cell structure and functions

Question 0

Which of the following is not true of a cell membrane?
A. Cell membranes allow All substances to pass through easily
B. It is selectively permeable so only certain molecules can pass through it
C. It acts more like a fluid than a solid because its molecules are constantly moving
D. Cell membranes surround all animal, plant, and bacterial cells
E.It is a bilayer composed mainly of phospholipids and proteins

Answer 0

A. Cell membranes allow All substances to pass through easily

Question 1

The nucleus includes all of the following except 
A. cytoplasm
b. nuclear envelope
c. DNA
d. nucleolus
e. chromatin

Answer 1

a. cytoplasm

Question 2

substances produced in a cell and exported outside of the celll would pass through

Answer 2

endoplasmic reticulum and Golgi apparatus

Question 3

cells like muscle cells which require lots of energy would probably have many

Answer 3

mitochondria

Question 4

viruses, bacteria, and old organelles that a cell wants to get rid of are broken down in

Answer 4

lysosomes

Question 5

the structure that synthesize proteins in cells are the

Answer 5

ribosomes

Question 6

the dark spot seen in the nucleus in non-dividing cells where RNA for ribosomes is made is called the

Answer 6

nucleolus

Question 7

the organelle that makes steroids in gland cells, regulates calcium in muscle cells, and breaks down toxins in liver cells is the

Answer 7

smooth ER

Question 8

the cells organelles that are surrounded by Double membranes and contain their own dna are the

Answer 8

nucleus, chloroplasts and mitochondria

Question 9

One difference between eukaryotes and prokaryotes is that

Answer 9

eukaryotes have membranes around their nucleus and organelles and prokaryotes dont

Question 10

vacuoles are ______ in plant cells than in animal cells

Answer 10

larger