anatomy Lec 1 #1

Which of the following best describes the role of plasmodesmata in the plant cell wall?

• They are responsible for cell wall synthesis.

• They allow cytoplasmic exchange between neighboring cells.

• They provide structural support to the cell wall.
  

• They assist in the breakdown of cellulose in the cell wall.

Which of the following accurately describes the function of the Rough Endoplasmic Reticulum (ER)?

• Synthesizing lipids for storage and energy use in the cell
  

• Assembling proteins with the help of enzymes bound to its surface

• Synthesizing proteins, which are then transported to the Golgi bodies

• Breaking down carbohydrates to provide energy for the cell

Which part of the chloroplast is responsible for absorbing light energy for photosynthesis?

• Chloroplast envelope

• Stroma

• Grana

• Thylakoid membrane

The middle lamella in plant cells is primarily responsible for:

• Providing rigidity to individual cells

• Holding adjacent cells together

• Absorbing water

• Transporting proteins

Which of the following processes is facilitated by the plasma membrane’s selective permeability?

• DNA replication

• Cellular respiration

• Osmosis

• Photosynthesis

Which of the following is involved in the mechanical strength of plant cells?

• Plasma membrane

• Primary cell wall

• Secondary cell wall

• Cytoplasm

The selective permeability of the plasma membrane is due to the presence of:

• Phospholipids and proteins

• Ribosomes and DNA

• Proteins and starch

• Carbohydrates and minerals

What is the Brownian movement associated with?

• Movement of water molecules

• Movement of cytoplasmic particles

• Movement of organelles

• Movement of the cell

Which component is NOT found in the primary cell wall of plant cells?

• Pectin

• Cellulose

• Lignin

• Hemicellulose

Which of the following substances is not involved in the composition of the secondary wall?

• Lignin

• Chitin

• Cellulose

• Hemicellulose