ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
PSAT Reading Diagnostic Videos 21 videos
PSAT 1.1 Reading Diagnostic. The main purpose of the first two paragraphs is to...what?
PSAT 1.3 Reading Diagnostic. The author mentions the navigational technique called "equal altitudes" in the third paragraph to ...what?
PSAT 1.4 Reading Diagnostic. In the fourth paragraph, the author checks his chronometer against the timepieces of other ships in order to...what?
PSAT 4.5 Reading Diagnostic 7 Views
Share It!
Transcript
- 00:03
And here's your shmoop du jour brought to you by
- 00:05
scavengers they can be real pests so we recommend just giving them whatever [Scavengers at peoples feet]
- 00:10
there after and sending them on their way ...like the IRS all right check
- 00:15
out the passage....[Mumbling]
- 00:45
How do the naked mole-rats described in passage 2
Full Transcript
- 00:48
not the ones from Kim-possible that the criteria of Hamilton's rule as described
- 00:54
in passage 1 and here are the potential answers... Remember Kim-Possible?
- 00:59
...All right well what do you know Hamilton's rule is rearing its ugly head [Horse chewing hay]
- 01:05
again just when we think we're out it keeps pulling us back in, Godfather 3
- 01:11
ask your parents... Here we're being asked to take a look at the naked [Pictures of naked mole-rats]
- 01:16
mole rats not too close now they'll nip your nose and apply Hamilton's rule to
- 01:20
their interaction and see how it applies well as a refresher Hamilton's rule is
- 01:25
expressed as a formula thats r times B is greater than C which basically means
- 01:32
that altruism among the species will be present if the relationship between the [Hamilton's formula]
- 01:36
members and the benefit to the community outweighs the cost, so penny pinchers are
- 01:42
not welcome here let's take a look at B) for starters there are no cost to
- 01:47
the non-breeding members well that ain't true the non-breeding members don't get [A van and car parked outside a motel]
- 01:51
to do what you know the fun stuff instead while the breeders are having a
- 01:56
grand old time the non breeders are busy building tunnels transporting food and [Trucks transporting food driving by]
- 02:02
so on if you ask them, there is definitely a cost all that labor, not that
- 02:07
they're complaining but just happy to be gainfully employed...okay then what about [Woman labor worker]
- 02:13
C) non-breeding members demonstrate altruism only toward their queens no
- 02:18
royal treatment here everyone in the colony is basically an equal even if [People stood together as equals]
- 02:22
some of them are doing a bit more of the heavy lifting well, we take that
- 02:27
back everyone's an equal except for Claude, that guys a rockstar...Okay so it
- 02:32
isn't C) moving on, D) the cost of some members of a colony are higher than
- 02:37
the cost of others well yeah certain mole rats are footing in OT but that's
- 02:43
only half the equation, literally look at that Hamilton's rule formula [Man working and Hamilton's rule formula appears]
- 02:47
again yeah this option isn't taking into account the benefits just the cost so
- 02:53
option D) is trying to pull the wool over your eyes you dirty mole rat old movie [Man appears shouting you dirty mole rat]
- 02:57
..Okay well then it's got to be A) right the
- 03:02
benefits of working for breeding members outweigh the costs of working that's
- 03:06
totally accurate and also addresses both halves of the formula of course we didn't [Wardrobe doors open and reveals Hamilton's rule]
- 03:11
figure all this out ourselves we just put a couple of non-breeding mole rats
- 03:15
to work for us here at shmoop.. those guys are so industrious [Mole-rat wearing a flat cap]
Related Videos
PSAT 1.1 Reading Diagnostic. The main purpose of the first two paragraphs is to...what?
PSAT 2.2 Reading Diagnostic. What is the main rhetorical effect of this phrase in the second paragraph?
PSAT 1.3 Writing Diagnostic. To make the paragraph most logical, sentence 2 in the second paragraph should be placed...where?
PSAT 1.4 Writing Diagnostic. Which choice most effectively combines the two sentences in the underlined portion?
PSAT 1.5 Writing Diagnostic. How should the underlined portion be changed in the passage, if at all?