حل أوراق عمل Cells and Life في العلوم باللغة الإنجليزية للصف السادس (2)

1) In plants cells,

carry out functions related to storage and support.

2) All living things are made up of one or more

3) In addition to being made up of cells, what are six characteristics shared by all living things?

4) What are two functions of the cell membrane?

5) All of the following are principles of the cell theory EXCEPT _____. A) the cell is the smallest unit of life B) water is the main ingredient in every cell C) all new cells come from preexisting cells D) all living things are made of one or more cells

6) Which organelle packages proteins into vesicles to transport from one area of a cell to another? A) Golgi apparatus B) chloroplasts C) mitochondrion D) rough endoplasmic reticulum

7) In a eukaryotic cell, the genetic material is surrounded by a lining. Describe how this is similar or different in a prokaryotic cell.

8) Which of these have prokaryotic cells? A) snails B) frogs C) bacteria D) mice

9) Materials enter and leave the cell through its ___. A) organelles B) DNA C) membrane D) chromatin

10)

In the animal cell shown, structure A is the site where 11)

occurs

In the animal cell shown, structure C is the cell's activities.

, the organelle that directs the

12)

In the animal cell shown, structure D is the production.

13)

, which plays a role in protein

In the animal cell shown, structure E is the and leaves the cell.

, which controls what enters

14) Identify two structures found in a plant cell that are not found in an animal cell.

15) What is the function of the nucleus of the cell?

16) After Hooke's discovery, there was a long gap of time before the cell theory was developed. What is the best explanation for this gap?

17) What is the function of mitochondria?

18) In what organelles do many of the chemical reactions of cellular respiration occur?

A) mitochondria B) chloroplasts C) vacuoles D) vesicles