A signal cascade is a series of chemical reactions which are triggered by a stimulus acting on a receptor that is then transduced to the intracellular space through second messengers. Finally, effector molecules receive the signal causing a cellular reaction to the initial stimulus. A signal cascade is very useful because it facilitates and accelerates the communication between cells that could be in different parts of a living organism. This communication is vital for cell processes in complex multicellular organisms.
Answer:
The aorta.
Explanation:
The right coronary artery supplies blood mainly to the right side of the heart.
Answer:
Has more offspring that have the ability to survive and reproduce themselves.
Explanation:
Evolution fitness can be defined as a characteristic or quality possessed by living organisms and determines their adaptability, as well as level of success in terms of reproduction i.e giving birth to offsprings.
Hence, if you say that a ground squirrel has greater evolutionary fitness than another ground squirrel in the same population, you mean that the animal has more offspring that have the ability to survive and reproduce themselves.
Answer:
Yes, the body does get all the energy from the sun. The body obtains energy by consuming and digesting food that the plant or animal has been going through CR. When we eat animals that eat plants, the energy from CR transfers to the consumer
Explanation:
Answer:
I had to learn spanish and I still am .
but one thing I did was study a lot .take a bunch of notes as well as flash cards they help a lot . I am getting more fluent so I can tell it's definitely helping.
