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Lina20 [59]
3 years ago
13

What happens to E. coli when lactose is not present?

Biology
2 answers:
victus00 [196]3 years ago
5 0
The correct answer is b
lakkis [162]3 years ago
4 0

<h3>The answer is B.</h3>

<em>The genes that produce the enzymes needed to break down lactose are not expressed.</em>

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In the film Avengers: Infinity War the main villain, Thanos, wipes out half of the life in the universe. His rational for doing
frozen [14]

Answer:

Explanation:

His conclusion is correct. We are overpopulated. Our planet cannot stand double the population it currently has. Waste for one thing is an unsolvable problem with 14 billion people on the planet. We are already in massive trouble with 7 billion.

But the moral principle involved is not correct. Laws have been set up that prevents us from killing each other off. Holocausts have solved nothing but that we are capable of mass murder. The population problem and all it's side effects have not been eradicated.

The Bible records God's attempt at doing what Thanos wanted to do. He saw immediately after the flood that was not the answer. Too many people is one thing. Murdering half is no answer that will work.

4 0
4 years ago
Read 2 more answers
What process recharges our groundwater.
Alja [10]
Groundwater is recharged naturally by rain and snow melt , hope this helps :)
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2 years ago
A woman produces an egg with 24 chromosomes, including 2 copies of chromosome 21. If the egg is fertilized by a normal sperm, th
Zielflug [23.3K]

Answer:

47

Explanation:

We all know that gametes like egg cell and sperm have haploid set of chromosomes but here as per this question she has produced 2 copies of chromosome 21. For the sake of maintaining haploidy, she was supposed to have only a single copy of chromosome 21 as a result of which her egg cell was supposed to have 23 chromosomes not 24.

But, this is a case of non dis-junction. Also, in a normal sperm there are no such copies of any chromosome i.e. there is a haploid set of chromosomes. It means that sperm must be having only 23 chromosomes. So we can easily infer that when the egg cell and sperm will fuse, the zygote will have 47 chromosomes (24 from egg cell and 23 from sperm).  

6 0
3 years ago
All wounds are considered contaminated at the time they occur. usually, the natural defenses in our bodies can deal with the inv
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<span>When a body's host defenses are overwhelmed by contaminate, we start seeing biological responses to the invading bacteria. We may notice redness, swelling, oozing, pus, foul odor or warmth at the site of the wound. The host may also have an systemic fever, delirium or other responses when overwhelmed with bacteria.</span>
6 0
4 years ago
State why iodine is described as a p block element​
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Answer:

Group 17  Melting point 113.7°C, 236.7°F, 386.9 K  

Period 5  Boiling point 184.4°C, 363.9°F, 457.6 K  

Block p  Density (g cm−3) 4.933  

Atomic number 53  Relative atomic mass 126.904  

State at 20°C Solid  Key isotopes 127I  

Electron configuration [Kr] 4d105s25p5  CAS number 7553-56-2

Explanation:

4 0
3 years ago
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