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
mina [271]
3 years ago
7

Which of the following best describes the biological role of the lac operon? View Available Hint(s) Which of the following best

describes the biological role of the lac operon? It ensures that bacterial cells produce lactose only when no other food sources are available. It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment. It ensures that a cell produces enzymes involved in lactose metabolism in a constitutive manner. It prevents other sugars from being metabolized until all available lactose has been used.
Biology
1 answer:
Verdich [7]3 years ago
6 0

Answer:

It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Explanation:

Lac operon is also referred to as Lactose operon.This operon helps in the transport and metabolism of lactose of many enteric bacteria.

It ensures that a cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Due to the fact that it would be a total waste to produce enzymes when no lactose is available or if another preferable energy source such as glucose were available. The lac operon uses a two-part control mechanism to ensure that the cell uses energy producing the enzymes encoded by the lac operon only when necessary to avoid wastage and abnormalities.

You might be interested in
If water were a non polar molecule, how would its properties be different ?
igor_vitrenko [27]
The answer would be C.

Nonpolar molecules cannot form hydrogen bonds that polar molecules can. Interactions between nonpolar molecules are very weak thus D is wrong. And water can climb up inside plants and has adhesion and cohesion because of it’s strong hydrogen bonds.
5 0
3 years ago
What happens to sister chromatids in meosis 2?
weeeeeb [17]
<span>Meiosis II is very similar to Mitosis. In both cases chromosomes line up and sister chromatids are separated by the action of the spindle fibers. The daughter cells are genetically identical to one another.</span>
5 0
3 years ago
Read 2 more answers
It's a gizmo for rainfall and bird beaks​
Flauer [41]

Answer:

9.9mm

Explanation:

7 0
3 years ago
Stion
vovangra [49]

Answer:

O The neuron has more potassium ions inside than outside.

Explanation:

The membrane resting potential is defined as the difference in electrical charge between the interior of neurons and their outer environment. In neurons, both sodium (Na+) and potassium (K+) pumps contribute to generating the resting potential. Neurons have a higher concentration of K+ inside than outside and a higher concentration of Na+ outside than inside. When a neuron is at its rest state, where the inside is negative with respect to the outside, its membrane is more permeable to K+ than Na+, and therefore the resting membrane potential is closer to the equilibrium potential of K+.

8 0
3 years ago
01:46:45
Ber [7]

Answer:

The correct description of a feature of the rock cycle is:

O Rocks change from one type to another.

Explanation:

Sedimentary, metamorphic, and igneous rocks are the three main rock types.  Together, they form the universal rock cycle.  A sedimentary rock, for example, can change from its known state to another state by passing through crystallization, metamorphism, erosion, and sedimentation.  There are no specific orders for the change.  The processes that they pass through determine the resulting type.

8 0
3 years ago
Other questions:
  • Which of the following hormones is released by the anterior pituitary as a part of that positive feedback loop between it and th
    12·1 answer
  • The separate lineages leading to dolphins and sharks both evolved streamlined bodies, dorsal fins, and broad tail fins as adapta
    14·1 answer
  • 78% of Earth's atmosphere is nitrogen gas. All living things need nitrogen as a part of DNA and RNA. Yet you and I, and other li
    15·2 answers
  • Unemployment resulting from hurricane katrina ______ the risk of cardiovascular illness.
    6·1 answer
  • Genes can be best described as
    6·2 answers
  • What sex chromosome determines the gender
    9·2 answers
  • What are genes
    8·1 answer
  • What will happen if a new genotypic character is introduced in a population?
    13·1 answer
  • What are some personal thoughts on air pollution.
    12·1 answer
  • Can someone help please
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!