What is an advantage of a fi sh’s gills for breathing in water and a disadvantage for breathing on land?

Q: A hormone released from the anterior pituitary is a. glucagon. b. growth hormone (GH). c. melatonin....

A: Hormones are the molecules that are secreted by the glands present in the body whenever the need ari...

Q: In the early 1900s, cities such as Philadelphia reduced the incidence of typhoid fever by:   Questi...

A: Typhoid fever is caused by Salmonella typhi. It starts with infection in the intestinal tract and ma...

Q: Which organisms came and went during the Mesozoic era?

A: MESOZOIC ERA:- It is the era when the conifers, reptiles, dinosaurs were present in plenty of number...

Q: 1.Circle and identify allfunction groups found in a sugar called “aldose” depicted below. Do NOT use...

A: RCHO - It is known as aldehyde group. ROH - it is known as alcohol group. Here R is alkyl group.

Q: What causes heart sounds?

A: BASIC INFORMATION  HEART  It is a muscular organ  It is present in a space in between the lungs c...

Q: Describe the chemical composition of lysosomal membrane in detail.

A: Lysosomes are the organelles that are involved in engulfing the antigens and worn-out cells and disr...

Q: Need help

A: Cells are the smallest functional and structural unit of all organisms. All cells have a cell membra...

Q: The round pea seed trait is dominant over the wrinkled pea seed trait. If the phenotype of a pea see...

A: Gregor Johann Mendel performed monohybrid and dihybrid crosses in pea plant. He is more popularly kn...

Q: What must be true for a male individual to be a carrier of a Y-linked recessive allele? A. The gene...

A: In the recent decade, various genes are found to be associated with a Y chromosome. These genes are ...

Q: Energy in Organisms In mochonaria In Chlaropiast ATP ADP PHOTOSYNTHESIS CELLULAR KESPIRATION Bond is...

A: Photosynthesis is defined as the process by which green plants (autotrophs) and certain other organi...

Q: What may not be a reason for the evolution of heart valves from ball and cage to bi-/trivalve design...

A: The cardiovascular system consists of the heart and the blood vessels. The heart is the pumping orga...

Q: The five stages of the bacteriophage lytic cycle occur in this order:a. penetration, attachment, rel...

A: A virus is a submicroscopic organism which contains genetic information either in the form of DNA (D...

Q: Write a paragraph about the disease caused by the tuberculosis bacillus

A: Tuberculosis is a very contagious infection it mainly attacks in lungs.It can also spread into vario...

Q: Echinoderms have _____ symmetry as embryos and _____ symmetry as adults. a. radial; radial c. bilate...

A: The group of eukaryotic, multicellular, and heterotrophic organisms is classified under the kingdom ...

Q: Distinguish between biliverdin and bilirubin.

A: It is synthesized in the liver and stored in the gallbladder. They are the oxidation products of cho...

Q: In cats, black fur color is caused by an X-linked allele; the other allele at this locus causes oran...

A: The question is related to X chromosome inactivation in mammalian females. One of the X chromosomes ...

Q: Summarize the major events that occur during mitosis andcytokinesis

A: Step 1 Mitosis is a mode of cell division in which the daughter cells are genetically similar to the...

Q: Describe aging-related changes in the digestive system.

A: The digestive system is a part of the metabolic system. In old age, the metabolic rate is reduced du...

Q: Distinguish between the functions of neurons andneuroglia.

A: Distinguish between

Q: I need help

A: Peer review is the most crucial process in finding the credibility of the research. It is a common p...

Q: The passive process of moving carbohydrates throughout a plant is calleda. transpiration.b. transloc...

A: The carbohydrate is the substance that is synthesized by the leaves or other green components of the...

Q: When the Ascomycetes fungus reproduces sexually, mating type A fungi cross fertilize mating type a f...

A: Fungi are heterotrophic, filamentous, and generally multi-celled organisms that inhabit a wide range...

Q: Chemical composition of nuclear membrane.

A: The nucleus is the central structure of eukaryotes. It is made up of proteins and DNA. Its membranes...

Q: Biochemical oxygen demand (BOD) is a measure of the:   Question 4 options:   A)  n...

A: BOD gives us an overall idea of the health of the water body by measuring certain parameters such as...

Q: List the two main functions of the spinal cord.

A: The nervous system is a complex system of nerves and specialized cells known as neurons. The nervous...

Q: Gregor Mendel proposed the law of independent assortment based on the observation that dihybrid cros...

A: Gregor Mendel is considered the “Father Of Genetics” due to his contribution to this field. He worke...

Q: Concisely describe five steps that occur between the arrival of an action potential at the axon term...

A: Nervous framework, coordinated gathering of cells particular for the conduction of electrochemical b...

Q: Describe how sieve-tube elements and companion cells worktogether to form a transport system.

A: Phloem can be defined as the living tissue in vascular plants that plays the role in the transportat...

Q: Calculate the total energetics involved in the complete beta-oxidation of one mole of 19C fatty acid...

A: Oxidation of a fatty acid occurs by the beta-oxidation process. It is a catabolic reaction. In the p...

Q: What is usually present in blood droplets expelled during coughing or breathing?

A: Blood is a fluid connective tissue. It is the softest connective tissue.  Blood divides into two par...

Q: Viruses are known to infecta. plants.b. bacteria.c. fungid. all organisms.

A: The small microscopic and unicellular organisms are called microorganisms. There are many types of m...

Q: Explain the Retroviral vectors of Gene Therapy ?

A: Retrovirus is used to infect the mammalian cells as they used host cells to multiply. Retrovirus is ...

Q: phases of the cell cycle startıng Interphase? Phases of the Cell Division Cycle а. 4, 1, 2, 3, 6, 5 ...

A: Mitosis is a type of cell division by which the different body cells are made. It results in the gen...

Q: Most sea anemones are sessile animals . what do biologist mean when they say that a sea anemone move...

A: Sea anemones are marine-living, flower-like animals that belong to the phylum of Cnidarians. About 1...

Q: Are you able to identify the lag, log, stationary and death phase in using this growth curve? Are yo...

A: The growth curve of bacterial cells can be divided into four distinct phases known as lag, log (or e...

Q: When grown in a greenhouse, the leaves of Aloe nobilis are green. When found in the desert in the wi...

A: Plants have an autotrophic mode of nutrition as they prepare their own food. Hence, known as Produce...

Q: What do you think would happen to the population of blue whales after hunting them was banned? A. Th...

A: A blue whale is a marine mammal belonging to the baleen whale suborder Mysticeti.It is the largest a...