QUESTION 1 Which component of animal cells allows them to gr

QUESTION 1

Which component of animal cells allows them to group and form into tissues and organs?

Extracellular matrix

Glycocalyx

Plasma membrane

Cytoplasm

QUESTION 2

Which of these lipids is the main constituent of plasma membranes?

Fatty acids

Isoprenes

Triglycerides

Phospholipids

QUESTION 3

True or False – The components of a plasma membrane are static once it is formed.

True – The composition of the membrane helps maintain the cell’s shape

False – The constitution and location of membrane components change constantly

False – Only the location of the membrane components changes occasionally

True – Only the shape of the membrane can change as the cell moves

1 points   

QUESTION 4

Cytochalasin D is a metabolite that can be extracted from fungus. It interacts with actin microfilaments by preventing the addition of new monomers at the plus ends. What will be the impact for animal epithelial cells if they are treated with Cytochalasin D?

The microtubules will take over for the microfilaments

Nothing – epithelial cells do not have microfilaments

The microfilaments will only extend at the minus end

The cell’s membrane will not be supported during growth

QUESTION 5

Which one of these structures allows plant cells to exchange small molecules?

Integrins

Tight junctions

Plasmodesmata

Adherens junctions

QUESTION 6

Which one of the following components is not part of the extracellular matrix?

Polysaccharides

Collagen

Fibronectin

Microtubules

Solution

1). a). Extracellular matrix

Tissues and organs are found only in multi-cellular organisms. Cytoplasm, plasma membrane are found both in the unicellular and multicellular organisms. Glycocalyx is found in unicellular organisms such as bacteria and epithelia. As the multicellular organism’s contain extracellular matrix, the cells can be grouped into different organs and tissues.