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3 years ago

A student is examining leaf cells. Which organelle is most likely to be missing from the cells?

Biology

2 answers:

Olegator [25]3 years ago

6 0

The organelle which is most likely to be missing from leaf cells is Lysosomes.

Lysosomes are an important organelle for eukaryotic animal cells as they contain the digestive enzymes. The macromolecules or foreign matter which are harmful for the cells enter the animal cells easily but not the plant cells as the plant cells contain cell walls. Phagocytosis or digestion of macromolecules is not much needed in plant cells so a lysosome can be missing from the leaf cell.

IgorC [24]3 years ago

4 0

A cell is the most basic form of life. It is what most of the organisms are made off. For the organism to function, the cell must also function. It has organelles too that helps functions what the microorganisms need. A leaf cell contains chloroplasts that animal cells and other cells do not have. The chloroplast is where the photosynthesis happens. It needs sunlight for the process of photosynthesis. Notice that the leaf has a broader surface area to enable them to be exposed to the sun.

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For what purpose can genetic engineering be used?

Vikentia [17]

Answer:

Genetic engineering has been applied in numerous fields including research, medicine, industrial biotechnology and agriculture. In research GMOs are used to study gene function and expression through loss of function, gain of function, tracking and expression experiments.

Explanation:

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3 years ago

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MRSA has emerged as a serious infectious disease, with the first case of methicillin-resistant S. aureus being detected in 1961.

andreev551 [17]

Answer:

All of the options are true for a MRSA infection.

Explanation:

Staphylococcus aureus is one of the most frequent pathogens causing hospital and community infections. S. aureus can become very easy methicillin resistant (called MRSA isolates) and others beta-lactam antibiotics (are the ones widely used to treat infections) and usually can be resistant to other class of antibiotics, become a very strong bacteria making treatment options very limited. MRSA isolates can rapidly transfer the methicillin resistance to other species of Staphylococcus and some other bacteria. Also S. aureus can acquire other antibiotic resistant genes making a deadly bacterium for its strong resistance. It is in search how the bacterium acquire this antibiotics resistance ( and other virulence factors genes) and the mechanism involve to develop new drugs to treat MRSA infections with the hope that can´t develop resistance to this new drugs.

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3 years ago

What type of carbon cycling occurs when plants take in carbon dioxide from the atmosphere to make food and plants, and animals r

liberstina [14]

Answer:

short-term carbon cycling

Explanation:

my answer points to the idea that it takes a shorter amount of time for the process to occur

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3 years ago

What type of medical direction do standing orders and protocols describe?

MrRa [10]

offline medical direction

It is also called "Indirect" medical direction.

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3 years ago

A key feature of animal body plans is that they can show multiple types of symmetry.For example,,a dog would represent bilateral

Stella [2.4K]

Answer:

A key feature of animal body plans is that they can show multiple types of symmetry.For example,,a dog would represent bilateral symmetry,while a jellyfish and other cnidarians would represent radial symmetry.

Explanation:

In biology, symmetry can be described as the balanced distribution of the body shape of an organism.

Radial symmetry can be described as a symmetry which depends on a central axis. The symmetry of cnidarians depends on a central axis hence they have radial symmetry.

Bilateral symmetry can be described as a symmetry in which the two halves of the symmetry are mirror images of one another. For example, humans, dogs etc.

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3 years ago