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enot [183]
2 years ago
6

Please tell me answers I am given you brainliest ​

Biology
1 answer:
qwelly [4]2 years ago
6 0

Answer:

Q2->They all form acids when combined with hydrogen. They are all fairly toxic. They readily combine with metals to form salts.

Q3->Because their outermost orbit is complete.  In Mendeleev's original periodic table there was no place reserved for noble gas.  They were discovered in end of 19th century.  So Mendeleev created zero group without disturbing original periodic table.

Explanation:

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How do you get the energy you need for life activities
Olenka [21]

Answer:

I think this would help you Sun, water, food, animals, etc.

5 0
3 years ago
Aquatic organisms in coastal areas face a variety of predators on land and in the water and air. Which ocean process exposes the
PSYCHO15rus [73]

Answer:

b

Explanation:

<em>The correct answer as to the ocean process that exposes the coastal organisms to land-based predators would be the daily tidal patterns that leave the coastal area exposed to the land for a part of the day.</em>

Some parts of the coastal areas become exposed to land during certain periods of the day as a result of tidal waves. When this happens, the aquatic organisms occupying these coastal areas become temporarily exposed to land predators who hunt and kill them for food.

<u>Therefore, the correct option is b. </u>

7 0
3 years ago
What substance is a substrate of amylase
dangina [55]

Answer:

Starch

Explanation:

Any member of a class of enzymes that catalyze the hydrolysis (splitting of a compound by addition of a water molecule) of starch into smaller carbohydrate molecules such as maltose (a molecule composed of two glucose molecules).

7 0
3 years ago
In negative control of transcription by the lac operon, how does the presence of an inducer affect transcription?.
ss7ja [257]

If the inducer [allolactose] is present in the negative control then it will bind to the repressor decreasing its ability to bind to the operator due to which the transcription begins again and the operon is turned on.

Lac Operon is a set of three genes z, y & a which are regulated under the same promoter which regulates the amount of lactose production in the cell.

An inducer is a molecule that has the ability to induce or activate the operon. ex- in the case of the lac operon, allolactose acts as an inducer.

A repressor is a molecule that will repress or restricts the transcription of the genes of the operon, as a result, the operon will be switched off.

When the lac operon is under negative control, with no CAP [catabolite repressor protein] binding activity, the repressor remains active and thus binds to the operator region of the operon, as a result, no transcription takes place and the operon will be switched off.

But if the inducer will be present even in the negative control then the transcription takes place and the operon will be on.

Learn more about lac operon here

brainly.com/question/19596166

#SPJ4

4 0
1 year ago
Question 1.. pls help
Morgarella [4.7K]

I think its C. The animal has a larger vacuole than a plant cell.

4 0
3 years ago
Read 2 more answers
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