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3 years ago

Select the correct answer.

Biology

1 answer:

emmainna [20.7K]3 years ago

7 0

Answer:

B. kinetic energy

Explanation:

Kinetic energy is the energy of movement. Thermal energy is the energy of heat. The hotter a compound gets the more space the molecules have, this allows for increased movement.

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Which best describes oxidation-reduction reactions?

larisa86 [58]

option-A if there is a change in the oxidation states of atoms from reactants to products, the reaction in an oxidation reduction reaction describes the oxidation-reduction .

We know that oxidation is a process that increases the oxidation number, whereas reduction is a process that decreases the oxidation number. An oxidation-reduction (redox) is a type of chemical reaction wherein the electrons are exchanged among distinct strains Any chain reaction that occurs when the oxidation number of the a molecule, atom, or ion modifications by acquiring or losing an electron is an oxidation-reduction reaction. Reduction-oxidation reaction any chemical reaction in which one species oxidizes (loses electrons) while another species reduces (gains electrons) Oxidized. defines an element that has lost electrons and increased its oxidation number

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the complete question is:

Which best describes oxidation-reduction reactions?

A- if there is a change in the oxidation states of atoms from reactants to products, the reaction in an oxidation reduction reaction

B-If there is formation of salt and water, the reaction is an oxidation-reduction reaction.

C-If there is formation of a precipitate, the reaction is an oxidation-reduction reaction.

D-If there is no change in the oxidation states of atoms from reactants to products, the reaction is an oxidation-reduction reaction.

4 0

1 year ago

1.The turgidity pressure direction in the plant cell is antagonized by the effect of

aleksklad [387]

1. The turgidity pressure direction in the plant cell is antagonized by the effect of <u>sap vacuole</u>. Option b is the correct answer.

2. The answer choice above which do not true evidence that the physiological support is a temporary support is:

The deposition of cellulose or lignin in different plant parts

Option c is the correct answer

3. The gaining of the plant cells to the physiological support is accompanied by:

The increase in the concentration of the solution inside the sap vacuole.

Option D is the correct answer

4. In any of these cases the physiological & structural support present together is

The deposition of cutin on the walls of epidermis of spiny fig. Option b

5. The relation between the width of the skull sutures & the age of man is:

No relation between them. Option D

Cell is the simplest, structural, functional and functional unit of life.

There are two types of organisms based on the number of cells they possess. They are:

Unicellular organisms
Multicellular organisms

So therefore, the turgidity pressure direction in the plant cell is antagonized by the effect of sap vacuole

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7 0

2 years ago

The Lac Operon is a set of genes that controls the production of lactase the enzyme that digests

Romashka [77]

Answer:

The lactose present prevents the production of lactase

Explanation:

This question is describing a set of genes in bacteria called LAC OPERON. Lac operon controls the production of lactase, which is the enzyme that digests lactose. However, this gene can be regulated at the transcription level i.e caused to be transcribed or not depending on certain factors.

According to the question, lac operon, which regulates the production of enzymes will be transcribed and subsequently translated i.e. turned on when there is a substrate (lactose) that the produced enzyme will work on. However, when there is no need of the lactase enzyme or there is absence of lactose (substrate), the lac operon gene is turned off.

Note that, the statement that "The presence of lactose prevents the production of lactase" is not correct.

4 0

3 years ago

What type of energy transfer is made possible by a nine-volt battery in a calculator?

AURORKA [14]

C. chemical to electrical

5 0

3 years ago

By age 65, what percentage of adults are grandparents? 75 80 85 90

frutty [35]

85% of adults are grandparents by age 65. This estimation has been made in the U.S. from the surveying of the elderly. So, the correct choice is the third option: 85.

Let me know if you need further info. :)

- Dotz

7 0

3 years ago