20. Which organelle allows materials to move into and out of...

20. Which organelle allows materials to move into and out of cell? a. nucleus b. cell membrane c. chromosomes d. Lysosomes 21. This organelle is filled with digestive enzymes and helps break down old organelles. a. nucleus b. lysosome c. endoplasmic reticulum d. Ribosome 22. Which of the following is not found in plant cells? a. chloroplasts b. cell wall c. lysosomes d. large vacuole 23. Which organelle stores water, waste, and nutrients? a. ribosome b. endoplasmic reticulum c. centrioles d. Vacuole 24. A part of the cell membrane that is made of a polar head region and a non-polar tail region is called a _____ a. phospholipid b. carbohydrate c. protein d. Nucleus 25. This part of the cell membrane provides channels or passageways for ions or molecules to move through. a. carbohydrates b. lipids c. protein d. nucleic acid

Transcript

00:01 Okay, in order to answer this question, let's talk about the cell structure.

00:03 It says, or question number 20 says, which organelle allows materials to move into and out of cells? and the answer for question number 20 is going to be option b, the cell membrane.

00:15 If this is your cell, the cell is going to be surrounded by a cell membrane or plasma membrane.

00:21 And this cell membrane is a semi -permeable membrane because it is going to allow the movement across this cell of specific substances and it is going to prevent the movement of other substances.

00:32 Okay, so the cell membrane is the organelle that is going to allow materials to move into the cell or out of the cell.

00:40 Okay, so this is the answer for this question.

00:42 Now let's go for question 21 that says this organelle is filled with digestive enzymes and health breakdown all organelles.

00:50 And the answer is going to be option b.

00:52 That is lysosome.

00:53 Lysosome is an organelle within the cell.

00:56 That the function of it is cell digestion.

00:59 It means it's going to break down like all organelles, for example.

01:04 Okay, anything that the cell needs to break down, the lysosome is going to be responsible for that.

01:10 Now, let's hope for question 22 that says, which of the following is not found in plant cells? option a says chloroplast.

01:19 And this is not the answer because chloroplasts are found in plant cells, but they are not found in animal cells.

01:25 Then we have option b that says cell wall.

01:28 And this is also true because the cell wall is a structure that is found in plant cells, but it is not found in animal cells.

01:37 Option c says lysosomes.

01:40 And lysosomes is the answer for this question, okay? because lysosomes are practically not found in plant cells.

01:45 Remember that centrosomes and lysosomes are found in animal cells, but they don't exist within plant cells.

01:51 The lysosomes are the animal cells in garabash disposal, while in plant cells the same function takes place in backwalls...

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