Orrorin tugenesis was bipedal because it left footprints that showed it had an arch to its foot like modern humans. True or False

Q: Which of the following accurately describes the structure of the DNA molecule? contains four bases a...

A: Introduction :- DNA is the molecular name for the molecule in all living things that conveys genetic...

Q: For the plants the mutualism is obligate, but for the birds it is a facultative relationship Most of...

A: New study reveals that on the Hawaiian island of Oahu, where native birds have been completely suppl...

Q: Name one respiratory structure unique and special to each of the following vertebrate animal. Briefl...

A: Cartilaginous fish Notwithstanding breath, in teleosts fish , the respiratory framework has differen...

Q: What is the Rh factor?

A: Introduction In this question we will discuss about the Rh factor.  

Q: Define the transcription unit. How does it differ from the gene? Describe how you would determine th...

A: Succession of nucleotides in DNA that codes for a solitary RNA particle, alongside the arrangements ...

Q: The following graph shows the trends in bacteria and viruses after they infect an organism. A B Time...

A: "Microbes on the Move" includes a personal narrative story as well as a few other short stories abou...

Q: Why do we need to adapt to the ever-changing situation in our environment?

A: Our environment is ever-changing as the biotic or abiotic factors fluctuate seasonally as well as su...

Q: A strain of E.coli harbors a temperature sensitive mutation where cultivation of the bacterium at lo...

A: Here the correct Statement would be MOMP  accumulation in the outer membrane will be high , MOMP is ...

Q: (c) State the main function of the following: (i) Chordae tendinae (ii) Lymphocytes (iii) Seminifero...

A: A cell is the smallest unit of life. It is divided into two types: prokaryotic and eukaryotic. A cel...

Q: The next four questions refer to a case study of an influenza infection in an example individual.  T...

A: Influenza is the infection caused by virus. The major symptoms of influenza are - fatigue, muscle ac...

Q: In snapdragons, flower color shows incomplete dominance.  Plant height (tall or short) is a standard...

A: Introduction: Incomplete dominance is a form of intermediate inheritance in which one allele for a s...

Q: In an isometric contraction the muscle develops tension but does not - exhibit elasticity does not e...

A: * there are three types of muscle contractions present  are:  Concentric  Eccentric Isometric Conc...

Q: Which observation is NOT an evidence for Darwin's theory of common descent? Group of answer choices ...

A: Darwinism is a biological advancement that is created by the English naturalist Charles Darwin and o...

Q: Hydrophobic signal molecules typically . a) bind to receptor proteins in the cytosol. O b) bind to p...

A: 1st answer is (e) 2nd answer is (e) 

Q: A heterozygous brown bull mates with a white cow (brown is the dominant trait). What are the expecte...

A: Introduction: A monohybrid cross is a genetic collaboration of two different alleles which has homoz...

Q: Explain in detail what this picture shows which part? Bronchus

A: Structure * Bronchus are passageways to  lungs. The first bronchi is in trachea at right and left ma...

Q: Which of the following processes includes the removal of introns in the primary RNA transcripts? O p...

A: Introns are noncoding sequences of an RNA transcript or the DNA encoding it. In simple terms, intron...

Q: It is the normal and most common trait in a natural environment. O wild-type O mutant O recessive

A: All living and non-living things that occur naturally, that is, not artificially, are included in th...

Q: Enzyme(s) associated with the cytosolic face of the plasma membrane directly activated by G-proteins...

A: GPCRs are the largest and most diverse groups of membrane receptors. They convert extracellular sign...

Q: What is the estimated size of the specimen under a 10x10 ocular micrometer under HPO? (Take note: sp...

A: The specimen size can be calculated by using the number of ocular units occupied by it. Here simply ...

Q: 2. An experiment was conducted to explore the effects of fatigue on the performance of a simple manu...

A: a) u0 (mu): For the population of all college male students, it is the population mean of the differ...

Q: Which of these innate defenses would be most inhibited by antibiotic use? Group of answer choices Mu...

A: Innate immunity is the one that is present since birth. It helps in protection against all antigens.

Q: Number the stages of meiosis from 1 to 8 to show their correct chronological sequence. 1 [Choose ] [...

A: Meiosis is a two stepped process. It produces haploid gametes from diploid parent cell. 

Q: In chickens Cis dominent to to c.C alters development to produce crooked shert legs end winge Creepe...

A: A dominant allele expresses itself by masking the expression of another gene (recessive). It is ment...

Q: Hereditary ichthyosis in humans is a sex-linked trait.  If a normal male and a carrier female produc...

A: Sex-linked traits mean that the disease-causing allele is present on the "X" chromosomes. In humans,...

Q: EXPLAIN why it is false. The only way to open an initial channel on a cell is to give it a ligand/si...

A: The only way to open an initial channel on a cell is to give it a ligand / signal. Correct Answer: ...

Q: hat are two common defects related to cell division that cause cancer

A: One of main defect is mutation for cancerous cells that can result in the cell becoming overwhelmed ...

Q: than ventricular pressure while semilunar valves are open ventricular pressure is greater than atria...

A: 1.Ventricular pressure surpasses arterial pressure as the ventricles contract, the semilunar valves ...

Q: n cattle, “short spine” is lethal shortly after birth; it is caused by the homozygous recessive geno...

A: There are few points that should be kept in mind: Each diploid has two alleles for a trait : Homozy...

Q: What is the MN blood system? What is the pattern of genetic inheritance of the MN blood system?

A: Besides the ABO and Rh blood systems, there is a third system of blood antigens known as the MN bloo...

Q: 1. The function of follicle stimulating hormone is to stimulate the development of Corpus luteum   ...

A: There are few important points :  The reproductive system consist of primary sex organs, secondary ...

Q: Which of the following is NOT a function of structural proteins? O a. Initiate fusion with the cell ...

A: Viruses are microscopic, acellular, organisms that form an intermediate group between living and non...

Q: vast majority of lorises are found in:

A: Loris is the common name for the strepsirrhine mammals of the subfamily Lorinae in the family Lorisi...

Q: Describe what a core promoter in and the different types. Describe the motifs that could be found in...

A: Promoters are DNA sequence required to turn off gene or turn on gene.  Promoters are of three types-...

Q: I need help with 8-9

A: Male has XY chromosomes & females have XX chromosomes. While fertilization, zygote gets one chro...

Q: Using the information on the box provided, which of the following statements is true? First Generati...

A: Hardy Weinberg equilibrium states that allele frequencies in a population remain constant from one g...

Q: 2. Imagine that you have given blood, but a sample of your red blood cells is accidentally stored in...

A: Red blood cells mean RBCs are responsible for the red color of blood.RBC is placed in saline water b...

Q: what the downward and upward slopes in the graphs indicate about the contractile vacuole?

A: The contractile vacuole gathers and pumps out excess water as it accumulates in the cell.

Q: Write testable hypothesis regarding how the quality of light (varying in wavelengths) and may affect...

A: Introduction: Photosynthesis is the process of preparing food in the presence of sunlight and chloro...

Q: How did Cholera—A Victory for Public Health Research pandemic ends?

A: Cholera is caused by bacterium Vibrio cholerae. 

Q: The Vendija rockshelter and Krapina cave in Croatia contained ... Group of answer choices A: evidenc...

A: The Vendija rockshelter and Krapina cave in Croatia are important archaeological sites. Many fossils...

Q: Name ONE automated cell counter and describe its working principles

A: Cell counters that count cells automatically are known as automated cell counters. The sample is fed...

Q: 1. An individual whose genotype is AABBCC is crossed with an individual who is heterozygous for all ...

A: Given that, the genotype AABbCc is crossed with an heterozygous individual (AaBbCc). But you have as...

Q: 11: All of the following are features associated with the earliest members of the genus Homo (e.g., ...

A: Features associated with Homo habilis except-

Q: Briefly explain how each demographic parameter can affect a population. This can be in terms of popu...

A: Population is a reproductively interactive group of animals of a single species. A few individuals m...

Q: Prevention of genetic abnormalities by reducing the number of chromosomes in a cell by half. meiosis...

A: Cell Cycle:  A cell cycle is a set of events that occur in a cell as it divides and grows. A cell sp...

Q: Synapsis and crossing over [Choose ] [Choose] Prophase II Telophase II Prophase I Telophase I Spindl...

A: Synapsis & crossing over - Prophase 1. Spindle form - Prophase 2. Chromosome decondensed - Telop...

Q: Deodorant Phenyl will not kill which microorganism? O A. Plesiomonas O B. Treponema O C. Klebsiella ...

A: The deodorant phenyl is designed to kill bacteria (usually odor-making bacteria) as well as provide ...

Q: How is blood typing for the ABO system and the Rh usually done?

A: In this question we will discuss about how is  blood typing for the ABO system and the Rh usually do...

Human Evolution

Human evolution is the process of evolution of humans from early man to anatomically modern humans. The process of evolution in humans leads to the gradual development of traits like bipedalism. Humans are the highly social animals that make them the most advanced animal on Earth.  Human evolution is an outcome of interaction among the following processes: