What features are characteristic of Actinopterygii? Actinopterygii are fish that have fins.

2 answers:

6 0

Answer: Characteristics: The fins are supported by rays, as the name indicates. In contrast to the cartilaginous fish they have a rigid skeleton. The swim bladder is also a unique feature of most ray-finned fish, enabling them to maintain buoyancy as they move up or down in the water.

Anika [276]3 years ago

6 0

Actinopterygii are bony fish that have spiny fins.

For future reference, you might want to add "___" to your question to let people know it's a fill in the blank. You could also add the drop down questions as "A. B. C." to show it's a multiple choice question.

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If an ecosystem is no longer able to sustain its biodiversity, what potential impact could that fact have on the carrying capaci

Aneli [31]

What would happen is if there was no ecosystem in biodiversity every organism would become effected in such a impactful way. It would Decrease population in animals and Humans

I really hope this helped :)

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2 years ago

In which of the following ways is DNA replication different from DNA transcription? (4 points)

Margarita [4]

Answer:

<h3>Transcription copies the DNA into RNA, while replication makes another copy of DNA. Both processes involve the generation of a new molecule of nucleic acids, either DNA or RNA; however, the function of each process is very different, with one involved in gene expression and the other involved in cell division.</h3>

Explanation:

So,my answer is,transcription happens outside the nucleus,and replication happens inside the nucleus.

#CARRY ON LEARNING

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2 years ago

What are chromatids and how do they differ from chromosomes

Molodets [167]

Chromatids are only called as chromatids when they are sister chromatids, meaning that when chromosome have two double stranded DNA attached together, each of the double stranded DNA is a sister chromatid, and while the whole thing (the two sister chromatids that are attached together) is called a chromosome.

So after the DNA has been replicated, the chromosome consist of 2 sister chromatids, attached to each other at their centromere.

Overall, sister chromatid is one of the two double stranded DNA in a replicated chromosome, and chromosome is the whole "X" shape that we see. For example, in humans, after the S phase of interphase in the cell cycle, we have 46 chromosomes, with 92 chromatids, since each chromosome is an "X" shape, by having two sister chromatids.

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2 years ago

When blood volume increases to the point that cardiac cells are stretched, the heart releases what natriuretic hormone?

Yuri [45]

The answer to this question would be: Brain Natriuretic Peptide(BNP) and or Atrial Natriuretic Peptide(ANP)

Both BNP and ANP can be found in heart tissue. But BNP is more frequently used because its level is higher, thus the laboratory result could be better. Both BNP and ANP has diuretic, natriuretic and antihypertensive effect that can counter the fluid overload in congestive heart failure. That is why they are secreted when the cells are stretched.

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3 years ago

When does the separation of sister chromatids occur? A. Meiosis 1 B. Meiosis 2 C. Before Meiosis D. After Meiosis

Nata [24]

Answer:

option B is correct that is meiosis 2

Explanation:

the two sister chromatids are separated from each other into two different cells during mitosis or during the second division of meiosis

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3 years ago