Answer:
I think that it is
B. A single layer of phospholipids forms the semipermeable cell membrane
C. The cell membrane contains proteins and lipids, but not carbohydrates.
D. A phospholipid bilayer forms the semipermeable cell membrane.
I hope that this helps you!
Answer: Eight (8) different kinds of gametes can be produced by an individual with the genotype AABbCCddEeFf.
Explanation: Total number of gametes that can be formed can be determined by the formula 2^n where n is the number of heterozygous loci.
The heterozygous loci in the genotype AABbCCddEeFf are Bb Ee and Ff; n = 3
Therefore, 2^n = 2^3 = 2 x 2 x 2 = 8.
If you were to compute this, Angle C should be equal to 100°.
In a triangle, all angles sum up to 180°.
In triangle ABC, where the m∠A =30° and m∠50°:
m∠A + m∠B + m∠C = 180°
30° + 50 + m∠C = 180°
80° + m∠C = 180°
m∠C = 180° - 80°
m∠C = 100°
The triangle should look like the picture attached.
Closes or blink rapidly to protect your eyes
your pupils will also became smaller, so few light source will go through
Answer:
B. pre-zygotic, lock and key
Explanation:
When pollens from the different species fall on the stigma of a flower from some other species, the chemicals released from the stigma do not allow the pollens to germinate. The pollen tube is not formed to carry the male gametes to the egg cell for fertilization. Since this process does not allow the formation of zygote between the male and female gamete of two different species, it is a pre-zygotic isolating mechanism.
Here, the pollens and stigma of different plant species are not compatible with each other and the structural incompatibility of the reproductive structures prevents fertilization. This represents the lock and key mechanism of reproductive isolation.
