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Softa [21]
2 years ago
10

Which family on the periodic table is least likely to enter into chemical reactions?

Biology
1 answer:
WITCHER [35]2 years ago
8 0

Answer:

O 18

Explanation:

Group/family 18 is the group of noble/inert gases. They are least likely to enter into chemical reactions, as their valence shell is filled, so stability is maximum.

BRAINLIEST?

OF COURSE IT IS.

:)

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2. Which of the following may affect a passenger's safety during a collision? Select all
devlian [24]

Answer: All of them seem to apply.

Explanation:

A., Its important to know if your car that is being collided is a small car or big truck, as they will end up effecting who gets hurt the most.

B., Same thing as A. but with the other vehicle.

C., The velocity matters a lot with a collision, since a slow crash won't have as much damage as a car going fast and hitting someone. Also it won't be as likely to be fatal if the car crashing into you is going slow.

D., This is the only one I'm not too sure on, but it seems like how fast the car can accelerate once collided with would be a big factor on whether it would come to a halt or skid across the road.

7 0
3 years ago
A plasmid used in recombinant DNA cloning must contain
oksian1 [2.3K]

Answer:

D. Multiple antibiotic resistance genes.

Explanation:

A plasmid with multiple antibiotic resistance genes is important during cloning as it helps in selectivity of the specific clones during transformation of bacteria.  

7 0
4 years ago
Which of the following mutations could lead to constitutive expression of the genes of the lac operon? View Available Hint(s) Wh
Molodets [167]

Options for part A are as follows:

A) A mutation in the operator sequence

B) A mutation in the lac-Z gene

C) A mutation in the lac-Y gene

D) A super repressor mutation

Answer:

The correct answer:

Part a - A mutation in the operator sequence

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

Part C. true.

Explanation:

part a:

If there is a mutation in the operator sequence leads to prevent binding of the repressor which leads to allowing constitutive expression of the genes various conditions.

part b:

The biological role of the lac operon makes sure that the cell dedicates resources to the production of enzymes involved in lactose metabolism only when lactose is available in the environment

Part c:

RNA polymerase cannot transcribe the structural genes due to the repressor binds to the lac operator, therefore, the proper function of the lac operon is possible when the placement of the operator sequence between the promotor and the structural genes.

4 0
3 years ago
Which picture represents a cast?
Snowcat [4.5K]

Answer:

its number 1

Explanation:

because the fly is stuck in amber

and the snail shell is in mold and is filled up

and number 2 is not cast

5 0
3 years ago
Why can aquatic animals not survive on land
Paul [167]

Answer:

This is the answer to ur question

5 0
3 years ago
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