Biology - Chapter 7

mitochondria

mitochondria

What organelle is the power plant of the cell?

nucleus

What organelle stores the DNA in eukaryotic cells?

ribosomes

What organelle produces proteins?

golgi apparatus

What organelle handles protein modification?

lysosome

What organelle handles cleanup and recycling?

endoplasmic reticulum

Ribosomes embed themselves into what organelle?

cell membrane

What organelle controls what comes in and out of the cell?

cytoskeleton

Microtubules that help give a shell its shape are part of which organelle?

cytoplasm

what is the semifluid substance in the cell that contains the organelles?

vacuole

What organelle stores water?

eukaryotic cells

Human beings have...

A small organ

What does organelle mean?

It controls what goes in and out of the cell.

Why is a cell membrane important to a cell?

They both have cell walls.

What is NOT one of the similarities between prokaryotic and eukaryotic cells?

Prokaryotic cells do not have any DNA.

Which statement is NOT true?

Prokaryotic

_____ cells have no nucleus

False

Cells with no nucleus have no DNA. (true or false;)

False

All cells have cell walls. (true or false)

False

Cell theory states that only some of all living things are made up of cells. (true or false)

True

Cell theory states that all new cells are produced from existing cells (True or False)

Allows you to distinguish between two objects

What is the signification of resolution?

light

What does a light microscope use to see and object?

Light source

In a light microscope, where does the light come from?

stage

What is the specimen placed on?

Condenser lens

What does the light pass through to focus light on the specimen?

Diaphragm

What controls the amount of light that passes through the condenser lens?

It has two lenses to magnify an image

Why is it called a compound light microscope?

False

You should carry the microscope by the arm only. (True or False::)

Stage clips

What secures the slide on the stage?

Multiply

How do you get total magnification? _____ the power of the objective lens & the eyepiece lens.

ATP (Adenosine Triphosphate)

What is the primary source of energy for our bodies?

Higher, lower

Diffusion is the movement of molecules from a region of _____ concentration to a region of _____ lower concentration down the concentration gradient.

water to leave the cell

Placing a human cell in a hypertonic solution will cause:

water to enter the cell

Placing a human cell in a hypotonic solution will cause:

hypertonic

If a cell is placed in a solution having a higher concentration of solutes than the cell, the solution is:

hypotonic

If a cell is placed in a solution having a lower concentration of solutes than the cell, the solution is:

isotonic

If a cell is placed in a solution having the same concentration of solutes as the cell the solution is:

passive

Diffusion is a form of ____ transport

Active

____ transport requires additional energy to be used

True

Placing a cell in a hypotonic or hypertonic solution could kill the cell. (True; or False)

relatively constant internal physical & chemical conditions

Homeostasis can be understood as:

combining to form organs and organ systems

Unicellular organisms maintain homeostasis by all of the following EXCEPT:

ignoring levels that could be dangerous

Multicellular organisms maintain homeostasis by all of the following EXCEPT:

Groups of cells doing a similar function

Tissues are:

Groups of tissues working together

Organs are:

sweating to lower your temperature

An example of negative feedback is:

increasing contractions during childbirth

An example of positive feedback is:

negative

When your body notices that a level is too high or too low and tries to restore the original level, this is:

positive

When your body acts to accelerate or increase the level of an event that has already been started, this is:

negative

Diabetes is related to the body being unstable to regulate blood glucose levels