Ch. 4 part a

Question 1

Living things are made of cells. Cells can functions as individuals organisms or as the smallest units in a larger organism. These conclusions form the basis of ____.

a. the cell theory
b. meiosis
c. the characteristics of living things
d. mitosis

Answer 1

a. the cell theory

Question 2

A _____ uses lenses to magnify objects, such as cells, hundreds or thousands of times.

a. microscope
b. seismograph
c. periscope
d. spectroscope

Answer 2

a. microscope

Question 3

A group of cells working together is called ___.

a. a system
b. an organelle
c. a unicellular organism
d. a tissue

Answer 3

D. a tissue

Question 4

The _____ provides the extrenal boundary for a cell.

a. cell membrane
b. chromosome
c. cytoplasm
d. nucleus

Answer 4

a. cell membrane

Question 5

the bubble-like storage organelles found in a cell are called _____.

a. chromosomes
b. mitochondria
c. ribosomes
d. vacuoles

Answer 5

d. vacuoles

Question 6

The parts of a cell that act like engines, breaking down food and releasing energy, are called _____.

a. mitochondria
b. DNA
c. chloroplasts
d. vacuoles

Answer 6

a. mitochondria

Question 7

Plants use a green pigment called ____ to absorb energy from sunlight.

a. chloroplasts
b. chlorophyll
c. chromosomes
d. ribosomes

Answer 7

b. cholophyll

Question 8

the part of the cell that provides support for the plant cells is that ____.

a. cytoplasm
b. endoplasmic reticulum
c. mitochondria
d. cell wall

Answer 8

d. cell wall

Question 9

the process by which an organism produces reproductive cells is called ____.

a. classification
b. mitosis
c. meiosis
d. a system

Answer 9

c. meiosis

Question 10

organisms grow and replace cells through the process of _____.

a. classification
b. mitosis
c. meiosis
d. a system

Answer 10

b. mitosis