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atroni [7]
3 years ago
12

7. When two or more species live together in a close, long-term relationship, it is called

Biology
1 answer:
alisha [4.7K]3 years ago
8 0
7: symbiotic relationship
8: mutualism 
9: commensalism  

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Which statement is TRUE?
Phantasy [73]

Answer:

A

Explanation:

All living organisms ranging from unicellular prokaryotes to multicellular eukaryotes contain genetic material (DNA). This genetic material is usually found on structures called CHROMOSOMES. Although, the chromosomes are contained in the genome of all living organisms, there are differences.

The genetic material of the bacteria (a typical prokaryote) is a single DNA molecule that makes up its single circular chromosomal material, unlike in eukaryotes that contains double-stranded DNA molecules on linear chromosomes. This single circular chromosome of bacteria is found naked in a region of their cell called NUCLEOID, as they do not possess a membrane-bound nucleus that houses it (a unique characteristics of eukaryotes).

The mitochondrial and Chloroplast DNA mentioned in the other options are all components of eukaryotic cells. Bacteria, as a prokaryote does not contain this organnelles. Hence, they are not single replica.

6 0
3 years ago
Which of the structures are considered accessory organs in the digestive system?
Degger [83]

Answer:

your liver pancreas and gallbladdder

Explanation:

i hope this helps you

8 0
2 years ago
__________are the chemicals that facilitate the flow of electrical impulses from one neuron to the next across nerve synapses; a
Fudgin [204]

Answer:

Neurotransmitters

Explanation:

Neurotransmitters are the chemicals that are released from the axon terminals of the pre-synaptic neurons of the synapse. These chemicals have receptors at the surface of the dendrites of postsynaptic neurons of the synapse. Binding of neurotransmitters to their receptors brings about the excitatory or inhibitory effect on the postsynaptic neuron. Accordingly, the action potential is fired. In this way, electrical signals are passed from one neuron to the next at the synapse. Acetylcholine is an example of neurotransmitters.

6 0
3 years ago
Read 2 more answers
Dinosaurs were definitely cold blooded? true or false?
inysia [295]
This is a false statement. Dinosaurs were indeed fact warm blooded, while some was cold:)
5 0
3 years ago
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What do you think will happen if all the plants on earth disappeared?
hammer [34]

Answer:

well since animals need to feed off each other and some animals eats plants so if the animal that eats plants will be gone, and then the animals that eat animals will be gone and we wont survive because no trees and no food

Explanation:

4 0
2 years ago
Read 2 more answers
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