Chapter 10 - Triploblastic, Acoelomate Body Plan The Flatworms (Phylum Platyhelminthes)

Characteristics
germ layers
1.
2.
3.
symmetry
(has a head)
Coelem =
Acoelomates = without a
Form and Function
Feeding
carnivores or scavengers; they have a
digestive cavity, mouth and pharynx
- feed on blood, tissues or pieces of cells from
within a HOST
Most do not have a complete digestive system because they absorb
material directly from host
Respiration, Circulation, and Excretion
1.
bodies allow for materials to diffuse
(respiration, excretion, etc)
2.
Cell - specialized cells that remove excess
water and wastes
Response
group of nerve cells that control the body (like a br
- group of cells that can detect light (like an eye)
Movement
Flatworms move in 2 ways
1.
help them glide through the water
cells help them twist and turn

Two male mice, which we will call male a and male b, are both phenotypically normal. male a was from a litter that contained half phenotypically normal mice and half dwarf mice. the mother of male a was known to be homozygous for the normal igf2 allele. male b was from a litter of eight mice that were all phenotypically normal. the parents of male b were a phenotypically normal male and a dwarf female. male a and male b were put into a cage with two female mice that we will call female a and female b. female a is a dwarf and female b is phenotypically normal. the parents of these two females were unknown, although it was known that they were from the same litter. the mice were allowed to mate with each other, and the following data were obtained: female a gave birth to three dwarf babies and four normal babies. female b gave birth to four normal babies and two dwarf babies. which male(s)mated with female a and female b? male a with both females male a with female b, and male b with female a male a with female a, and male b with female b could not be determined male b with both females

What is used as a template during replication? a- mrna b- trna c- rrna d- dna

Vinegar has a ph of 3, and household ammonia has a ph of 11. is the concentration of h+ greatest in the vinegar or ammonia?