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Cellular and Molecular Biology Lesson 1 of 5 - Cells

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Notes Taken From Khan Academy Videos for Cellular and Molecular Biology series.
erica_dietlein
Quiz by erica_dietlein, updated more than 1 year ago
erica_dietlein
Created by erica_dietlein over 9 years ago
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Resource summary

Question 1

Question
___ Is the substance that is more of, the dissolve-r.
Answer
  • Solvent
  • Solute
  • Steve Martin

Question 2

Question
____ is the substance that is being dissolved (usually less of).
Answer
  • Solvent
  • Solute
  • Steve Martin

Question 3

Question
Diffusion is______________
Answer
  • 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

Question 4

Question
A concentration gradient ________________
Answer
  • 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

Question 5

Question
hypertonic
Answer
  • 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

Question 6

Question
hypotonic
Answer
  • 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

Question 7

Question
hyper- = ?
Answer
  • having a lot of something
  • having nothing

Question 8

Question
hypo- = ?
Answer
  • Not a lot of something
  • A big deal

Question 9

Question
Osmosis is
Answer
  • 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

Question 10

Question
Osmosis is the movement of water from the
Answer
  • hypotonic to the hypertonic
  • hypertonic to the hypotonic
  • good to the bad
  • big to the small
  • hard to the soft

Question 11

Question
Which has a nucleus?
Answer
  • eukaryote
  • prokaryote
  • the rock lobster

Question 12

Question
Which is not usually as complex or as large as the other?
Answer
  • prokaryote
  • eukaryote

Question 13

Question
An Organelle is ___________
Answer
  • a membrane bound substructure in the cell.
  • an organ
  • rare in cells
  • only found in prokaryotes
  • hard to define

Question 14

Question
Which of these is not an organelle?
Answer
  • ribosome
  • vacuole
  • vesicle
  • plastid

Question 15

Question
Which of these organelles have their own DNA?
Answer
  • plastid
  • Endoplasmic Reticulum
  • golgi body
  • vesicle
  • mitochondria

Question 16

Question
the Chloroplast is the most famous plastid type.
Answer
  • True
  • False

Question 17

Question
Plastids are found in both plant and animal cells.
Answer
  • True
  • False

Question 18

Question
Mitochondria:
Answer
  • 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

Question 19

Question
Plastids have their own DNA.
Answer
  • True
  • False

Question 20

Question
In terms of DNA and/or RNA, replication is:
Answer
  • when the cell copies itself
  • the creation of mRNA
  • The synthesis of a duplicate copy of DNA from a template pair of strands

Question 21

Question
During replication, the double stranded DNA is separated by ____
Answer
  • DNA helicase
  • RNA helicase
  • zipper gene
  • zipper enzyme

Question 22

Question
The step from DNA to RNA is called
Answer
  • Transcription
  • Translation
  • Replication

Question 23

Question
What does DNA stand for?
Answer
  • Deoxyribonucleic acid
  • Deoxixribonucleic acid
  • Deoxinucleic acid

Question 24

Question
What is tRNA?
Answer
  • 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

Question 25

Question
Which of these occur inside the nucleus?
Answer
  • replication
  • transcription
  • translation

Question 26

Question
________: 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.
Answer
  • Chromosome
  • Chromatin
  • Chromatid

Question 27

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

Question 28

Question
Comes from a word that means "color"
Answer
  • "chromo"
  • "some"

Question 29

Question
Comes from a word that means "body"
Answer
  • "Chromo"
  • "Some"

Question 30

Question
A structural protein that DNA is wrapped around in the nucleus:
Answer
  • histone
  • histamine
  • helicase

Question 31

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