BIOLOGY HIGH SCHOOL

Explain why multicellular organisms require a ventilation system?? include reasons on
surface area to volume ratio
cells depp within the body
and number of cells

Answers

Answer 1
Answer: Ventilation maintains a steep concentration gradient, blood at the exchange surface usually has lower O2 and higher CO2 content than the air (of for fish, the water) at the exchange surface. This is what allows for diffusion of O2 into the blood and CO2 out of the blood. Multicellular organisms have a greater number of cells so will have a higher energy demand than single cellular organisms, this demand can only be met by allowing the cells to respire, a ventilation system brings oxygen molecules which are a raw product of respiration into the hemoglobin of the blood to be transported to tissues. As surface area : volume ratio is very low so if there was no ventilation system and the organism instead relied on exchange of materials through the exposed skin it would be very difficult to met the high energy demand as less O2 and CO2 would be able to be exchanged.
Answer 2
Answer:

In multicellular organisms, the division of labor provided by these bodies grouped into specialized devices imposes a number of constraints.

One of the constraints is that it is necessary for all cells in the body to be well supplied with both nutrients and oxygen. The transition to multicellularity requires the establishment of a circulatory system and a respiratory system for the supply and purification systems for the disposal of waste.

The amount of oxygen required to breathe depends on:

Ratio surface / volume plus it is small and the intake by the respiratory system must be important.

The depth of the cells, which evolves proportionally with the oxygen supply required.

The number of cells that also evolves proportionally with the oxygen supply required.

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Which statement about enzymes is true

Answers

Enzymes don't take part in a reaction but just speeds up a reaction

Answer:

Explanation:

Enzymes don't take part in a reaction but just speeds up a reaction

How do the nervous m, endocrine, and reproductibe system work together

Answers

Reproductive affects your hormones , the hypothalamus controls your piturary gland and other ENDOCRINE glands nervous system controls your nerve impulses and senses

Explain how organisms changes within an environment affect their survival. Specifically discuss the effects of a gene mutation for color in beetles.

Answers

Animals gradually adapt to changes within their environment over time. This gives them a better chance of surviving rather than going extinct because of the change. Say there is a gene mutation affecting color within a population of beetles in a rain-forest. All of the beetles used to be red, but now a few of them have experienced a gene mutation and are green. Because they live in a rain-forest, it is likely that the green beetles would blend in with their surroundings far better than the original red beetles, and those red beetles would be wiped out by predators because they are easier to spot. The green beetles would live on and flourish, and their population would increase. Soon there would be few or none red beetles, and many green beetles.

Answer:

gene mutations help them camaflauge for survival. when change happens in an enviornment many things within the beetles mutation will change to adapt for the enviornment around them.

those genes will be passed down to the next generation survival of the fitest

Explanation:

edge2020

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What term includes all the biotic and abiotic elements in an area? A)ecosystem
b. population
c. biome
d. organ

Answers

Answer:

The correct answer would be A) ecosystem.

Ecosystem refers to the community made up of all the living organisms (biotic component), their physical environment and all their interactions in a given space.

The biotic and abiotic components of the ecosystem are linked with the help of energy flows and nutrient cycles.
A)ecosystem - this is true! an ecosystem includes both living and non-living objects in a system!
b. population - this is only biotic: a population is a group of organisms, and organisms are biotic
c. biome - this is also only biotic: it's a large community of plants and animals over a large area
d. organ- this would be only biotic (parts of living organism)

Which of the following is not a function of lipids?A. Heat insulation
B. Energy source
C. Cell structure support
D. Organ protection

Answers

Answer:

D

Explanation:

An ecosystem with wet soil, willow trees, and orchids is likely a. a marsh.
c. a forest.
b. a swamp.
d. a pond.

Answers

a swamp wuld be the correct answer to your question
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