Question

1. What do prokaryotic cells have instead of a nucleus?

2. Fill in the blanks:a. Three organelles and/or cell structures that are found in plant cells, but not in animal cells are: ___________________, __________________, and _____________________.

b. The structure where proteins are manufactured is a: ____________________.

c. An infertile man has a sperm sample tested and discovered the sperm have low motility (don’t swim normally). The malfunctioning cell structure in these sperm is a: ______________________________.

d. Two structures that a material would have to cross to enter the cytoplasm of a plant cell are the ___________________ and the ________________________.

e. ______________________ would be more numerous in muscle cells than skin cells, due to the higher energy needs muscle cells have.

f. The ___________________________ is responsible for manufacturing fats (lipids) for use and storage in a cell.

g. The location where genetic information is stored is the: ___________________.

h. The location in the cell where most organelles can be found is the: ________________________________.

. The ____________________________________ allows some materials to enter the cell, but not others.

3. Fill in the blanks with one (or more) of these choices: plant cell, animal cell, or bacterial cell. Questions may have more than one answer and answers can be used more than once.

a. You observed some cells through a microscope. You did not see any organelles in these cells.These cells are ____________________________________

b. You saw a cell with a flagellum, but it wasn’t a sperm cell. The cell observed is a _______________________________

c. You saw a cell with a cell wall. Which type(s) of cells would not be a correct identification?The cell is not a(n) __________________________________

Answer 1

1. What do prokaryotic cells have instead of a nucleus?

Answer: Nucleoid

Prokaryotes lack a nucleus and membrane-bound organelles. They have a rigid cell wall, cell membrane, and cytoplasm. Their chromosomal DNA is located in a cytoplasmic region called nucleoid.

2. Fill in the blanks:

a. Three organelles and/or cell structures that are found in plant cells, but not in animal cells are: ___________________, __________________, and _____________________.

Answer: Cell wall, Chloroplast, and central vacuole

The plane cells have a rigid cell wall. It is made up of cellulose. The cell wall helps the plant cell to maintain its shape. It contains chloroplasts, the site of photosynthesis. Also the plant cells contain a central vacuole, and it contains 90% of cell volume. The central vacuole maintains the turgidity of the cell.

b. The structure where proteins are manufactured is a: ____________________.

Answer: Ribosome

Ribosome is the site of protein synthesis.

c. An infertile man has a sperm sample tested and discovered the sperm have low motility (don’t swim normally). The malfunctioning cell structure in these sperm is a: ______________________________.

Answer: sperm flagellum

d. Two structures that a material would have to cross to enter the cytoplasm of a plant cell are the ___________________ and the ________________________.

Answer: Cell wall and cell memebrance

e. ______________________ would be more numerous in muscle cells than skin cells, due to the higher energy needs muscle cells have.

Answer: Mitochondria

f. The ___________________________ is responsible for manufacturing fats (lipids) for use and storage in a cell.

Answer: Smooth endoplasmic reticulum

g. The location where genetic information is stored is the: ___________________.

Answer: Nucleus of the cell

h. The location in the cell where most organelles can be found is the: ________________________________.

Answer: Cytoplasm

i. The ____________________________________ allows some materials to enter the cell, but not others.

Answer: Cell membrane (Plasma membrane)

3. Fill in the blanks with one (or more) of these choices: plant cell, animal cell, or bacterial cell. Questions may have more than one answer and answers can be used more than once.

a. You observed some cells through a microscope. You did not see any organelles in these cells.These cells are ____________________________________.

Answer: bacterial cell

b. You saw a cell with a flagellum, but it wasn’t a sperm cell. The cell observed is a_______________________________.

Answer: bacterial cell

c. You saw a cell with a cell wall. Which type(s) of cells would not be a correct identification?The cell is not a(n) __________________________________.

Answer: animal cell