Answer:
An inversion
Explanation:
An inversion occurs when a chromosome breaks in two places; the resulting piece of DNA is reversed and re-inserted into the chromosome. Genetic material may or may not be lost as a result of the chromosome breaks.
Your answer would be Sand.
If you go to the beach, and try making balls in your hand it's nearly impossible. If you pick up sand it will just fall through the crevice's in your hand, or a simple movement of your hand can make the sand fall. Sand simply can't be formed into a ball.
If you where to try making a ball of sand the outcome wouldn't be great. Even if you made the sand damp you still can't really make a ball of sand.
Answer:
1.Sea urchins are powerful primary consumers in the kelp forest. 2. Kelp is the producer in the kelp forests. 3. Bat star are omnivores and scavengers and at the end of the food web are tertiary consumers. 4 Phytoplankton are primary producers. 5. Zooplankton is a primary consumer in the food web.
Explanation:
1.Sea urchins are powerful primary consumer in the kelp forest because they are needed to keep the kelp anchored to the bottom of the ocean and algae . 2. Kelp is the producer in the kelp forest kelp forests provides an ecosystem for many organisms from the sea floor to the surface and provides shelter for many forms of sea life. 3. As a scavenger bat star is important in the ecosystem helping clean dead animals, and algae from the seafloor, the bat star keeps the seafloor healthy. 4. Phytoplankton are accounted for about half of photosynthesis on the planet, which makes them an important producer of oxygen, and serves as food source for smaller sea organisms, they consume carbon dioxide that would otherwise dissolve in the sea water making it more acidic. 5. Zooplankton are the animal like primary consumers of plankton community they also provide the base for the entire food web also if plankton disappeared it would increase the levels of carbon in our air.
Answer: The true statement is: Autocrine signals are produced by and act upon the same cell
Explanation:
Autocrine signals are made by cells producing hormones or molecules that acts on the same cell that produces it.
Usually, these autocrine hormones bind to receptors positioned in the cells producing them and thereby signal/exert changes in the cell.
Other options contains false statements
- Steroid hormones are produced ONLY when needed, not produced in advance and then stored
- Neurohormones do not help in the transmission of nerve impulses; So, they ARE NOT neurotransmitters
- Paracrine signals exert their effects on nearby cells; thus, they are not for long distance communication.
The ONLY true statement is that 'Autocrine signals are produced by and act upon the same cell.'
