Answer:
Stem cells are special human cells that are used to repair damaged tissues
Answer:
In multicellular organisms, stem cells are undifferentiated or partially differentiated cells that can differentiate into various types of cells and divide indefinitely to produce more of the same stem cell. Stem cells are undifferentiated cells that can turn into specific cells, as the body needs them. Scientists and doctors are interested in stem cells as they help to explain how some functions of the body work, and how they sometimes go wrong.
Answer:
C. This statement is true because every step in protein synthesis requires enzymes, which are nothing but proteins.
Explanation:
Got it Right on Plato
Answer:
c. limiting factor.
Explanation:
The limiting factors are environmental or ecological factors that act directly on the living beings of a population, limiting their size, since these factors determine their birth, mortality, migrations, etc. They are the ones that regulate the growth and expansion of a species.
If environmental factors are optimal for the development of a living being, they favor the growth of that organism in that biotope. But if any of these factors prevents the growth of a species, there is talk of a limiting factor.
Among these physical and chemical factors that determine the biotope include:
- Abiotic factors (do not depend on population density):
Climate:
Light. Only the most superficial organisms access it in water. On land, there is also competition in leafy areas to access it.
Temperature. Some living beings cannot live at the temperature that others live.
Water: It is necessary that it rains or that living beings can access water in order to live. If there is no water, they die.
Atmospheric pressure.
Non-climatic:
Soil factors: The chemical composition of the soil, its pH, salinity, etc. It makes some plant species may or may not survive in it.
Factors of the aquatic environment: The concentration of O2, dissolved CO2, the degree of salinity, the existence of currents, etc., limits the development of some organisms.
- Biotic factors (depend on population density):
Food. If they do not have enough food, the population will have to be smaller.
Interspecific relationships. The number of predators limits the number of prey, and vice versa.
Intraspecific relationships. The relationships established between individuals of the same species can also limit their existence.
Answer:its c
Explanation: on edg
Answer:
Explanation:
cardiac, since it is releted to heart and blood pressure
B. Old individuals outnumber juveniles in the population as it grows.
C. The resources available are fully used by the population as it grows.
D. Natural selection changes the gene pool of the population as it grows.
Answer:
The right answe is C.
Explanation:
The limit to how large any given population could be is defined by the concept of " carrying capacity". It refers to the fact that in nature populations grow much faster than resources do, and this impose a limit to population sizes (if there is no enough nutrition sources, the number of individual can not go up).
b. Your eyes react faster than your ears.
c. Light travels faster than sound.
d. Sound travels faster than light.
The sound is produced when the ball hits the air, that's when we see a baseball flying through the air before we hear the bat hit. So, the correct option is A.
Sound is defined as the vibration which propagates in the form of an acoustic wave through a transmission medium such as a gas, liquid or solid. Sound is described as the reception of such waves and their perception by the brain.
This is explained as the mechanical disturbance from a state of equilibrium which propagates through an elastic material medium. The sound is produced when the ball hits the air, that's when we see a baseball flying through the air before we hear the bat hit. Musical instruments also produce sound like the sound produced by guitar, sitar, harmonium etc. is musical sound or music.
Therefore, the correct option is A.
Learn more about Sound, here:
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Answer:
Light travels faster than sound.
Explanation:
b. They both lay amniotic eggs.
c. They both have live babies.