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Hatshy [7]
3 years ago
5

Which of the following should be given to students before they begin a laboratory experiment?

Biology
2 answers:
Elanso [62]3 years ago
6 0
The instructor should explain the experiment and advise what safety equipment should be used.


Aleks [24]3 years ago
3 0
The things you need to start the experiment is what you need
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At what point in cell division is a chromosome lost so that, after fertilization with a normal gamete, the result is a human zyg
malfutka [58]

Answer:

The correct answer will be option-A

Explanation:

Chromosomal abnormalities are caused when the chromosome pair fails to disintegrate through a process called non-disjunction. The non-disjunction of chromosomes usually takes place at the anaphase I or II of meiosis I which involves the X and Y chromosomes.  

The abnormality observed with 45 chromosomes or reduction in one sex chromosome or 45, XO is caused when one X copy of a chromosome is completely absent in the cell.  

The cause for the loss of one chromosome is the non-disjunction during meiosis I.

Thus, option-A is the correct answer.

7 0
3 years ago
Which of the following statements about the dark reactions is true? a. Dark reactions occur in the thylakoids of chloroplasts. b
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The correct answer for the question that is being presented above is this one: "<span> d. All of the above." Th</span>e following statements about the dark reactions is true are the following: Dark reactions occur in the thylakoids of chloroplasts; Light energy is <span>converted to chemical energy during the dark reactions; Carbon dioxide is converted to sugar using ATP and NADPH during the dark reactions.</span>
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4 years ago
The concept of ""working against resistance"" is a key principle of
sergij07 [2.7K]

The key principle of muscular strength is the concept of "working against resistance. Muscular strength can be defined as the ability to exert force against resistance.

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Muscular strength also refers to the increased ability to move weight and the outcome of that is muscular development.

Resistance training is a type of physical exercise based on muscular contractions aimed at building strength, endurance and size of the skeletal muscles.

Learn more in:

brainly.com/question/12088161?referrer=searchResults

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The land and the aquatic are the two types of global food webs
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