Volcanic ash can be used to date fossil finds because each time it is expelled by an eruption it has the same relative proportions of radioactive isotopes. True or False

Q: how does each of these factors influences the variation in the geographic distribution of species. ...

A:   INTRODUCTION    The individual species may isolate directly from each population ecology. Many spe...

Q: Please briefly explain the ATP_modulated actomyosih cycle.

A: Every myosin motor protein has ATPase activity and works in a periodic fashion, with ATP binding and...

Q: The table below shows taxonomic information for the gray wolf and four other species. Gray Wolf Spec...

A: D. 123

Q: Animals attract mates through a variety of behaviors. Diurnal animals tend to rely on visual cues, w...

A: Endocrine disruptors, also known as hormonally active agents, endocrine disruptive chemicals, or end...

Q: O biolistics

A:

Q: In cattle "short spine" is lethal shortly after birth: it is caused by the homozygous recessive geno...

A: "Genetics" is the study of the functioning and main codes of variation and heredity. Inheritance is ...

Q: elicited by the Coronavirus. Instruction: Differentiate the two: Antigen vs Immunogen.   1. What ...

A: Answer :: Antigen vs immunogen 1)   The CO stands for corona, VI for virus, and D for disease. Forme...

Q: The siRNA and miRNA pathways share many similarities and also have some differences. Which of the fo...

A: The gene regulation by using small single standard RNA is mediated by the functioning of siRNA and m...

Q: Based on the data in the table below, determine whether mutualism will evolve in Species 1 and Speci...

A: * Mutualism an interaction between two species in which both species will get benifits. *Examples ar...

Q: 1. Which pair of animals in numbers 1-3 belongs to a common ancestral group? Explain your answer. 2...

A: Evolution is process of development of plants and animals over thousands of year from simple to adva...

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: A eukaryotic gene is added to a mixture containing a restriction enzyme EcoRI and a bacterial plasmi...

A: The EcoRI restriction site is present in tetracycline resistance gene. This meand that while ligatin...

Q: The pericardial cavity is a part of which cavity? pelvic cavity abdominal cavity pleural cavity tho...

A: 4. Thoracic cavity

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: 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 ...

Q: Within the flippase family is the flippase protein that works in the golgi and the scramblase protei...

A: * Flippase and scramblase are main enzymes that can change the phospholipid positions in cell membra...

Q: plant uses 54 ATP to build one glucose molecule, but only gets 36 ATP when it breaks the sugar down ...

A: Introduction:- ATP (adenosine triphosphate) is an energy-carrying molecule found in all living creat...

Q: explain the two major stages of photosynthesis (light dependent and independent reactions).

A: There are two major stages of photosynthesis, The light reaction  The dark reaction. The light rea...

Q: If you were asked to choose one of the following invertebrate as a pet (protozoa, sponges, and placo...

A: Protozoans *protozoans are single celled eukaryotes that lives free living or parasitic means that t...

Q: A protein uses a gene template in 3' to 5' direction. What are the amino acid sequences following th...

A: The protein is synthesized from mRNA by the process of translation. It takes place in cytoplasm of c...

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: (a) Name the following : (i) The type of cell division which occurs in the cells of the reproductive...

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and s...

Q: need help with this questions just 2-3 sentences please. In the Ti-plasmid in Agrobacterium tumefaci...

A: Ti-plasmid in Agrobacterium tumefaciens contains a gene that encodes octopine synthase. This gene ca...

Q: A mess of 40 iguanas moved to a new island which is so large that the carrying capacity is essential...

A: Total 40 iguanas moved to a new island  Growth rate = 0.6 = 60%  Generation time = 2 years  Total ti...

Q: Can you consider a living thing that does not seem to interact with other living things as a compone...

A: Ecosystem It is defined as a geographical region where plants, animals, other species, weather, etc ...

Q: What is the Rh factor?

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

Q: what are plant habits? what are the types of plant habits?

A: Plant Kingdom is a kingdom which consists of autotrophic photosynthetic organisms that is plants . I...

Q: II. Write the letter of the correct answer. Choices for 1-10: A. intracellular fluid B. extracellula...

A: 1. Interstitial fluid  is the body fluid between blood vessels and cells, containing nutrients from ...

Q: MODELLING HUMAN MITOISIS ACTIVITY In SOMATIC CELLS INTERPHASE (G,> s G,) Cell membrane • Nuclear mem...

A: During interphase, the cell grows and the nuclear DNA is duplicated

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: Castrated boar will help to detect which sows are in heat? True or False

A: Introduction Castration is the removal or inactivation of the testicles of a male animal and Castrat...

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: Which bacterium does not have gelatinase enzymes O A. Staphylococcus aureus B. Bacillus subtilis O C...

A: Gelatin hydrolysis test is used to identify the bacteria which can digest or degrade the gelatin by ...

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: A culture of a certain bacterium grows according to the law of exponential growth. If there were 130...

A: The exponential period of expansion is a form of balanced growth in which all cells/bacteria divide ...

Q: The number of bacteria in a sample can also be quantified with other techniques, such as examination...

A: In microbiology laboratories the number of microorganisms present in a particular sample is determin...

Q: 60 2400 50 2000 1600 1200 20 800 10 400 1 4 Generations - Wolf population Elk population Number of w...

A: Predator- prey relationship is very useful to maintain the ecosystem.  In this relationship, one spe...

Q: 4. Do some Internet research to learn about the founders of both Xhale and Vestagen. To what degree ...

A: Answer 

Q: 2. Examine the phylogeny below, which is the phylogeny for all extant species from a genus of birds,...

A: Phylogeny for extant species refers to the evolution history of a group of species that are living a...

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: 4. Cross a yellow parakeet (bbYy) with a white parakeet. What is the genotype of and phenotype of th...

A: * Given that yellow parakeet has genotype bbYy . * So the white parakeet genotype will be BBYy. *The...

Q: SPECIMEN   LEAF MODIFICATION SPECIALIZED FUNCTION   Allium cepa Leaf base: Leaf stalk: Shape of leav...

A: Allium cepa It is commonly known as an onion or bulb onion. It is a vegetable and is the most cultiv...

Q: In corn, kernel color is governed by a dominant allele for white color (A) and by a recessive allele...

A: Given data: Frequency of heterozygous genotypes?  Total kernels= 152 Tatal white kernels (homozygous...

Q: Write an introduction of the isolation and purification of bacteriophage with host Escherichia coli

A:

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...

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: Question 10. Why does the sarcomere length appear to shorten (from Z line to Z line) when a muscle c...

A: The striations on muscles are formed due to a pile of sarcomeres. It encompasses the basic structure...

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: Activity 7.2: Directions: Complete the diagram by filling up the words from the box. Energy Flow Ino...

A: Ecosystems require a constant supply of energy to power biological processes and replenish energy lo...

Q: In which cell would you expect to find the most Golgi bodies? a. Cardiac muscle b. Epithelia cells c...

A: Introduction Golgi body:- A Golgi body, also known as a Golgi apparatus, is a cell organelle which i...