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Amiraneli [1.4K]
3 years ago
11

2. Describe how the lac operon functions, and explain how it permits E.

Biology
1 answer:
MAXImum [283]3 years ago
7 0

Answer:

The lac operon is an operon, or group of genes with a single promoter (transcribed as a single mRNA). The genes in the operon encode proteins that allow the bacteria to use lactose as an energy source. coli normally metabolise glucose, but if glucose is not available in a new environment, the lac operon can allow E. coli to metabolise lactose, the sugar found in milk using the structural genes beta-galactosidase and lactose permease. The lac operon of E. coli contains genes involved in lactose metabolism. ... It normally blocks transcription of the operon, but stops acting as a repressor when lactose is present. The lac repressor senses lactose indirectly, through its isomer allolactose.

Explanation:

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Given a very unusual cell with an intracellular fluid containing 1 mM calcium phosphate and an extracellular fluid containing 10
vladimir1956 [14]

Answer:

M.P = 140.46 Vm

Explanation:

Membrane potential can calculated using the following equation:

<em>(61/z) ln ([X]out/[X]in)</em>

where z is the charge of Ca2+ ion and X represent the concentrations By applying necessary calculations…

Membrane potential = (61 / 2) ln (100 x 10^-3 / 1 x 10^-3)

                                  = 30.5 x 4.60 = 140.46 Vm

8 0
4 years ago
Kelly, who is blind, switches on the fan in her room without anyone's help. she is able to do this because the ________ relays t
Allisa [31]

Kelly, who is blind, switches on the fan in her room without anyone's help. she is able to do this because the Somatic nervous system relays the relevant information to her brain.

<h3>Nervous system :</h3>

According to the classical doctrine of the nervous system, an animal's nervous system is a highly sophisticated component that coordinates its movements and sensory data by sending and receiving signals to and from various regions of its body.

<h3>Somatic nervous system :</h3>

The somatic nervous system, also known as the voluntary nervous system, is the area of the peripheral nervous system responsible for the voluntary control of skeletal muscle movement.

A part of the peripheral nervous system called the somatic nervous system is responsible for the voluntary control of skeletal muscle movement.

<h3>Example somatic nervous system</h3>

The cranial nerves, which transmit information from the brain to the head and neck region, are an illustration of the somatic nervous system. In this area, conscious motor functions are under the control of the somatic nervous system.

To know more about cranial nerves visit :

brainly.com/question/14084468

#SPJ4

7 0
2 years ago
If chromosomes fail to separate during cell division ________________ can occur. This can result in cells with the incorrect num
storchak [24]

Answer:

1. NONDISJUNCTION

2.Aneuploidy

3.Trisomy

4.Monosomy.

5.3.

6.Trisomy 21.

Explanation:

8 0
3 years ago
Going would you expect to be able to see using a light microscope
vagabundo [1.1K]

no, the scope on it blocks out natural light


4 0
3 years ago
For virtual xxx<br>z OOm<br>872"700"3342<br>(143)​
dexar [7]

Explanation:

please don't post such irrelevant questions

8 0
3 years ago
Read 2 more answers
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