Which two structures are not found in animal cells?
a) vacuoles and ribosomes
b) chloroplasts and ribosomes
c) cell walls and chloroplasts
d) endoplasmic reticulum and cell walls
2)
according to the cell theory, where do cells come from?
a) cells can only come from other, pre-existing cells
b) cells are formed from the semi-conservative replication of dna
c) cells can only arise from the complex chemical environment found in organic solutions
d) cells come from other cells and, on rare occasions, from the spontaneous action of inorganic enzymes
3)
plant cells perform photosynthesis, which occurs in the
a) chloroplast.
b) cytoplasm.
c) mitochondria.
d) nucleus.
4)

which organelle is the powerhouse of the cell, the site of cellular respiration?
a) 2 - nucleus
b) 5 - endoplasmic reticulum
c) 6 - golgi bodies
d) 9 - mitochondria
5)

the illustration shows the basic unit of life. it is
a) a cell.
b) an atom.
c) a molecule.
d) an organelle.
6)

cells can best be described as:
a) the smallest form of matter.
b) tiny particles found in food.
c) part of the air people breathe.
d) building blocks of all living things.
7)

plants have a cell wall made of cellulose. what is the function of the cell wall in plants?
a) the cell wall controls division of the cell.
b) the cell wall provides structure to the cell.
c) the cell wall controls the functions of the cell.
d) the cell wall manufactures proteins for the cell.
8)

plants have large central vacuole. what is the function of the central vacuole in plants?
a) the central vacuole stores water.
b) the central vacuole contains dna.
c) the central vacuole controls division of the cell.
d) the central vacuole manufactures proteins for the cell.
9)

this organelle is found in plant cells, contains a green pigment, and is the site of photosynthesis. this organelle is the
a) leucoplast.
b) chloroplast.
c) mitochondrion.
d) golgi apparatus.
10)
the cell theory states that
a) all living things are made of cells.
b) all cells have only one nucleus.
c) plants do not have cells.
d) only animals have cells.
11)

an animal cell: the human body. different but also alike. your brain is the control center of your body. what is the control center of the this animal cell?
a) nucleus
b) ribosome
c) golgi body
d) mitochondria
12)

the picture above is that of a typical plant cell. notice the cell wall. the cell wall's main function is to give rigidity and strength to the plant. this allows plants to grow tall instead of laying flaccid on the ground.
compare the cell wall of the plant cell to the human body. which system is most similar to the cell wall in function?
a) nervous system
b) skeletal system
c) digestive system
d) cardiovascular system
13)

science 25 asap

this organelle is usually small and round in shape. it breaks down larger food molecules into smaller ones, digests waste, recycles old parts and breaks down a cell quickly after it dies. what is this cell organelle called?
a) vacuole
b) mitochondria
c) cytoplasm
d) lysosome