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3 years ago

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.

If you make the question easier to understand, you will get more helpful answers = )

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The SWAG scientist wrote this description (in the picture below) of a cell after looking at it under the microscope. Which type

LenaWriter [7]

Answer:

I think bacterial cell becausea microscope look into small organisms that we can't see with a naked eye

3 0

2 years ago

Classify each nutrient as a macronutrient or as a micronutrient

levacccp [35]

Answer:

Macro: Phosphorous, Protein, Fat, Carbohydrates

Micro: Vitamin A, Sodium

Explanation:

Macronutrients are nutrients that are needed in large amounts. Micronutrients are needed in smaller amounts.

6 0

3 years ago

Humans are diploid organisms, and their gametes contain 23 chromosomes. Fill in the blank in each sentence using the terms. Each

USPshnik [31]

Answer:

2n, n, diploid

Explanation:

When the somatic cells of human are in interphase, the ploidy level is denoted as 2n (diploid). The ploidy level of the human's gametes is denoted as n (haploid). The 2n number of a human is diploid.

Somatic cells are also known as vegetative cells and all somatic cells of humans have diploid number of chromosomes. At interphase, the number of chromosome remains diploid (2n) but the amount to DNA is doubled at the synthesis phase of the interphase.

Human gametes are formed through meiosis - the division of sex cells in the human body. Meiosis results in the halving of number of chromosomes of cells. Hence, all human gametes contain half the number (n = 23) of chromosome of vegetative cells.

Humans are diploid organisms with diploid (2n = 46) number of chromosomes in their vegetative cells.

5 0

2 years ago

How many categories are there on the Modified Mercalli Scale?

nlexa [21]

Answer:

i hope this helps!!?

Explanation:

Giuseppe Mercalli (1850-1914) originally developed the scale, with ten levels. In 1902, Adolfo Cancani extended the scale to include twelve levels. August Heinrich Sieberg completely rewrote the scale. For this reason, the scale is sometimes named Mercalli-Cancani-Sieberg scale, or MCS scale.

3 0

2 years ago

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Many genetic technologies involve the transferring of genes from one organism to another. For example, a gene in human DNA codes

valentinak56 [21]

Answer:

The universality of genetic code.

Explanation:

The DNA is a molecule made up from 4 different nucleotides (A, T, C or G). The sequence in which these nucleotides are ordered constitute a code that gives a cell instructions to produce a specific protein. This is called the genetic code.

Every three nucleotides code for a specific amino acid. For example, ACG codes for Arginine, CUC codes for Proline, and so on.

The genetic code is universal. This means that in all living organisms, a particular sequence of three nucleotides will code for the same amino acid. This property guarantees that the human gene that codes for human insulin will also code for human insulin in bacteria.

5 0

2 years ago

Read 2 more answers