Biology is a branch of science that studies the nature of life from the smallest parts of living things to the largest plants and animals. Ask and answer questions about the living world and its wonderful inhabitants in this category!

218,019 Questions

What are the three Domains?

I'm flirting with you guys \ boys.


What word describes a group of similar cells working together?



Do humans really need to wear shoes?

Turns out we don’t! Well, other than to protect from potentially harmful debris or hazardous weather conditions, that is.

Our feet don’t need a soft cushion between us and the ground, and when our shoes provide that barrier, we tend to walk harder, negating a lot of that softening effect in a primal effort to feel the ground beneath us. Barefoot, your natural stride is a bit shorter, meaning instead of the edge of your heel hitting the pavement first, the impact moves closer to the middle of your foot, softening the blow. And within their rubber and fabric prisons, your feet can’t be as flexible, meaning you’re missing out on a powerful push off from your toes with each step. As proof of this, researchers at the University of the Witwatersrand found that humans had healthier feet before the invention of shoes.

As a personal anecdote, I actually went to college with a guy who walked around campus barefoot all the time. I remember seeing him around once after it had rained—the sidewalk was all wet and kind of gritty, and his bare feet were getting all of that up close and personal. Gross! But I guess he was on to something after all.


What does DNA stand for?

DNA is an acronym that stands for Deoxyribonucleic acid. It is found in the nucleus of a cell. It is the genetic code for all living life forms.

Skeletal System

What are examples of hinge joints?

The most typical hinge joints is the elbow, which attaches the Humerus to the Radius and Ulna.

Some say the interphalangeal joints between the bones in your fingers are hinge joints; others call them condyloid joints

Hinge joints that are a bit atypical, as they allow some limited rotation include the:

  • knee, or tibiofemoral joint. This is the largest hinge joint. The patellofemoral joint, between the kneecap and thighbone, is not a hinge joint.. The knee is sometimes considered a modified hinge joint or a pivotal hinge joint.

  • The Ankle is not a good example, its a saddle joint.

The jaw (the temperomandibular joint) is sometimes called a hinge joint, but it has a gliding component as well and has more motion than a typical hinge joint.

Hinge joints are synovial joints that only move on one plane (ex you can bring your arm up at your elbow but you can bend it sideways without rotating your shoulder.

Generally, a hinge joint is found between two bones that move in two opposite directions (flexion and extension), as opposed to in many directions. For comparison, the hip joint and shoulder are not hinge joints, since they move the adjoining limb in several directions.


What is the biological and medical term meaning maintenance of a stable internal environment?

Homeostasis is basically biological term also used in medical field . It is defined as maintenance of internal conditions constant or nearly constant . It includes three basic processes .
1 : Osmoregulation. It is keeping balance of water and electrolytes in body which occurs with help of kidneys which are major osmoregulatory organs . If a person consumes more salts , it results in increased thirst which , increased water usage and production and elimination of extra salt to maintain osmotic pressure of body .
2 : Thermoregulation
. It is controlling body temperature by sweat , perspiration , thermogenesis , basking , vasodilation , vasoconstriction and other processes .
3 : Excretion . it is elimination of wastes via excrtory organs as urinary system .

Social Sciences

What is the movement of organisms from one place to another?

Lentiviruses are very efficient at delivering genetic materials to both dividing and non-dividing cells. According to whether proviral DNA is formed in transduced cells, lentiviruses can be further divided into two groups: integrating lentivirus (ILV) and integrase-deficient lentivirus (IDLV). ILV is first developed and applied in scientific research and IDLV is constructed later through genetic modification.


Which science is the most complex chemistry or biology or physics?

biology because it tells us what is important to humans and biology is more easier than physics and chemistry

Waste and Recycling

An organism that decomposes decaying organisms leaf litter and other types of dead organic matter is called a?

Such organisms are called decomposers, which include micro fungi and bacteria .

They decompose dead and decaying organic matter.

An organism that decomposes decaying organisms leaf litter and other types of dead organic matter is called a saprobe, saprotroph ,saprophytic .


What are some benefits of DNA data banks?

Hepatocytes cultured in a three-dimensional environment using bioreactors, hanging drop methods, collagen sandwich cultures, micro-space cultures, collagen and matrigel cultures, and other synthetic biomaterials have been shown to be tissue-specific and possess many hallmarks of in vivo epithelial cells.

Dolphins and Porpoises
Zoology or Animal Biology

What do Humans and dolphins have in common?

Both are mammals, so both have mammary glands, and hair on their skin, and they have 7 cervical vertebrae as humans do.

They are touted to be one of the only 3 animals that mate for pleasure (humans, dolphins, bonobos), and socially with many partners as many humans do. They also mate face to face unlike other animals. Dolphins do give birth to live young, and as mammals, they nurse their young with breast milk.

They have very high communication skills amongst themselves. They are very social and prefer to live in pods rather than alone. Females will create a communal/ family creche for the young, so that others may go to hunt and feed. They show emotions of happines and sadness. They mourn the death of a member of the pod, especially an offspring. They also display working in teams to achieve a common goal. When hunting, they create tight balls of sardines by circling and herding them, and then diving straight through them to feed. Pods are very protective of each other and sometimes show compassion, and may adopt a young out of another pod if it has been left behind or lost its mother.

Additionally, they have mirror neurons, being able to pass the mirror test and detect themselves in a mirror. Mirror neurons may also indicate empathy.

In short, they display more "human" emotions and behaviors than any other non-primate mammal.


What is the GC content of a human genome?


Human Anatomy and Physiology

Does blood carry starch around the body?

No, but glucose is carried by the blood after digestion and there's no starch found in blood usually.


Why does absorption of a membrane increase with temperature?

This is a very simple question with rather a complication set of answers. Movement of some molecules or substances across a membrane only increases between the temperatures of 1 to 37 degrees Celsius (in most organism/cellular systems). At temp. greater than 37 Celsius the membrane proteins involved in transport become denatured. One has to consider the main processes of movement of substances across a membrane i.e ranging from passive diffusion and osmosis and including active transport systems and end/exocytosis etc.

Fossil Fuels

What is the solute and solvent in gasoline?

I'm not sure what you mean, commercial gasoline is a blend of linear and aromatic hydrocarbons averaging about 8 carbon atoms per molecule with various additives for various purposes (e.g. keep engine clean, reduce pollutants, stabilize mixture, improve starting in cold weather).

Gasoline is a solvent, but if you was a solvent for cleaning parts there are far safer ones that work as well.

Word Games

What are the two components of return?

There are two components of return. These are followings: 1. Yield 2. Capital Gain

Botany or Plant Biology

What is the main difference between plant and animal cells?

  1. Plants cells have a cell wall over the cell membrane,whereas,animals cells lack cell wall.
  2. In plant cells, there is a single large vacuole present in the middle, whereas, in animals cell,there are more than one vacuoles.
  3. Plant cells possess plastids, but, animal cells don't.
  4. Animal cells have centrioles, whereas, plant cells don't.
  5. Plant cells are more square shaped, animal cells are more round
  6. Plant cells have chlorophyll for Photosynthesis (make their own food), and animal cells don't

Is aluminum biotic or abiotic factor?


Laboratory Testing

Name any 5 precautionary measures inside the laboratory?

1. Familiarize your self with the laboratory.

2. Use common sense.

3. Use a safety gear when necessary - particularly eye protection.

4. Follow the instructor's or teacher's directions.

5. Practice correct or proper procedure in handling liquids.

6. Never smell a liquid reagent directly .

7. Never pour a reagent back into main bottle .

8. Don't eat or drink in the lab.

9. Use fuming hood while working with volatile liquids .


What sugar is found in DNA and RNA?

Ribose is found in RNA

Deoxyribose is found in DNA

Noble Gases

How are gases unique?

Gases can be compressed with little force used. Solids and liquids are virtually incompressible. If you were to set up an apparatus that allowed you to increase the pressure inside a vessel, it would be noted that the volume of the liquid and the solid would change very little, but the volume of the gas would decrease. This is due to the intermolecular forces between the individual molecules.

Cell Biology (cytology)

What do glycolipids do?

Glycolipids may be involved in cells signalling that they're ''self''; to allow the immune system to recognise them.

They could also be hormone receptors

Glycolipids are a carbohydrate with lipids attached. Their main function is to provide energy and to serve as markers for cellular recognition.

Glycolipids are found in cell membrane animals tissues and nerve cells, composed of lipids and carbohydrates such as glucose or galactose as in cerebrosides or combination with sialic acids in gangliosides. It provide energy as well as cell recognition. In cell membrane it is bonding with water molecules.

and I was there whn john died

Auto Accidents

What are the five classification of accidents?

1. physical

2. mental

3. by vehicle

4. physical activity

5. bike accident

6 ; burn and scalds

7 : radiations

etc .


What is test tube skin?

Short Answer is: It is skin in / and from / a test tube. What else ... would you need: Q'n.

Periodic Table
Scientific Method

What is Clinistix and albustix used for?

Clinistix is a commercially available product for testing for of glucose in urine. It turns purple if glucose is present. Albustix is a commercially available product for testing for the presence protein in urine.


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