What is the function of xylem vessels? A. composed of dead lignified cells connected end to end B. allows the transport of water and minerals in the upward direction

Q: Gibbons are knuckle-walkers when on the ground. True or False

A:

Q: Question:- The speckled warbler is a small, declining, woodland bird that is restricted to intact f...

A: An ecosystem is a natural community of living beings that deals with the external environment and ot...

Q: Small, monomeric G-proteins differ from trimeric G-proteins in that monomeric G- proteins .. a) are ...

A: Receptor tyrosine kinase is a cell surface receptor-mediated by enzyme kinases. Receptor tyrosine ki...

Q: Centrioles at opposite end of cell Spindle fibres attached to centromeres 46 double stranded chromos...

A: Metaphase - is the stage of cell cycle where condensation of chromosomes occurs. This is the stage o...

Q: . at higher doses the animal becomes satiated   b. at higher doses there may be toxic or adverse ...

A: Drug can be either beneficial that is serves the cause of trial or is a failure.

Q: What happens when p53 senses that DNA damage is beyond repair? Why is this advantageous?

A: Introduction: Tumor suppressor genes encode the proteins that prevent the cell to progress through t...

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: How do fossils support evolution? Group of answer choices The fossil record provides evidence that a...

A: The fossils are the preserved structures of organisms in the sedimentary rocks. The sedimentary rock...

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: Neurons and macroglia are similar in that they develop from _______, whereas microglia develop from ...

A: The nervous system is made up of neurons, specialized cells that can receive and transmit chemical o...

Q: Who is the French biologist best known for the Theory of Acquired Inheritance? Group of answer choic...

A: Answer is Jeans Baptiste de Lamarck

Q: Which sigma factor is activated in the stationary phase? O A. RpoN O B. RpoE O C. RpoH O D. Rpos O E...

A:

Q: 41) In a bacterial cross in which the donor (Hfr) is a+b+ and the recipient strain (F-) is a-b-, it ...

A: D) Will all be a+b+ Explain;- The formation can be characterized as the course of transmission of qu...

Q: ch as the heart beating and consuming oxygen. at 52.5 ml/kg/min. How many METS is she working at? Fg...

A: 37..The  statement is false  Resting metabolic rate is the amount of energy present at rest. BMR- ba...

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: In which of the following cases would treating a patient with an antiserum (purified antibodies) be ...

A: The administration of anti serum also called as antitoxin or purified antibodies is a form of passiv...

Q: Chromosomes are visible under microscope during cell division because a. Thickening of chromatins b....

A: Correct option is a.Thickening of chromatins    The nucleoli vanish, and the chromatin fibres thicke...

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: 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: How does Physical Activity develop the four aspects of a human? (Aerobic Fitness, Muscular Fitness, ...

A: All movement is referred to as physical activity. Walking, cycling, wheeling, sports, active recreat...

Q: The only primates with prehensile tails are New World Monkeys. True or False

A: New world monkeys are called Platyrrhini. New world monkeys diverged from old world monkeys (Catarrh...

Q: Neuroglial cells:

A:

Q: Scientists currently believe that the _ most likely describes the pattern of evolution of modern hum...

A: Evolution  Evolution is the change in the trait or character of an organism in order to survive and ...

Q: Which category of classification has the largest variety of organisms? Group of answer choices class...

A: Classification is a way in taxonomy to classify organisms depending upon their charechterstics.  Cla...

Q: Why is it important to determine the blood types of the donor and the recipient in transfusions?

A:      INTRODUCTION        The Blood group system is mainly important in humans . Blood types are main...

Q: 15. Final Synthesis. Describe how a cell that is FIXED can be used to estimate the time spent in the...

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

Q: The action potential is split into 4 parts (A-D). For each part, 1. Describe what stimulated the cha...

A: Action potential - It is defined as a sudden temporary shift of rising or falling in membrane potent...

Q: Choose the manipulation most likely to disrupt the complex behaviors of earthworms. Destruction of ...

A: Some earthworms exhibit complex behaviors, such as burrowing and mate selection. These behaviors are...

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: The Coulter counter works on the following principle: O A. the increasing current is indirectly prop...

A: Coulter Counter Principle: - It is based on the principle that electrical resistance of a conducting...

Q: Two genes can be right next to each other on a chromosome but get trån rates and times because it de...

A: All organisms are composed of numerous cells. Cells are the functional and the structural units of t...

Q: Which microorganism does not contain superoxide dismutase enzymes?

A:     Superoxide dismutase (SOD) is an enzyme found altogether in living cells. An enzyme could be a s...

Q: What process must be completed before a cell begins the process of division? O The somatic cell must...

A: Introduction :-   Cell division results in the formation of new cells. A single cell divides to prod...

Q: D E -E ET

A: Rats share many common similarities with humans and they both are mammals. This is the reason most o...

Q: antibiotics

A: Microbes are organisms that are too small to be seen without using a microscope, so they include thi...

Q: (c) State the main function of the following:

A: Tissue is a gathering of cells that have similar design and that work all together. A nonliving mate...

Q: The diversity of the response of TGF- B proteins in different cell types.

A: The diversity of the response of TGF-B proteins in different cell types. Introduction: TGF-β is a ve...

Q: Describe the phases of mitosis

A: There are four phases in the mitotic cell division. They are - prophase, metaphase, anaphase and tel...

Q: Two related species of salamanders were found living on opposite sides of a mountain. One species li...

A: Species It refers to the most diverse collection of species in which individuals of the right mating...

Q: What makes up a malignant tumor/benign tumor. Compare and contrast

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Q: For 11-15. Modified True or False. Write True if the statement is true. If false identify the word t...

A: Tonic control is exerted by autonomic nervous system. This control the activity of other organs and ...

Q: Three fruit shapes are recognized in the summer squash (Cucurbita pepo): disk-shaped, elongated, and...

A: Genes are the hereditary units of life. The inheritance pattern was introduced by Gregor Mendel, aft...

Q: Which of the following would be found inside a bacterial cel? inclusion Onucleiod Ofagella cytoplasm...

A: Bacteria is the single celled microorganisms with prokaryotic cell have no nucleus and other membran...

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: Which of the following blood types is possible if the parents are Type A (genotype AO) and Type B (g...

A: Introduction :- The presence and absence of antibodies and hereditary antigenic compounds on the sur...

Q: Give the NADH, ATP and FADH production from each part of photosynthesis?

A: "Answer: Plants being living creatures also need food for their survival and by the use of sunlight ...

Q: Keystone Species Microbiome Diversity Plant Diversity

A: The foundation(establishment) (1) or misfortune (loss) (2) of a cornerstone animal varieties (number...

Q: Which of the following terms refers to changes during developments to serve a specific function? O d...

A: Introduction :- Morphogenesis is a biological process that controls the spatial distribution of cell...

Q: To discuss: The value of genome projects.

A: Recombinant DNA technology (rDNA technology) is extremely useful for analyzing a species' entire gen...

Q: Q8: Which of the following hominins has the most shared-derived traits with modern humans? A: Homo h...

A: Hominins These are any member of the family Hominidae and order Primates.  Of this family, only one ...

Tissue renewal

In multicellular organisms, tissue is a level of structure that consists of a group of physically and functionally identical cells and their intercellular substances. Unicellular organisms do not have tissues. Tissues are absent or poorly differentiated even in the simplest multicellular animals, such as sponges. However, more evolved multicellular animals and plants have specialized tissues that may organize and govern an organism's reaction to its surroundings. The word tissue is derived from the Latin word 'weave.' Plants and animals have various kinds of tissue systems that differ in their work and composition according to the different requirements.