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3 years ago

Questions 10-15 ? Please and thankyou.

Biology

1 answer:

icang [17]3 years ago

6 0

Answer:

10. Unakwik Inllet 4; Esther Passage 2, 6; Wells Bay 3, 5, 7, 8

11. Decrease as they are attacked by urchin

12. Increase, as otters eat urchin, reducing their population

13. Photosynthesis and chemosynthesis

14. Carbon, hydrogen, oxygen, and nitrogen.

15. A critical species with large effects on the ecosystem

Explanation:

10. In gel electrophoresis, smaller fragments of DNA travel faster through the gel. The DNA ladder on the left acts as a scale for how far each band size would have travelled. You can see that bands corresponding to the size 610 are representative of Wells Bay. Lanes with this size band are 3, 5, 7 and 8. Bands corresponding to size 610 are in lanes 2 and 6, and the presence of both (indicating Unakwik Inllet) corresponds to lane 4

11. Sea urchins eat kelp forests for energy. Therefore, if there are more sea urchins, they will eat even more kelp, and reduce the numbers. Sea urchins in high numbers can even cause what is called an urchin barren, where they have completely destroyed the kelp forest population.

12. The balance of kelp and sea urchin is also affected by otters. Otters eat sea urchin, therefore keeping their population in check. Therefore, if there are more otters, there are less sea urchin to eat the kelp forest, and the population has a chance to increase.

13. The two processes by which producers can generate energy for cellular processes are photosynthesis and chemosynthesis. In photosynthesis (done by green plants and some cyanobacteria) uses energy from the sun, carbon dioxide, and water, to synthesise sugar which can be broken down for energy. Chemosynthesis does not rely on sunlight for energy, instead using the oxidation of inorganic compounds (i.e. chemicals) to generate energy for food production

14. The elements crucial for making proteins are those that are present in all amino acids. These are carbon, hydrogen, nitrogen, and oxygen. Proteins are created by linking up chains of amino acids, which are joined together with a peptide bond (a link between an amino group (nitrogen and hydrogen) and a carboxyl group (carbon, oxygen and hydrogen)

15. A keystone species has disproportionately large effects on the ecosystem of which it is a part. That is, it is an important part of the network, and is holding a delicate balance. E.g. predator keystone species might keep a population of prey in check. Without the keystone species, they prey would overgrow and cause an imbalance in the rest of the ecosystem for example by overgrazing. A good example is the tiger shark. Without the tiger shark, sea turtles (a common food source of the tiger shark) go unchecked, often over grazing and wiping out the plant population in the seabed.

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Why is the ability to bioluminesce beneficial? signals may be sent out to communicate an interest in mating it can camouflage th

alukav5142 [94]

Answer:

The correct answer is - All of the above

Explanation:

Food is produced at every part of the earth as it may be found even in the parts that are darkest at night or at the part of ocean. Communication between mates can be done by signals that may sent to show interest in mating, Camouflage is the way to escape or hide by use of the light that may momentarily distract predators as it can camouflage the underbelly of the fish by lighting it up the same color of as the sea surface to make it invisible.

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3 years ago

Small amounts of hormones have large effects on an organism's physiology because the signals are amplified between glands and ti

laila [671]

Answer: True,

Small amounts of hormones have large effects on an organism because the signals are amplified between glands and tissues due to the second messenger systems.

explanation:

Second messemgers are the intracellular molecules which are activated by the extracellular molecules. Second messengers intracellulary triggers physiological changes such as proliferation differentiation migration etc.

When hormones are released they bind to specific receptors such as G-coupled recptors,tyrosine recpetor which when activated further activates second messengers such as cAMP and STAT respectively.

These second messengers amplify the hormone secretion and production by phosphorylation and increasing transcription.

Hence this is true that second messnegers amplify the hormones and their physiological results.

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3 years ago

Wht would be the magnification of a specimen viewed with a compound light microscope the has an objective power of 10x and ocula

Whitepunk [10]

5 x 10 = 50

so magnification power of x50

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3 years ago

I need this answered like- as fast as possible. I'm not even sure how anyone can do this, but if you somehow can do this in unde

kati45 [8]

Answer:

The Pacific Ocean (Marine ecosystem) is filled with all types of aquatic animals and crazy things that they have to do to survive. The pacific ocean is home to many species of fish, whales, sharks, dolphins, starfish, squid and many more. To survive in their environment they need to eat each other before they get the chance to be the ones that get eaten. In other words, they need to be the predators before they get the chance to become someone else's prey. This will naturally occur in the biome of the pacific ocean with the food webs and animals in this marine ecosystem.

Some of the main features that provide energy and the ability to live for all organisms is the sun, the salt water that the aquatic animals live in, the sand that gives prey a place to hide and disguise, coral reefs provide home for tiny fish, and trash has been a huge part of the animals living style. The trash gets thrown into the ocean and gets wrapped around the sea animals or even gets eaten by them. This could also cause the biotic factors of the pacific ocean to shift the way they eat and endanger their living environments.

Food webs are the simple but also complicated way that animals hunt and feed themselves. One of the main chains that are most common in the pacific ocean is between sharks, tuna fish, shrimp, seaweed, and the sun. In this food chain the sun starts by shining its rays down on the seaweed (Producer) so that the seaweed can absorb the sun's energy during photosynthesis, the seaweed gets eaten by the shrimp (omnivores) who are also some of the decomposers of the pacific ocean. Tuna fish (carnivores)then eat the shrimp to gain more energy to survive, and to end this food web, the tuna fish gets eaten by larger sharks(carnivores). But the predators only get 10% of the energy that could have possibly been theirs. Not just in this single food chain, but in all food webs the animals have to eat as much as they can to gather as much energy as possible. Many living things compete for their food and territory in the pacific ocean biome. Some of the types of interactions that animals have in the pacific ocean is the competition between blue whales for food. The Blue whales' main source of food is a shrimp-like sea creature called krill. To compete for the krill, the size of the whale is always most intimidating. If a huge blue whale and a smaller blue whale were trying to eat a swarm of krill, the smaller whale would back off to avoid problems and let the bigger whale take it. Another example of interactions between animals would be the clown fish and sea anemone. The sea anemone gives the clown fish a home to live in and the clown fish protects the sea anemone from other fish that would try and eat it. The pacific ocean biome has many examples of mating interactions as well. The aquatic animals mate and reproduce more of its species in the varying temperatures of the pacific ocean. One of the mating relationships that happen in the pacific is between the Giant Pacific Octopus. The male octopus finds a mate and transfers a packet of sperm into the female's mantle. The female then carries around the packet until she can fertilize the eggs. After the female lays her eggs, she stops eating and dies away by the time her eggs hatch. And sometimes the female will eat her mate, or the male will die as well after she gives birth.

In the end, the pacific ocean biome is very large as it contains almost ⅓ of the amount of surface on earth. And since it is so huge, it contains many smaller ecosystems such as kelp forests and coral reefs. It also contains ridges and trenches formed by volcanoes under the earth's surface. It is also the home to the Great Barrier reef off of Australia’s coast. And there is a large amount of debris and pollution that harms things in the pacific ocean biome. In conclusion the biome of the Pacific Ocean has many animal relationships and different ways of survival.

Explanation:

This is my essay from last year and even i struggled with it...but im smart, lmk if u need any more help

6 0

3 years ago

Which best explains the surface tension of water?

ExtremeBDS [4]

B.) Cohesion

Explanation:

The best term that fits the description of the term surface tension of water is cohesion.

Cohesion is the intermolecular forces that holds together the particles of liquids and solids.

Surface tension is a phenomenon in liquids that causes them to come together more and shrink on the surface.
Surface tension is made possible by cohesive forces between water- water molecules.
Adhesion is between different molecules like water and glass.
In capillary action, a liquid is able to rise up in a column
Sublimation is a phase change from solid to gas.

learn more:

Capillary action brainly.com/question/1799421

#learnwithBrainly

3 0

3 years ago