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
-BARSIC- [3]
3 years ago
9

Which product is missing from the stage of glycolysis?

Biology
1 answer:
Alchen [17]3 years ago
8 0

The answer is A

2 ATP.

You might be interested in
A DNA fragment is introduced into the lacZ gene of a plasmid, which also contains an ampicillin resistance gene. What is the app
zhenek [66]

Answer: The bacteria transformed with this particular plasmid will form white colonies on the plates containing ampicillin and Xgal.

Explanation: The lacZ gene produces an enzyme called β-galactosidase which is responsible for the breakdown of lactose into glucose and galactose. The lacZ gene is one of the three genes (the other two being lacA and lacY) of the lac operon which is responsible for the transport and mechanism of lactose in E. coli and many other bacteria.

In recombinant DNA technology, when a plasmid is to be used to transform a host cell, such markers are used to help screen the transformed cells from the ones that have not taken up the plasmid. Xgal present in the plates is an artificial substrate which is hydrolyzed by

β-galactosidase into 5-bromo-4-chloro-indoxyl which will dimerize and oxidise into 5,5'-dibromo-4,4'dichloro-indigo. This is a blue pigment which will give blue color to the bacterial cells. Introducing a DNA fragment in this lacZ gene will make it non-functional so it will not be able to produce the enzyme.

Therefore, when a bacterial cell is transformed with a plasmid containing ampicillin resistance gene and a DNA fragment introduced in the lacZ gene and then grown on plates containing ampicillin and Xgal, white colored colonies will appear. The white colonies will show the bacterial cells that have successfully taken up the plasmid with the DNA fragment incorporated in the lacZ gene as this will render the gene non-functional and will not produce β-galactosidase which will breakdown Xgal to give blue colonies. Since the plates contain ampicillin, only the bacterial cells that have been successfully transformed with the plasmid ( the ones that have the DNA fragment and the ones without it) will grow as the ampicillin resistance will give them resistance against ampicillin in the plates. The bacterial cells that have not taken up the plasmid will not be resistant to ampicillin and will not form colonies on the plate.

This is called blue-white screening which is used to identify successfully transformed host cells. A picture of this is given in the attachment, taken from the following website:

https://www.mun.ca/biology/scarr/Blue_&_White_Colonies.html

8 0
3 years ago
You are working with strains of Zymomonas mobilis to select the best strain for bioethanol production. You are trying to find th
Vlad [161]

Answer: e

Explanation: the higher the growth rate constant, the shorter the time to grow.

3 0
2 years ago
What is true for urochordates
Leno4ka [110]
Answer is B on pluto
5 0
3 years ago
Please also describe how actin-binding sites are made available for cross-bridging with myosin heads during contraction.
yaroslaw [1]

Answer: The calcium ion binds to troponin, and this slides the tropomyosin rods away from the binding sites.

Explanation:

Contraction and relaxation of muscle cells brings about movements of the body. The contractile myofilament called sarcomeres are bounded at each end by a dense stripe called the Z - line, to which the myosin fibres are attached, and lying in the middle of the sarcomere are the actin filaments, overlapping with the myosin.

When action potential spreads from the nerve along the sarcolemma (muscle cell membrane), it penetrates deep into the muscle cell through the sarcoplasm (cytoplasm of muscle cell), and releases CALCIUM from the intracellular stores.CALCIUM triggers the binding of myosin to the actin filament next to it forming CROSS BRIDGES.

For this to occur, ACTIN BINDING SITE has to be made available. TROPOMYOSIN is a protein that winds around the chains of the actin filament and covers the myosin-binding sites to prevent actin from binding to myosin. The first step in the process of contraction is for calcium ions to bind to troponin so that tropomyosin can slide away from the binding sites on the actin strands.

3 0
2 years ago
The fact that water is a _________ molecule is important, because this allows it to dissolve many substances.
Luden [163]
D. Polar molecule is the answer.
5 0
2 years ago
Read 2 more answers
Other questions:
  • Kristoff was recently diagnosed with depression after reporting symptoms such as a loss of interest in activities, poor concentr
    8·1 answer
  • Which of the following describes tight junctions?
    8·2 answers
  • Which sentence best describes active transport?
    8·2 answers
  • How does the urinary system control the water in the body
    14·2 answers
  • 100.0 grams of an isotope with a half life of 36.0 hours is present at time zero.
    5·1 answer
  • Susan has just moved into a new house. For some reason, she cannot get the grass to grow in her yard. She decides to grow small
    6·1 answer
  • Which statement explains blood pressure?​
    13·1 answer
  • HELP ASAP I WILL GIVE BRAINLIST!! Which of the following best defines the molar mass of a substance? (5 points)
    11·1 answer
  • Sand is used to make glass. what do you think must be done to the sand to make it transform into glass?
    7·2 answers
  • What if the surface of. A bacteria cell was not very antigenic. What would this mean for the host
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!