Cellular and Molecular Biology Lesson 1 of 5 - Cells

Beschreibung

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

Frage 1

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

Frage 2

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

Frage 3

Frage
Diffusion is______________
Antworten
  • 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

Frage 4

Frage
A concentration gradient ________________
Antworten
  • 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

Frage 5

Frage
hypertonic
Antworten
  • 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

Frage 6

Frage
hypotonic
Antworten
  • 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

Frage 7

Frage
hyper- = ?
Antworten
  • having a lot of something
  • having nothing

Frage 8

Frage
hypo- = ?
Antworten
  • Not a lot of something
  • A big deal

Frage 9

Frage
Osmosis is
Antworten
  • 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

Frage 10

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

Frage 11

Frage
Which has a nucleus?
Antworten
  • eukaryote
  • prokaryote
  • the rock lobster

Frage 12

Frage
Which is not usually as complex or as large as the other?
Antworten
  • prokaryote
  • eukaryote

Frage 13

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

Frage 14

Frage
Which of these is not an organelle?
Antworten
  • ribosome
  • vacuole
  • vesicle
  • plastid

Frage 15

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

Frage 16

Frage
the Chloroplast is the most famous plastid type.
Antworten
  • True
  • False

Frage 17

Frage
Plastids are found in both plant and animal cells.
Antworten
  • True
  • False

Frage 18

Frage
Mitochondria:
Antworten
  • 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

Frage 19

Frage
Plastids have their own DNA.
Antworten
  • True
  • False

Frage 20

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

Frage 21

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

Frage 22

Frage
The step from DNA to RNA is called
Antworten
  • Transcription
  • Translation
  • Replication

Frage 23

Frage
What does DNA stand for?
Antworten
  • Deoxyribonucleic acid
  • Deoxixribonucleic acid
  • Deoxinucleic acid

Frage 24

Frage
What is tRNA?
Antworten
  • 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

Frage 25

Frage
Which of these occur inside the nucleus?
Antworten
  • replication
  • transcription
  • translation

Frage 26

Frage
________: 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.
Antworten
  • Chromosome
  • Chromatin
  • Chromatid

Frage 27

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

Frage 28

Frage
Comes from a word that means "color"
Antworten
  • "chromo"
  • "some"

Frage 29

Frage
Comes from a word that means "body"
Antworten
  • "Chromo"
  • "Some"

Frage 30

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

Frage 31

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