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Q: What does the endosymbionttheory propose as the originfor mitochondria andchloroplasts? Explain.

A: Mitochondria are the cell organelle. It is usually termed as power house of the cell because it gene...

Q: Dentinogenesis imperfecta is a rare, autosomal, dominantly inherited disease of the teeth which occu...

A: Dentinogenesis imperfecta can affect both primary teeth and permanent teeth.

Q: Mention various kinds of transpiration.

A: The mechanism of water movement through a plant and its evaporation from aerial parts from the leave...

Q: How do detergents solubilize membrane proteins?

A: Step 1 Membrane proteins are proteins molecules that are attached to or associated with the membrane...

Q: How does thephotoperiodism affect theflowering of some plants?

A: Plants are phototrophs that produce the energy and molecules needed for their growth and development...

Q: What is the exact location of proximal convoluted tubule.

A: To find :  The exact location of proximal convoluted tubule.

Q: How do the four cells at the end of meiosis differ from the original mother cell?

A: Meiosis is a process in which four cells containing half the original amount of genetic material are...

Q: Briefly describe several mechanisms inbiosynthesis of macromolecules.

A: Introduction: Biological macromolecules are large molecules that are necessary for the sustenance of...

Q: Two organisms, AABBCCDDEE  and aabbccddee,   are mated to produce an F1 that is self-fertilized.  If...

A: Given n alleles at a locus, the number genotypes possible is the sum of the integers between 1 and n...

Q: True or False: Proteins are created by linking amino acids together in protein synthesis

A: Biomolecules are organic compounds found in living organisms. All living organisms will have these b...

Q: Help filling this table out

A: The microbial growth can be controlled or prevented by the use of antimicrobial agents which can be ...

Q: Which genera of Alphaproteobacteria are known toform nitrogen-fixing nodules in plants?

A: Plants are the autotrophic organisms that produce their own food using sunlight and inorganic compou...

Q: Distinguish each of the following orders from the others: Araneae, Scorpiones, Opiliones, Acari

A: Arachnida is a class of joint-legged invertebrate animals (arthropods), in the subphylum Chelicerata...

Q: What is Malaria?

A: Pathogens are the organisms that are capable of disrupting the normal physiological balance of an in...

Q: True or false: When oncogenes are present, a cell is more likely to be normal (non-cancerous) than w...

A: The normal growth and functions of human cells are primarily based on the information stored in each...

Q: Which are the three different types of meiosis that can take place, each of which produces a differe...

A: Meiosis is a type of cell division in which the daughter cells formed have half the ploidy level as ...

Q: Define TALEN?

A: TALEN stands for Transcription activator-like effector nuclease.

Q: Which part of mango fruit is edible?

A: Mango fruit is a drupe.

Q: Draw a well labelled diagram of excretory system.

A: Nephrons are the structural and functional unit of the nervous system that involve in the removal of...

Q: Explain how the rate of transpiration is affected on (i) a windy day (ii) a foggy day.

A: Transpiration involves water loss in the form of water vapour from the plant’s aerial part such as s...

Q: How does the life cycle of houseflies contribute to the presence of E. coli bacteriophages in their ...

A: Flies are mostly found in a various range of habitats and they move due to their ability to fly as w...

Q: Which are the key feature of the DNA molecule?

A: DNA was discovered by Friedrich Meischer in the year 1869. It consists of several different componen...

Q: Hypermetropia can be corrected by the use of convex lens. Comment.

A: The ability to see is called vision. There are 3 common defects of vision, including myopia (shortsi...

Q: Where are gymnamoebas found in nature? How dothey feed?

A: Gymnamoebas are common unicellular amoebozoans. They constitute a large group of amoebozoans.  

Q: What are small differences among individuals called?

A: The study of genes is known as genetics. All individuals has their own gene which is responsible for...

Q: What were the major microbiological interests ofMartinus Beijerinck and Sergei Winogradsky?

A: Martinus Willem Beijerinck was a Dutch microbiologist and botanist who was one of the founders of vi...

Q: In cocker spaniels, solid coat color is dominant over spotted coatcolor. If two heterozygous dogs we...

A: Genetics is the branch of biology that deals with the study of genome of an organism and its gene ex...

Q: Which is/are false about innate and specific immunity?     B cells are part of the innate immu...

A: The first line of defense against non-self pathogens is the innate immune response. Its response con...

Q: What are gametogenesis with example?

A: Cell division is a process of a parent cell replicating it chromosomal content and dividing itself i...

Q: Question: There are many stimuli that can reduce the ability for a person to fall asleep. What are s...

A: Sleep is a state in which consciousness is altered, muscle activities are reduced, sensory processes...

Q: Do bacteria have transposable elements?

A: Bacteria are microscopic single-celled prokaryotes that thrive in diverse environmental conditions. ...

Q: WHAT IF? Neanderthal fossils have been found only in Europe and theMiddle East. Explain how Neandert...

A: Neanderthals are said to the extinct species of archaic humans who used to inhabit the Earth about 4...

Q: A temperature-sensitive mutation is one in which the defect is not presented functionally until the ...

A: Introduction  Enzymes are the biomolecules especially proteins. Which helps in the speeding up of an...

Q: List any four uses of auxins.

A: The auxins are the plant hormones. It plays an essential role in the development and growth of plant...

Q: Production of any toxin in the body due to infection can be detected by____________.a) Bio-sensor b)...

A: Introduction: Toxins produced by microbes such as bacteria and fungi are called microbial toxins. Th...

Q: Some fats like olive oil spoil rapidly when exposed to air, whereas other fats like solid shortening...

A: Fats are a type of lipid consisting of triesters of glycerol and fatty acids or triglycerides. Becau...

Q: A 30year old male patient who was a contractor and building inspector in the Greater Accra region co...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: What is CRISPR? What can it do?

A: Unlike eukaryotic cells in plants and animals, prokaryotic cells such as bacteria and archaea have a...