Answer:
a. pipette
Explanation:
The instrument used in the laboratory for measuring base is the pipette.
It is used to suck up the right amount of base for experimental purpose.
- The burette is used for measuring and holding the acid.
- The pipette is often used alongside a burette, conical flask and retort stand during a titration reaction.
- The pipette is a narrow cylindrical pipe usually made up of some special glass.
- It should be handled with caution as it is a very fragile device.
Answer: Farmers use selective breeding for desirable traits. This is considered a type of genetic manipulation.
Explanation:
Answer:
I'm not writing your paragraph for you, but I'll give you some help on it.
Explanation:
2 animals that will compete are ants
they are constantly fighting for new territory
What happens, is that when the attackers come, the scouts for the defenders spray something (I forget what) into the air. This alerts the more heavily armed troops nearby. If the defenders win, the attacks are driven back to their colony. If the attackers win, the ants in the defending colony are either overrun and killed, or they run. If the attackers win, they find all the larvae in the nest and either kill them to stop the line together, or in some cases, eat them.
Hope this helps.
If a repressor protein attaches to the operator, RNA polymerase cannot proceed to transcribe key enzymes needed by the organism. This can be seen in the trp operon in E .coli bacteria.
here you go i hope it helps