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Anni [7]
3 years ago
5

Katrina inserts a key into her car’s ignition. She turns the key, putting her car into ignition mode. In this mode, some energy

is used to increase the temperature of the car’s fuel. This energy allows the fuel to combust and the car to move. What’s this energy called?
absorbed energy
activation energy
chemical energy
released energy
solar energy
Biology
2 answers:
swat323 years ago
8 0

Answer is chemical energy.

The fuel used in car is petroleum product which is a fossil fuel.  Petroleum products such as petrol or diesel are chemical compounds in which chemical energy is stored in their bonds. When these compounds undergo chemical reactions, resulting in breaking of bonds and releasing energy. When ignition of a car is on, the energy is released when chemical bonds are broken. The released energy is carry out work in the car system.

mario62 [17]3 years ago
4 0

The correct answer is chemical energy.

The energy which is required to start the engine is the chemical energy. The fuel that was used to ignite the temperature of the engine was petrol.

Petrol is a fossil fuel that stores energy in the form of the chemical bonds.

This energy is released when the bonds break and the this released energy is used to start the engine of the car.

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How can insulin deficiency lead to an increase in blood glucose concentration?
MakcuM [25]

When insulin is deficient , GLUT4 transporters are not inserted into the cell membranes , glucose is not transported into the cells and the blood glucose concentration increases.

Insulin deficiency provides more amino acid and glycerol substrates for glucose synthesis  ie increased gluconeogenesis .

With a deficiency of insulin, there is both increased hepatic glucose production through increased glycogenolysis and gluconeogenesis as well as decreased glucose use. The result is hyperglycemia.

To know more about insulin deficiency here

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6 0
1 year ago
What is Potential energy at its highest?
mylen [45]
Conservation of Energy:
As a projectile is launched into the air KE is at its maximum. As the projectile gains altitude PE becomes greater than KE. At the top of its arc, PE is at its maximum. The whole cycle reverses itself on the way down.
8 0
2 years ago
When natural sources of ionizing radiation become increased because of accidental or deliberate human actions such as mining, th
MatroZZZ [7]

The question is incomplete as it does not have the options which are:

artificial

enhanced natural

extraterrestrial

manmade

Answer:

Enhanced natural resources

Explanation:

Natural resources are the resources used by the humans for survival present in the environment or provided by the surrounding environment.The natural resources includes the wood, gas, air, water and other substances.

The substances which emits harmful radiations like radium, thorium, uranium are known as radioactive isotopes.

When these ionizing radiation emitting natural substances increases in the environment due to human activities like the particle accelerators, X-rays and other methods which produces these substances then these substances are refereed to as the enhanced natural substances.

Thus, Enhanced natural resources is the correct answer.

6 0
3 years ago
"We are very familiar with two things found in large woody plants, wood and bark. The wood is essentially made of ________ and t
valina [46]
<h2>Xylem;phloem and cork</h2>

Explanation:

Wood is mainly known as secondary xylem found in trees

  • Xylem is basically the vascular tissue which is responsible for the conduction of water and nutrients from the roots to shoots and leaves
  • Secondary xylem is formed from secondary growth and is associated with lateral growth and grows from the vascular cambium
  • Its cell walls are thickened by deposition of lignin which provides mechanical support to plants and consists of tracheids and vessels that are shorter and wider
  • In large woody plants secondary xylem get differentiated into heartwood and sapwood

Bark is essentially made of phloem and cork

  • Bark sole purpose is to provide protection to trees
  • The inner bark is produced by vascular cambium which consists of secondary phloem whose innermost layer transports food from the leaves to rest of the plant
  • The outer bark is a dead tissue which is the product of cork cambium
8 0
3 years ago
Carl Woese introduced the concept of domains in the 20th century. Which characteristic of scientific knowledge does this highlig
harkovskaia [24]
Option - IT IS BASED ON PREDICTION 
because they have not had any way of telling where or when it has happened or occurred so you must predict how it happens or works.

hope this helps
8 0
3 years ago
Read 2 more answers
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