Question

1a. Which of these organisms possess large central vacuoles in their cells?

1. dandelions
2. grasshoppers
3. elephants
4. cyanobacteria

1b. Primary cell walls of plants contain _________ embedded in a matrix of other complex sugars.

1. pectin
2. lignin
3. chitin
4. cellulose

1c. These small organelles are found in both prokaryotes and eukaryotes, lack membranes and are the sites of protein synthesis:

1. vacuoles
2. ribosomes
3. vesicles
4. leucoplasts

1d. The most prominent organelle within most eukaryotic cells is the __________ (the control center) and the largest subunit within this organelle is the __________.

1. nucleolus; ribosome
2. nucleus; nucleolus
3. endoplasmic reticulum; vesicle
4. mitochondrion; cristae

5. 1e. All are structural features of the nucleus except
   1. contains the nucleolus
   2. double membrane without pores
   3. contains chromosomes
   4. contains DNA

1f. Ribosomal subunits are constructed in the

1. mitochondria
2. nucleolus
3. rough ER
4. smooth ER

1g. The cell membrane has a _________ physical state.

1. solid
2. gaseous
3. semi-solid
4. liquid

1h. Which of the following substances may serve as a carrier molecule (i.e. transports substances across the membrane)?

1. integral proteins
2. glycolipids
3. phospholipids

d. cholesterol

Answer 1

1 vacuole is the cell organelles present in Plants, Animal, Fungi and Bacteria, but the largest vacuoles are generally present in plants cell so the answer is dandelion.

2 answer is Cellulose which is primary cell wall components of a plant cell. It is a polysaccharide of D glucose. Pectin, lignin is complex polysaccharide and chitin is a polysaccharide found in the fungi cell wall.

3 The ribosome is the site of protein synthesis present in both prokaryotes and eukaryotes. Other cell organelles are present in eukaryotes only.

4 answer is Nucleus and Nucleolus

The nucleus is the largest cell organelles found in eukaryotes as contains genetic material and Nucleolus is a subpart of the nucleus. So other options are wrong

5 answer is double membrane without pores. Because nucleus membrane also called Nuclear envelope it's a lipid bilayers membrane and with small pores for transfer of genetic material and all other options are of the nucleus.

6 The nucleolus is the site of ribosome synthesis or assembly. Mitochondria is independent cell organelles and it generates Energy for cell in ATP form. The smooth and rough are a type of ribosome

7 semi-solid we know cell membrane is composed of lipid bilayers with protein embedded inside the membrane. The fluid mosaic model of the membrane is like a sandwich so it can't be a solid or liquid or gaseous form

8 integral protein. It is integrated into lipid bilayers one end is outside and another one inside allows ions to pass across the membrane. Cholesterol is present inside the lipid bilayers while glycolipids and phospholipid are components of bilayers. So this option is incorrect

Thanks