BIOLOGY HIGH SCHOOL

Onion root tips are often used to study mitosis because they grow very rapidly, which means that many cells are dividing. The very tip of the onion root ends in a structure called the root cap. The other end of the root attaches to the onion. A scientist is interested in determining whether an onion root tip grows from the base of the root or from the tip near the root cap. She counts the number of cells that are in one of the phases of mitosis at different distances from the root cap. What is the dependent variable in her experiment

Answers

Answer 1
Answer:

Answer:

- Dependent variable: number of cells that are in one of the phases of mitosis

Explanation:

In an experiment, the independent variable is the variable that is not changed by the other variables that are being measured during the experiment (in this case, the independent variable is represented by the distances from the root cap). On the other hand, the dependent variable is the variable that is being measured/tested during the experimental procedure and, therefore, is 'dependent' on the independent variable. In consequence, in an experiment, the dependent variable is expected to change as a result of the manipulation of the independent variable.

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Which of these corrects the shift of voice in the following sentence?Nakamura was praying for protection when the front door was flung open by force.

Nakamura was praying for protection when the front door was flung open by the police.
A prayer for protection was being said by Nakamura when a force flung the front door open.
Nakamura was praying for protection when a force flung the front door open.
A prayer for protection was being said by Nakamura when the police flung the front door open.

Answers

Answer:

Option B, A prayer for protection was being said by Nakamura when a force flung the front door open.

Explanation:

A shift in voice of a sentence or statement is considered when there is a change in the tense, person and voice of the  sentence or statement.

Here the given statement is in active voice and in the option chosen the voice is passive. Here the voice is changing from active to passive which is the requirement of producing a shift in voice , thus, option B is correct.
Nakamura was praying for protection when the front door was flung open by the police.

At what level does the snake eat at?

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Answer:Secondary consumers eat herbivores. They are at the third trophic level. In a desert ecosystem, a secondary consumer may be a snake that eats a mouse.

Explanation:

What do all organisms need? Select three options.

Answers

Answer:

food water a place to live

Explanation:

food, water, and protection. A plant is left in a protected greenhouse that pumps in fresh carbon dioxide. The plant also has access to sunlight and can make its own sugar. However, the plant is beginning to die.

Answer:

what are the options?

Explanation:

What is the difference between the cardiovascular system and the respiratory system.

Answers

The cardiovascular  system focuses more on pumping blood all throughout the parts of the body which mean the heart, capillaries, veins, and arteries are all involved in this. The Respiratory System is all about the gas exchange that is happening in your body which involves the lungs, oral and nasal cavities.

What makes a flower complete versus incomplete?

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An incomplete flower is a flower without one or more of the normal parts. 

A complete flower is a flower having all four parts such as sepals, petals, stamens, and carpels.

if a group of____ species lived together in a small area, the cacarrying capacity of that area woukd probaby collapse quickly.

Answers

R-strategist species. These species are those who reproduce quickly and have lots of offspring. Their rapid population growth would overwhem the carrying capacity. 
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