HS
Hisham Saleh
Answers (7)
HS
Answered
The jawless fish that is parasitic, attaching itself to and sucking fluids from the tissues of a living fish, is the
A) hagfish.
B) lamprey.
C) coelacanth.
D) skate.
E) ray-finned fish.
A) hagfish.
B) lamprey.
C) coelacanth.
D) skate.
E) ray-finned fish.
On Jul 30, 2024
B
HS
Answered
Explain the correct sequence of events that occurs during the secondary succession of a forest.
On Jul 02, 2024
During secondary succession, there is already soil present. Assumably there will be seeds within the seed bank of the soil and grasses will grow. Next will come the low shrubs, followed by taller shrubs. These will give way to a shrub/tree mix and eventually trees will crowd out the shrubs. Over time, these will mature into taller trees and eventually a climax community.
HS
Answered
Which of the following describes allopatric speciation?
A) Gene flow between subpopulations minimizes differences in their gene pools.
B) A single population suddenly divides into two reproductively isolated groups without being geographically isolated.
C) A geographic separation occurs between subpopulations leading to reproductive isolation.
D) Wide phenotypic differences that appear between subpopulations due to variation in their environments.
E) Subpopulations that are geographically isolated but still able to interbreed.
A) Gene flow between subpopulations minimizes differences in their gene pools.
B) A single population suddenly divides into two reproductively isolated groups without being geographically isolated.
C) A geographic separation occurs between subpopulations leading to reproductive isolation.
D) Wide phenotypic differences that appear between subpopulations due to variation in their environments.
E) Subpopulations that are geographically isolated but still able to interbreed.
On Jun 29, 2024
C
HS
Answered
Which of the following are examples of mobile genetic elements?
A) transposons
B) plasmids
C) pseudogenes
D) a and b
E) a, b, and c
A) transposons
B) plasmids
C) pseudogenes
D) a and b
E) a, b, and c
On Jun 02, 2024
D
HS
Answered
If chromosomes were passed down unchanged from generation to generation, then this state would best be described as
A) linkage equilibrium.
B) linkage disequilibrium.
C) broad sense heritability.
D) physical linkage.
A) linkage equilibrium.
B) linkage disequilibrium.
C) broad sense heritability.
D) physical linkage.
On May 30, 2024
B
HS
Answered
The process by which water moving through soil removes and carries away nutrients is ____.
A) erosion
B) diffusion
C) leaching
D) phytoremediation
E) translocation
A) erosion
B) diffusion
C) leaching
D) phytoremediation
E) translocation
On May 02, 2024
C
HS
Answered
How does UV light damage skin?
On Apr 29, 2024
It causes collagen and elastin fibers to clump, making the skin less elastic and more prone to wrinkling. Damage to DNA can lead to skin cancer. Exposure to UV light can break down folate, one of the B vitamins.