Question

task 1: fill in the blanks

1. ____ endoplasmic reticulum helps to synthesize proteins.
2. ____ make sugars for the cell.
3. the ____ pressure of the central vacuole helps the plant cell maintain its structure.
4. non - membrane bound organelles called ____ help synthesize proteins.
5. the plural form of mitochondrion is ____.
6. a ____ membrane surrounds both mitochondria and chloroplasts.
7. mitochondria, chloroplasts, rer, ser, golgi and ribosomes are some examples of ____.
8. dna is contained within the ____.
9. dna stands for ____ nucleic acid.
10. the ____ is the liquid portion of the cytoplasm.
11. nuclear ____ are channels in the nuclear membrane.
12. the ____ surrounds the dna and nucleolus.
13. the ____ in a chloroplast makes it green.

Explanation:

1. Rough endoplasmic reticulum has ribosomes on its surface which are involved in protein synthesis.
2. Chloroplasts are the site of photosynthesis where they convert light energy into chemical energy (sugars).
3. Turgor pressure in the central vacuole helps plant cells maintain their shape.
4. Ribosomes are non - membrane bound organelles that are the site of protein synthesis.
5. The plural of mitochondrion is mitochondria.
6. A double membrane surrounds both mitochondria and chloroplasts.
7. Mitochondria, chloroplasts, RER, SER, Golgi and ribosomes are all organelles.
8. DNA is mainly contained within the nucleus.
9. DNA stands for deoxyribonucleic acid.
10. The cytosol is the liquid part of the cytoplasm.
11. Nuclear pores are channels in the nuclear membrane.
12. The nuclear envelope (or nuclear membrane) surrounds the DNA and nucleolus.
13. Chlorophyll in a chloroplast gives it a green color.

Answer:

1. Rough
2. Chloroplasts
3. turgor
4. ribosomes
5. mitochondria
6. double
7. organelles
8. nucleus
9. deoxyribonucleic
10. cytosol
11. pores
12. nuclear envelope (or nuclear membrane)
13. chlorophyll