Cellular and Molecular Biology Lesson 1 of 5 - Cells

Descripción

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

Pregunta 1

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

Pregunta 2

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

Pregunta 3

Pregunta
Diffusion is______________
Respuesta
  • 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

Pregunta 4

Pregunta
A concentration gradient ________________
Respuesta
  • 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

Pregunta 5

Pregunta
hypertonic
Respuesta
  • 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

Pregunta 6

Pregunta
hypotonic
Respuesta
  • 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

Pregunta 7

Pregunta
hyper- = ?
Respuesta
  • having a lot of something
  • having nothing

Pregunta 8

Pregunta
hypo- = ?
Respuesta
  • Not a lot of something
  • A big deal

Pregunta 9

Pregunta
Osmosis is
Respuesta
  • 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

Pregunta 10

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

Pregunta 11

Pregunta
Which has a nucleus?
Respuesta
  • eukaryote
  • prokaryote
  • the rock lobster

Pregunta 12

Pregunta
Which is not usually as complex or as large as the other?
Respuesta
  • prokaryote
  • eukaryote

Pregunta 13

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

Pregunta 14

Pregunta
Which of these is not an organelle?
Respuesta
  • ribosome
  • vacuole
  • vesicle
  • plastid

Pregunta 15

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

Pregunta 16

Pregunta
the Chloroplast is the most famous plastid type.
Respuesta
  • True
  • False

Pregunta 17

Pregunta
Plastids are found in both plant and animal cells.
Respuesta
  • True
  • False

Pregunta 18

Pregunta
Mitochondria:
Respuesta
  • 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

Pregunta 19

Pregunta
Plastids have their own DNA.
Respuesta
  • True
  • False

Pregunta 20

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

Pregunta 21

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

Pregunta 22

Pregunta
The step from DNA to RNA is called
Respuesta
  • Transcription
  • Translation
  • Replication

Pregunta 23

Pregunta
What does DNA stand for?
Respuesta
  • Deoxyribonucleic acid
  • Deoxixribonucleic acid
  • Deoxinucleic acid

Pregunta 24

Pregunta
What is tRNA?
Respuesta
  • 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

Pregunta 25

Pregunta
Which of these occur inside the nucleus?
Respuesta
  • replication
  • transcription
  • translation

Pregunta 26

Pregunta
________: 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.
Respuesta
  • Chromosome
  • Chromatin
  • Chromatid

Pregunta 27

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

Pregunta 28

Pregunta
Comes from a word that means "color"
Respuesta
  • "chromo"
  • "some"

Pregunta 29

Pregunta
Comes from a word that means "body"
Respuesta
  • "Chromo"
  • "Some"

Pregunta 30

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

Pregunta 31

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