There are two classes of membrane transport proteins—carriers<span> and </span>channels<span>. Both form continuous </span>protein<span> pathways across the lipid bilayer. Whereas transport by </span>carriers<span> can be either active or passive, solute flow through </span>channel proteins<span> is always passive.</span>
Answer:
The correct order for these events is 3, 1, 5, 4, 2
Explanation:
Endochondral ossification is referred to as the process of bone development from hyaline cartilage. Cartilage is systematically replaced by bone to form the growing skeleton. Endochondral ossification process involves chondrocytes enlarge and the surrounding matrix begins to calcify, enlarged chondrocytes die, perichondrial cells become osteoblasts and produce a superficial layer of bone, blood vessels grow around the edges of the cartilage, and osteoblasts replace calcified cartilage with spongy bone.
The correct answer is a. cilia
Answer: b. the output of a system keeps conditions within the body absolutely constant only in a negative feedback loop.
Explanation:
In the negative feedback loop, the feedback reduces the excessive response of the stimulus for example regulation of body temperature, and control of blood glucose level. In the positive feedback loop, the response of a stimulus is intensified. Example, positive feedback is the childbirth and blood clotting. According to the negative feedback loop the output of the system keeps the internal body environment constant with respect to the changes in the external environment hence, maintains the homeostasis.
