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aksik [14]
3 years ago
10

These cells, in the blood, carry oxygen and give the blood its color. Please fast as you can

Biology
2 answers:
MakcuM [25]3 years ago
7 0

Answer:

Red blood cells.

Explanation:

Hope this helps!

Sonbull [250]3 years ago
7 0

Answer:  https://kidshealth.org/en/kids/blood.html

Red blood cells: Red blood cells (RBCs, also called erythrocytes; say: ih-RITH-ruh-sytes) are shaped like slightly indented, flattened disks. RBCs contain hemoglobin (say: HEE-muh-glow-bin), a protein that carries oxygen. Blood gets its bright red color when hemoglobin picks up oxygen in the lungs.

Explanation:

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Which of these conditions indicate positive feedback has occurred?
aleksklad [387]

Answer;

A) Blood pressure decreases greatly; blood flow to the heart is inadequate, and blood pressure decreases.

Explanation;

-With negative feedback, the output reduces the original effect of the stimulus. While in a positive feedback system, the output enhances the original stimulus.

-Negative feedback is the most commonly used feedback loop in the body. Negative feedback is used to negate or counteract a stimulus without completely eradicating it.

-One key difference between the two feedback is that positive feedback loops are used to eradicate a stimulus. Another key difference is that responses through positive feedback become more amplified over time. So once a stimulus activates a positive feedback loop it is not turned off until the stimulus is completely removed.

8 0
3 years ago
A student remarks that it is a good thing that humans discovered how to use industrial processes to fix nitrogen because this en
enyata [817]

Answer:

D. The statement is inaccurate because humans would not be able to distribute the product of nitrogen fixation from industrial processes in the same way that bacteria are able to distribute it globally now.

Explanation:

Nitrogen fixing bacteria has the responsibility in nature to trap and fix atmospheric nitrogen in ecosystems. They are very important components of the nitrogen cycle and play an important role in maintaining the balance  of nutrients in nature.

If humans discover industrial processes to fix nitrogen, the process will be unsustainable in the long run if nitrogen-fixing bacteria ever go extinct because humans would not be able to distribute the product of nitrogen fixation from industrial processes in the same way that bacteria are able to distribute it globally now across several ecosystems all over the world.

3 0
3 years ago
What is produced when there is no oxygen present for the muscle cells?
Arisa [49]
Lactate is produced by fermentation
3 0
3 years ago
Raoul practiced a skill for 30 seconds and then rested for 5-seconds between trials. Scarlett practiced the same skill for 30 se
zalisa [80]

Answer:

The correct answer is option B. "Raoul's practice is massed; Scarlett's is distributed".

Explanation:

A massed practice condition is defined as a task that its performed by an individual without taking a significant amount of rest. Since Raoul is only taking 5 seconds of rest between trials, his practice is massed. On the other hand, distributed practice conditions involve resting for longer periods of time. Scarlett is resting 40 seconds between trials, which represents a longer period of time that the trial itself (30 seconds), therefore her practice is distributed.

6 0
3 years ago
1. Which statement shows the direction of the transfer of heat in this experiment?
ivolga24 [154]

Answer:
Light bulb to Paper

Is higher for the black paper

The white paper absorbs less heat

Explanation:

Took on edge, hope this helps!

8 0
2 years ago
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