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3 years ago

PLEASE HELP I'M IN A TEST! Choose the best explanation for the role and importance of meiosis

Biology

2 answers:

Ksenya-84 [330]3 years ago

7 0

Answer:

We now know that meiosis is the process of chromosomal reduction which allows the production of haploid germ cells necessary for sexual reproduction. Meiosis is furthermore important for its role in enabling genetic diversity and facilitating the repair of genetic defects through recombination.

Explanation: i helped no complaning

Delicious77 [7]3 years ago

4 0

Answer:

Explanation:

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Answer:

alle and the daphina cell

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2 years ago

Kathy was making liquid growth medium for plants. The pH of the original solution was 8. The optimal pH for plant growth is 6. W

liubo4ka [24]

If referring to the question: Kathy was making liquid growth medium for plants. The pH of the original solution was 8. The optimal pH for plant growth is 6. What was the best compound to add to make it pH=6?

A) KOH

B) HCL

C) Water

D) No answer provided

Then the correct answer would be option B, to add HCL, known as Hydrochloric acid to lower the pH to 6.

In science, pH is a scale used to measure the acidity of a solution or its basicity. The scale ranges from 0 to 14. A pH of 7 would mean that the given solution is neutral, lower than 7 equates to an acidic solution, while anything above 7 becomes increasingly basic.

Option A is to add KOH, or potassium hydroxide to the original solution whose starting pH is 8. KOH is a solution whose pH is above 8, a strong base, and is often used to increase the pH of a solution. In the question it states what the desired pH is 6, therefore we want to lower, not increase the pH. This makes option A incorrect.

Water is a neutral solution. Even though it is neutral, it is not used to neutralize basic or acidic solutions. Acid or bases may be added to water to create very diluted solutions that are nearly neutral despite containing a strong base or acid, but this is a different process than neutralization and will not give the desired pH. Option C is also wrong.

Option B is correct because HCL, known as hydrochloric acid is a strong acid, commonly used to lower the pH of a solution by increasing the concentration of hydrogen ions. Since we start with a pH of 8 and wish to achieve a pH of 6, HCL is the correct component to add to the solution. Due to option B being correct, option D that states that no answer is provided, is incorrect.

For more on pH visit:

brainly.com/question/491373?referrer=searchResults

8 0

3 years ago

Which parts of the plants do they show? (A,B,C,D)<br><br>And 21.question please

likoan [24]

Answer no 1:

The part labelled A is the upper epidermis . The main function of the epidermis is to protect the structure of the leaf.

The part labelled B is palisade tissues. These are the sites where the chlorophyll are present.

The part labelled C are the air spaces in the spongy mesophyll tissue. They allow carbon dioxide to move freely.

The part labelled D are the vascular tissues which transport water and food.

Answer No 20:

The correct option is B) Most of the carbohydrates are made in the palisade mesophyll.

The palisade mesophyll comprises of chloroplast which are the sites where photosynthesis takes place. Hence, these will be the sites where carbohydrates will be manufactured.

Answer No 21)

The correct option is A) upper epidermis

As upper epidermis is the first layer of leaf, sunlight will enter through it and be trapped by the chlorophyll present in the palisade mesophyll cells.

6 0

3 years ago

Since Finding Nemo came out in theaters, there has been an increased demand for pet clownfish. Now marine biologists are noticin

just olya [345]

Answer:

there are plenty of things we can do to help build up the sea anemone population, but a few ways would be to either A) mate clownfish to reproduce, B) inform people the issue they're causing, or C) to ban clownfish buying/selling at stores.

pick whichever topic you like best!

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3 years ago

Damage to a brain area called the _____ would MOST likely interfere with learning a conditioned fear response to the sight of a

ELEN [110]

Answer:

The options

A)hippocampus

B)basal ganglia

C)hypothalamus

D)cerebellum

The CORRECT ANSWER IS D)

D)cerebellum

Explanation:

Apart from the coordinating process, the cerebellum is involved in motor learning, emotional behavior, and fear memory.

Fear learning is widely shown in the variation of autonomic and somatic responses, as in heart rate and freezing, promoted by a neutral stimulus which could have been formally grouped with a painful one.

Variation or changes of the vermis influences these responses, and its reversible inactivation in the period of consolidation which is seen to impair fear memory.

The neural correlate of cerebellar activities in fear consolidation is shown by a behaviorally promoted long-term rise of synaptic effectiveness and efficiencies among parallel fibers and a Purkinje cell.

Likely synaptic variations after fear conditioning are well fully observed in the amygdala and hippocampus, suggesting an interplay among emotional circumstances of scenario and the different variations in neural process.

Furthermore, in hotfoot mice, that shows a basic lack of parallel fiber to Purkinje cell synapse, short- and long-term fear memories are influenced.

All these data gives a foundational background on the concept that the cerebellum is majorly involved in fear learning.

The functional interplay of the vermis with hypothalamus, amygdala, and hippocampus do infer to a more complex activities of the cerebellum as a form of an united network that basically influences emotional behavior.

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3 years ago

Read 2 more answers