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Setler [38]
3 years ago
11

If a human cell contains 22 chromosomes and an y chromosome, it is called:

Biology
1 answer:
tatuchka [14]3 years ago
7 0
Humans have 22 chromosome pairs and two sex chromosomes. Females have two X chromosomes; males have an X chromosome and a Y chromosome. ... In humans, animals, and plants, most chromosomes are arranged in pairs within the nucleus of a cell. Humans have 22 of these chromosome pairs, called autosomes.
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Alexander was studying the affect of playing rock music on plant growth. One of the plants was exposed to rock music for 24 hour
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Please help! No plagiarizing please! 6th grade work! Easy and 100 points!! Compare the parts of a cell and the cell as a whole t
larisa [96]

Hello, I did this project in seventh grade, and I still have my notebook from it! Here's the answer I wrote:

<u>A cell is like a restaurant.</u>

The cell membrane controls what goes in and out of the cell. It is like a door because it get things in and out of the cell, much like a door gets people in and out of a restaurant.

The chloroplast makes food for the cell by photosynthesis. It is like the chef because it makes and provides food for the cell, much like a chef makes food for the customers.

The nucleus controls the activities of the cell. It is like the kitchen becuase it holds information in the cell, and the kitchen holds all of the recipes.

The endoplasmic reticulum transports materials around the cell. It is like a waiter because it transports things around the cell, like a waiter transports food around the restaurant.

The mitochondria give the cell energy by breaking down food. It is like a customer becuase it breaks down food and provides energy to the cell, much like how customers eat food that the chef makes and then pay for it, so the business does well.

The cytoplasm holds the organelles and is where chemical reactions take place. It is like the building because it holds all the organelles in the cell, and the building holds all of the restaurant activity.

The vacuole stores food, water, and waste. It is like the refrigerator because both store water and food.

The Golgi bodies pack, fold, and deliver proteins. They are like the take-out boxes in a restaurant because they hold proteins, and take-out boxes pack and hold food.

I really hopes this helps!

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3 years ago
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Maintaining the integrity of the stock reagents is a constant concern in the lab environment. Read the situations and decide if
Anarel [89]

Answer:

Question is incomplete i have added full question at the end of this answer because im not able to add it in ask for detail section.

Answer:

1. Contaminate (Because NaOH is a base while H2SO4 is an acid. If student mix both this will result in chemical reaction.)

2. Contaminate (Because returning regents  are used already id used regents put back in the bottle it will contaminate the fresh reagents.)

3. Contaminate (Using same spatula without sanitation results in mixing of one reagent into other regents which results in failure of experiments.)

4. Does Not Contaminate (It does not have any effect on the reagent because solid reagents are weighted that can be cleaned off when poured into reaction flask.)

5. Does Not Contaminate (Because washing flask after each experiment will wash off the left reagents present in flask.)

6. Contaminate (This will result in contamination because potassium iodide (KI) solution will be mixed with waste)

FULL QUESTION

Maintaining the integrity of the stock reagents is a constant concern in the lab environment. Read the following situations and decide if each represents a valid contamination concern.

1. A student uses a pipet designated for the NaOH solution to pipet the H2SO4 solution.

2. Several students have left-over reagents after the completion of an experiment and decide to return the excess reagents to their original containers.

3. Only one spatula is available to measure out several different white powders.

4.Rather than wasting multiple weigh boats, a student decides to wash and dry a single weigh boat in-between uses.

5. A group of students must use the same 500 mL volumetric flask to make solutions. Between each use they wash and dry the flask.

6. At the end of the day, the waste bottle is so full that a student decides to dump his waste into an almost empty bottle of stock KI solution.

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Hi? I guess
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4) glucose in the blood

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