An isotonic solution refers to two solutions having the same osmotic pressure across a semipermeable membrane. This state allows for the free movement of water across the membrane without changing the concentration of solutes on either side.
The choices can be found elsewhere and as follows:
<span>A)
secretions that produce a hard protective skeleton.
B)
the inability to leave the reef and swim after prey.
C)
stinging cells that kill prey and discourage predators.
D)
symbiotic relationships with algae that photosynthesize and feed them.
I believe the correct answer is option B. O</span>ne polyp feature that is detrimental rather than beneficial is the inability to leave the reef and swim after prey. Reefs<span> begin when a </span>polyp<span> attaches itself to a rock on the sea floor, then divides, or buds, into thousands of clones. Hope this helps.</span>
Answer:
Both sodium and potassium ions are transported against their concentration gradients
Explanation:
In the cell, the sodium potassium pump is a type of transport, of the active type.
It requires an energy expenditure and always goes against gradient.
For every 3 Na + that leave, 2 K + enter and the action hydrolyzes an ATP (ADP + P)
Answer:
100%
Explanation:
This is a cross involving two different genes; one coding for seed pod color and the other for height in a plant. The allele for green seed pods (G) is dominant over the allele for yellow seed pod (g) in the first gene while the allele for tallness (T) is dominant over the allele for shortness (t) in the second gene.
According to the question, the two crossed plants are homozygous for their green seed pods and are short. Being homozygous for the green pod means that the parent plant will have a GG genotype for the first gene. A short plant exhibits the recessive trait, hence, will possess an homozygous recessive genotype i.e. tt. Therefore, the genotype of both parents crossed is: GGtt.
Each parent will undergo meiosis to produce gametes with the following allelic combinations: Gt, Gt, Gt and Gt. Using these gametes in a punnet square (see attached image), 16 possible offsprings will be produced and all offsprings will have the genotype: GGtt.
A GGtt offspring will phenotypically possess green seed pods and short traits. Since all the offsprings possess this green seed pod trait, hence, 100% of the offsprings have green seed pods