Ask question

Ask question

All categories

3 years ago

13

in addition to the cell membrane, plant cells have an additional layer separating it from the external environment. Identify thi

s layer

1 answer:

vaieri [72.5K]3 years ago

6 0

Plant cells have a cell wall that adds an additional layer of protection from the external environment.

You might be interested in

Why do cells which lack cell cycle control exhibit karyotypes which look physically different than cells with normal cell cycle?

avanturin [10]

A karyotype is the number and appearance of chromosomes in the nucleus of an eukaryotic cell. Karyotypes also describe the chromosomes count of an organism and the appearance of these chromosomes under the microscope. Cell which lack cell cycle control are often cancerous cells and they look different under the microscope compared to the normal cells. Cancerous cells will look different under the microscope in term of number of chromosomes, size, length, positioning and general appearance.

6 0

3 years ago

_____ is the oldest possible age that members of a species can attain, whereas _____ is the number of years the average newborn

tankabanditka [31]

Maximum life span is the oldest possible age that members of a species can attain, whereas average life expectancy is the number of years the average newborn in a particular population group is likely to live.

<h3>What is life span? </h3>

Every living organisms pass through birth, growth, reproduction, old age, death. this period is called as life span.

<h3>What is death? </h3>

When all life activities are stopped in an individual organisms due to various reasons like ageing, disease, accidents, etc. it is called death.

Also some fully grown living organisms divides physically into two daughters, thus ending its independent existence.

<h3>What is living? </h3>

The objects with specific form and structure exhibits growth, development, reproduction, responsiveness and other unique characteristics of life. it is called living beings.

The living world is wonderful with wide range of living organisms. the earth is populated by various types of plants and animals.

Life is a complex organization of chemical molecules that express itself by chemical reactions leading to specific characteristics like cellular structure, growth, development, reproduction, adaptation, consciousness, death, etc.

Learn more about living here :

brainly.com/question/5836819

#SPJ4

3 0

2 years ago

Which statement describes Redi's experiment, which helped disprove spontaneous generation?

Lelu [443]

Answer:

He examined covered and uncovered meat to determine that maggots came from eggs.

Explanation:

Prior to Redi's experiment and other supporting experiments, it was formerly believed that life could emanate from non-living things, for example, the generation of maggots from rotting meat.

In 1668, a scientist called Francesco Redi disproved the idea of spontaneous generation. He did this when he experimented that the maggots from meats are only as a result of eggs laid by flies when they perched on the meat.

He placed the meat in two jars; an uncovered jar and another in a covered jar with a cloth, after several days, the uncovered jar had maggots on the meat, while the covered jar had no maggot on the meat, but on the cloth. With this experiment, he was able to demonstrate that the maggot arose from the eggs of the flies, not the meat itself which is nonliving and hence, disproved the idea of spontaneous generation.

7 0

3 years ago

Read 2 more answers

how lysosomes may be involved in the removal of the interdigital membrane of the developing mammalian fetus

Mars2501 [29]

Answer:

Lysosomes have the function of digesting substances, this function allows it to be involved in the removal of the interdigital membrane of the developing mammal fetus.

Explanation:

Lysosomes are organelles formed by numerous digestive enzymes. These enzymes allow lysosomes to be able to digest substances and even cellular apparatus, when needed.

The digestive function of lysosomes can be observed in the removal of the interdigital membrane of the developing mammalian fetus, by the action of digestive enzymes that have the ability to remove this entire membrane and any other undesirable tissue for the next stages of development of the fetus.

7 0

3 years ago

Which respiratory disease in which sufferers are often called "pink puffers," is characterized by enlarged alveoli, lung inflamm

vitfil [10]

The correct answer is emphysema.
This respiratory disease occurs when alveoli get enlarged, and thus cause chronic lung inflammation and later on lung fibrosis as well. This person then finds it extremely hard to breathe properly, as airways tend to collapse during expiration.

7 0

3 years ago