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Lostsunrise [7]
2 years ago
6

When a nutrient moves freely from an area of higher solute concentration into an absorptive cell where the concentration is lowe

r, this is called ______________?
Biology
1 answer:
Margarita [4]2 years ago
7 0
Facilitated diffusion
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In an experiment, the independent variable is the variable you change on purpose. The dependent variable is what you measure. Tr
Strike441 [17]

Answer:

True

Explanation:

An independent variable is the variable you think is the cause,while a dependent variable is the effect. you manipulate the independent variable and measure the outcome in the dependent variable.

3 0
3 years ago
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Among coelomates, which of these develops by spiral cleavage and the mouth forms before the anus
nekit [7.7K]

Answer:

Protosomes

Explanation:

Protosome is a multicellular organism whose mouth grows before the anus from a primary embryonic opening which includesphyla mollusk, arthropod or annelid. Protosomes are developed by  spiral cleavage during embryo development.

Protosome animals have bilateral symmetry and three germ layers. Some of the examples of protostomes are snails and slugs (mollusk), earthworms (annelids), and spiders, lobsters, barnacles (arthropods).

Hence, the correct answer is Protosomes .

8 0
3 years ago
An RNA sequence includes 12 nitrogenous bases, AUGGUGCAUGUC. What is the maximum number of amino acids for which this sequence c
GREYUIT [131]

Answer:

In the mRNA sequence AUGGUGCAUGUC the maximum number of amino acids that can be encoded is 4 (option A).

Explanation:

Messenger RNA (mRNA) has a sequence of nitrogenous bases produced by the transcription of a DNA strand. This sequence of bases is organized in triplets or codons —made up of 3 nitrogenous bases— that can encode an amino acid, or mark the beginning or end —STOP codon—of protein synthesis.

From the sequence:

AUGGUGCAUGUC

Four codons are obtained, each of which encodes a different amino acid:

<em>Codons:          AUG-GUG-CAU-GUC</em>

<em>Amino acids:  Met - Val - His - Val</em>

<em>Methionine Valine Histidina and Valine are the four amino acids encoded by the 12 nucleotide sequence of the mRNA.</em>

8 0
3 years ago
An igneous rock that contains mostly pyroxene and olivine has ?
Masteriza [31]
It sounds like you may be looking for Peridotite, which is a type of ultramafic igneous rock that contain olivine as their main mineral in combination with <span>pyroxenes and amphiboles. I hope this helps! </span>
5 0
2 years ago
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Which of the following items is NOT found on the periodic table?
soldier1979 [14.2K]

Answer:

b

Explanation:

4 0
2 years ago
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