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2 years ago

In some organisms unfertilized eggs become adults. what will their chromosome count be

1 answer:

4 0

The process of development of adults from the unfertilized egg is known as parthenogenesis. Parthenogenesis occurs in insects such as bees, wasps and bumble bees. Normally, males are produced in these insects. The individuals develop from unfertilized eggs and contain the single (haploid) set of chromosome.

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The figure below shows that the original source of energy for all organisms in an ocean food chain is the _____________________.

ella [17]

Sunlight (it is used by zooplankton which are the bases of all life in the marine ecosystem)

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2 years ago

A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in the labor

PSYCHO15rus [73]

A mutation is an alteration in the original DNA sequence. Option 3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

<h3>What is a mutation?</h3>

A mutation is a stable and hereditably change in the genetic material.

Mutations alter DNI sequences and introduce new variants. Many of these variants are eliminated, but some of them might succeed and be incorporated in each individual, affecting the entire species.

They can be damaging or beneficial. These last mutations are the ones that have been selected by natural selection.

Different mutagenic agents cause changes in genetic information, increasing mutations over the normal level. They can change the bases sequences and bases pairing.

Mutations depend on each group's environment and its ecological pressures, and they accumulate in time. They are inherited to the followings generation and get to spread.

According to this framework, the correct option is 3. The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.

If the analyzed chemical is a mutagen, then it will cause an alteration in the DNA sequence and this change -mutation- will pass to the following generations spreading in the population.

You can learn more about mutations at

brainly.com/question/13923224

brainly.com/question/9598940

brainly.com/question/17106056

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A scientist thinks that a certain chemical is a mutagen. She exposes plant cells to a large amount of this chemical in

the laboratory

Which statement best provides evidence that the substance is a mutagen?

The cells die within hours of being exposed to the chemical.
The cells grow more quickly than those that were not exposed to the chemical.
The cells change after being exposed to the chemical, and this change is passed to the next generation of cells.
The cells continue to divide at the same rate as before they were exposed to the chemical.

3 0

1 year ago

Choose the term that best matches the description given.

harina [27]

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<h3>Choose the term that best matches the description given.</h3>

Cells that engulf and destroy bacteria _____.

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Cells that engulf and destroy bacteria <u>phagocytes</u><u>.</u>

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2 years ago

Read 2 more answers

4. Which pathway represents the flow of electrons during photosynthesis? (1 point) A.) H2O > Photosystem I > Photosystem I

Yuki888 [10]

Answer:

4. The correct pathway for the flow of electron during photosynthesis is mentioned in option D. $H_{2}O$ > <em>NADP </em>> <em>Calvin cycle.</em>

Electron is first provided to the photo-system II by the phtolysis of water.
Then it is passed to photo-system I with the help of plastoquinone (PQ) and cytochrome $b_{6}f$ .
Finally, electron from the photo-system II is used to reduce NADP to NADPH.
NADPH and ATP are used in light independent phase or Calvin cycle to synthesize carbohydrate from carbon dioxide.

5. The correct answer is B.) photosynthesis.

Photosynthesis is the process by which green plants synthesize glucose or carbohydrate from carbon dioxide and water in presence of sunlight and chlorophyll.
In light independent phase of photosynthesis, it requires ATP and NADPH in order to synthesize food.
Lastly, oxidation or breaking down of glucose releases energy and photosynthesis is a anabolic process instead of catabolic one.

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2 years ago

Read 2 more answers

Give the atomic number, electron configuration and the number of valence electron if the following elements:

marishachu [46]

Answer:

Atomic number: 13

Electron Configuration:[NE] 3s²3p¹

Valence electron: 3

5 0

2 years ago