the answer your looking for is D
Answer:
Autotroph is an organism that produces complex compound on itself and heterotrophs are the one which cannot produce its own food.
Explanation:
- Autotroph are the primary producer that can create the complex compound required for their development from the simple substances that are easily found in the environment.
- Autotroph uses energy from the inorganic chemical reactions and light.
- Heterotrophs depend upon the other nutrition sources because they cannot produce on their own.
- Heterotrophs are consumer where as autotrophs are producer in teh ecosystem.
The answer choices to this question are:
<span>a.
</span>Learned
helplessness.
<span>b.
</span>Stimulus
discrimination.
<span>c.
</span>Aversive
conditioning.
<span>d.
</span>Vicarious
learning.
The best answer choice is:
<span>a. </span>Learned
helplessness
<span>Explanation: Learned helplessness was studied by
Seligman as a potential animal model of depression. Learned
helplessness occurs when people or animals feel helpless to
avoid negative situations. Martin Seligman first observed learned
helplessness when he was doing experiments on dogs. He noticed that the dogs
didn't try to escape the shocks if they had been conditioned to believe that
they couldn't escape.</span>
Answer:
B
Explanation:
CRISPR-Cas9 is a gene-editing mechanism that is harnessed from bacteria’s immune system used to cut apart foreign genetic material such as that of bacteriophages. CRISPR-Ca9 has a guide sequence that is used to identify the target sequence. The Cas9 enzyme cuts this target DNA and is replaced with the required piece.
In cancer treatment, the mutated DNA can be replaced, this way, with the wild type.
