Quiz by erica_dietlein, created more than 1 year ago

Notes Taken From Khan Academy Videos for Cellular and Molecular Biology series.

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Cellular and Molecular Biology Lesson 1 of 5 - Cells

Cellular and Molecular Biology Lesson 1 of 5 - Cells

Question 1 of 31

1

___ Is the substance that is more of, the dissolve-r.

Select one or more of the following:

Solvent
Solute
Steve Martin

Explanation

Question 2 of 31

1

____ is the substance that is being dissolved (usually less of).

Select one or more of the following:

Solvent
Solute
Steve Martin

Explanation

Question 3 of 31

1

Diffusion is______________

Select one or more of the following:

The passive movement of molecules along a concentration gradient
The active movement of molecules along a concentration gradient
Dis-arming of nuclear weapons
Steve Martin

Explanation

Question 4 of 31

1

A concentration gradient ________________

Select one or more of the following:

moves from regions of high concentration to low concentration
moves from regions of low concentration to high concentration
is like a grading curve
a scale of concentrations
Steve Martin

Explanation

Question 5 of 31

1

hypertonic

Select one or more of the following:

is Steve Martin
is the higher concentration solution
is the lower concentration solution
is neither higher nor lower concentration
is a kid on pixie stix

Explanation

Question 6 of 31

1

hypotonic

Select one or more of the following:

is Steve Martin
is the lower concentration solution
is the higher concentration solution
is neither higher nor lower concentration
a hippo's tonic and gin

Explanation

Question 7 of 31

1

hyper- = ?

Select one or more of the following:

having a lot of something
having nothing

Explanation

Question 8 of 31

1

hypo- = ?

Select one or more of the following:

Not a lot of something
A big deal

Explanation

Question 9 of 31

1

Osmosis is

Select one or more of the following:

the active movement of water molecules through a membrane
the passive movement of water through a permeable membrane
the passive movement of water through a semi-permeable membrane
diffusion of water from one place to another
Steve Martin

Explanation

Question 10 of 31

1

Osmosis is the movement of water from the

Select one or more of the following:

hypotonic to the hypertonic
hypertonic to the hypotonic
good to the bad
big to the small
hard to the soft

Explanation

Question 11 of 31

1

Which has a nucleus?

Select one or more of the following:

eukaryote
prokaryote
the rock lobster

Explanation

Question 12 of 31

1

Which is not usually as complex or as large as the other?

Select one or more of the following:

prokaryote
eukaryote

Explanation

Question 13 of 31

1

An Organelle is ___________

Select one or more of the following:

a membrane bound substructure in the cell.
an organ
rare in cells
only found in prokaryotes
hard to define

Explanation

Question 14 of 31

1

Which of these is not an organelle?

Select one or more of the following:

ribosome
vacuole
vesicle
plastid

Explanation

Question 15 of 31

1

Which of these organelles have their own DNA?

Select one or more of the following:

plastid
Endoplasmic Reticulum
golgi body
vesicle
mitochondria

Explanation

Question 16 of 31

1

the Chloroplast is the most famous plastid type.

Select one of the following:

True
False

Explanation

Question 17 of 31

1

Plastids are found in both plant and animal cells.

Select one of the following:

True
False

Explanation

Question 18 of 31

1

Mitochondria:

Select one or more of the following:

posses their own DNA inherited from the maternal line
are energy factories for the cell, and produce ATP
have an inner and an outer membrane
are unique only to animal cells

Explanation

Question 19 of 31

1

Plastids have their own DNA.

Select one of the following:

True
False

Explanation

Question 20 of 31

1

In terms of DNA and/or RNA, replication is:

Select one of the following:

when the cell copies itself
the creation of mRNA
The synthesis of a duplicate copy of DNA from a template pair of strands

Explanation

Question 21 of 31

1

During replication, the double stranded DNA is separated by ____

Select one of the following:

DNA helicase
RNA helicase
zipper gene
zipper enzyme

Explanation

Question 22 of 31

1

The step from DNA to RNA is called

Select one of the following:

Transcription
Translation
Replication

Explanation

Question 23 of 31

1

What does DNA stand for?

Select one of the following:

Deoxyribonucleic acid
Deoxixribonucleic acid
Deoxinucleic acid

Explanation

Question 24 of 31

1

What is tRNA?

Select one of the following:

small RNA molecules containing 75 to 95 nucleotides and carriers of amino acids and participate in protein synthesis.
the transcriptional blue print for a protein that is used to code the proteins structure
used to make copies of DNA during replication

Explanation

Question 25 of 31

1

Which of these occur inside the nucleus?

Select one of the following:

replication
transcription
translation

Explanation

Question 26 of 31

1

________: long chains of DNA wrapped around each other. DNA exists like this only during limited periods of the cells life, and DNA is not really usable in this bundled structure.

Select one of the following:

Chromosome
Chromatin
Chromatid

Explanation

Question 27 of 31

1

_______: how DNA usually exists within the cell, in a loose, usable state within the nucleus. DNA + Structural Proteins (such as histones).

Select one of the following:

Chromasome
Chromatin
Chromatid

Explanation

Question 28 of 31

1

Comes from a word that means "color"

Select one or more of the following:

"chromo"
"some"

Explanation

Question 29 of 31

1

Comes from a word that means "body"

Select one or more of the following:

"Chromo"
"Some"

Explanation

Question 30 of 31

1

A structural protein that DNA is wrapped around in the nucleus:

Select one or more of the following:

histone
histamine
helicase

Explanation

Question 31 of 31

1

_______: is an element/part of a chromosome, and is usually joined to another of itself by the centromere of a chromosome.

Select one or more of the following:

chromatin
chromatid

Explanation