Chapter 2

Question 1

Basic building block of life

Answer 1

cell

Question 2

How many living cells are found in a person

Answer 2

trillions

Question 3

Three macros present in cells

Answer 3

fat, protein, carbs

Question 4

Where are the organelles housed

Answer 4

Cytoplasm

Question 5

A type of food required in large amounts in the diet

Answer 5

Macronutrient

Question 6

Structure in living cells performing specialized metabolic tasks

Answer 6

organelles

Question 7

lipid bi-layer enclosing human cells; protects cells, but allows interaction

Answer 7

Cell membrane

Question 8

thin polar membrane made up of pairs of lipid molecules

Answer 8

Lipid bi-layer

Question 9

Glycoproteins attach to:

Answer 9

extracellular protein and carbohydrate molecules, can span the bi-layer (helix proteins)

Question 10

Glycolipids attach to:

Answer 10

the bi-layer (directly), can be embedded in the in the bi-layer (cholesterol)

Question 11

Percentage of protein and fats in the call membrane

Answer 11

60/40

Question 12

fats that make up the lipid bi-layer

Answer 12

Phospholipids

Question 13

Composed of hydrophilic heads and two hydrophobic tails

Answer 13

phospholipids

Question 14

Amount of cell variation in the human body

Answer 14

more than 200 types

Question 15

bundle of 70-100 mostly undifferentiated human cells

Answer 15

Blastocyst

Question 16

groups of cell having similar structure and acting together to perform function

Answer 16

Tissue

Question 17

Longest cell in the human body

Answer 17

motor neuron

Question 18

Largest human cell

Answer 18

fertilized embryo

Question 19

Four main tissue types

Answer 19

epithelial, muscle, connective, nervous