Describe nondisjunction and the effect it can have on a human

Answers

Answer 1

Answer: Nondisjunction is the improper segregation of chromosomes during either meiotic or mitotic cell division.

The result of nondisjunction is dosage imbalance - either one extra or one missing chromosome for some proportion of the resulting cells.

Answer 2

Answer:

Answer:

It is the failure of homologous chromosomes to separate properly during gamete formation (meiosis). Klinefelter syndrome can occur and is seen as males with gametes XXY instead of XY. It affects sex organs, including creating smaller testes and causing sterility. Males can be taller in stature with normal intelligence.

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In a active transport materials move from an area of ? Concentration and use ?

Answers

In active transport, materials move from an area of high concentration to an area of lower concentration (goes down the concentration gradient) and it requires or uses energy in the form of ATP (adenosine triphosphate)

In the mode of transport known as active transport, materials, including molecules and other substances move from an area of low concentration to an area of higher concentration, or the flow of particulates is against the concentration gradient of the cell. Due to this alternate movement of substances that is different from passive transport, energy is required for the transport of said particles. The form of energy can come from many different sources whether it be the proton motive force, and ATP. Specifically carrier proteins help assist in the movement of certain particles that cannot easily bypass the plasma membrane of a cell.

Negative effects of the use of chemical fertilizers

Answers

Leads to high pollution that makes global warming more dangerous

Which of the following organisms does NOT require sunlight to live?a. chemosynthetic bacteria
b. algae
c. trees
d. photosynthetic bacteria

Answers

A. chemosynthetic bacteria =)

How many total hydrogen (H) atoms are present in the reactants side of the equation C2H5OH+3O2→2CO2+3H2O?

Answers

there are 6 hydrogens on the reactants side

Final answer:

The reactant side of the given chemical equation C2H5OH + 3O2 → 2CO2 + 3H2O contains six hydrogen atoms.

Explanation:

The chemical equation in question is C2H5OH + 3O2 → 2CO2 + 3H2O. This refers to the reaction of ethanol (C2H5OH) with oxygen (O2), producing carbon dioxide (CO2) and water (H2O). From the chemical equation, the reactants side contains one ethanol molecule containing six hydrogen atoms. Hence, in terms of reactants, the number of hydrogen atoms involved in the equation is 6.

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A fossil bone is tested, and no c-14 is found. What can be said about the fossil's age?A.it's 5,730 years old
B.it's less than 5,730
C.it's more than 5,730

Answers

The answer is C. Its more than 5,730 years old.

Answer:

The correct answer is C. it's more than 5,730 years old Hope this helps!

The study of which structure was instrumental in the formulation of the modern cell theory? A. plant cell
B. animal cell
C. cell membrane
D. DNA molecule

Answers

The study of the DNA molecule was instrumental in the formulation of the modern cell theory.

The contemporary cell theory, a key idea in biology, asserts that all living things are made up of one or more cells, that cells are the essential building blocks of life, and that all cells develop from already-existing cells. This notion was developed in large part as a result of research into the DNA molecule.

Significant insights into the mechanisms underpinning cellular operations and heredity have been gained through understanding DNA's structure, function, and involvement in genetic inheritance. The notion that cells are the basic unit of life and carry the genetic information essential for an organism's growth, development, and survival was further cemented by findings linked to DNA replication, gene expression, and mutations.

As a result, the comprehensive and widely embraced contemporary cell theory was made possible by research into the DNA molecule.

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A cell wall was instrumental. Hope I helped!

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