Upper motor neuron

Q: Describe how drinking water is treated. How does a septic system work?

A: Drinking water treatment is done to keep its quality. A septic tank system is a small-scale, undergr...

Q: Habitat Isolation ,Temporal Isolation , Behavioral Isolation , Mechanical Isolation , Genetic Isolat...

A: Reproductive isolation mechanism is a phenomenon in which mating between two organism is prevented s...

Q: High-energy electrons being passed from carrier to carrier along the electron transport system in ce...

A: This question belongs to the function of electron transport chain.

Q: Use examples to describe some patterns of macroevolution.

A: Macroevolution can be defined as the evolution of the larger organism as compared to the original or...

Q: 4. Put the following steps of the ELISA assay in order (Write the numbers 1-4 in the blank): Add Ant...

A: Introduction: ELISA stands for Enzyme Linked Immunosorbent Assay. It is a commonly used laboratory t...

Q: Illustrate and describe the life cycle of the following:  Necator americanus

A: Necator Americanus is a species of hookworm.

Q: People could observe the development of an embryo before they had the tools to see cells and parts o...

A: Answer :- The fertilized egg (zygote) separates over and over as it drops down the fallopian cylinde...

Q: . You have identified a mutation in yeast, a unicellular eukaryote, that prevents the capping of the...

A: Central dogma states the conversion of DNA into mRNA via transcription and mRNA into proteins by tra...

Q: Predict the transmission of phenotypes associated with maternal effect genes. 2. Interpret the resu...

A: Cytoplasmic inheritance, also known as extra nuclear inheritance, extra chromosomal inheritance, non...

Q: Give at least 3 reproductive (prezygotic) isolating mechanisms? Briefly discuss how it isolates indi...

A: The reproductive isolation mechanisms are a set of evolutionary mechanisms, behavioural, and physiol...

Q: Virology :Which genome type results in the fastest route to +mRNA

A: Viruses are obligatory intracellular pathogens. The virus particles are acellular and contain a nucl...

Q: In what type of solution tonicity is this plantcell in? How do you know this? What is it called when...

A: Introduction: Plasmolysis is the process in which cells lose water in a hypertonic solution.

Q: Review the state of ocean fisheries and identify reasons for their decline

A: ANSWER: State of ocean fisheries: Ocean fisheries, which includes the development of aquaculture and...

Q: Photosyntheis related question (s): When protons move out of the thylakoid, are they moving up or d...

A: The photosynthesis involves production of simple carbohydrates (glucose) from the carbon dioxide and...

Q: Which of the following is TRUE in regard to water vapor as a greenhouse gas? Select all that apply. ...

A: Option 1 And 2 is false . Option 3 and 4 is true.

Q: After fire devastates all of the trees in a wide swath of forest, populations of a species of tree-d...

A: A gene is a short sequence of nucleotides on a chromosome or DNA molecule that codes for the creatio...

Q: 1- One of the following diffusion paths is not driven by the concentration of sub: a- Primary active...

A: Introduction: Passive transport is a movement of biochemicals and other atomic or molecular substanc...

Q: Briefly outline the steps of DNA extraction as carried out in a lab for the purposes of sequencing, ...

A: Although the techniques used are same, there is difference in the chemicals used by ThermoFischer. T...

Q: The effective-refractory period present during Phase 2 of the action potential of ventricular myocyt...

A: A transient shift in membrane permeability across the cellular membrane of cardiac cells is known as...

Q: A geneticist uses a generic engineering approach to mutate the TATA-building protein (TBP) of a muri...

A: *The TBP is the gene that instruct for making a protein called the TATA box binding protein. *This p...

Q: Historically, how has the origin of life on earth been explained?

A: Introduction The mythological explanation for the phenomenon of life on Earth is the most frequently...

Q: Use the image to correctly fill in the following blanks. The whole specimen is a [A], a gametophyte ...

A:      Fill in the blanks:        The whole specimen is a ________  (A), a gametophyte structure found...

Q: In the following graph, curve (line) N represents a vascular function curve (venous return curve) in...

A: Introduction :- Venous return is the flow of blood from the periphery back to the right atrium, and ...

Q: One of the following Is not a characteristic of the second Active transport: a- Using the hydrolysis...

A: Active transport is the transport of solutes across a semipermeable membrane with the input of energ...

Q: The difference between sympatric and parapatric speciation is_______ . a. parapatric speciation occu...

A: Speciation is the evolutionary process by which new species emerge from old or existing species. The...

Q: 5. Define reduction 6. What is the role of NAD*/NADH in cellular respiration?

A: The chemical reactions which involve the transfer of electrons from one chemical substance to anothe...

Q: Epinephrine stimulates a variety of adrenergic receptors. Which of the following receptors when stim...

A: The adrenergic receptors (α1, α2, β1, β2, β3) are a type of G protein-coupled receptors and many cat...

Q: 30- Which of the following is true about muscle contraction: a- Results by the actin sliding along m...

A: Muscle contraction us the tightening , shortening or lengthening of muscles when you do some activit...

Q: Which of the following statements about tRNA molecules is TRUE? Multiple Choice TRNA assumes a doubl...

A:   A transfer RNA or tRNA is a special kind of RNA molecule. Work of it is to match an mRNA codon wit...

Q: Name three industrial fishing practices, and explain how they result in bycatch and marine habitat d...

A: Fishing practices are employed to sustain the ever-growing human population. However, it comes with ...

Q: Hi! The image is there as reference.  GIve other examples of homologous structures.

A: Homologous structures are the organs / structures that have similar appearance means their structure...

Q: 53- Which of the following is mis-matched: a- Vistibulospinal tract/ orientation of the head b- Rubr...

A: *The Vestibulospinal tract consists of two tracts that is lateral and medial. *Vestibulospinal tract...

Q: Meiosis: Sequence of Stages Number the stages of meiosis from 1 to 8 to show their correct chronolog...

A: * meiosis is the cell division that reduces chromosomal number to daughter cells by half and produce...

Q: What is the importance of occurrence of evolution?

A: Introduction: Evolution is the change in the inherited characteristics of biological populations ove...

Q: When considered individually, the type of blood vessel that has the lowest resistance is. A)arteriol...

A: Introduction:- In blood vessels, most of the resistance is due to vessel diameter, Resistance is a f...

Q: 5. In the experiment of cell fusion, when tumor cells were fused with normal cells, the subsequently...

A: Please post the 6th question separately it has the missing information for the options.

Q: QUESTION 18 Psychologist Lev Vygotksy emphasized the child as a social being and development as cont...

A: Lev Vygotsky - Socio-cultural theory Vyfgotsky is a Russian psychologist , In his theories he states...

Q: Which of the following is/are not found in a bacterial mRNA molecule? (a) stop codon (b) upstream le...

A: The transcription can be described as the process involved in the formation of mRNA molecule from DN...

Q: Which is NOT a factor that increases stroke volume with endurance training.       Reduced cardiac ...

A: ANSWER;- Reduced cardiac and arterial stiffness is not a factor that increases stroke volume with en...

Q: What is a plausible hypothesis that describes a possible mechanism to explain the differences betwee...

A: Introduction: Only certain species of mosquitoes of the Anopheles genus and only females of those sp...

Q: Complete the punnet square and determine the PR of the cross. Dihybrid Cross F Phenotypic ratio RY R...

A: The dihybrid cross refers to the crossing of two individuals for two genes. 

Q: The transverse tubular system: A)speeds the transmission of an action potential down the length of a...

A: *Tansverse tubular system is a network of interconnecting rings that surrounds a myofibril. *It prov...

Q: If the field diameter is 2.4 mm and there are 16 cells across the field of view when using the 40X o...

A: Given, Field diameter - 2.4 mm Cells across the field of view - 16 cells Objective Lens - 40X The ma...

Q: In humans, brown eyes (B) are dominant over blue (b)*. A brown-eyed man marries a blue-eyed woman an...

A: The gametes are produced as a result of meiosis in diploid parent cell. 

Q: What valuable information can an archaeologist gain from understanding the connections between long-...

A: Archeology gives us the chance to find about past culture through the investigation of artifacts, an...

Q: Describe and explain the major steps in the process of wastewater treatment. How can artificial wetl...

A: Wastewater treatment : It is the process of removing impurities from wastewater & converting it ...

Q: Expression of ---- does not require new protein synthesis.     a.immediate early genes b. delayed ea...

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question s...

Q: Labelled primers or dNTPs are useful in some recombinant DNA techniques. What are DNA primers? What...

A: 1* DNA primers is a short and single stranded nucleic acid sequence that is the starting point for D...

Q: Select physiologic factors of the ventilation-aeration system that limit VO2max and aerobic performa...

A: Answers:  Minute ventilation Ventilation-perfusion ratio Hb-O2 affinity

Q: Explain why in cells that are genetically NF1–/–, basal levels of GTP-bound activated Ras are higher...

A: Neurofibromatosis type 1 (NF1) is a typical hereditary problem portrayed by various neurofibromas, f...