Cellular and Molecular Biology Lesson 1 of 5 - Cells

Descrição

Notes Taken From Khan Academy Videos for Cellular and Molecular Biology series.
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Quiz por erica_dietlein, atualizado more than 1 year ago
erica_dietlein
Criado por erica_dietlein mais de 9 anos atrás
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Resumo de Recurso

Questão 1

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

Questão 2

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

Questão 3

Questão
Diffusion is______________
Responda
  • 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

Questão 4

Questão
A concentration gradient ________________
Responda
  • 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

Questão 5

Questão
hypertonic
Responda
  • 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

Questão 6

Questão
hypotonic
Responda
  • 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

Questão 7

Questão
hyper- = ?
Responda
  • having a lot of something
  • having nothing

Questão 8

Questão
hypo- = ?
Responda
  • Not a lot of something
  • A big deal

Questão 9

Questão
Osmosis is
Responda
  • 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

Questão 10

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

Questão 11

Questão
Which has a nucleus?
Responda
  • eukaryote
  • prokaryote
  • the rock lobster

Questão 12

Questão
Which is not usually as complex or as large as the other?
Responda
  • prokaryote
  • eukaryote

Questão 13

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

Questão 14

Questão
Which of these is not an organelle?
Responda
  • ribosome
  • vacuole
  • vesicle
  • plastid

Questão 15

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

Questão 16

Questão
the Chloroplast is the most famous plastid type.
Responda
  • True
  • False

Questão 17

Questão
Plastids are found in both plant and animal cells.
Responda
  • True
  • False

Questão 18

Questão
Mitochondria:
Responda
  • 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

Questão 19

Questão
Plastids have their own DNA.
Responda
  • True
  • False

Questão 20

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

Questão 21

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

Questão 22

Questão
The step from DNA to RNA is called
Responda
  • Transcription
  • Translation
  • Replication

Questão 23

Questão
What does DNA stand for?
Responda
  • Deoxyribonucleic acid
  • Deoxixribonucleic acid
  • Deoxinucleic acid

Questão 24

Questão
What is tRNA?
Responda
  • 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

Questão 25

Questão
Which of these occur inside the nucleus?
Responda
  • replication
  • transcription
  • translation

Questão 26

Questão
________: 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.
Responda
  • Chromosome
  • Chromatin
  • Chromatid

Questão 27

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

Questão 28

Questão
Comes from a word that means "color"
Responda
  • "chromo"
  • "some"

Questão 29

Questão
Comes from a word that means "body"
Responda
  • "Chromo"
  • "Some"

Questão 30

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

Questão 31

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

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