Your first choice-
Describe the behavior of brown bats
Answer is A.
A pH of 7 is neutral. This is what most plants require to grow.
And since the soil is acidic, to make it neutral, we have to add the opposite of an acid- a base. Calcium carbonate is a base.
So, answer is A.
Answer:
b. Integrins
Explanation:
Integrins are a family of plasma membrane proteins. These proteins are involved in the process of signaling between the cell interior and the extracellular matrix. Integrins are heterodimeric proteins and have two different subunits called alpha and beta which are anchored to the plasma membrane by a transmembrane helix.
Integrins have binding sites for many extracellular macromolecules as they also serve as receptors and signal transducers. Integrin gene codes for the beta subunit of adhesion molecule of leucocytes which is also called CD18. Mutation in this integrin gene results in leukocyte adhesion deficiency in humans.
So base on the question that states and ask to give the name of one cell type that continues to divide throughout a person's lifetime and also on who does not, with that question, the cell that divide through persons lifetime is a Mitosis or skin cells, an example to this is the skin, and the who doesn't divide is i think the brain cells, it doesn't regenerate
Answer:
The statement - When blood sugar is too low, the body sends hormones that raise blood sugar until it reaches a typical level and hormone secretion slows, describes a negative feedback loop.
Explanation:
In the human body, the term homeostasis means the tendency of the various systems in the human body to stay in optimal ranges for health by self regulation through feedback controls. It is very important because it maintains equilibrium and provides stability to the human body. A negative feedback loop (inhibitory loop) is a type of self-regulating system in which increased output from the system inhibits the future production by the system. Example of negative feedback to achieve homeostasis are blood pressure
, body temperature, blood sugar. In blood sugar regulation, the hormone insulin lowers blood glucose when levels are high and the glucagon increases blood glucose when levels are low. In a positive feedback system, the output amplifies the original stimulus. Examples of a positive feedback system are child birth, lactation, blood clotting etc. During child birth, the hormone oxytocin released increases and speeds up the contractions.
