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lisov135 [29]
3 years ago
10

What is a cell wall?

Biology
2 answers:
Andreyy893 years ago
5 0
A cell wall is a rigid layer of polysaccharides lying outside the plasma membrane of the cells of plants, fungi, and bacteria
Usimov [2.4K]3 years ago
3 0
A rigid layer of Saccharomyces lying outside the plasma membrane of the cells of plants, fungi, and bacteria. In the algae and higher plants, it consists mainly of cellulose.<span />
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fomenos

Bacteria cells are prokaryotic...

Difference than other cells

1) They do not have a well organized nucleus

2) They do not have a membrane bound organelles

3) They do not have the cell wall.

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3 years ago
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What was the negative affect of zoos on animals we talked about in class?
stira [4]
Nobody can answer since it was spoken about in your class, sorry :)
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Why do asexually reproducing organisms not benefit from recombination? Explain.
s344n2d4d5 [400]

Answer:

Explanation:

While asexual reproduction only involves one organism, sexual reproduction requires both a male and a female. Some plants and unicellular organisms reproduce asexually. Most mammals and fish use sexual reproduction. Some organisms like corals and komodo dragons can reproduce either sexually or asexually. But in the long term (over several generations), lack of sexual reproduction compromises their ability to adapt to the environment because they do not benefit from the genetic variation introduced by sexual reproduction.The key difference between sexual and asexual reproduction is that sexual reproduction involves two parents of the opposite sex while asexual reproduction involves a single parent.

The ability to reproduce and produce a new generation of the same species is one of the fundamental characteristics of a living organism. It involves the transmission of the genetic material from the parental generation to the offspring generation, ensuring the characteristics of the species and perpetuating the characteristics of parental organisms. Before a new individual reaches its own reproductive stage, it normally has to go through a period of growth and development. Some members of the species will die before they reach reproductive age due to predation, disease and accidental death. So the remaining species will only able to produce more offspring and contribute to the continuation of the species. There are two basic types of reproduction; namely, asexual and sexual reproduction.

5 0
3 years ago
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What are the ACSM recommendations for cardiovascular health?
forsale [732]

Answer:

C. 30 min minutes a day 5 days a week of moderate-intensity exercise or 20 minutes a day 3 days a week of vigorously intense exercise

Explanation:

The combination of aerobic and muscle-strengthening physical activity is crucial for a healthy lifestyle. Regular physical activity can help to reduce the risk of cardiovascular and chronic diseases, disability and premature mortality.  

Adults need a moderate physical aerobic activity for a minimum of 30 minutes 5 days a week or 20 minutes of vigorous-intensity aerobic activity. A combination of these two can be done to achieve this goal.

A moderate-intensity physical activity, like <u>fast walking</u>, should produce a noticeable rise in heart rate and breathing. On the other hand, a vigorous-intensity activity, like <u>running</u>, should produce a large and bigger change in heart rate and breathing.

The muscle-strengthening activity, should be performed for a minimum of 2 days a week on two or more nonconsecutive days.

3 0
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The interactions between the red blood cell and important molecules, cells, and organs
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= Includes white blood cells fighting off bacteria and other disease causing organisms and red blood cells carrying dissolved gasses, also red blood cells carry oxygen from your lungs in a protein called hemoglobin through the blood .
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