Which of the following is/are true of xylem vessels?
Do not possess cross walls and protoplasm to reduce resistance to water flow
Lignin is deposited on cell walls to provide mechanical support
Cells are dead
Cary out active transport of water for faster transport of water
Which of the following describes the composition of chromatin?
Protein and DNA
Protein
DNA
Carbohydrate and DNA
Which of the following is true of vacuoles? Choose one or more answer.
Plants can have more than one vacuole
Animal vacuoles are small, numerous and temporary
Both plant and animal vacuoles have tonoplast
They eliminate excess water, discharge waste and are involved in digestion
Which of the following is true of ribosomes? Choose one or more answer.
Ribosomes synthesize proteins
Ribosomes synthesize fats
Free ribosomes synthesize proteins that are to be secreted out of the cell
Ribosomes bound to the endoplasmic reticulum synthesize proteins that are meant to be used within the cell
Which of the following can be seen under the light microscope? Choose one or more answer.
Large central vacuole
Nucleus
Cell membrane
Chloroplast
Mitochondria
Ribosomes
Cellulose cell wall
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