which of the following do molecules use as transportation when they are too large to move through a cell membrane?

Q: Try to trace the various components of human evolution (hint: brain size and function, skeletal stru...

A: The following are the numerous aspects of human evolution:   1) Dryopithecus africans - The brain si...

Q: In organism A, blue skin colour is dominant over yellow. If, heterozygous blue-skin of organism A we...

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous c...

Q: A chromosomal mutation that occurs during meiosis may or may not be expressed in an organisms offspr...

A: Mutations are changes in DNA sequence during a cell division. 

Q: While gazing intoan aquarium, you seebubbles coming from anaquatic plant (left). Whatare the bubbles

A: These are nothing but Oxygen bubbles. Bubbles can appear in your tank due to the aquarium plants. As...

Q: How can the evolution of one species affect the evolution of another speciees  Explain

A: In our ecosystem no species exists separately in the isolation that means each and every species are...

Q: Which statement describes how carbon dioxide exits the bloodstream at its final destination?

A: Diffusion is the process which resulting from random motion of molecules by which there is a net flo...

Q: 2. From the zygote, pluricellular organisms are formed by serial mitosis. Would this formation be po...

A: If mitosis starts resulting in offspring identical to their parent cell there would be no variation ...

Q: Give a brief account of viruses with respect to their structure and nature of genetic material. Also...

A: When located outside the host cell, viruses are sub-microscopic infectious organisms with a crystall...

Q: Considering the Polymerase Chain Reaction (PCR), we can state that: a) It is a technique that promo...

A: Answer - a) It is a technique that promotes linear amplification of the number of DNA molecules in a...

Q: What is the advantage of expressing a protein in mammalian cells versus bacteria?

A: The best way to express a mammalian protein is to express it in the mammalian cell because it would ...

Q: The trihybrid AaBbCc is crossed to the triple recessive, aabbcc, and the following  phenotypes are o...

A: Here, The offspring are obtained as follows: abc = 64 ABC = 71  ABc = 3 abC = 2  aBc = 11  aBC = 18 ...

Q: Protein Concentration Absorbance at 595nm (mg/mL) 0.05 0.0092 0.1 0.2 0.02 0.04 0.3 0.112 0.167 0.4 ...

A: There are few important points : To determine the amount of protein in an unknown sample is termed a...

Q: ​acetyl CoA to pyruvate   c)  ​pyruvate to urea   d)   carbon dioxid to glycerol

A: Solution : In addition to being a glucose precursor in liver and kidney, l-lactate is now also being...

Q: How does the function of the active site of an enzyme differ from that of an allosteric site?

A: Introduction :- The allosteric site is a molecule's ability to stimulate or inhibit (or turn off) en...

Q: Epithelium-Mesenchyme transitions (MET or EMT) are crucial morphogenetic events occurring during gas...

A: During EMT transition  there is loss of cell polarity as well as adhesion property of epithelial cel...

Q: desiccation: the ova or the sperm? Justify your stand. Provides means

A: Solution : sperm is more prone to desiccate quickly. Once sperm is DRY it is dead and cannot travel ...

Q: If 5X instead of 10X oculars were used with the same objectives now on your microscope, what magnifi...

A: Microscopy means the use of microscope for studying the cells. Microscope is an indispensable instru...

Q: Discuss the composition and funtion of the following parts of a flagellete - 1. Flagella 2. Sucking ...

A: Any of a group of protozoans, generally uninucleate organisms, that have one to many flagella for pr...

Q: Virology:Where does the 5’ cap come from ?

A: Introduction: CappingTo preserve the mRNA, a methylation guanine cap is inserted. It entails: Methyl...

Q: Why do you use oil on the slide to be examined with the oil-immersion objective?

A: Introduction  oil immersion technique is used to increase resolving power of a microscope.  It's a t...

Q: You are performing an experiment in which you are measuring the rate at which succinate is converted...

A: An experiment is needed to be performed in which the rate of conversion is measured where succinate ...

Q: Explain why using your dominant hand to react to a sound stimulus is faster than using your non domi...

A: When comparing with hands the normal human finds that the hand that is dominant works in a faster wa...

Q: Obligate aerobes, faculative anaerobes, microaerophiles, obligate anaerobes, or aerotolerants grow o...

A: *obligate aerobes are the organisms that grows only in presence of  oxygen. *These organisms by cell...

Q: What kind of specimen is in the picture and what is its epithelium

A: Epithelium is the type of body tissue that forms the covering on all internal and external surfaces ...

Q: 10. What are the problems that vertebrates needed to solve to adapt to the terrestrial environment s...

A: The following were the main issues that water-loving vertebrates had to overcome in order to adapt t...

Q: Cancer is a group of many different diseases that all are caused by... O Cells unable to exit the GO...

A: Cancer is a very complex and molecular disease that involves alternation of different molecules with...

Q: Cells are able to function because they (a) are closed systems (b) have mechanisms that transform en...

A: A cell is the smallest structural and functional unit of an organism, which is typically microscopic...

Q: When you mate two curly-haired cats, who are both heterozygous for both genes described above, which...

A: Given information Hairless condition is a recessive trait(hh) Straight hair is a recessive trait (c...

Q: In guinea pigs, black hair (B) is dominant to brown hair (b) and short hair (H) is dominant to long ...

A: This is a dihybrid cross in which the guinea pig has two genes. Hair colour is coded by one gene, wh...

Q: How has X-ray diffraction and the discovery of the structure of deoxyribonucleic acid (DNA) enhanced...

A: X -ray diffraction is the very important thing for the explanation of DNA structure. DNA is not in  ...

Q: Henrietta Lacks died in 1951, but her cancer cells are still alive today. Do you think they carry so...

A: Answer :: Henrietta Lacks died due to her long battle with cancer and it was particularly cervical c...

Q: When you mate two curly-haired cats, who are both heterozygous for both genes described above, which...

A:

Q: Which of the following pieces of information should be listed in a reference within the reference se...

A: In a scientific journal, this is important to mention four major parts in the reference section. tho...

Q: What is the purpose of vascular plant structures lab??

A: Vascular means vessels. Vascular plants is a plant that consists of xylem and phleom.  This is basic...

Q: Question 1 i. Choose the correct option. a. Which of the following 1. Mooing 2. Coughing 3. Snoring ...

A: Sounds are used by both humans and animals to communicate. However, the sounds produced by animals c...

Q: 2. From the zygote, pluricellular organisms are formed by serial mitosis. Would this formation be po...

A: Introduction: Zygote is defined as an eukaryotic cell formed by a fertilization event between two ga...

Q: Describe briefly the four major groups of Protozoa.

A: Protozoans are a category of creatures that are distinguished by their unicellular structure and fou...

Q: DIFFERENTIATE the development of the HUMAN male and female reproductive structures. Fill in the tabl...

A: Indifferentiated gonads: ovary and testis Mesonephric tubules and ducts: trigone of the urinary blad...

Q: Sister chromatids separate from one another during mitosis in... O Anapha Metaphase Prophase Telopha...

A: Answer  Anaphase

Q: Where are the chemoreceptors that detect the acidity of the blood and trigger the respiratory compen...

A: A chemoreceptor determine the alteration in the familiar setting, including a rise in carbon dioxide...

Q: Before X-ray diffraction and the discovery of the structure of deoxyribonucleic acid (DNA) was ident...

A: The structure of DNA, as represented in Watson and Crick's model, is a double-stranded, antiparallel...

Q: *Case Analysis Patient ID: A.C, a 4 year old female from Daraga Albay. History source – Mother 100...

A: Solution : Mebendazole, albendazole and tiabendazole work by preventing the worms from absorbing the...

Q: Why would the pronephros and mesonephros in humans need to grow and develop if they would eventually...

A: There are various series of events proceeds during the development of kidneys, and these events are ...

Q: List and explain the added advantages of multivariate analysis over bivariate analysis.

A: In an experiment, the study involving several measurements done on each unit and the relationship am...

Q: What is the function of the hyoid arch muscles of fish tetrapods?

A: Answer  Function of the hyoid arch to form the depressor mandibulae. 

Q: A researcher mutagenized a group of butterflies and isolated six butterflies with extra-long bodies....

A:  Mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during ...

Q: o00 000 Epithelium-Mesenchyme transitions (MET or EMT) are crucial morphogenetic events occurring du...

A: Developmental biology describes how interacting mechanisms generate an organism's various size, form...

Q: 2. From the zygote, pluricellular organisms are formed by serial mitosis. Would this formation be po...

A: The "cell cycle", also known as "cell division", is a set of processes that occur in a cell leading ...

Q: Vermillion eye color in Drosophila sp. is a sex-linked recessive trait. What  phenotype would be fou...

A: Considering XvXV as  Vermilion eye coloured female the crossing is given as follows. The phenotype w...