Mitosis and Meiosis:

Q: Viruses are cellular organisms. * True False An amino acid is an amphoteric molecule. True O False R...

A: Cell is the basic structural and functional unit of living organisms.Cell contains cytoplasm enclose...

Q: During the daylight, what might you observe in chloroplasts? O a. Increased rates of water productio...

A: Chloroplast is structure present in the plant as well as in green algae. This is a site of photosynt...

Q: Question:- 1. Brassica oleracea is the wild plant from which brussels sprouts, cabbage, broccoli, a...

A: Brassica oleracea is a wild plant species that are modified through artificial selection to produce ...

Q: Why does the Tasmanian devil immune system not fight off the foreign cells that cause Devil Facial T...

A: Tasmanian Devil Facial Tumor(TDFT) is a kind of cancer that is transmitted from the infected person ...

Q: Describe how neurons use neurotransmitters to communicate with each other and with the body.

A: Introduction  In multicellular organisms there is a specialised control and coordination between all...

Q: The bone remodeling is a continuous process of destroying the old bone and building a new one. The s...

A: Introduction Bone remodelling is a lifetime process in which the skeleton's mature bone tissue is el...

Q: In the Primula plant, the blue flower color is due to malvidin, a pigment encoded by the completely ...

A: Here, in Primula, malvidin pigment shows blue color flowers which is controlled by gene M.

Q: Which of the following is true of the FoF1 ATPase under normal cellular conditions? Select all that ...

A: The FoF1-ATPase enzyme is vital for cell energy reactions. The inner membrane of eukaryotic mitochon...

Q: QUESTION 2 The best definition of ectopic pregnancy is: O Pregnancy in which fertilization occurs in...

A: In case of normal pregnancy, the implantation of fertilized egg can be observed in the uterus, which...

Q: Non-disjunction of chromosome 21 during meiosis one followed by fertilization can result in all of t...

A: An zygote with nondisjunction has 3 duplicates of chromosome 21 rather than the usual two. A pair of...

Q: Once you have studied the wiggers diagram   Create your own outline of the steps with a brief explan...

A: Cardiac cycle:The cardiac cycle describes the human heart's activity from the start of one heartbeat...

Q: TRNA has peptidal transferase activity. 1 point True False Genetic information stored in mRNA 1 poin...

A: Q. tRNA has peptidal transferase activity. True False   Q.Genetic information stored in mRNA is tran...

Q: Name the state where never dividing cells of neurons and skeletal muscle present? * a) GO O b) G1 G2...

A: Mitosis is divided into four phases -  Prophase Metaphase Anaphase Telophase

Q: Which of the following is true of the FoF1 ATPase under normal cellular conditions? Select all that ...

A: Introduction The electron transport chain is a set of four protein complexes that link redox process...

Q: The human population was 6.0 billion in 1999 and has been growing ~ exponentially with an intrinsic ...

A: Introduction: A population is all the organisms of the same group or species, which live in a partic...

Q: The site of aerobic respiration in eukaryotic cells is a) Peroxisome b) Plastid c) Mitochondria O d)...

A: Aerobic respiration  It is defined as the process of cellular respiration that takes place in the pr...

Q: How can the concept of recombination frequency be used in genetic mapping?

A: It is the process of determining the location of genes on a chromosome that is called genetic mappin...

Q: The Maya were able to support a very large and complex society in Mesoamerica. (a) What was their ma...

A: Maize is the central food in the diet of Mesoamerica, along with other  vegetables like  such as bea...

Q: Cyanide toxicity results from its ability to inhibit cytochrome oxidase c, part of the ETC of cell r...

A: Introduction: Electron transport chain or system is the series of electron carriers, enzyme and cyto...

Q: Why is telomerase used by some eukaryotic cells but not prokaryotic cells? Clearly explain what the ...

A: a. Telomere is and end of a chromosome. They are only present in eukaryotes but not in prokaryotes b...

Q: List down and explain YOUR UNDERSTANDING regarding the 17 SUSTAINABLE DEVELOPMENT GOAL

A: Answer : 17 SUSTAINABLE DEVELOPMENT GOALS are :  1- no poverty : poverty is the main reason leading ...

Q: In the hawk-dove game, at what value of c do doves and hawks have equal payoffs when hawks are extre...

A: ANSWER;- In the hawk-dove game, doves and hawks have equal payoffs if c=0.  

Q: TRNA has peptidal transferase activity. True False Genetic information stored in mRNA is translated ...

A: A ribosome is a biological unit made up of Protein molecules and RNA that functions as the cell's pr...

Q: Which of the following best describes one of the differences between the olfactory receptor cells an...

A: D. The olfactory receptor cells send signals to the thalamus through one of two pathways, while the ...

Q: Bacterium Vesicle Phagocytosis Lysosome Macrophage Figure 3.12 A macrophage has phagocytized a poten...

A:

Q: For numbers 34-50. Given the following pedigree, answer the following questions. 1st generation woul...

A: A trait is a characteristic that is unique to a particular individual .  As per the question , trait...

Q: What is the theorized origin of these organelles and what is the name of the Scientific Theory that ...

A: Chloroplast are the site of photosynthesis in green plants. It consists of three layers which are ou...

Q: Explain the use of chick embryo cell culture in the production of vaccines

A: The cell-based vaccine manufacturing process that uses animal cells like Madin-Darby Canine Kidney, ...

Q: Population growth causes many environmental problems  Indicate some of these problems (2) What rol...

A: The rise in the number of people living in a certain area is known as population growth. Because pop...

Q: What is the clinical deficiency presented by hemophilic people? What is the genetic cause of that de...

A: Introduction Hemophilia:- The word hemophilia derives from two Greek words: haima, meaning blood, an...

Q: Question 1 From the list of strategies for dealing with harsh cold environments, choose those that a...

A: Ectotherms are cold-blooded animals whose body temperature fluctuates in response to their surroundi...

Q: An increase in lymphocytes may mean a problem associated with.   a. clotting   b. immunity   C. pulm...

A: Correct option : Immunity  Lymphocytes are the major components of the immune system. There are two ...

Q: (a) Describe the coevolutionary pattern that systematists look for (b) Name the evolutionary mechani...

A: Scientists in ecology and evolutionary biology frequently debate three types of coevolution: paired ...

Q: How are the chromosomes of prokaryotes different from eukaryotes?

A: Introduction: Chromosomes are the condensed form of chromatin present in the nucleus of the cells. T...

Q: Which of the following is true of the FoF1 ATPase under normal cellular conditions? Select all that ...

A: F0F1 ATPase is a membrane-bound enzyme that synthesises ATP from ADP and as well transports the prot...

Q: Restriction mapping of a linear piece of DNA reveals the following EcoRI restriction sites. EcoRI si...

A: Introduction By cleaving the internal covalent bonds between nucleotides, endonucleases breaks down ...

Q: scription that best describes the Da No MRNA can be degraded and resulting proteins will forever be ...

A: The nucleus is where pre-mRNA undergoes post-transcriptional changes such as capping, splicing, and ...

Q: QUESTION 4 Patients with 5 alpha reductase-deficiency undergo masculinization at puberty because: O ...

A: 5-alpha reductase deficiency can be referred to as a genetic disorder that impairs sexual developmen...

Q: Cytoskeleton - Microtubules: form the mitotic spindle and maintain cell shape. Nucleus Nuclear envel...

A: Cell is an tiny elemental unit of structural organization of the body . In this , various metabolic ...

Q: Condider the different functions listed in the first column of table 1 on the next two columns ident...

A: Living organisms can be classified into plants and animals. The basic difference between plants and ...

Q: At the end of the first photosystem, an electron leaves a chlorophyll molecule. This electron is rep...

A: Photosynthesis is the process by which chlorophyll containing organisms produce simple organic matte...

Q: covert the procedure to passive voice and past tense

A: UV Radiation can kill bacteria by penetrating their cell membranes and making them unstable which ev...

Q: 6. Which does not characterize the adolescence stage? a. Rapid mental development b. Ability to thin...

A: The questions belong to psychological aspect of an adolescent.

Q: You have 2 genes side by side on a chromosome, gene A and gene B. In your cell your RNASE enzyme tha...

A: mRNAs that are initially translated may later be temporarily translationally repressed. All mRNAs ar...

Q: In guinea pigs, the black coat (B) is dominant over the white coat (b), and straight hair (H) is dom...

A: The term heterozygous is associated with a condition in which different kinds of alleles associated ...

Q: If a component is heat sensitive, how might you conveniently achieve sterility of that medium? a. f...

A: Option A i.e. filtration

Q: Which of the following factors can help to increase contractile force? small load large muscle fiber...

A: Introduction Muscle contraction is defined as the tightening, shortening, or lengthening of muscles ...

Q: If a chimpanzee has a haploid (N) chromosome number of 24, how many chromosomes will be found in its...

A:   A chimpanzee has 24 pairs of chromosomes in diploid condition.  In haploid condition such as in ca...

Q: In a plant, green is dominant over white leaf; long is dominant over round shape. a. How many total ...

A: Alleles are the alternative forms of a gene that are located on the same locas of a homologous chrom...

Q: Plant breeders use colchicine to A) prevents cytokinesis in somatic cells B) increase the occurrence...

A: Colchicine is a chemical that is used by plant breeders to induce polyploidy in plants. Polyploidy i...

Oogenesis

The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase. 

Cell Division

Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons: