When movement occurs against the concentration gradient (low to high), this requires Active Transport.
<u>Explanation:</u>
Substances moving against the concentration gradient, from a lower concentration area to a higher concentration area requires an active transport. It is termed as “active” since there is a requirement of energy usage. This process is in contrast with that of a passive transport. Active transport needs carrier proteins for assistance.
Both active transport and facilitated diffusion requires proteins for assistance in transport process. The difference is that, active transport always takes place against the concentration gradient, thereby moving the substances from lower concentration area to a higher concentration area. The types of proteins that are used for transport will not be same.
Answer:
Tall and short trees are genotypically homozygous for their trait
Intermediated trees are genotypically heterozygous for their trait.
Explanation:
Let the allele representing tall trait be "T"
and the allele representing short trait be "t"
It is given that when a tall and short plant is fused all the offspring are of intermediate height.
This simply means that the both the plants are genotypically heterozygous for their traits
Genotype for tall tree - TT
Genotype for short tree - tt
TT * tt
Tt, Tt, Tt, Tt
All the offspring are of intermediate height.
Now these two plants of intermediate height are crossed
Tt * Tt
TT, Tt, Tt, tt
Out of four plants two are of intermediate height, one is of tall heingth and the remainig one is of short height
Answer:
c. perennial
Explanation:
A silver maple oak tree is an example of a perennial as it can live hundreds of years
Answer:
All populations must have an adequate amount of food, water, shelter, and space to maintain homeostasis
