BIOLOGY HIGH SCHOOL

Where in eukaryotic cells does protein synthesis take place

Answers

Answer 1
Answer: ribosomes! 
ribosomes are found outside of the nucleus, in the cytoplasm. 

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In a trophic pyramid, which of the following populations would be found in the trophic level directly above the producers?a. hawks
b. rabbits
c. snakes
d. trees

Answers

The answer is b. rabbits.

Rabbits are herbivores and thus primary consumers in a trophic pyramid.
On the first trophic level are producers. Trees, together with other plants, are able to make their own food, so they are producers. Herbivores, such as rabbits, eat plants. So they are primary consumers and just above the producers in the trophic level. Secondary consumers, which are carnivores, eat herbivores. An example is a snake. Tertiary consumers are carnivores too. They eat other carnivores. For example, a hawk is a tertiary consumer.

Answer:

b

Explanation:

Which of the following is NOT part of the water cycle?a) fixation
b) precipitation
c) condensation
d) evaporation

I think it is a but I'm not sure. I don't remember going over this in class

Answers

a fixation. precipitation is rain and snow condensation is what forms clouds and evaporation is when water from bodies of water go back to the sky

What is an important characteristic of the plant cell wall?a. It is fluid.
b. It is rigid.
c. It is alive.
d. It stretches.gy

Answers


The best answer is b - it is rigid.

The cell wall is defined as the rigid, outermost layer found in plants and also certain bacteria, algae and fungi. It is absent in animal cells.

The plant cell wall is made up  cellulose which is a structural carbohydrate. The cell wall is rigid and thus offers structural support allowing plant such as trees to grow to great heights.

It also helps prevent water loss, helps protect against insects and pathogens and keeps the shape of the plant.

the answer to this question is B because im doing a bilogy test right now as u read this :)

Is human self-interest the driving force behind all environmental problems?Claim:

Evidence:

Reasoning:

Answers

Answer:

Claim: Yes, it is true that human self-interest is the driving force behind all environmental problems.

Evidence:  The Increasing rate of global warming is the best evidence for the claim.

Reasoning: This is so because of human self-interest such as buying a car, burning of fossil fuels in industries, use of plastic, cutting trees, and hunting or poaching result into all environmental problems such as air pollution, deforestation, and endangered wildlife which leads to global warming.

Describe two life zones in the ocean and how organisms are affected by the conditions in each zone.

Answers

There are two main life zones in the ocean. The first one is the coastal zone - the zone near the coast. In this zone, tides expose some part of the see bottom for some part of each day, so some of the organisms in this part can live both under the water and dried out for hours. Also, this part of ocean characterize higher temperature and higher amount of nutrient-rich matter that supports life. Therefore the 90% of all sea lives in the coastal zone. The second zone is the open sea which include the rest of the ocean away from the land. It can be divided in two parts: neretic zone, in which sunlight penetrates the whole water column and oceanic zone, which is characterized by darkness and very high pressure. 

Answer:

There are two main life zones in the ocean. The first one is the coastal zone - the zone near the coast. In this zone, tides expose some part of the see bottom for some part of each day, so some of the organisms in this part can live both under the water and dried out for hours. Also, this part of ocean characterize higher temperature and higher amount of nutrient-rich matter that supports life. Therefore the 90% of all sea lives in the coastal zone. The second zone is the open sea which include the rest of the ocean away from the land. It can be divided in two parts: neretic zone, in which sunlight penetrates the whole water column and oceanic zone, which is characterized by darkness and very high pressure.

Explanation:

Cyanobacteria, unusual worm like life-forms and marine organisms did not exist in Precambrian Time.

Answers

The statement is False.

Precambrian Time spans from about 4.6 billion years ago to about 540 million years ago. Fossils of some bacteria and cyanobacteria are an evidence that the life existed in Precambrian Time. They were the first organism that showed about 3.5 billion years ago. These unicellular organisms lived in the oceans. The first multicellular organisms evolved many years later, around 700 million years ago. Some fossils suggest the presence of some jellyfishes and worm-like forms that lived in the oceans. The land was not settled in the Precambrian time.

Answer:

False

Explanation:

I just took the test
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