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PilotLPTM [1.2K]
3 years ago
6

Definition: Literally, one-celled. Example: Some bacteria are this.

Biology
1 answer:
Andrei [34K]3 years ago
6 0

Answer:

single celled

Explanation:

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A teacher assigns the following experiment to a class. Draw an outline of a bird's feather, and color one half of the outline wi
liberstina [14]

The correct answer is option (D) Lipid molecules are nonpolar because they repel water molecules, which are polar.

Lipids are organic compounds made up of fatty acids and glycerol. A glycerol is a organic molecule with three hydroxyl groups and a fatty acid consists of a long hydrocarbon chain attached to a carboxyl group.

Lipids are hydrophobic, nonpolar molecules with no charge on their ends. Waxes are long chain nonpolar lipids. The water repelling property of the waxes prevent the water sticking to it and appear as water beads on its surface. The hydrophobic hydrocarbon tail of the fatty acids are hydrophobic in nature making them repel water. The presence of wax on the surface of the plants and animals protects them from dehydration.

Thus, the nonpolar property of lipids make it insoluble in the polar solvents like water as there is no interaction or sharing of electrons between them.

7 0
3 years ago
Facilitated diffusion allows certain kinds of compounds that are normally blocked by the cell
Viefleur [7K]

Answer:

Potassium

Explanation:

All of the options are compounds, except for potassium which is an element

8 0
3 years ago
when fossil fuels are burned they produce what the main greenhouse gas responsible for global warming trends
daser333 [38]
When fossil fuels are burned they can cause pollution which can cause global warming. 
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3 years ago
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A manager wanted to test whether the amount of noise in a clothing factory affected how
katrin2010 [14]

Answer:

When seeking to determine the number of shirts made by employees subjected to noise with and without the use of headphones, the dependent variable is the number of shirts made by the employee.

Explanation:

In a study or research, the dependent variable is the result of the intervention on the independent variable, which can be modified. In the case presented, the dependent variable is the quantity of shirts made by the employees, the number of which is measured at the end of the study.

It is expected that those employees who block the noise using headphones produce a greater number of shirts than those exposed totally or partially to noise.

For the other options:

  • <u><em>The amount of noise</em></u><em>. This can modified by the use or not of headphones and is the independent variable, subject to modification.</em>
  • <u><em>The type of music the employees listen to while they work</em></u><em>.  Does not represent dependent or independent variable.</em>
  • <u><em>The amount of training employees need</em></u><em>. It is not the variable being studied.</em>
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4 years ago
Which of the following is a benefit of using fossil fuels?
Oxana [17]

Explanation:

A ) Fossil fuels provide cheaper energy

MARK AS BRAINLIST IF IT IS USEFUL .

4 0
3 years ago
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