Which of these examples demonstrates homeostasis? A. a bird flies south for the winter and flies back north in the spring.

B.
An amoeba takes in food and digests it.

C.
A cat runs away when it hears a noise.

D.
A person's body increases blood flow to its cold feet.

Answers

Answer 1
Answer: D)  A person's body increases blood flow to its cold feet
Homeostasis is when your body keeps a relatively stable internal temperature in order to stay healthy
Answer 2
Answer: D) person's body increases blood flow to it's cold feet

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Which type of population growth is shown in this graph? Population of Bacteria mc012-1.jpg

Answers

Answer : Binary Fission which grows exponentially.

Explanation : Binary fission actually means binary - consisting two and fission - cleavage into halves. It is one of the modes of asexual reproduction.

This  type of fission is majorly observed in the asexual reproduction in prokaryotes. It is rarely seen in some some single-celled Eukaryotes like Amoeba and Paramecium.

Also, In binary fission there is DNA replication and segregation which occurs simultaneously.

This increases the graph exponentially as the growth gets faster and faster with the passing period of time.

A reference image of binary fission is attached in the answer.

Exponential growth is density-independent, meaning populations can grow with no limits since resources are always available. The correct option is Exponential growth.

What is exponential growth?

Exponential growth is one type of populations' growth models.

Populations exhibiting exponential growthmodels experience a rapid increase, which is proportional to their size and depends on the individual's reproduction rate.

A population growing at a constant exponential rate gains individuals faster as the population increases in size.

Density-independence characterizes exponential growth.

Populations that experience this growth live in environments with unlimited resource availability, so competition for food or other resources does not influence population growth.

There is no density-dependence effect nor competition for resources. Natality and mortality rates are not affected by density. The growth per capita rate remains constant, and it is proportional to the population size.

Exponential growth is hardly seen in nature due to its characteristics.

Only a few species can experience exponential growth, such as bacterias.

The correct option is Exponential growth.

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Complete question

Which type of population growth is shown in this graph? Population of Bacteria

  • exponential
  • linear
  • logistic
  • limite

Describe how plants and animal cells obtain their energy?

Answers

Food provides energy to animal cells, whereas sunshine provides energy to plant cells. Chemicalenergy, which is the energy held in the bonds that connect the atoms of every molecule, is used by all cells. Cells must be able to release the chemical energy in the connections in order to continue to function.

What is a cell?

The smallest unit in biology that can sustain life on its own and makes up all living things as well as the body's tissues.

After using a very early microscope to examine a piece of cork, Robert Hooke proposed the name "cell" in 1665, derived from the Latin cella, which means "storeroom or chamber."

It is also claimed that he believed the rectangular spaces resembled some monasticcells.

Animal cells get their energy from food, but plant cells get their energy from sunlight. All cells employ chemicalenergy, which is the energy stored in the bonds that bind the atoms of every molecule.

To keep working, cells need to be able to discharge the chemical energy stored in their connections.

Thus, this way, plants and animal cells obtain their energy.

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Plant cells obtain their energy by making their own food  through the process of photosynthesis. Photosynthesis is a process by which carbon dioxide , water and light energy are utilized by plants to make energy-rich carbohydrates such as glucose. Plants store up the glucose as starch in their tissues.  When plant cells needs energy, they simply take  glucose molecules from their store of starch and use it in cellular respiration to produce ATP, the form of energy that the cell uses to function.

Animals on the other hand do not make their own food but ingest ready made food and  break it down  into its simplest units through the process of digestion. Complex carbohydrates are broken down to glucose units. Glucose is directly taken in by the animal  cells where it is used in cellular respiration to produce ATP ,which fuels the cell activities.

The process of converting the genetic message from DNA into __________ is called transcription.

Answers

The process of converting the genetic message from DNA into RNA is called transcription.

Transcription is the phase of gene expression in which a certain part of DNA is copied into RNA. Transcription is carried out by the enzyme RNA polymerase which joins nucleotides to produce an RNA strand and uses a DNA strand as a template. The three stages involved in transcription are initiation, elongation, and termination.


Dna transcription is the process of converting the genetic message dna to rna. hope this helps

Why are plants and animals able to survive in the tundra?

Answers

The Arctic and the summits of mountains are home to tundra ecosystems, which are characterized by their lack of trees and harsh climates with little rainfall.

What is tundra region?

Snow covers tundra lands for the majority of the year, but summer provides bursts of wildflowers.

The small plants of the tundra employ dormant strategies, producing seeds only occasionally, turning with the sun to absorb energy, and growing protective coverings.

The ability to build subterranean insulated tunnels as well as heavy winter coats, seasonal color-changing camouflage, and efficient body shapes have all been developed by animals that live in the Arctic tundra.

Therefore, The Arctic and the summits of mountains are home to tundra ecosystems, which are characterized by their lack of trees and harsh climates with little rainfall.

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Answer: Plants and animals are able to survive in the tundra because they have adaptations that allow them to thrive in the harsh conditions of the Arctic and sub-Arctic regions. These adaptations include thick fur or feathers to insulate against the cold, small body size to minimize heat loss, and the ability to store food and nutrients during the short growing season. Additionally, many tundra plants have shallow roots that can absorb nutrients quickly when they are available, and some have developed the ability to photosynthesize at low temperatures and with minimal sunlight.

What is copulatory organ designed to deliver sperm into the female body sociocultural dimensions​

Answers

Answer:

your pp

Explanation:

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Which of these is always part of using the scientific method?

Answers

Since you provide no options, here are the usual parts of scientific method :

- Idea / question which answer you want to find out
- Research , collecting all kinds of data
- Hypothesis , an explanation that is made at the starting point, before the experiment
- Experiment , to find out whether your hypothesis is right
- Analyze the data that you got from the experiment
- Conclusion, your final judgement based on the result of your experiment