The presence of Barr bodies in a cell indicates O the presence of sex-linked genetic disorder. O the presence of multiple X chromosomes. O that it is from an XY individual. O the absence of sex-linked traits.

Q: The redundancy of the genetic code means that some amino acids are specified by more than one codon....

A: A codon is the nucleotide triplet that encodes an amino acid. The three-letter nature of codons mean...

Q: Briefly explain how photosystems (I and II) capture light using different photosystems.

A: The light-dependent reactions use light energy to make two molecules needed for the next stage of ph...

Q: 2) Cross a pea plant that is heterozygous for purple flowers and homozygous dominant for yellow seed...

A: Heterozygous purple flower: Pp Homozygous dominant yellow seeds: YY Homozygous recessive green seeds...

Q: Domesticated banana plants produce seedless fruit because they are______ . a. triploid d. propagated...

A:

Q: Identify two (2) important protozoan parasites of humans and discuss their importance in human healt...

A: Protozoa are single celled, microscopic, free living organism or that can be parasitic in nature. It...

Q: "Polymerase binding is never very efficient unless CAP is alsopresent to facilitate the process". Ex...

A: A functional unit of DNA comprising a cluster of genes controlled by a single promoter is called an ...

Q: Multiple choice 1.) An Action potential A. is essential for nerve impulse propagation B. involves th...

A: 1.) An Action potential Answer: A. is essential for nerve impulse propagation. Explanation- The tran...

Q: Give an example of application of recombinant DNA in the following fields: crop production, medicine...

A: Answer - Recombinant DNA (r DNA) is a technique by which we cut and paste DNA sequence of interest u...

Q: Propose some possible reasons why mutations in the RPSA gene affect only the spleen and not other ti...

A: Spleen is a small part present in the gastro intestinal tract of an individual. Spleen has some func...

Q: The final amount of each primer required in a PCR reaction is 25 picomol. If the total volume of the...

A: This is a dilution based calculation. We can dilute a stock solution to get the desired concentratio...

Q: saccharomyces, hydra, and paramecium

A: Hydra  is a genus of small, freshwater organisms of the phylum Cnidaria and class Hydrozoa. They are...

Q: Which of the following is FALSE? A. Bile is a fat molecule-busting enzyme B. Vitamins are organic co...

A: The digestive system is responsible for digestion and absorption of nutrients from the consumed food...

Q: SR proteins are essential to proper spliceosome assembly and are known to take part in the regulatio...

A: Spliceosomes are massive ribonucleoprotein (RNP) complexes found largely in eukaryotic cells' nuclei...

Q: All statements are related to blood sugar, Select the one that is NOT true.

A: Blood sugar it is the very important component in living organisms, it is also known as glycaemia. S...

Q: Celiac disease is a disorder triggered in susceptible individuals by exposure to gluten.  Gluten is ...

A: Celiac disease is a digestive and autoimmune disorder that can damage your small intestine. People w...

Q: How important is the coordination of body parts and for some parts to act as controller to the succe...

A: Answer : Human beings are the highest level species living on the planet. They are  most higher just...

Q: Capillary Refill Results: Table 2 Right Hand Refill Time Left Hand Refill Time Thumb Middle Pinky 1....

A: Capillary refill test is a rapid test used for assessing the blood flow through peripheral tissues.I...

Q: If a recessive mutation occurs in a male on an X chromosome versus a Y chromosome, leading to steril...

A: The males have two different sex chromosomes, X and Y. The females have only a single type of sex ch...

Q: Describe how modern organisms can be used to determine evolutionary relationships.

A: Evolutionary relationships between organisms can be inferred using modern organisms that are alive t...

Q: when viewing an organism under the 40x objective lens, you estimate that 6 organims could fit across...

A: 40x objective lens are high powered objective lens which is used to observe fine details in a specim...

Q: Starch and Cellulose. Which one can be hydrolyzed by you and most mammals? Why? Also, discuss the r...

A: Introduction :- Starch is a polysaccharide made up of 1,4 connections between glucose monomers. The ...

Q: 6 The strategy of holding one reactant constant while the activity of a second is determined is impo...

A: The enzymes are biocatalyst that helps in performing specific chemical reaction within the living or...

Q: Do the initiation and termination codons specify amino acids? If so, which ones?

A: Codon can be defined as a trinucleotide sequence within DNA or RNA molecule that is specific for cer...

Q: Write a short note on Therapeutic Lifestyle Change ?

A: The term lifestyle can be referred to as a specific way of living that is utilized by the human bein...

Q: What is the difference between a structural gene and a regulator gene? a. Structural genes are tran...

A: The fundamental morphological and physiological unit of heredity is the gene. DNA makes up genes. So...

Q: How important are evidences of evolution to the present time?

A: Evolution is the process by which the inheritable traits of biological populations change over time....

Q: In Drosophila, the brown mutation (bw, chromosome 2, position 104.5) results in brown eyes, while mi...

A: The pigmentation of the eyes of Drosophila melanogaster is due to the synthesis and deposition in th...

Q: In which situation would passive transport not use a transport protein for entry into a cell

A: Transport can take place in two ways mainly -  Passive transport - move along the concentration gra...

Q: In the absence of Separase, how would this affect the chromosomes dynamic during mitosis? Explain in...

A: If separase is absent , cohesin rings can't be cleaved off . Which eventually stop separation of sis...

Q: mutant strain of E. coli produces β-galactosidase in both the presence and the absence of lactose. W...

A: Bacteria are microscopic, single-celled life forms that exist in their millions, in each climate, bo...

Q: A. Based on what you learned from this module and from previous biology lessons, how doyou think can...

A: Genetic engineering is described as the use of biotechnology to manipulate the genetic material of a...

Q: The image depicts indole results on SIM agar for Sulfur Reduction Please help me to figure out its p...

A: Introduction:  SIM medium js used to test three things as the name suggests. These include Sulfur Re...

Q: In an analysis of the number of different bases in a DNA sample, which result would be consistent wi...

A: DNA- The full name of DNA is “deoxyribonucleic acid”. It is one of the most stable biomolecules foun...

Q: Which bases can exist in imino form? O Adenine, Cytosine Guanine, Thymine O Adenine, Cytosine, Guani...

A: Mutations are alterations occur inside the body naturally or induced . As a result of which , geneti...

Q: It is commonly said that industrial agriculture is a necessary evil, because of its role in the econ...

A: The food production is mainly associated with the world’s economic system. The scientific method rel...

Q: please answer every question based on the attached picture of the frog testis 1. what cell is being...

A: When the frogs are roughly two months old, the putative testis can be seen as a little oval object o...

Q: How does a neuron know which cell to form a synapse with?

A: The neuron is a cell present in the nervous system that is accountable for receiving and transmittin...

Q: At the end of Meiosis I, ) two diploid cells are produced. O four diploid cells are produced. two ha...

A: Meiosis is reduction division. In this process, 4 different haploid daughter cells are produced from...

Q: Could it be that lineage-restricted multipotent stem cells are derived from acNeoblast and seeded th...

A: In cell biology, functionally and structurally limited cells to behave in a differentiated manner ar...

Q: In what ways do the functions of the cytoskeleton differ from those of the endomembrane system?

A: Introduction: Cells are the fundamental unit of life. They are modified in different ways to carry o...

Q: Explain the role of redox reactions in electron transfer chains

A: The oxidation of reduced coenzymes into their oxidized forms is known as terminal oxidation because ...

Q: A number of techniques can separate proteins on the basis of their differences in mass. Describe the...

A: Most proteins move electrophoretically in alkaline running buffers because they contain a net negati...

Q: what are the reasons for the occurence of codominance and incomplete dominance traits?

A: Codominance is a term that refers to the link between two variants of a gene. Individuals inherit on...

Q: how parents pass characteristics hybrid a. on to their offspring b. Gregor Mendel differences in an ...

A: Genetics is branch of biology that is concerned with study of genes, their genetic variation, and he...

Q: 3. The indicator used for inclusive learning a) Olfactory indicator c) Universal indicator b) Synthe...

A: Introduction  Inclusive learning is the method of teaching which ensures the participation of all st...

Q: Avery, MacLeod and McCarty experiment discovered that DNA is the agent transforming the_ into virule...

A: Avery, Macleod and McCarty used a bacterium Pneumococcus which was used in previous experiment by Gr...

Q: Based on their anatomical and behavioral differences, biologists previously placed humans and chimpa...

A: The method of determining the nucleic acid sequence - the order of nucleotides in DNA – is known as ...

Q: This was one of Galileo’s observations?  A. Venus goes through phases B. Our sun orbits the center ...

A: Galileo's discoveries supported that the sun, not the earth, was the center of the universe.

Q: 1) Cross a homozygous dominant tall and homozygous round seed pea plant with a heterozygous tall and...

A: The Punnet square is a square diagram made out of four boxes arranged in a grid. Reginald C. Punnett...

Q: In Figure 4-6, why does the diagram not show meiosesin which two crossovers occur between the same t...

A: Crossing over is a process that takes place only and only between the chromosomes that are homologou...

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.