PLEASE IN DESPERATE NEED OF HELP!


Cell Division Virtual Lab Activity

Instructions: The Virtual Cell Division Lab is on the lesson assessment page. On the image, it says “Click Anywhere to Start.” Follow the instructions as you move through the lab. The lab activity will keep count of your data on the right, and you can record this into the data table.

Title: Cell cycle

Objective(s):

Hypothesis:

Variables:


Data:
Record the number of cells you observed in the lab activity.

Stages
Number of Cells
Interphase


Prophase


Metaphase


Anaphase


Telophase


Cytokinesis




Observations:
Record any observations about the cells you observed. What does the cell look like for each stage? What is a distinguishing visible feature of each stage of the cell cycle?
Stages
Description of Cell
Interphase


Prophase


Metaphase


Anaphase


Telophase


Cytokinesis



Data Analysis:
Part 1: Calculate the percentage of the cell cycle spent in each stage. Number of cells in given stage ÷ total number of cells counted × 100 = % of the cell cycle spent in this stage

Part 2: Using your percentages in part 1, create a graph that represents the time spent in each stage of the cell cycle.

Insert Chart [Hint: don’t forget to consider the relationship between your data and the type of chart to best represent your data]

Conclusion:
Be sure to answer the following reflection questions as a summary in the conclusion of your lab report:
Was your hypothesis correct? Why or why not? Be sure to include evidence from the data you collected to support your conclusion.
Based on your data, what can you infer about the length of time spent in each stage of the cell cycle?
What stages were the longest and shortest? Give a brief explanation of why these stages may have that time period.

Questions:
Using what you have learned in the lesson and the virtual lab activity, answer the following questions in complete sentences.
What differences can you see when you compare the nucleus of a dividing cell with that of a non-dividing cell?
If your observation had not been restricted to the tip of the onion root, how would the results be different?

Answer:

a plastid that contains chlorophyll and in which photosynthesis takes place.

or

a type of plastid that is involved in the synthesis and storage of foodstuffs

Explanation:

hope this helps :)

Answer:

Chloroplasts are/have

- Oval shaped

- filled with chlorophyll

- have a 2 membrane structure

Chloroplasts are special and unique structures found in plant cells that are king when it comes to turning sunlight into energy for the plant to use. (this process is called chlorophyl)

Hope this helped!

Answer:

Therefore this food is transported to other parts of the plant through a kind of tubes called phloem.

Explanation:

The statement that could explain the reason for the decrease in population of an animal from 800 individuals to 600 individuals is: The population size of the animal's predator increased.

Population refers to a collection or assemblage of individuals of a species of organism. A population decrease means loss of individuals of a species.

Population decrease can be attributed to the following reasons:

This means that a population decrease in the animal in this question could be caused by an increase in the population of predators.

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Answer:

Incisors

Explanation:

Answer:

H

Explanation:

It has the most variation

Hope that helps

Answer:

9

Explanation:

minus 1 point because its only the face.

The discovery that syphilis led to paralysis and to delusions of grandeur

supported the somatogenic perspective.

Somatogenic perspective is defined as personality disorder which arise as a

result in changes in the physiological or biochemical aspect of the body. The

personality trait is delusions of grandeur which is when an individual thinks

he has more power or other traits than normal.

Delusion of grandeur is common in people with Syphilis and can be

classified as being under personality disorder which is why Somatogenic is

the most appropriate choice.

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Answer:

Yes

Explanation:

Write your question first bro.

The controversy surrounding dissociative identity disorder as a diagnosis is that accounts of dissociation based on current diagnostic scales are invalid because the design of the scales increases the possibility of false positives.

Stress may play a role in misdiagnosis because individuals who have experienced stress may be more likely diagnosed as having dissociative identity disorder.

Misdiagnosis is described as an incorrect conclusion about the cause of a disease or problem.

Stress is a reaction marked by emotional exhaustion, depersonalization manifesting in cynicism and detachment from work, and a lack of sense of personal accomplishment.

In conclusion, Misdiagnosis can have serious consequences on a person's health.

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Answer:

How does the mitochondria produce energy for the cell answers key?

Explanation:

Mitochondria are the powerhouses of the cell because they "burn" or break the chemical bonds of glucose to release energy to do work in a cell

Answer:

kidney tissue

Explanation:

Answer:

No, it cannot carry out photosynthesis because the plant will not be able to absorb light as it does not have chlorophyll.

Explaination:

Chlorophyll in plants is used for absorbing energy from light. And, in photosynthesis, light/sunlight is one of the main factors needed, so as the plant cannot absorb light, photosynthesis can't take place.

Answer:

A. True

Explanation:

A portion of social health results from positive community experiences.

Answer:

earth's atmosphere is like the glass in a greenhouse because sunlight streams through the atmosphere and heats the Earth. As the heat radiates up from the Earth's surface, some escapes into space. The rest of the heat is absorbed by gases in the troposphere and warms the air.

Explanation:

I hopes its help :)

In addition to breaking down food so that the nutrients may be absorbed, enzymes also generate vitamins like biotin and vitamin K and protect the body from dangerous microorganisms.

A biological system's ability to self-regulate and maintain stability while responding to shifting environmental factors is known as homeostasis.

The body needs a steady supply of nutrients from food that has been digested. They are crucial for maintaining health and carrying out bodily tasks. The body may absorb and use food that has been broken down by the digestive system.

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Answer:

An increased level of carbon dioxide leads to a higher rate of photosynthesis when compared to the lower carbon dioxide level. This shows that the carbon dioxide level has an effect and is now limiting the rate of photosynthesis.

Explanation:

Answer:

Explanation:75

Answer:

Japan

The Philippines

Germany

Madagascar

India

Sri Lanka

Kenya

Rwanda

Explanation:

Answer:

Maps have the advantage of objectivity and presentation of all phases of mitosis, but their disadvantage is the suppression of information, which can confuse students. A scientific model (or map) must be able to present a scientific process or element as it actually occurs, or as close to it

Explanation:

Regenerative cells are specific types of cells that can be activated in order to restore organs and tissues back to a pre-existing normal state.

In conclusion, regenerative cells are specific types of cells that can be activated in order to restore organs and tissues back to a pre-existing normal state.

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Answer:

Humans (notice how many arrows go towards the humans, and how there are no predators of humans).

Explanation:

Scientists can examine sediment samples to get an idea of when major earthquakes occurred in the past. By measuring the amount of time between events, they can come up with a rough idea of when a major quake might hit.

The Unique feature of Active sites is that active sites are specific to certain substrates (reactants)

Active sites are specific regions of an enzyme where substrate molecules bind in other to bring about a chemical reaction.

The active site is made up of amino acid which forms temporary bonds with the substrate otherwise known as the binding site and the residues which brings about a reaction of that substrate.

Active sites are specific to certain substrates (reactants). Therefore, option (B) is correct.

Active sites are vital to enzymes, proteins that aid biological processes. They have a distinctive form that matches their substrate molecules. This specificity allows only particular substrates to bind to and interact with the active site, catalysing processes. This is called the "lock and key" or "induced fit" model.

Enzymes' catalytic action depends on active sites. A substrate attaches to an enzyme's active site and changes conformation, lowering the reaction's activation energy. This speeds up the reaction. After the reaction, the products are released and the enzyme's active site can bind to another substrate. Therefore, option (B) is correct.

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Answer: second law

Explanation: second law is about force = mass acceleration

Answer:

Regular exercise for example swimming, walks

Increase the content of fiber in food, choose higher fiber cereals and legumes

Desist from waiting or holding in the urge to defecate

Avoid processed or fast foods, white bread, doughnuts, pastries

Drink more fluids, especially water

Eat more fruits as they help relieve constipation. For those with edible skins, do not peel them as they are rich in fiber

Explanation:

Try this

Answer:

1. Take a fiber supplement

2. Eat a serving of higher-fiber food

3. Drink a glass of water

4. Take a laxative stimulant