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Q: A4-month-old infant had been running a moderate fever for36 hours, and a nervous mother made a call ...

A: Antibiotics are products produced naturally by microbes or semi-synthetically industrially which kil...

Q: Discuss what the fossil record reveals about early animalevolution.

A: Evolution is the branch of science that deals with various characters of an organism compare to thei...

Q: What are an apical meristem and a terminal bud?

A: The flowering plants contain vegetative organs like stem, roots and leaves. The parts of flowering p...

Q: In Figure 13-2, the transplantation of certain regions of embryonic tissue induces the development o...

A: The ectoderm, mesoderm, and endoderm are three germ layers in the embryo that give rise to all cells...

Q: explain the four stages of gas exchange in animals withcirculatory systems and lungs?

A: In large and active animals, respiratory systems involve respiratory organs that work together as a ...

Q: How could you add the five steps of natural selection for a Bengal tiger? please relate this to adap...

A: Natural selection is a selective procedure for the survival of fittest and leads to evolution into n...

Q: Describe the role of collagen and seed crystals in bonemineralization

A: Ans: Bone mineralization: It is the highly ordered and specific process in which organic bone ma...

Q: Make a comparison between the vertebrate and the non vertebrate of the different body systems of dif...

A: In kingdom Animalia has TWO categories base on presence and absence of vertebral column (Spinal cord...

Q: Is allopatric speciation more likely to occur on an island close to a mainland or on a more isolated...

A: The phenomenon of evolution of a population to form distinct species is called speciation. A group o...

Q: What are the segments of DNA that code for traits called

A: Answer:  DNA = Deoxyribonucleic acid is the genetic material in all living organisms. it carries gen...

Q: Describe how age-structure diagrams and survivorship curves are used to predict future growth.

A: growth is increase in number.

Q: While jumping off the back steps at his house, 10-year- old Cesar lands on his right heel and breaks...

A: The ankle, or tarsus, is comprised of seven tarsal bones: • The talus bone is located on the superio...

Q: Are megasporophylls in Selaginella haploid or diploid?

A: Selaginella is a vascular plant commonly known as spike moss. Selaginella produces both microsporang...

Q: How long does it take for the embryo to implant into the uterine wall ?

A: The sperm of male fertilized the ovum of the female results in formation of the zygote. Sperm is mot...

Q: What are some examples of alternative electron acceptors used inanaerobic respiration?

A: Molecules other than oxygen is used as electron acceptors in the anaerobic respiration. Both organic...

Q: How does it improve the efficiency of proteinsynthesis to have several binding sites for tRNA close ...

A: Translation - To translate an mRNA into a protein we require ribosomes and tRNAs. Ribosomes provid...

Q: What are the consequences of having an excess of nutrientssuch as nitrates and phosphates running in...

A: Eutrophication is a well known process in the environment

Q: Why is it advantageous for the oxygen-hemoglobindissociation curve to shift to the left in the lungs...

A: Oxygen dissociation curves depict the association between levels of oxygen and haemoglobin saturatio...

Q: Graph and describe the relationship between movement velocity and the amount of force exerted during...

A: As the force-velocity curve suffering from muscular strength coaching by most circumstances, the fir...

Q: Biology Question

A: This is a typical monohybrid cross as only one character is considered at a time. Here the trait whi...

Q: 1.Do you think Bangladesh is capable of doing transgenic crop research? Write your thoughts in detai...

A: We are answering first question. For second question Pls repost.     Bangladesh is on the verge of a...

Q: Explain why I − alleles in the lac system are normally recessive to I+ alleles and why I+ alleles a...

A: The Operon is the regulatory system present in DNA in cluster form, which contains structural genes ...

Q: When Widow’s peak is dominant over straight hairline.  What are the genotypic outcomes of a cross be...

A: As per Bartleby's answering policy, we can answer only one question, so kindly post the remaining qu...

Q: Which of the following blood types would agglutinate if donated to a person with blood type A+? a. A...

A: Answer: Introduction: Land Stainer was first to describe the measure blood types. Human RBC (Erythro...

Q: State the all-or-none law.

A: The nervous system comprises the brain, nerves and spinal cord. The nerves are responsible for carry...

Q: If a recipient cell receives DNA from another organism (a donor), horizontal gene transfer can occur...

A: Deoxyribonucleic acid is a molecule that is  composed of two polynucleotide chains that coil around ...

Q: Give a Genetic Evidence for CommonAncestry ?

A: Answer: Introduction: Evidence of common descent of existing organisms has been revealed by research...

Q: 50) Some protists, formerly united as the ʺamitochondriateʺ clade, have recently been shown to be ra...

A: The Kingdom Protista has been disassembled over several decades as a result of sequence studies reve...

Q: Define insensible water loss?

A: Sensible fluid losses seek advice from typical routes of excretion like urination and defecation.

Q: Contrast a physiological set point with a behavioral set point related to obesity.

A: Just like the set points that exist for any negative feedback biological control systems, set points...

Q: Explain the inflammatory response

A: Answer: Introduction: Both infectious and non-infectious carriers and cell injury activate inflammat...

Q: Biology Question

A: Albinism is an inherited genetic disorder that causes the body to produce little or no production me...

Q: Why is it advantageous for two control mechanisms —allosteric control and covalent modification— to ...

A: Enzymes are the proteins which act as a catalyst in chemical reactions. Enzymes never take part in c...

Q: Biology Question

A: In the immune system, lymphocytes refer to the white blood cells that play an important role in the ...

Q: In the disease scleroderma, excessive collagen, glycosaminoglycans, and glycoproteins are produced a...

A: Systemic sclerosis or Scleroderma can be described as a type of autoimmune disorder in which tighten...

Q: Diagram how the nucleus,endoplasmic reticulum, and Golgi apparatus act together with vesicles during...

A: The nucleus is termed the control center or brain of a cell. This is as a result of it controls and ...

Q: Explain rota terminal cross system and give example

A: A rotaterminal cross-system is a type of crossbreeding in which both rotational breeding and termina...

Q: How do circulatory and integumentary system work in terms of maintaining body temperature

A: Need to determine: How circulatory system maintains body temperature How integumentary system works ...

Q: What role did restriction endonucleases play in localizingthe gene associated with cystic fibrosis?

A: Restriction endonuclease can be defined as the type of enzyme which cleaves the DNA and cuts them in...

Q: How can studying individuals with damage to a particular brain region provide insight into the norma...

A: Researchers have identified a number of functional areas within the brain. These include primary sen...

Q: If the oxygen levels increased throughout your body, you would expect to see the following occur to ...

A: Our body always try to maintain the homeostasis of all chemical components inside of the body. When ...

Q: What is hyperthyroidism?

A: The thyroid gland is composed of follicles and stromal tissues these particles are held together by ...

Q: Describe how the economy of running might be evaluated in the laboratory.

A: The economy of a particular sport event influences the energy cost of the sport and interacts with V...

Q: Sometimes, cDNAs turn out to be “chimeras”; that is, fusions of DNA copies of two different mRNAs a...

A: c dna is complementary dna.  

Q: Assume you isolate a single stranded (+) RNA virus. When you examine the proteins in the virus, you ...

A: RNA-dependent RNA polymerase  or RNA polymerase or replicase  is an enzyme that catalyzes the replic...

Q: List the general categories of intercellular messengers and brieflydescribe how they differ?

A: The intercellular signaling mechanism is the mechanism, which helps in the communication process fro...

Q: Distinguish between active and passive mechanisms of movement across cell membranes.

A: The cell membrane is a kind of barrier through which the molecules enter as well as exit the cell. A...

Q: Describe the length-tension relationship in skeletal muscle fibers.

A: The skeleton muscle varies in shape, size, and arrangement of fibers. These range from small strands...

Q: Q: Alveococcosis infection pathway: a- water b- contact c-air-dust d- transmissive

A: Echinococcus is a bacterial tapeworm infection caused by the Echinococcus genus. Echinococcus can be...

Q: Calculate the number of RBC per 1 mm3. The volume of 1R is 0.004 mm3, the RBC count in 5R equals to ...

A: Red blood cells are also referred to as erythrocytes. These cells are formed in the bone marrow by t...