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poizon [28]
3 years ago
5

How do you know that a cheek cell is an animal cell

Biology
1 answer:
Gre4nikov [31]3 years ago
3 0
Well, do plants have cheeks? No! So it must be an animal cell!
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Inheritance patterns cannot always be explained by Mendel’s models of inheritance. If a pair of homologous chromosomes fails to
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The correct answer is: a. n+1, n+1, n-1, n-1

Nondisjunction is the failure of homologous chromosomes or sister chromatids to separate properly during mitosis  or meiosis. There are three forms of nondisjunction:  

1. failure of a pair of homologous chromosomes to separate in meiosis I ,  

2. failure of sister chromatids to separate during meiosis II, and  

3. failure of sister chromatids to separate during mitosis.

As a consequence of nondisjunction abnormal chromosome numbers appears. If nondisjunction occurs during the meiosis I (anaphase I), this means that at least one pair of homologous chromosomes did not separate. The consequence is two cells that have an extra copy of one chromosome and two cells that lack that chromosome.

4 0
3 years ago
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Read this activity and answer the following questions please..
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Answer:

in the first question

the air move from higher concentration to lower concentration and lower to higher

Explanation:

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and in verse vice

8 0
2 years ago
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The movement of H+ through the ATP synthase is best described as an example of __________. The movement of H+ through the ATP sy
CaHeK987 [17]

Answer:

Facilitated diffusion

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Oxidative phosphorylation, involving the Electron transport chain and Chemiosmosis is the third stage of cellular respiration. The main purpose of the ETC is to build an electrochemical (electrical and concentration) gradient across the inner mitochondrial membrane. It does this by using energy to pump protons (H+ ions) from the matrix to the inter-membrane space of the mitochondria.

Facilitated diffusion, also known as passive transport through channels, is a form of facilitated transport involving a passive movement of molecules along their concentration gradient, through channels called membrane proteins.

During Chemiosmosis of Oxidative phosphorylation, protons (H+) flow back down their concentration gradient (from inter-membrane space to matrix) due to the chemiosmotic gradient that has been formed in ETC. However, hydrogen ions (H+) cannot pass through the inner mitochondrial membrane except through an enzyme (protein) found in the inner mitochondrial membrane called ATP synthase. This protein acts as a machine powered by the force of the H+ diffusing through it, down an electrochemical gradient. This movement of H+ via ATP synthase further catalyzes the conversion of ADP to ATP.

It is an example of facilitated diffusion because H+ ions are diffusing across the inner mitochondrial membrane (from inter-membrane space to matrix) via a protein channel or membrane protein called ATP synthase.

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3 years ago
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it can be made if air is compresed in fossil fuel if it can put so hope it will helo you baba

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