Which is the smallest? O A. a human red blood cell O B. an E. coli cell O C. the influenza virus O D. white blood cell

Q: 49. Phosphorus enters the biosphere through the process of ____________ which produces a…

A: Phosphorus is an essential chemical for both plants and animals. It is an essential component of DNA…

Q: Question 4. a) Besides making gametes, ovaries and testes are endocrine glands. What endocrine…

A: The testes and ovaries are endocrine glands. Ovaries secrete estrogens and progesterone Testes…

Q: Achondroplasia is caused by mutations in the Fibroblast growth factor receptor 3 gene. It is a…

A: Introduction :- Achondroplasia is caused by mutations in the FGFR3 gene. The FGFR3 gene codes for a…

Q: Involuntary muscle consisting of spindly shaped cells without striations is called: cardiac muscle.…

A: Involuntary muscles are those that do not move or contract under a person's conscious control, i.e.,…

Q: What type of mutation is depicted by the following sequences (shown as mRNA)? Wild type ....5′…

A: A mutation is a change in the DNA sequence of an organism. Mutations can result from errors, occurs…

Q: Lare a kind of stone tool only made by modern humans. These tools are made of small stone fragments…

A: Stone tools:  In the broadest definition, a stone tool is any instrument constructed totally or…

Q: What are some common problems in poultry farming? How can they be addressed?

A: Poultry farming may have the following but not limited to these problems: Poor technical management…

Q: PCR is a new molecular technique used for a variety of purposes. Which of the following statements…

A: PCR (polymers chain reaction) is widely use in molecular biology as well as in the study of genetic…

Q: Could the RNA polymerase used for transcription be used as the polymerase that makes the RNA primer…

A: RNA polymerase is a multi-unit enzyme that uses the transcription process to create RNA molecules…

Q: ex. Locate any woodland or forest area close to your home. Create a 10 x 10 m quadrat once you've…

A: We have to complete the task with the help of some techniques. Here some searches are required to…

Q: Why is it difficult to judge the scale of the problem of loss of species?   Most species that…

A: There are many species on earrh that are unknown. Deep ocean remain unexplored. Many bacteria ,…

Q: In walking through your well fertilized spinach field you look over at your neighbors spinach field…

A: Introduction Fertilizer is a substance that can be synthetic or natural in origin and is used to…

Q: Results from mutations in one of several genes involved in the production of thyroid hormones. O…

A: Transcription factors are the proteins that bind to a specific DNA sequence. These are the proteins…

Q: What is the Effect of Castration on Nervous System of the Mammalian Male

A: Introduction Castration is any surgical, pharmacological, or other procedure that causes an…

Q: This vessel carries oxygenated blood into the heart. O pulmonary artery O pulmonary vein vena cava O…

A: Aorta carries oxygenated blood to the body. Pulmonary artery carries deoxygenated blood from right…

Q: _is one of the earliest differences in the production of material culture, _ divides where…

A: During prehistoric times, members of homo erectus species had a lot of cultural differences.  These…

Q: Which of the following is not a trait on which natural selection can act? a size of ears b…

A: Theory of natural selection was given by Charles Darwin. According to this theory those individuals…

Q: What are muscle groups that work together for a common action or movement called? O Antagonistic…

A: Anatomical terminology are terms used to determine the action , position , size of muscle.…

Q: To define: Biogeography and briefly describe Wallace's biogeographic realms.

A: A biome is a large ecological network of flora and animals that stay in near proximity to a…

Q: Q12: E is not the correct answer, what is the correct answer Flatworm parenchyma cells that are stem…

A: Introduction Stem cells:- They serve as a repair system for the body because these are the cells…

Q: How do humans contribute to ocean acidification/decreasing ocean pH and what is the backfire of this…

A: Introduction :- The capture of carbon dioxide from the atmosphere causes ocean acidification, which…

Q: . Why are there fewer top predators in ecosystems than herbivores? give an example.

A: In an ecosystem, the energy flow occurs from one tropic level to another tropic level similar to a…

Q: PI3K is a cancer activating molecule because of what molecular function? It works to directly…

A: PI3K is normally engaged by being directly activated by the regulatory subunit linked to the active…

Q: To identify: The three levels of biological diversity.

A: Biodiversity refers to the variety of plants and animals that live in a given ecosystem. The members…

Q: Topic: Excretion in animals What are the different types or modes of excretion based on the type of…

A: Introduction :- The process of excretion is the removal of wastes and excess water from the body. It…

Q: _is the study of the process of what happens to biological remains after an organism dies. This is…

A: Stratigraphy is the study of arrangement of rocks in layers or strata. Primatology is the study of…

Q: In a population of 10000 people 49 have cystic fibrosis ( a genetic disorder). How many percent are…

A: A trait is a characteristic feature that is unique to particular individual . Inheritance pattern is…

Q: To determine: The way in which invasive species contributes to the biodiversity crisis.

A: The biological variety and variability of life on Earth is usually defined to stated as…

Q: Question 6. Describe a hypothetical fossil of a whale skull that would increase our knowledge of…

A: Janjucetus hunder is the species that have the small and the robust skull when compared to all the…

Q: Which structure is responsible for translating MRNA? O a. RNA Polymerase II O b. RNA polymerase I O…

A: Introduction Messenger ribonucleic acid (mRNA) is a single-stranded RNA molecule that corresponds to…

Q: Short Answer. 1. Predict what would happen to a peppered moth population . The light lichens on the…

A: Prey and predator species In an ecosystem variety of organisms live together with these all share…

Q: Predict the resulting DNA strand in the presence of a mutagen that causes the ADDITION of one…

A: During protein synthesis pathway, the N-terminus is the first component of the protein to leave the…

Q: List and define twenty branches of zoology including their etymology.

A: Introduction Zoology is the study of all living and extinct animals, including their anatomy,…

Q: Examine the pedigree which has X linked Dominant inheritance of disorder. Use letter X* (asterisk…

A:

Q: What do young herring gulls want when they peck the red spot on their parents' bills?

A: Pecking is a specialised behaviour in words suggesting that they need something. These birds are…

Q: The bones of your body that are rigid levers that allow movement are: long bones. sesamoid bones.…

A: Answer of first question :  Long bones      Answer of second question :  Photosynthesis

Q: Based on what you know about cells of the immune system and the material presented in Chapter 6,…

A: As per our company guideline we are supposed to answer only first question. KIndly repost other…

Q: You were given 1000 fruit flies to start a new laboratory colony. Before starting to breed your…

A: In genetic studies, the Hardy–Weinberg concept, also referred as the Hardy–Weinberg equilibrium,…

Q: Darwin utilized information from a variety of sources to support his theory of evolution. Which of…

A: Charles Darwin proposed the theory of evolution by natural selection. It was first formulated in his…

Q: To discuss: The ecosystem services of forests and describe the consequences of deforestation.

A: An ecosystem is a dynamic community made up of physical, chemical, and biological variables that…

Q: Which of the following mutations from question 2 could be restored to wildtype by adding CAMP as a…

A: Lac operon Lactose operon is a gene expression system found in E Coli. and many related bacteria. It…

Q: To determine: The reason why captive-breeding programs that reintroduce species into natural…

A: The difference between species is known as biodiversity (biological diversity). Biodiversity occurs…

Q: You were given flies, you decided to determine their genetic make up. You counted approximately 360…

A: Frequency of recombination = (Number of recombinant /total number of progeny ) * 100 Homozygous…

Q: Describe in detail the importance of tje new informqtion that is being applied in South African…

A: SAMS is provided freely to all schools. The aims of this are to assist schools with their own school…

Q: Small molecules binding to histone proteins also control gene expression by  chromatin remodelling…

A: Genes or DNA are generally coiled and held together by the help of structural proteins called…

Q: 4. Use the words presented in below to create a concept map illustrating the relationships among…

A: All these terms mentioned in the question, are related to the isolation, cultivation, and…

Q: In the presence of lactose and the presence of glucose the lac operon is not expressed Lacl is bound…

A: Introduction:- Lactose metabolism genes are found in the lac operon of E. coli. It is only expressed…

Q: To determine: The effect that would have on the nekton and benthos following the sudden…

A: Ecosystems are self-sustaining communities of living organisms that interact with their…

Q: What is mitochondria

A: In this question we have to describe about one of the most important organel of our cell which is…

Q: Spongy bone is found: in the periosteum in the ends of long bones O inside lacunae only in the fetal…

A:

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.