Zhoukoudian Cave provides clear evidence that Group of answer choices A: Homo erectus ventured as far north as northern China by around 1mya. B: Homo erectus migrated to the Americas from Europe. C: Homo erectus practiced cannibalism.

Q: 45. Refer to the drawings in Figure 13.2 of a single pair of homologous chromosomes as they might ap...

A: In prophase I of meiosis, homologous chromosomes start pairing and cause the formation of synapses. ...

Q: QUESTION 1 Tigers are much more complex organisms than the single-celled Amoeba dubia, however tiger...

A: The genome size doesn't directly proportional to complexity or body size of an organism. 

Q: Suppose a mutation occurs in a cell such that normal Okazaki fragments were created during DNA repli...

A: DNA helicase, is an enzyme that separate double-stranded DNA into single strands allowing each stran...

Q: Homo erectus,

A:

Q: which one would be least likely to cause Liam’s disease?  Group of answer choices   A. Mutation 4 B....

A: Promoter: Is short nucleotides sequences located at 5'end that aid in switching on and off of a part...

Q: 1. If you have the dominant trait and one of your parents shows the recessive trait, what is your ge...

A: The phenotype of an individual is governed by the genotype. A genotype is a set of genes present in ...

Q: (c) State the main function of the following: (1) Chordae tendinae (ii) Lymphocytes (iii) Seminifero...

A: 1)Chordae tendinae-  Chordae attendee is present in The flaps of tricuspid and bicuspid valves. its ...

Q: 1 pt Structures as different as human arms, bat wings, and dolphin flippers contain many of the same...

A: INTRODUCTION Homologous structure The homologous structures are similar in construction but are modi...

Q: Which two scientists are synonymous with sterilization? O A. John Tyndall O B. Robert Bunsen O C. Mi...

A: * John Tyndall was a physicist from Ireland, who studied atmospheric conditions and climate change b...

Q: A cell has epinephrine receptors, yet is unable to respond to epinephrine signaling.  One possible r...

A: Epinephrine also known as Adrenaline is an hormone produced by adrenal gland. The signal pathway of ...

Q: Transmission of traits in a population and determines the extent of the environmenta effect to the a...

A: The transmission of alleles in the population is depends on different factors. The expression of all...

Q: a Cell SSRNA (viral genome) embrane dsDNA C Viral DNA. nucleus d Host DNA SSRNA e Hnct utnniaemir

A: Retrovirus enter their host cell and undergo process called reverse transcription . It is the format...

Q: Select ALL of the following that pepsin, trypsin, and chymotrypsin share in common: they all digest ...

A: All these enzymes helps in digestion play a important role in digestive system. 

Q: (1) The initial action potential would have the membrane be depolarized - which is due to the influx...

A: Note- as we are allowed to do one question at a time. I can provide answer to the first question onl...

Q: 11- One of the following is not a structural feature of neuron. A. Dendrites B. Node of Ranvier C. S...

A: Neurons are the structural and functional unit of nervous system. They are used to transmit impulse ...

Q: What phylum is this organism in?

A: Animals are classified into different phylums according to their characteristics. All animals belong...

Q: In rabbits, the length of the tail is governed by 3 sets of additive genes A B and C. The longest ta...

A: Given that, the tail length is governed by 3 sets of additive genes means total of 6 additive allele...

Q: describe the different biotic and abiotic factors in a grassland describe the ecological relationshi...

A: Grasslands are open areas of land where grasses or grasslike plants are the prevailing species. Tree...

Q: The role of ATP synthase is and it is located in O split glucose; cytosol of cells O shuttle pyruvat...

A: ATP synthase is an enzyme present in mitochondrial inner membrane. It catalyses the convertion of AT...

Q: Which correctly characterizes the difference between gram+ and gram- bacteria? Group of answer choic...

A: The gram+ and gram - are the two types of bacteria that are differentiated based on the gram stainin...

Q: Which describe the possible flow of energy in an ecosystem

A: *All living organisms in an ecosystem are related through food chains and food web that makes up  tr...

Q: 1. What specific purpose does the tube having substrate and distilled water serve? It's a controlled...

A: Experiment variables  An experiment have different variables which are any factor, trait or any cond...

Q: 1.What is the Purpose of SEPT ? 2.What is Sports Endurance Plank Test (SEPT)? 3. What are the Benefi...

A: Part 1. SEPT can be expanded as Sports Endurance Plank Test. The aim or the main purpose of this tes...

Q: Concept Check 3.1. Grey squirrels, Sciurus carolinensis, abound in upstate New York Contrary to thei...

A: Hardy-Weinberg Equilibrium is a concept that serves as a benchmark for researchers to analyze gene e...

Q: What is the difference between sequential and concerted assembly? Herpes viruses sequential assembly...

A: Flu Viruses (Influenza)   Flu infections have a place with the Orthomyxoviridae family and are named...

Q: What method is used to transfer plasmid DNA into bacteria? Group of answer choices heat shock treatm...

A: Plasmid  It is an extra chromosomal piece of DNA found is many of the prokaryotes.

Q: 41. The template strand of a gene has the sequence 3'-TCCCATGAG-5', Which of the following would be ...

A: Amino acids are the structural unit of proteins. there are majorly of 20 amino acids which are divid...

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: Which is an example of an evolutionary adaptation? Group of answer choices constancy in the rate of ...

A: Evolutionary adaptation is the adjustment of organisms to their environment in order to improve thei...

Q: Proofreads each nucleotide its template as soon as it is added to the growing strand. A) DNA Ligase ...

A: DNA is a genetic material that uses transcription and translation to transfer genetic information to...

Q: 7. Hereditary ichthyosis in humans is a sex-linked trait. If a normal male and a carrier female prod...

A: Inheritance pattern is a phenomenon which determines how traits are transferred from parental genera...

Q: 4. It is sex cell, a sperm or an egg. These have only one set of unpaired chromosomes. 5. One of a p...

A: Chromosomes These are defined as the thread-like structures that are present inside the nucleus of e...

Q: A person traveled to Asia and is having trouble with jet lag. What would be the best way to get used...

A: Answer Jet lag, also known as jet lag disorder, is a transitory sleep issue that can affect anybody ...

Q: Explain the reason behind the positive result in Benedict's test in leaves and roots of a plant.

A: Introduction:- Benedict's test is a chemical test that can be used to determine whether or not an an...

Q: Using the figure below, explain the Lamarckian evolution.

A: Lamarckian Evolution: Lamarckism is an evolutionary hypothesis based on the idea that physical chang...

Q: 1. Why is the specific base pairing is essential to the processes of transcription and translation? ...

A: Introduction Translation:- It is the process in which a cell makes proteins using the genetic inform...

Q: Explain the different properties of starch. You may site examples.

A: INTRODUCTION Starch is a type of carbohydrate, Its molecules are made up of large numbers of sugar m...

Q: The Lower Paleolithic period consists of the Oldowan and Mousterian stone tool traditions. Group of ...

A: Oldowan tools were used during the Lower Paleolithic period but the Mousterian stone tool traditions...

Q: Differentiate Classical Genetics and Molecular Genetics

A:

Q: Question 1 (1) Cells are highly complex and organized. (2) Cells are capable of producing more of th...

A: *NOTE: Kindly repost for other questions Dear Student as per the guidelines we are supposed to answe...

Q: STRUCTURAL SIMILIRATIES WITH OTHER ORGANISMS MILKFISH SALAMANDER SNAKE EAGLE POLAR BEAR

A: All these mammals have some basic characteristics in common. 

Q: Question 1. How does the molecular structure of a keratin filament increase the tensile strength of ...

A: * Alpha keratin is a type of keratin found in vertebrates as this is the component in hairs and horn...

Q: What best describes the hind leg bones seen in the whale? Leg bone O Vestigial structures that had a...

A: INTRODUCTION Vestigial structure This is anatomical structures which has no longer purpose in the cu...

Q: What is the phenotypic ratio produced by the cross at after birth? a. 3:0 b.3:1 c. 1:2:1 d.all alik...

A: Short spine is caused by a new lethal gene in homozygous condition that leads to shortness of the sp...

Q: 1. COMPARE AND CONTRAST the GEL FILTRATION and ISOELCTRIC PRECIPITATION in terms of the principles g...

A: Compare and contrast the gel filtration and isoelectric precipitation in terms of the principles gov...

Q: Which taxon is classified with the presence of club shaped structures that contain the reproductive ...

A: During the reproductive phase, fungi produce spores are produced via asexual or sexual reproduction....

Q: Which of the following components is involved in the initiation of transcription? Group of answer ch...

A: Reply and Explanation: 1   Record begins when a record factor ties to the advertiser alongside a RNA...

Q: 47- Damage of motor neuron cortices on the left side of brain will cause: a- Left flexor muscles to ...

A: Introduction: The cerebral cortex of the brain has three regions of function, namely Sensory, motor ...

Q: Which of the following plant-like protists exhibits behavior of both plants and animals? Group of an...

A: Protists are single celled eukaryotic organisms. They are mostly aquatic organisms and have diverse ...

Q: 21. The binding of aspartate to different subunits of ATPase is an example of a. Negative cooperativ...

A: Introduction :- A homotropic allosteric modulator is both a substrate and a regulatory molecule for ...

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: