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2 years ago

Why did Darwin keep his theory of natural selection a secret for such a long time?

Biology

1 answer:

marin [14]2 years ago

4 0

Answer:

The long-held view that Charles Darwin avoided publishing his theory of evolution for 20 years because he was afraid of the reaction it would provoke is being rebutted as a myth by a Cambridge University academic.

Explanation:

You might be interested in

What are positive and negative results from genetic engineering in humans?

mezya [45]

Positive Effects of Genetic Engineering-

Disease Prevention

Agriculture

Pharmaceuticals

Transplant

Negative Effects of Genetic Engineering:

Mutations

Herbicides and Pesticides

5 0

3 years ago

Read 2 more answers

Genetic counselors can recommend genetic tests and intepret the results of these tests for individuals. In which instances can a

Luda [366]

Answer:

The answer is A, B, C and E.

Explanation:

Genetic counselors are responsible for recommending genetic testing according to the need of the patient and then guiding them through the process and helping with their decision after interpreting the genetic test results.

Out of the given options in the question, D does not apply to the given statement that if a genetic counselor recommends a genetic test or not because wanting to increase an unborn child's intelligence is unethical and is in the field of genetic engineering which is not approved.

The examples given in the options A, B, C and E are all examples of people that are seeking treatment for themselves either for curing a disease or preventing it and in those cases, the genetic counselor can recommend a genetic test.

I hope this answer helps.

8 0

3 years ago

Read 2 more answers

How does the domain Eukarya differ from the other two domains? A) All organisms in the domain are heterotrophic. B) All organism

Katarina [22]

c is ur answer pls mark brainliest

7 0

3 years ago

Read 2 more answers

Animal and Plant Cell Organelles Use the drop-down menus to determine where these organelles can be found. Ribosome Endoplasmic

rjkz [21]

Answer:

Animal Cell:

Ribosome, Endoplasmic reticulum, Golgi apparatus, small Vacuoles, Lysosomes, Mitochondria, Cell membrane, Cytoplasm.

Plant Cell:

Ribosome, Endoplasmic reticulum, Golgi apparatus, Cell wall, Big Vacuole, Lysosomes, Mitochondria, Cell membrane, Cytoplasm, Chloroplasts.

Explanation:

 Animal Cells Vegetable Cells

Cell wall NO YES

Vacuoles YES, Small and more than ones YES, Only one and big

Chloroplast NO YES

Plasmatic membrane YES YES

Mitochondria YES YES

Lysosomes YES YES

Endoplasmic reticulum YES YES

Golgi apparatus YES YES

Cytoplasm YES YES

Ribosome YES YES

Both the animal and plant cells are eukaryotic. They carry their genetic material in the nucleus and mitochondria. Organelles are located in the cytosol, and both of them are surrounded by a protector cell membrane.

However, they have some differences:

Cell wall: A rigid structure that provides support and protection.

Animal cells do not have a cell wall. They are only surrounded by the cell membrane, which is flexible, so they can adopt different shapes.
Plant cells have a wall, so their shape is usually prismatic and regular. The cell wall is composed mainly of cellulose.

Chloroplast: these are organelles that accumulate chlorophyll.

Animal cells do not have chloroplasts because they do not photosynthesize.
Plant cells have chloroplasts, and they are in charge of the photosynthesis process that allows plants to release oxygen. These organelles use solar light as the source of energy.

Vacuoles:

Animal cells have many and small vacuoles whose function is to store water, ions, and waste intracellular substances.

Plant cells have a unique big-sized vacuole that might occupy almost 90% of the cell. Their principal function is to store water and keep the turgidity. When the vacuole gets empty, the plant loses rigidity.

Other differences are:

The animal cell has centrioles, while the vegetable cell does not.

Plasmodium, chromoplasts, and glyoxysomes are present in the vegetable cell but not in the animal cell.

3 0

2 years ago

You use two drugs (sulfisoxazole and trimethoprim) to treat a bacterial infection and notice that bactericidal activity is enhan

mezya [45]

Antagonsitic effect/interaction/response

In order to combat antiobiotic resistance, and to possibly enhance the activity of antibiotics, they are sometimes used in combinations during treatment. However, three possible responses or effects can manifest.

First is antibiotic synergy, where the combined effect of the antibiotics enhances the activity/potency of the treatment compared to when the antibiotics are administered singly.

The effect is also distinguished from another type of response, which is additive effect, where the combined effect of the antibiotics is more or less equal to the combined activity/potency of each of the antibiotic when applied singly. Antibiotic synergy results in even greater enhancement of the activity of the combined antibiotics compared to additive effect.

Lastly, there is the antagonistic effect or response, where the combined effect of the antibiotics results in the weakening of the potencies of the antibiotics relative to the combined (additive effect) potencies of each of the antibiotics.

4 0

3 years ago