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3 years ago

Cells, organelles, and tissues are usually measured in __________.

1 answer:

3 0

The cells, organelles, and the tissues of the body are measured in micrometers. The size of the cells, tissues, and various organelles are very small. Majority needs the help of microscope to be seen. Therefore, the larger units of the metric system cannot be used to measure their sizes. Hence, the smaller unit, such as the micrometer is used for their measurement purpose.

The given blank can be filled with micrometers.

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A television advertisement claims that a certain brand of cough drop reduces coughing for 8 hours. Describe an investigation tha

Liono4ka [1.6K]

Answer:

See explanation below.

Explanation:

Study Design - Partially double-blinded study

The cohort study will be composed of 80 adults (aged ≥18 years) with a clinical diagnosis of constant coughing present as a result of a cold, which would be measured by semiautomated ambulatory cough monitor.

This study will be divided into an experimental group and a control group:

No medication (natural drops; e.g. water; saline solution) - Control group
Cough treatment - Experimental group

Data to be collected:

Participant cough will be recorded every hour (until 8 hours are reached) for two consecutive days (for repetitions) in both groups using semiautomated ambulatory cough monitor and analyzed statistically.

Observations:

Experimental group: If coughing is significantly (statistical analysis) reduced within the 8 hours (after repetitions) and a symptom improvement is observed, the hypothesis that cough drops are effective is valid.

Control group: To determine that cough drops treatment is effective, the no-treatment group should score worst and participant should not show significant improvement.

*In scientific experiments, repetitions are important to prevent bias and error.

6 0

3 years ago

Ou just read an article on the Endosymbiotic Theory. Based on what you read, what is the importance of the Endosymbiotic Theory?

VikaD [51]

Answer: The endosymbiotic theory suggests that eukaryotic organisms evolve from primitive prokaryotic organisms.

Explanation:

According to the endosymbiotic theory the organelles like mitochondria and chloroplast in the eukaryotic cells have arisen from aerobic bacteria. The aerobic bacteria being prokaryotic cell was consumed by the anaerobic bacteria or prokaryotic cell.

The following are the evidences of the origin of eukaryotic organisms from prokaryotic organisms:

1. The chloroplast and mitochondria have circular DNA like bacteria.

2. The mitochondria and chloroplast reproduce through binary fission which also occurs in bacteria.

8 0

3 years ago

Where does cell respiration and fermentation happen in cell?

wel

Answer:

Mitochondria

Explanation:

4 0

3 years ago

Non examples of vacuole

monitta

A cabinet or a store they both store water,food,salts,and proteins

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3 years ago

What is scince and physics physics bye friends mai 5pm ko on aunga

max2010maxim [7]

Answer:

THIS IS YOUR ANSWER:

Science is a study of nature human beings plants animals chemicals and machines

and pHySiCs is a part of science

☺✍️HOPE IT HELPS YOU ✍️☺

3 0

3 years ago

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