Match each material with its most suitable description. ___ limestone        a. extracted from kelps ___ chert                b. a dried red alga ___ alginates          c. rocky radiolarian remains ___ nori                 d. extracted from red algae ___ carrageenan    e. remains of foraminifera

Q: in cells, an enzyme catalyzes the reaction ab → a + b. it was isolated, however, as an enzyme that…

A: Enzyme catalysis is the use of a biological molecule called a "enzyme" to speed up a process. The…

Q: If a plant shows a symptom which could develop due to deficiency of more than one nutrient, how…

A: When a nutrient is deficient in a plant, it can manifest itself in a variety of ways. For example, a…

Q: The chemical and nervous control of the body occurs in ________________ by

A: The chemical and nervous control of the body occurs in :-

Q: 18. Which statement is TRUE about population? *       A. The population growth in an ecosystem must…

A: The organisms living in an environment is termed as a population. The population can range from a…

Q: How is respiration regulated?

A: Specifically, the respiratory rhythm centre, which is located in the medulla region of the brain, is…

Q: What are the assumptions made during the calculation of net gain of ATP?

A: Several assumptions are made in order to perform theoretical calculations on ATP molecules, the most…

Q: Name three possible factors contributing to early asymmetries in a developing embryo (i.e. what are…

A: FACTORS CONTRIBUTING TO EARLY ASYMMETRIES IN A DEVELOPING EMBRYO: Embryonic morphogenesis occurs…

Q: What are the factors affecting the rate of diffusion?

A: Diffusion is the process by which molecules are transported from higher concentration area to the…

Q: In mice, the wild-type coat color, agouti (AA) [left mouse], is dominant to solid-colored, black fur…

A: Some phenotypes are controlled by more than one genes and this is known as polygenic inheritance. In…

Q: Which are thought to have evolved first, aerobic bacteria or photosynthetic bacteria? Explain.

A: There are two main types of bacteria, aerobic and anaerobic. Aerobic bacteria need oxygen to…

Q: 6. A man with type AB blood is married to a woman with type 0 blood. They have 2 natural children…

A: The term "blood group" refers to any of the various classes within which human blood can be divided…

Q: The degree to which a given allele is expressed at the phenotype level 3 The allelic constitution of…

A: Mutations are sudden, heritable changes in the sequence of the DNA that alter the amino acid…

Q: Compare the function of megaspores and microspores in the seedplant life cycle, and explain where…

A: Spores formation is a asexual means of reproduction in which the sporulation occurs and when this…

Q: What do you understand by photoperiodism and vernalisation? Describe their significance.

A: Photoperiodism is the term used to describe the response of plants to the length of time that they…

Q: What interval of time does the Anthropocenerefer to?

A: The major events during the evolution and origin of life on the earth are divided into three eras.

Q: Some species, like bees, are haplodiploid: females are diploid and produced from fertilized eggs,…

A: Hymenopteran (ants, bees, wasps) social insect colonies are characterized with the aid of a variety…

Q: In Central America, it has been found that if natural forests are retained within and around coffee…

A: Win-Win situation It is a kind of situation when all parties are benefitted or are satisfied in some…

Q: Which of the following statements is correct regarding the experiments performed by Roger Payne? The…

A: * Roger Searle Payne is an American biologist and environmentalist famous for the discovery of whale…

Q: What percent of the energy stored at one trophic level is stored at the next trophic level? О 10% O…

A: The transferring of energy in the ecosystem can be studied by observing and analysing the energy…

Q: What, if anything, is wrong with the following statement: “When NaCl is dissolved in water, the…

A: Sodium chloride (NaCl), also known as salt, is one of the most abundant minerals on the planet and a…

Q: 1. You have a circular plasmid (PUC57), which consists of 2710 bp. What would the number and length…

A: If we cut a circular plasmid at 2 sites then 2 fragments would be generated. Similarly, for 3 cut…

Q: Question 5: Describe the role of liver, lungs and skin in excretion.

A: Furthermore, the liver, the lungs, and the skin all play an important role in the process of…

Q: Q9. Tabulate the anatomical differences between a monocot and a dicot root. Provide a Table title.…

A: All vascular plants are divided into monocots and dicots and  the classification is mainly based on…

Q: Compqre and contrast the two types of nucleic acids with respect to structure and function

A: Answer :- The two fundamental types of nucleic acids are DNA and RNA. Both DNA and RNA are produced…

Q: The population of rats in a field had a tremendous decrease because of the absence of snakes. *   A.…

A: A density-dependent limiting factor is a factor that limits population growth based on the density…

Q: Define RQ. What is its value for fats?

A: RQ stands for respiratory Quotient. It is the volume of carbon dioxide liberated over the volume of…

Q: Explain and distinguish between a hypothesis and a scientific theory as well as distinguish between…

A: A hypothesis is just an imagination that is not supported by any data. The hypothesis is also called…

Q: What is the site of gaseous exchange in an insect?

A: Introduction We will write about the site of gaseous exchange in an insect in bellow step.

Q: Why are food chains relatively short? O Not enough energy is transferred from one trophic level to…

A: Food chain are short and the main reason is the less energy available for higher level animals. The…

Q: How many different molecules composed of (a) two, (b) three, and (c) four amino acids, linked…

A: Proteins are the polypeptide chain of amino acids that are held together by the peptide bonds. These…

Q: Discuss what we know about both of the two main hypotheses (potential targets) for the origin of…

A: * Two hit hypothesis of schizophrenia says the combination of genetic susceptibility along with…

Q: During the Early _______________, life consisted of prokaryotic cells, but by the end of this…

A: The major evolution evens since the origin of the earth have been categorized into three major eras.

Q: Evidence exists that a catastrophic collision between Earth and a large extraterrestrial body…

A: Mass extinction is the extinction of a large number of species over a short duration of time due to…

Q: NADH will not change the Vmax for ADH but does increase the Km for the NAD+ substrate. What type of…

A: Enzymes are biological catalyst that perform specific chemical reaction with within body. They are…

Q: Briefly describe the distinguishing organisms and major biological events of the Ediacaran period…

A: Molecular systematics assists biologists in interpreting the fossil record in order to determine the…

Q: A fellow classmate is planning to study endocytosis at neuronal synapses for their senior thesis. He…

A: Endocytosis is described as a the process in which the cell membrane's flexibility helps them in…

Q: In pigs, the dominant C allele produces a curly tail. c/c homozygotes have straight tails. The…

A: In this question, we are given two genes, C and W which are present on the same chromosome. C gene…

Q: Austria and Luxembourg banned the import of genetically modified cotton seeds by Monsanto as they…

A: Genetic pollution or genetic contamination is the unintentional introduction of genetically…

Q: What are the characteristics of prokaryotic cells?

A: Prokaryotic cells are single celled microorganisms known to be the earliest on earth. Prokaryotes…

Q: What is the following specimen? Our invertebrate zoology professor told us there is a bryozoan on…

A: It is a Bryozoa which is commonly called as Moss animal, they are also called as Ectoprocta and…

Q: The seasonal migration of Salmon, beginning life in freshwater, migrating to oceans to grow, and…

A: ▪︎Many types of fishes  migrate on a regular basis, ranging from daily to annually or longer, and…

Q: Give an example of DNA and RNA with 15 nucleotides

A: * DNA is the  Deoxyribonucleic acid  contains genetic information and instructions for protein…

Q: The number and complexity of gene families linked with cell adhesion and cell signaling pathways has…

A: Introduction:- A gene is found mostly physical and functional unit of heredity. Gene are made by DNA…

Q: 28. In humans, red-green color blindness is a sexlinked recessive trait. If a man and a woman…

A: There are four types of inheritance of patterns of genetic disease: they are autosomal dominant,…

Q: On the planet RAMA, the DNA is of six nucleotide types: A,B,C,D,E,F. A and B are marzines, C and D…

A: A) DNA model of RAMAN DNA :  •The DNA model of RAMAN DNA consists of three strands of DNA connected…

Q: 1) Two STR loci were determined to have the following allele frequencies in the general population:…

A: RMP or Random match probability can be denoted as the probability that a person picked randomly from…

Q: 29. In the pedigree below, squares represent males and circles represent females. Individuals who…

A: Pedrigee analysis is the representation of presence of particular traits and how they are inherited…

Q: Suppose there were plants that had a high concentration of Chlorophyll-b, but lacked chlorophyll-a,…

A: Introduction In this question we will discuss why do plants have chlorophyll b and other accessory…

Q: Production of any sort of nitrogenous waste other than ammoniacosts energy. Name at least three…

A: Ammonia, uric acid, and urea are nitrogenous waste products.

Q: Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you…

A: Introduction In this question we will discuss why the colour of a leaf is kept in dark frequently…

Marine Evolution

Marine habitat is less explored, and hence, its biological diversity is far less known. The marine habitats are not constant due to their shifting nature, while the terrestrial habitats are more stable. Marine biology is the science that deals with the study of diverse marine species, their interactions, and behavioral characteristics.