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Dmitry [639]
3 years ago
14

Which cell junction prevents the movement of solutes between the cells of an epithelial layer?

Biology
1 answer:
Fudgin [204]3 years ago
5 0

Answer:

Gap junctions

Explanation:

Gap junctions form pores that connect adjacent cells. In this way signaling molecules, ions and other substances can pass through the pore to the adjacent cell. This type of cell junctions are important in cardiac muscle responses, in brain signaling, during childbirth, etc.

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Can someone help me with number 7 pls ???
Naya [18.7K]

M1V1=M2V2

M1 * (650 ml) = 0.675 M *450 ml

M1= (0.675 M * 450 ml) / 650 ml

M1= 0.467 M

6 0
3 years ago
Full form of IUA in astronomy​
77julia77 [94]

Answer:

<em>IAU- International Astronomical Union</em>

Explanation:

The  International Astronomical Union (IAU) is an organization consisting of professional astronomers from around the whole world. The astronomers in the  International Astronomical Union (IAU) work together to assign names and probable functions of different celestial bodies being discovered. The aim of the  International Astronomical Union (IAU) is to protect and to safeguard field of astronomy and make progress in this field.

3 0
2 years ago
The first protists probably appeared around a. 1.5 million years ago b. 170 million years ago c. 1.5 billion years ago d. 5 bill
mixer [17]

Answer:

1.5 billion years ago

Explanation:

Protists are a collection formed up of protozoa, unicellular algae, and fungus forms. We will focus on the being part of this society: the protozoa (proto = first, zoa = beings). Protozoa are the earliest discovered collection of heterotrophic living that utilize and modify complicated meal particles into power. Although protozoans are only made up of a single cell, these organisms control to perform all the necessary responsibilities of life.  The protozoa are split into four principal associations: the ciliates, the flagellates, the heliozoans, and the amoebas.

7 0
3 years ago
Read 2 more answers
Which best describes a gene
motikmotik

Answer;

a segment of chromosomal DNA

Explanation;

A gene is a  hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism. Genes undergo mutation when their DNA sequence changes.

It is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins.  However, many genes do not code for proteins.

Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.

5 0
3 years ago
Read 2 more answers
Question 4 (1 point)
Semenov [28]
The correct option is C
5 0
2 years ago
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