several following ways.

A The accumulation of free fatty acids exerts negative feedback during beta oxidation of fatty acids.As oxidation of fatty acids result in the breakdown of complex fatty acids in free fatty acids and acetyl CoA,the accumulation of free fatty acids lowers the rate of beta oxidation of fatty acid.

C The targeting of end  product of beta oxidation that is acetyl CoA to the mitochondrial membrane also regulates the beta oxidation pathway.Because more the transport of acetyl CoA to the mitochondrial membrane more will be the rate of fatty acid break down by beta oxidation.

6 0
3 years ago
Other questions:
  • Identify each adaptation as structural or behavioral adaptations.
    10·1 answer
  • Please Helppp!!! 100 points ASAP
    6·2 answers
  • Center of the atom which contains the protons and neutrons in cells also contains the dna and controls the cell's activities
    7·1 answer
  • The diagram shows one process during sexual reproduction. After fertilization, the zygote contains 28 chromosomes. What is the n
    8·1 answer
  • 3. What kinds of energy input could have driven chemical reactions on the early Earth?<br>​
    11·2 answers
  • What element on the periodic table has 85 protons and 86 electrons?<br> PLEASE HURRY!
    15·1 answer
  • Which type of energy change takes place as a car burns fuel to race down a track
    5·1 answer
  • After death, muscle fibers run out of ATP and calcium begins to leak from the sarcoplasmic reticulum into the sarcoplasm. This r
    7·1 answer
  • What determines the inherited traits an organism has?
    9·2 answers
  • 6. Some enzymes' names are derived from their substrate. An example of this is: A pepsin B papayin C nuclease Damylase​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!