What do you understand by the term bio-pesticide? Name and explain the mode of action of a popular bio-pesticide.

Q: .In 1668, the Early scientist believed that life arose from (1) . Italian physician (3) _ time, biol...

A: According to the theory of spontaneous generation, origine of life take place from dead and decaying...

Q: a) Is the following statement True or False ( Sex influenced traits are passed from mother to offspr...

A: Concept: Sex influenced traits are those characters that influenced by the sex of the offspring, and...

Q: 17. The outermost boundary of the cell is a .cytoplasm b.nuclear membrane C.plasma membrane d. none ...

A: Introduction: A cell is defined as the smallest, basic unit of life that is responsible for all of l...

Q: In humans, males are heterogametic and females are homogametic, Explain. Are there any examples wher...

A: Gamete is a mature haploid male or female germ cell that is able to unite with another gamers of the...

Q: Why is chromosome 21 the smallest and not chromosome 22? considering that a karyogram is arranged fr...

A: Introduction: In the nucleus of each cell, the DNA molecule is bundled into thread-like structures r...

Q: In humans, males are heterogametic and females are homogametic, Explain. Are there any examples wher...

A: In case of human beings;Females are known as homogametic because In females the 23rd pair of chromos...

Q: Can you compare tuberculosis and covid 19 please and tell me what are the similarities and the diffe...

A: There are certain harmful bacteria, viruses and other micro-organisms that causes several diseases t...

Q: While creation and presence of variation is directionless, natural selection is directional as it is...

A: The creation and presence of variation in an organism is directionless, as they occurs randomly and ...

Q: mind map about brain functions: left and right hemispheres.

A: The brain is a complicated organ that regulates our body's thought, memory, emotion, touch, motor sk...

Q: other important work

A: Culture media is of fundamental importance for most microbiological tests-                          ...

Q: Importance of Adaptation as a Mechanism for the Survival of a Species

A: All organisms need to adapt themselves to their ever-changing environment for the purpose of surviva...

Q: The following are actual mutualistic partnerships that involve a protist ar is the exception? Tricho...

A: Solution : People get trich from having unprotected sexual contact with someone who has the infectio...

Q: Coal miners inhale large quantities of fine coal dust when they are working in the mines. Over the y...

A: Introduction: The lungs are a couple of light, air-filled organs situated on either side of the ches...

Q: water vascular system of Sea Stars (Class Asteroidea) and the hemal system of solitary tunicates (Cl...

A: The water vascular system is present in sea stars as well as the hemal system of solitary tunicates....

Q: portant and what are the things that we need to

A:

Q: A species of freshwater snail is introduced to many ponds on an island. In ponds with crayfish (a sn...

A: The correct statement that summarises what is happening in this example is-  • In allopatry, mechani...

Q: 14/ When red blood cells are placed in a low-concentration saline solution, we notice deformation an...

A: 14.Osmosis can be defined as a movement of water from the region of its  higher concenteration to th...

Q: e) The velocity of nerve impulse conduction is the greatest in a) heavily myelinated, large-diameter...

A: There are two types of nerve fibers which are - Myelinated and non-myelinated nerve fibers. The basi...

Q: In Drosophila, a fully heterozygous female with the X-linked recessive genes a, b, and c (not necess...

A: A fully heterozygous female with x linked gene a, b, c was mated with male a, b, c. Parental cross -...

Q: Familial intestinal polyposis results in multiple finger-like growths (polyps) in the lining of the ...

A: Option 3 i.e. 2 children will be affected and the detailed crossing is given as follows.

Q: Hemlock Looper | attacks deciduous trees | is native to North America occurs Atlantic coast to Alber...

A: Hemlock looper( Lambdina fiscellaria) is a moth. 

Q: What is Down's syndrome? Give its symptoms and cause. Why is it that the chances of having a child w...

A: Down syndrome is a human genetic condition caused by chromosome 21 trisomy. 

Q: What is a quantitative isolation in bacterial cultivation and how it is done? Explain.

A: To cultivate and count the bacteriophage, plaque formation in solid agar media is used. Plaques are ...

Q: When engaged in aquatic training, what are the factors/things you need to do or consider in order fo...

A: Swimming is a type of water sports. 

Q: Which is false about meiosis ? 2 A.Results in Daughter Cells with a full no. of chromosome. b Daught...

A: Introduction :-  

Q: Identify the evidence shown by the picture and explain how it supports evolution.

A: Evolution is a process as well as the end result of a process. It is described as the constant speci...

Q: In determination of microbial motility, what is the value of a hanging-drop perparation? what is the...

A: Hanging drop is a motility testing which helps microbiologist to view motility of bacterium.

Q: DNA Template: AAC CGA TCC TAT CGG AAA TTT TGC ATG ATC TAT Give the nucleotide sequence after DNA rep...

A: The replication is the process of new DNA synthesis from the old DNA. The transcription is the proce...

Q: Draw your concept of a fungus and a plant. In the drawings, what structures play important function/...

A: Fungi consists of structures like branched filaments which are tubular in shape. These structures re...

Q: Hannah was reading her histology book at the cafeteria’s eat-all-you-can salad bar. She was having t...

A: Connective tissue is a special tissue that is found in animals between other tissues in the entire b...

Q: explain the factors that influence the growth of microorganisms

A: There are various factors that influences growth of microorganisms. 

Q: The rate of decomposition of detritus is affected by the abiotic factors like availability of oxygen...

A: Microorganisms are responsible for the breakdown of debris. 

Q: When using a cladistic approach to systematics, which of the following is considered most important ...

A: Introduction: Systematics is an attempt to understand the evolutionary interrelationships of living ...

Q: muscles,

A: Muscles are soft tissues. Many stretchy fibers make up your muscles.muscles help you run, jump or pe...

Q: A heterozygous reciprocal translocation involving 2 non-homologous chromosomes resulted to a new seq...

A: Translocation refers to a change in location. In genetics, some part of a chromosome is transferred ...

Q: 3. Rose plants produce large, attractive bisexual flowers but they seldom produce fruits. On the oth...

A: The failure of roses to produce fruit could be attributed to a variety of factors. The following

Q: 15.Continuously proliferating cells include all of the following except a . Brain cells. B.Skin cell...

A: Human body is made up of trillions of cells. Every part of the body is made of cells.  Cells compose...

Q: How can scientist sort chromosomes like that in a karyotype?

A: Karyotype is the preparation of the collection of metaphase chromosomes.It is a laboratory technique...

Q: 10 About Flagella ,which is false? 1. Are microfilaments. b. Are Microtubules. C.Functions for movem...

A: Introduction: Flagella are minute hair-like structures that help a cell move around.Flagella have a ...

Q: 4/ Gluteraldehyde solution is a common stabilizer for electron microscopy examination * True False 1...

A: Gluteraldehyde is a high level disinfectant and chemical sterilant. It is a colourless glass like cr...

Q: Use the internet or your textbook to identify the functions of the following 5 vascular plant struct...

A: Vascular plants These are the plants that have the specialized conducting system. clubmosses, ferns,...

Q: the following correctly describes a possible scenario dunng a run of gel electrophoresis wit DNA sam...

A: This is a technique widely used for the separation of DNA fragments. These are isolated according to...

Q: What is the main mechanism contributing to the absolute refractory period in neurons:

A: The neuron is the basic working unit of the brain, a specialized cell designed to transmit informati...

Q: Why medical clearance is necessary before engaging into different physical activities?

A: Introduction:- Many physical activities involve an element of risks nature such as sports, outdoor a...

Q: 5.What is wrong ? the cell is a. Of two types 5. prokaryotic cell has a big nucleus. E. Eukaryotic h...

A: Answer :: The cell  All living organism or living thing that are composed of cells. The cell is also...

Q: What is the 1% extinction value of the protein used to calibrate this experiment? I obtained a grad...

A: Extinction coefficient It is defined as the absorbance divided by the concentration and the pathleng...

Q: factor of the ILC3 cells was responsible for the inflammation? O IL-17 IL-22 O TNF

A: Innate lymphoid cells (ILCs) are innate counterparts of T cells that contribute to immune responses ...

Q: How do ionic and non-ionic detergents differ in their ability to disrupt biomembrane structure?

A:       There are two types of surfactants. These are: ionic surfactants nonionic surfactants....

Q: Fungi and animals are both part of a group called Opisthokonta. The vast majority of fungi are multi...

A: These consists of a wide range of eukaryotes which consists of both animals and fungi. Previously th...

Q: What is Down's syndrome? Give its symptoms and cause. Why is it that the chances of having a child w...

A: Human genetic disorders are caused by the absence, excess, or abnormal arrangement of one or more ch...

Environmental health and hazards

An organism's environment is the environment in which it lives and has an impact on its well-being. The World Health Organization (WHO) defines environmental health as "those aspects of public health, such as quality of life, that are influenced by physical, chemical, biological, social, and psychosocial components in the environment." Environmental health is concerned with both natural and man-made settings in order to enhance public health. Environmental science, occupational medicine, toxicology, and epidemiology are the key subdisciplines of environmental health.