Biology College

Define bottleneck effect.


Koyi hai? ✌️​

Answers

Answer 1

Answer:

When disaster strikes, an ecosystem can change very quickly. When an event causes a drastic decrease in a population, it can cause a type of genetic drift called a bottleneck effect.

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Define Bottleneck Effect. Koyi Hai?
Answer 2

Answer:

The bottleneck effect is an extreme example of genetic drift that happens when the size of a population is severely reduced. Events like natural disasters (earthquakes, floods, fires) can decimate a population, killing most individuals and leaving behind a small, random assortment of survivors.

Related Questions

Most Americans/Canada say they hope to die __________.

Answers

i think they hope to die at home

Which of the following is is an example of a lipid?

sugar

oil

chicken

beef

Answers

Answer:

oil

Explanation:

Since oil is a type of fats but in our body we call it lipid

the group of cells that use chemicals to recycle elements in the blood are called

a.muscles
b.glands
c.hormones
d.oxygen
​

Answers

Explanation:

I'm guessing the answer is oxygen.

The oxygen cells are a type of cell that uses chemicals to recycle elements in the blood.

What is oxygen cells?Red blood cells, also known as erythrocytes, transport oxygen to your body's tissues. Your tissues emit carbon dioxide as oxygen is converted into energy. Red blood cells also transport carbon dioxide to your lungs for exhalation. Cells require oxygen to efficiently use glucose in cellular respiration. This is how most organisms obtain energy. When oxygen binds to parts of glucose molecules, water, carbon dioxide, and energy are released. After all, the organism uses the energy to create adenosine triphosphate (ATP). A type of blood cell found in the blood that is produced in the bone marrow.

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What is the resting phase.

Answers

Yah it’s a Go phase because of the cell cycle.

HELP ME

cite a passage in the bible that may help you in your decision​

Answers

"Though he was eating Jorge said enough was enough and left the table." psalms 10:69

Plant and Animal Cells
Which part of the cell is responsible for controlling the activities of the other parts of the cell?
O Nucleus
O Cell Membrane
O Vacuole

Answers

Answer:

Nucleus

The nucleus controls all the activities that happen in the cell

is there vaccine for cancer​

Answers

Answer:

yes

there is vaccines for cancer

Explanation:

plz mark me as brilliant please please please

Labor unions arose in the nineteenth century as increasing numbers of Americans took jobs in factories, mines, and mills in the growing industrial economy.

The Knights of Labor, founded in 1869, was the first major labor organization in the United States. The Knights organized unskilled and skilled workers, campaigned for an eight hour workday, and aspired to form a cooperative society in which laborers owned the industries in which they worked.

The Knights’ membership collapsed following the 1886 Haymarket Square riot in Chicago. By 1886 the American Federation of Labor (AFL), an alliance of skilled workers’ trade unions, was growing.

If a plant died from lack of food provided by photosynthesis, which structure is most likely missing or damaged

Answers

I’m pretty sure it would be the leaf

If a nerve cell stopped functioning, the cell would

Answers

Answer:

stop sending signals to the brain

Explanation:

I need help solving this for my homework please and thank you

Answers

Answer: chromosomal replication

Explanation:

a. Viruses reproduce using a ______ _____.



b. What are the differences between proviruses and viral DNA?



c. Why is the common cold virus so difficult to cure?

Answers

Answer:

Viruses reproduce using a host cell

The differentce between proviruses and viral DNA is A provirus is a virus genome that is integrated into the DNA of a host cell. In the case of bacterial viruses (bacteriophages), proviruses are often referred to as prophages. However, it is important to note that proviruses are distinctly different from prophages and these terms should not be used interchangeably.

Common cold virus is difficult to cure because Unfortunately, antibiotics — medications that treat bacterial infections — cannot treat or cure a common cold. That's because colds aren't caused by bacteria. Some people report that they've had a cold, took antibiotics, and felt better after a few days of the medication.

Explanation:

Wings of birds,wings of insects and patagia of bats are analogous organ​? why

Answers

For example, insects use wings to fly like bats and birds, but the wing structure and embryonic origin is completely different. These are called analogous structures. ... Homologous structures share a similar embryonic origin; analogous organs have a similar function.

differences between stamen and pistil​

Answers

Stamen is composed of anther and filament. The pistil is composed of stigma, style, and ovary. ... The key difference between stamen and pistil is that stamen is the male reproductive organ which produces pollens of angiosperms while pistil is the female reproductive organ which produces ovules of angiosperms.

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4. What is a function of the nucleus of an animal cell?
A. It is the place where energy is produced.
It stores the genetic information, the DNA (chromosomes).
C. It defends the cell from infections.
D. It captures sunlight to produce food.
5. Select a statement that best completes the phrase below. In a plant

Answers

Answer:

A. It is the place where energy is produced.

It stores the genetic information, the DNA (chromosomes).

Explanation:

10. A Rock is a
type of rock that
forms from an
existing rock that is
changed by heat.

Answers

Answer:

yes

Explanation:

that is indeed the definition of a ROCK.

Yes that’s the definition and also the process of erosion

4. Which one of the following leads to the destruction of the ozone layer?
A. release of carbon dioxide from the burning of fossil fuels
B. the release of CFC's found in refrigerants and aerosols
C. the production of acid rain
D. deforestation and habitat loss.

Answers

Answer:

Think it is B

Explanation:

Which of the following structures are found in both plant and animal cells?
O Mitochondria
O Chloroplast
O Cell Wall

Answers

The cellular structures found in both plant cells and animal cells are mitochondria.

Mitochondria are organelles and represent the energy factories of eukaryotic cells because they generate energy by the process of cellular respiration.

Cellular respiration refers to the metabolic processes used by both plant and animal cells in order to generate ATP by using the energy stored in the chemical bonds of foods and oxygen.

Cellular respiration has three main stages: glycolysis, the Krebs cycle and oxidative phosphorylation.

The Krebs cycle and oxidative phosphorylation occur in the mitochondria, whereas glycolysis occurs in the cytoplasm.

In conclusion, the cellular structures found in both plant cells and animal cells are mitochondria.

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Why does an increasing population cause
increased waste production?
A. decreased food production
B, each new person creates more waste
C. each new person creates less waste
D. decreased resource use

Answers

B. Each new person creates more waste

One important function of bones is to produce ……………….

Answers

Answer:

Red blooded cell, White blooded cell and platelets

Leukocyte, erythrocytes , platelets

4. Murphy ends her talk by saying, "It's not about the robots. It's about the data."
What does she mean by this? How is this pertinent to severe weather disasters?

Answers

Answer:

At the end of Murphy's talk she says it's not about the robots it's about the data meaning it is not about the robots but the data collected by the robots . This is relevant to natural disasters because robots can collect data more efficiently and with higher resolution better than we could without them. Also the robots collect this data in just seven hours when it normally takes up to two to three days.

Explanation:

I had the same question in my high school class and got 100%

Here is a diagram of the digestive system. Where do you think lactase would be most effective? Explain. Be sure to consider the amount of time lactose/food would spend in each area.

Answers

Lactase will most likely be found in the small intestine and food spends the largest time there.

The digestive system refers to all the structures that are responsible for the breakdown of food in the body. In each part of the digestive system, enzymes act on the food particles to enable certain conversions.

The enzyme lactase in involved in the digestion of milk and diary products. The enzyme has an optimum pH of about 6 hence it works in an acidic environment. Lactase is found in the small intestine.

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Which process in the cell cycle could lead to a cancerous cell?

Answers

Answer:

Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor

Explanation:

Which adaptation is common to animals that live in temperate grasslands?
structures to dig burrows
keen eyesight to help them see in the evening
a thick insulating layer of fat
large ears to regulate body temperature

Answers

Answer:

This is 100% right.

Explanation:

Temperate grasslands are characterized by vast expanses of open grasslands with few trees and shrubs, so structures to dig burrows are a common adaptation for animals that live in temperate grasslands, as is preset in the first option.

What are temperate grasslands?

Temperate grasslands are biomes characterized by vast expanses of open grasslands with few trees or shrubs. These ecosystems experience a wide range of temperature fluctuations between seasons, with hot summers and cold winters. As a result, animals that live in temperate grasslands have evolved adaptations that enable them to survive in this challenging environment. One of the most common adaptations of grassland animals is the ability to dig burrows. Burrows provide shelter and protection from predators, as well as a stable microclimate for animals to live in.

Hence, structures to dig burrows are a common adaptation for animals that live in temperate grasslands, as is present in the first option.

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please asnwer A and B

A. How is the blood in the pulmonary arteries different from blood in other arteries?


B. How is the blood in the pulmonary veins different from blood in other veins?

Answers

Pulmonary artery carry deoxygenated blood while are there arteries carry oxygenated blood.

pulmonary vein carries oxygenated blood while the other veins carry deoxygenated blood

NEED ANSWER! WILL BRAINLIST!


•During the mining process, which step immediately follows separating the mineral from the waste rock?


A. refining

B. distribution

C. crushing and milling

D. drilling and blasting

Answers

Answer:

C

Explanation:

Answer to this please.

Answers

I believe it is the first option

.
What do flagella help a Eubacteria do?

Answers

Flagellum is primarily a motility organelle that enables
movement and chemotaxis. Bacteria can have one
flagellum or several, and they can be either polar (one or
several flagella at one spot) or peritrichous (several
flagella all over the bacterium).

Answer:

flagella helps them Move.

Explanation:

Which scenario describes an interaction between two of Earth’s spheres?

Water flows from a stream to a lake.
Gravity moves rocks to another location.
Lions use energy to catch other animals for food.
Bears dig big holes in the ground to protect their young.

Answers

#2: Gravity moves rocks to another location

Answer:

The scenario that describes an interaction between two of Earth's spheres is "bears dig big holes in the ground to protect their young".

Explanation:

The Earth spheres include the biosphere, the hydrosphere, the geosphere, and the atmosphere. In this context, there is an interaction between two spheres: the biosphere and the geosphere, when a bear digs holes in the ground because a living organism that is part of the biosphere is modifying the structure and shape of superficial soil, which is part of the geosphere.

g The hormone __________ induces is lipolysis, whereas the hormone __________ inhibits the process. insulin; norepinephrine glucagon; insulin insulin; glucagon epinephrine; adrenocorticotropic hormone epinephrine; glucagon

Answers

1)noradrenaline
2) adenosine

I need help please ??!!!!!

Answers

Answer:

1: false

2: true

3: true

Explanation:

sorry if they wrong its on me if u use them tho

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