Ask Questions of Your Own
or Answer Other's Questions

What is the importance of bivalent formation? 
The question has been taken from meiosis. Bivalent formation plays role in crossing over which is responsible for genetic variations hence responsible …

How does semi-quantitative RT-PCR measure gene expression? 
By comparing a housekeeping (reference) gene to a target gene of interest on a gel, it is possible to measure gene expression. How is this possible? …

The two codons for cysteine UGU and UGC can both be translated by a single tRNA. Write the 5' to 3' sequence of the coding strand (sense) of DNA that encodes the anticodon of this tRNA. 
The two codons for cysteine UGU and UGC can both be translayed by a single tRNA. Write the 5' to 3' sequence of the coding strand (sense) of DNA that encodes …

What is the importence of inorganic phosphate in TCA? 
Study Biochemistry Review - Questions and Answers for Biology Exams .

Why is it not diffusion if you stir the food coloring in water? 
What is it called?

Descripe and give an example of both active and passive transport. Be sure to include distinguishing characteristics for active and passive transport. 
Study Cell Membrane .

How many types of elements together make up xylem? Describe their functions. 
Study Plant Tissues .

During Elisa test and after applying my samples, I have stored them for 24 h in room tempreture in stead of +4 C . Does this mistake affect my results ? 
During Elisa test and after applying my samples, I have stored them for 24h in room temperature in stead of +4 C. Does this mistake affect my results?

The basic difference between plants and animals is their mode of nutrition. List and describe in detail two features related to nutrition. 
Read Nutrition Vitamins - Easily Explained .

Mary decides to receive GnRH shots. Unknown to Mary, she had a small benign tumor in her ovary that over produced progesterone. 
Explain how this may or may not impact the effectiveness of the GnRH shots(include the basic function of GnrH and what it could do if used as an infertility …

Describe how Francesco Redi contributed to the understanding of the origin of life. 
Study Origin of Life .

A group of plants which survives in most places is (name it )? 
Study Plants .

What is the role of multigene families in the genome of multicellular eukaryotes? 
I have no idea what the answer is. Study Evolution .

One chromosomal abnormality that is usually fatal is 
A) the addition of an extra autosomal chromosome. B) a change in the number of sex chromosomes. C) the exchange of material between homologous chromosomes. …

Biology question on cells and how our bodys operate? 
1. Why are large organisms (like horses, humans, etc.) made of small cells instead of a few large ones? Why is the small size important? 2.The brain …

What are dictyosomes? 
I did some research and found out it is the Golgi apparatus in plants.Is it correct?I just wanted to be Sure...Thank u!!:) Here some more info: http://en.wikipedia.org …

A protein-digesting enzyme mixes with cholesterol in the digestive tract. What effect does the enzyme have on the cholesterol? 
A. Breaks the cholesterol into amino acids B. Breaks the cholesteol into simple sugars C. Converts the cholesterol to energy D. NO effect

How many gametes can be formed from these allelic pairs AaBbCc (and enumerate them)? 
Click on post comments to answer. Read our review pages on Genetics.

What is the relationship between the sun, seasons and the geographic lines indicating the Tropics, the equator, the arctic and Antarctic circles? 
Click on post comments to answer. For studying more than 1800 Bioloqy questions correctly answered download our ebook .

What happens at the alveoli of each lung? 
The heart...

Which of the following is not true of diffusion? 
A. application of pressure increases the rate of diffusion b. Higher temperature results in a faster rate of diffusion c. The solubility of the solute …

WHY ARE WRESTLERS AND SPORTS MEN RECOMMENDED TO HAVE EGG,MEAT AND FISH AS A PART OF THEIR DIET? 
Do they?

Why all seeds of a papaya fruit do not grow into plants? 
Why all seeds of papaya fruit don`t grow into plants?

What is the menopause? 
I want to know what it is and what hormones are involved etc. Symptoms? Treatments? Why it happens?

Describe what happens to the original spot of stimulated plant pigment. 
It changes to many shades?

What is the zone of inhibition of disinfectants or antibacterial products?  
for the following products: 1.sulight dish washing liquid 2.harpic 3.jeyes 4.duck(cleaning product) or if you have more its ok Thanks.

Which has more members, arthropoda's, insecta's arachnida's or crustaceans? 
Click on post comments to answer.

The actual pressure with which water enters into cell is called? 
The options are: (a)DPD (b)OP (C)WP (d)Diffusion Click on post comments to answer.

After performing a monohybrid cross, it is important to analyze the results with a Punnett square. What does each box in a Punnet square represent? 
Click on post comments to answer.

What is the internal structure of stem? 
Click on post comments to answer.

Pluricellular stands for what? 
Click on post comments to answer.

How is regulation of blood pressure achieved? 
Click on post comments to answer.

How is the ATP yield from anaerobic respiration derived? 
Oxidative phosphorylation? Reduction of pyruvic acid? Derived from glycolysis? Click on post comments to answer.

Which biological chemical is important in heredity of traits? 
Click on post comments to answer.

What are examples of the diversity of structures in protozoans? 
Click on post comments to answer.

Potatoes store food in which tissue? 
Click on post comments to answers.

What do organisms need to be of the same species? 
the choices are: -they can interbreed -they share genetic similarities -they are the same color -they fall under the same genus Click on post …

Where is energy from CO2 turned into sugars? 
Click on post comment to answer.

Why do mitochondria have their own DNA? 
Mitochondria.

The major stuctural difference between chromatin and chromosomes are? 
What would be the answer to this question?

Would the five basic taste sensations be sufficient to distinguish all the different flavors of food? 
The Five basic taste sensations being: sweet, sour, bitter, salty, and savory (hearty). Thanks. Ivana

Where do Mycorrhizal fungi grow? 
Biology question.

Is endocytosis/pinocytosis/exocytosis a form of diffusion or osmosis or three different processes not related to either? 
I thought that endo/pino/exocytosis were three different processes unrelated to osmosis or diffusion. Right?

In which kind of cross would you expect to find a phenotypic ratio of 9:3:3:1 among the F2 offspring? 
Dihybrid cross.

What effects can solute concentration have on enzyme function? 
Enzyme.

Which element is obtained from water and utilised during photosynthesis to produce glucose? 
An element used in order to make glucose through photosynthesis with an element ion water...

Which phase of cellular respiration depends upon cytochromes? 
Pls, answer.

In a chloroplast, the stacks of membranous sacs are called? 
Grana is part of the thykaloid. Each stack of thykaloid (the individual disks) are called grana. Cristae are those twisted, curving-shaped inner membranes …

Which part of the water cycle is a biological process? 
A. Precipitaion B. Condensation C. Runoff D. Transpiration

What are the roles of platyhelminthes in fresh water? 
What do platyhelminthes do in fresh water habitat?

The plasma membrane is semi-permeable and acts as what? 
Barrier to prevent the leak of substance from cell; as a barrier to prevent substance from extracellulae environment.

What are 3 types of wastes excreted by human beings? 
...

Why dont bacilli form tetrads or clusters? 
Why?

What are the steps of breaking down ATP? 
I need to know this for my test tomorrow. Read: Cell Respiration .

Cells are microscopic. Why are they small? 
Pls, answer.

Does an aquatic plant conduct photosynthesis in the light or dark or both? 
Photosynthesis.

Does an aquatic plant conduct cell respiration in light dark or both? 
Cell respiration.

A substance made of protein and DNA (in eukaryotes) aka uncoiled DNA... 
I need help with this question.

How protein structure changes can result in sickle cell anemia? 
...

What is the first energy source for humans? 
I need this asap.

To which kingdom does the cockroach belong? 
Which kingdom?

While eating beans, what reactions must occur for the constituents to reach blood? 
Click on post comments to answer.

The process that divides the cytoplasm at the end of a cell divison is known as? 
Read our review on Cell Division.

What type of asexual reproduction is common to paramecium and other protists? 
...

What type of system is used to move the body? 
Study our review about the Musculoskeletal System under Physiology.

What sources of protein rich foods are available to a vegetarian who will eat animal products but not meat itself? 
Click on post comments to answer.

What is an example of interspecies competition? 
Read our review on Ecological Interactions under Ecology.

A normal vision man and woman produce three boys, one of which is colorblind and the other two with normal vision. What are the genotypes of the parents? 
(This is a sex-linked problem). Will chances be 50%?

Why is bacteria economically important? 
Visitor's comment: Bacteria is economically important because they recycle nutrients and help in making food and medicines and they also convey atmospheric …

What does the human respiratory system consist of? 
Read our review about the Respiratory System under Physiology.

What makes rocket/arugula (Eruca sativa) spicy? 
I am 4 and my mummy and I have looked on the internet for the answer but the closest answer we can find is that capsaicin is the thing that makes peppers …

What is amoeboid movement? 
Study Cell Movement .

The HIV is a virus that destroys the circulatory system? 
Study AIDS .

When Darwin returned from the voyage of the Beagle, what did he do about his ideas of evolution? 
--- Read our review on Evolution. Click on post comments to answer. For a complete review of all basic Biology subjects, download our full …

A fossil was once a living organism but its tissues have now been replaced by minerals and it no longer exhibits most properties of life, except for...? 
A. homeostasis B. organization C. growth and reproduction D. response to stimuli E. metabolism

What controls the movement of substances into and out of a cell? 
--- Click on post comments to answer. For a complete review of all basic Biology subjects, download our full book with more than 1800 reviewed …

Why are specialized terms needed to indicate different positions and directions of the body parts? And how would you give an example 
Good question. Example: Anterior side of the leg, posterior side of the leg. --- Click on post comments to answer. For a complete review …

Nematodes evolutionary milestone... 
Click on post comments to answer. --- For a complete review of all basic Biology subjects, download our full book (more than 400 pages) with …

What are the precursors that make up macromolecules? 
(Polymers.) --- Click on post comments to answer.

What is the process by which DNA polymerase is able to correct mismatched nucleotides? 
Click on post comments to answer.

What is the theory of evolution by natural selection? 
Study Evolution . Click on post comments to answer.

What is the most poisonous animal? 
Golden frog? Click on post comments to answer.

How can different species share the same habitat and reduce competition? 
By having different niches. Read Ecological Interactions . Click on post comments to answer.

What is called the area in which certain types of plants or animals can be found living in close proximity to each other? 
Click on post comments to answer. Read Ecosystem .

What is the function of filament severing? 
Related page: Cytoskeleton . Click on post comments to answer.

What are the types of natural selection? 
Click on post comments to answer.

Which organ is capable of doing diastole and systole? 
Click on post comments to answer. Read: Arthropods .

How do plants and animals function? 
Click on post comments to answer. Read Cell Biology .

Is the walls of the vena cava thick or thin? 
Click on post comments to answer.

How are medical drugs being produced by genetic engineering ? 
Click on post comments to answer.

What are the steps of the scientific method? 
Click on post comments to answer.

What is the purpose of the eyelash on a fetal pig? 
To help with the development of the eye. --- Click on post comments to answer.

Why do you keep control variables the same between the control group and the experimental group? 
Click on post comments to answer.

If a lake has been polluted by sewage, compared to unpolluted water, the water in this lake will have...? 
Oxygen? Editor's note: Read Environmental Issues .

Are ligaments part of the muscular system or skeletal system? Why? 
Related review: Musculoskeletal System .

How does an x-linked disorder happen? 
Related review: Sex-linked Inheritance .

Is the spread of roots around a plant usually greater than the depth of the roots? 
Related page: Plant Tissues .

What is the first group of organisms that has a complete digestive tract? 
Study Digestive System .

What is science? 
Click post comments to answer.

Between which germ layers in the roundworm's psuedocoelom located? 
Study our review on roundworms: Nematoda .

After DNA is cut with a restriction enzyme, how is the mixture of DNA fragments sorted? 
Related review: Genetic Engineering .

Besides transpiration, what else do plants do to survive? 
Read our review Plant Physiology .

What is the ecological role of weeds? 
Weeds provide colonization for other plants to grow. They provide weathering of the soil to return nutrients and to rocks to make room for other organisms …

What is the the biggest squid in the world? 
Related review: Molluscs .

What is unbalanced karyotype disorder? 
You can study here: Karyotype .

From what do Earthworms breathe through? 
Study Annelids .

What is the theory of evolution by natural selection? 
Read our review on Evolution .

Which acids are released in the stomach? 
Read the review about the Digestive System .

Explain why the enzyme alanine transaminase is used in dignosing liver dysfunction but not pancreatic dysfunction? 
I don't know the answer.

How did the postman butterfly get its name? 
Related review: Arthropods .

During the formation of genetically engineered insulin, the gene for insulin is introduced into E. coli. Which type of vector can be used to transfer this gene into the bacterium? 
Study this review: Genetic Engineering .

What are thermophiles? 
Thermophiles are small microorganisms that thrive in hot conditions; they can be found in extremley hot places and there are other types of 'philes'.

Are movement corridors...? 
a. Always created by humans b. Only found along stream sides c. Not beneficial, but they are harmful because they allow for the spread of disease d. …

Why moisture should be contant in the storage of food grains? 

What is the difference between incomplete and complete digestive system? 
Study this review: Digestive System .

What is the effect of gravity on plant growth? 
Study this review: Plant Physiology .

At what pH does amylase work best to control starch digestion (ph 3, 7 or 11)? 
Read review Digestive System .

During photosynthesis what is the source of carbon of the carbohydrate that is formed? 
Related page: Photosynthesis .

How do Platyhelminthes respond to the environment? 
Read Flatworms .