BIOLOGY MIDDLE SCHOOL

Technician A says that the oil control ring scrapes oil off the cylinder wall with each downward piston stroke. Technician B says that a typical oil control ring consists of two separate pieces. Who is right?A. Technician B only
B. Both Technicians A and B wrong answer
C. Technician A only
D. Neither Technician A nor B
p.s "both"is wrong

Answers

Answer 1
Answer:

Answer:

C. Only tech A is correct

Explanation:

Oil control rings are designed differently than compression rings. A typical oil control ring consists of three separate pieces: two very thin metal rings called scrapers, and a spacer ring called an expander placed in the groove between them.

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Answers

the answer is true !
The answer is true because it does travell thorough vessles

According to the cell theory, why is a car not alive?A. cars do not move on their own
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D. a car is not made out of cells

Answers

D. a car is not made up of living cells
The answer is D we are made of cells but cars are not

After a caterpillar eats a leaf, it can convert tge chemical energy into blank energy to help it build a cocoon

Answers

The blank is mechanical. The leaf as their source of food contains mostly of starch and cellulose.

A destarched variegated plant was left in a sunny garden during the day for several hours.At the end of this period a leaf was taken from the plant and tested for starch. Explain the result observed results

Answers

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Which molecules are used to form cell membranes

Answers

The fundamental building blocks of all cell membranes are phospholipids

In the text area below compare and contrast a cell membrane and cell wall.

Answers

Both cell wall and cell membrane are important parts of the cell, although they each have unique properties and purposes.

Cell membrane:

  • Found in both animal and plant cells.
  • Consisting of a protein-embedded phospholipid bilayer.
  • Flexible and selectively permeable, with the ability to control substances entering and leaving the cell.
  • Plays a role in cell signaling, cell identity, and interactions with the outside world.
  • Essential for maintaining the integrity and appearance of cells.
  • Provides no structural support to the cell.

Cell wall:

  • Found in various protists, bacteria, fungi and plant cells.
  • Chitin is composed of complex polysaccharides such as cellulose or peptidoglycan.
  • Stiffens and provides structural stability and protection to the cell.
  • Allows preservation of cell structure and prevents osmotic pressure-induced cell rupture.
  • Provides protection against contamination and external shocks.
  • Compared to cell membrane, less elastic and selectively permeable.

Learn more about Cell membrane, here:

brainly.com/question/13524386

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A cell membrane, seen in plant and animal cells, is selectively permeable and made of a phospholipid bilayer.

The cell membrane and cell wall control what enters and leaves the cell.

The cell wall is seen in a plant cell, gives shape to the cell, and stores carbohydrates.

The cell wall is selectively permeable and made of cellulose, which causes plants to have a rigid structure.
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