Unit 4

Question 1

Place the five steps of mitosis in order:

Anaphase
Interphase
Metaphase
Prophase
Telophase

Answer 1

Interphase
Prophase
Metaphase
Anaphase
Telophase

Question 2

When _______ are first formed, they have a nucleus, but it is absorbed before they begin their function in circulation.

red blood cells

white blood cells

platelets

Answer 2

red blood cells

Question 3

________ attack foreign cells directly or secrete an enzyme that immobilizes foreign substances.

Enzymes

Thrombocytes

Nerves

Lymphocytes

Answer 3

Lymphocytes

Question 4

__________ provides a transport system between cell parts and a surface on which reactions may take place.

Centrosome

Mitochondria

Endoplasmic reticulum

Organelles

Answer 4

Endoplasmic Reticulum

Question 5

_________ is the part between the outer cell membrane and the nuclear membrane.

Vacuole

Cytoplasm

Nucleus

Answer 5

Cytoplasm

Question 6

These cells occur as continuous sheets on surfaces where material is transported to the cells.

Sensory cells

Absorptive cells

Nerve cells

Muscle cells

Answer 6

Absorptive cells

Question 7

During mitosis, step three is referred to as _____________ .

metaphase

telophase

prophase

interphase

Answer 7

metaphase

Question 8

_______ is the division of cells in which the genetic material of the cell is duplicated exactly.

Meiosis

Mitosis

Answer 8

Mitosis

Question 9

During mitosis or meiosis, thin fibers called ___________ are attached to the chromosomes.

centromere

gametes

spindle fibers

tetrad

Answer 9

spindle fibers

Question 10

The ________ is found in nearly all cells; it contains the hereditary information and is the control center for the cell.

cytoplasm

nucleus

axion

DNA

Answer 10

nucleus

Question 11

________ are the cells that form layers of bone in the early stages of ossification (bone formation).

Dendrites

Osteoblasts

Basophils

Collagen

Answer 11

Osteoblasts

Question 12

__________ are like a digestive organ and can be used to digest molecular matter or even the cell itself if it is dead or dying.

Golgi bodies

Chloroplasts

Lysosomes

Centrosomes

Answer 12

Lysosomes

Question 13

Sex cells always have half the number of chromosomes that are present in ___________ body cells.

parent cells

somatic

daughter cells

ova

Answer 13

somatic

Question 14

A group of four chromosomes is called (a) _________________.

gametes

parent cells

somatic

tetrad

Answer 14

tetrad

Question 15

____________ are small bodies found on the surface of the endoplasmic reticulum or suspended free of other organelles in the cytoplasm.

Mitochondria

Lysosomes

Centrioles

Ribosomes

Answer 15

Ribosomes

Question 16

What best descibes a cell membrane?

Rigid and pointless

Squishy and open

Rigid and open

Squishy and encloses cell contents

Answer 16

Squishy and encloses cell contents

Question 17

The golgi apparatus processes ____________.

ribosomes

proteins

fats

vacuoles

Answer 17

proteins

Question 18

What makes it impossible for a plant cell/plant to move?

Chloroplasts

Nucelus

Chloroplasm

Cell Wall

Answer 18

Cell Wall

Question 19

The main job of the nucleolus is to make _____.

rRNA

RNA

genes

DNA

Answer 19

rRNA

Question 20

What process takes place in the mitochondria?

Digestion

Oxygenation

Respiration

Photosynthesis

Answer 20

Respiration

Question 21

Which organelle is most associated with a “factory-warehouse?”

Nucleus

Smooth ER

Rough ER

Cell Membrane

Answer 21

Smooth ER