Which is the structure labeled a?
Answer:
=A substance.
.............
What is responsible for the red tide phenomenon? It is a phenomenon that usually coincides with storm surges; the name comes from the red kelp that often washes ashore as a result of rough weather. Red tide occurs in patches of water where certain species of dinoflagellates flourish. They are so abundant that the water becomes discolored and takes on a red hue. Red tides occur once a year and in accordance with the lunar cycle. The water appears red as a result of reduced levels of photosynthetic pigmen
Answer:
Red tide occurs in patches of water where certain species of dinoflagellates flourish.
Explanation:
Red tides refer to the noticeable microalgae proliferation that can be recognized for being a big spot in the sea of a characteristic coloration. This phenomenon is caused by two microalgae groups: diatoms and dinoflagellates, both part of phytoplankton.
Red tides occur when certain environmental factors -such as temperature, light, nutrients availability, ph, etcetera- favor the overproduction of these organisms. These species produce toxins that turn to be dangerous for other animal species that feed on them.
Because these microorganisms produce pigments, their accumulation on the sea surface can be noticed as reddish, brown, or greenish color spots of variable extension.
A bacterial cell wall is composed of: A) A polysaccharide consisting of a single type of monosaccharide unit and cross-linking oligopeptides. B) A polysaccharide consisting of 2 types of monosaccharide units and cross-linking oligopeptides. C) A polysaccharide consisting of 3 types of monosaccharide units and cross-linking oligopeptides. D) Two different polysaccharides and 1 type of oligopeptide, which are cross-linked.
Answer:
B) A polysaccharide consisting of 2 types of monosaccharide units and cross-linking oligopeptides.
Explanation:
A cell can be defined as the fundamental or basic functional, structural and smallest unit of life for all living organisms. Some living organisms are unicellular while others are multicellular in nature.
Also, a unicellular organism refers to a living organism that possess a single-cell while a multicellular organism has many (multiple) cells.
A bacterial cell is made up of peptidoglycan and its main function is to maintain the shape of a cell while preventing it from bursting due to osmotic pressure. Also, the bacterial cell inhibits the passage of larger molecules but allows the free movement (passage) of smaller molecules in the body of a living organism.
Basically, bacterial cell wall comprises a polysaccharide that's typically made up of two (2) types of monosaccharide units and cross-linking oligopeptides.
Why are
there no gram-positive archaea species, but there are gram-positive
bacteria species?
Answer:
There are no gram positive archaea because archaea lack peptidoglycan in their cell walls, meaning that the archaeic cell walls are more similar to gram negative bacterial walls, although they do show a greater variety of cell wall types.
EXPLANATION
Bacteria can be divided into gram-positive bacteria and gram-negative bacteria because of their cell wall composition. The cell wall of gram-positive bacteria is made up of peptidoglycan which retains crystal violet stain and appears purple in color under microscope. The cell wall of gram-negative bacteria has an outer layer of lipopolysaccharide which do not retain crystal violet color and appear pink. The cell wall of archaea is not made up of peptidoglycan but is made up of pseudo-peptidoglycan, therefore, no gram-positive archaea species is present on the earth.
state two functions of mucus produced along the alimentary canal
Answer:
helps reduce intestinal inflammation by decreasing bacterial interaction with intestinal epithelial cells.
Why does deposition typically occur on the inside of the curve of a meandering stream?
1 . Water velocity decreases
2. Stream gradient increases
3. Water is deeper
4. Stream is narrower
Answer:
water velocity decreases
Explanation:
Sediment deposition will occur along the inner meander bends where the velocity is low.
state and explain five factors that determine energy requirements in human beings
Answer:
Basal metabolism, Physical activity, Growth, Pregnancy and Lactation.
Explanation:
Basal metabolism, Physical activity, Growth, Pregnancy and Lactation are the five factors that determine energy requirements in human beings. To perform daily physical activities, we need a lot of energy which can be taken through breaking of food molecules as well as stored form of macromolecules such as fats and proteins etc. Energy is also needed for the metabolism and growth in humans beings because metabolism and growth processes needs energy.
Three complementary base units known as a(n)
ensure that the correct amino acid is delivered.
Answer:
Codon
Explanation:
which of the following is the most likely result of converting farmland to urban development?
A. the amount of cropland available increases
B. people discover more efficient ways to grow crops
C. people learn to live off less food
D. food costs more because there is less cropland
Answer:
Food costs more because there is less cropland
Explanation:
The amount of cropland available increases is the most likely result of converting farmland to urban development. So, the correct option is A.
What is Urban development?Urban planning is also called city planning, town planning, regional planning or rural planning which is defined as the technical and political process focused on the development and design of land use.
This development involves the transformation of an area into an urban state in various dimensions such as physical, geographical, economic and social through population and land use change. The conversion of farmland to urban development has many effects in terms of food security, reduced agricultural productivity, and agricultural labors.
The amount of cropland available increases is the most likely result of converting farmland to urban development.
Therefore, the correct option is A.
Learn more about Urban development, here:
https://brainly.com/question/3578879
#SPJ2
Which of the following processes involves breaking down 3-carbon molecules into 2-carbon molecules?
Glycolysis
Krebs Cycle
Transition Reaction
Electron Transfer Chain
Glycolysis breaks down 3-carbon molecules into 2-carbon molecules.
Un tractor tira de un remolque cargado sobre un camino plano libre de fricción, con una fuerza horizontal constante de 440 N. Si la masa total del remolque y su contenido es de 275 kg, ¿Qué aceleración tiene el remolque? Formula a utilizar : Ʃ F = m . A *
Answer:
1,6 m / s ^ 2
Explanation:
De las leyes de Newton;
Fuerza = masa × aceleración
masa = 275 kg
Fuerza = 440 N
Aceleración = Fuerza / masa
Aceleración = 440N / 275Kg
Aceleración = 1,6 m / s ^ 2
I need help!! Identify the types of inheritance based on the expression of alleles in the organism.
Answer:
multiple, recessive, dominant
Explanation:
multiple, many traits show. recessive two can show because they share. and dominant rule out the other ones so it is the only one.
Answer:
This is the answer
Explanation:
What type of evolutionary adaptations did plants acquire to allow them to grow in areas that were not directly on a water source?
Answer:
Plants developed roots to absorb water from the ground
Answer:
Vascular seedless plants evolved specific structures to transport and hold fluids, reducing dependence on water sources.
Explanation:
If given the ability to hold on to water, the plant does not have to frow directly on a water source.
Which is an effect of an increase in ocean temperature?
A. Increased precipitation
B. Increased percolation
C. Decreased evaporation
D. Decreased transpiration
Answer:
a
Explanation: because the increased tempuature will result in an increase in evaporation which in turn increases precipatation
write a short note on akaryotic cells
Answer:
Eukaryotic cells have a nucleus enclosed within the nuclear membrane and form large and complex organisms. Protozoa, fungi, plants, and animals all have eukaryotic cells. ... They can maintain different environments in a single cell that allows them to carry out various metabolic reactions
Answer:
Explanation: Akaryocytes, also known as akaryotes or acaryotes, are cells without a nucleus. The most common type of akaryocytes are viruses. The name is derived from the Greek prefix "a-", meaning "without" and the Greek "karyo-", meaning "nut" or "kernel". ... This cell biology article is a stub.
What is the term for a female reproductive cell?
sperm
egg
tetrad
embryo
Answer:
Second choice; egg
Explanation:
Gametes are an organism's reproductive cells.
- Female gametes are called ova or egg cells
- Male gametes are called sperm
A tetrad consists of four chromatids, and a chromatid is one half of a duplicated chromosome.
An embryo is an unborn offspring (child) developing.
Answer:
Egg
Explanation:
The egg also known as ovum is the female reproductive cell.
anyone please help me
Answer:
b b
B Bb Bb
b bb bb
if the brown mail had been BB then all offspring would have been Bb and all brown however is the male is Bb as above and you perform a test cross 50% of all Offspring should have the bb genotype and a white phenotype a testcross to a heterozygous individual should always yield about a one-to-one ratio of the dominant or recessive phenotype so both of the genotypic and phenotypic ratios here are 50/50
Hello
Would you like to be my friend? Can i please get your intro?
Myself Ojasvi
Class 8, 13
India
Give an summary of the process occuring in the diagram.
What process is this?
What are the jobs of rRNA, mRNA and tRNA?
What is the end product of the process?
Answer the question using complete sentences and the diagram.
Answer:
- I believe transcription.
- Messenger RNA (mRNA) molecules carry the coding sequences for protein synthesis and are called transcripts; ribosomal RNA (rRNA) molecules form the core of a cell's ribosomes (the structures in which protein synthesis takes place); transfer RNA (tRNA) molecules carry amino acids to the ribosomes during protein development.
- the end product is RNA.
Explanation:
I hope this helps! (pls mark brainliest) :)
What is a possible result of evaluating your investigation
Tania looks at several different multivitamins in the store and notes that there are many different formulations with
varying amounts of several types of vitamins. She would like to choose a brand that only has the essential vitamins
that humans need to consume.
What are the vitamins that Tania should verify are in the product that she purchases?
O vitamins A, B, C, D, E, and K
O vitamins A, B, C, E, and K
O vitamins A, B, C, D, and E
O vitamins A, B, C, D, E, F, and K
b) Describe two measures each to conserve natural vegetation and wildlife, Class 8 - Geography - Unit 1 betwen 90to100 words
Answer:
Afforestation and national sanctuaries are two measures each to conserve natural vegetation and wildlife.
Explanation:
The natural vegetation and wildlife restoration is one of the main concerns that are essential for the development and growth of a country's biodiversity. Due to human land-use changes and migration of people, from one place to another with their cattle, lands are becoming deserted and grassland and forest land are declining.
So, we need to plant more trees that act as the natural habitat for the wildlife and preserve and conserve them in parks and sanctuaries which will help reduce the impacts of global warming and climate change. We should not kill any animal.We should decrease the use of plastics.explain how oxygen is used by the body in cellular respiration and explain how carbon dioxide is a waste product of this process.
Explanation:
During cellular respiration the cell uses oxygen to break down sugar. Breaking down sugar produces the energy your body needs. ... Carbon dioxide is the waste product of cellular respiration that you breathe out each time you breathe. Blood picks up oxygen and releases carbon dioxide in the lungs.
hope it helps you pls mark me as branliest If you're kind enoughWhich of the following breaks food down into energy that the body can then use? OA. Enzymes OB. Hormones OC. Lymphocytes OD. Neurons
Answer:
Enzymes
Explanation:
Enzymes are proteins that act as biological catalysts, which speed up chemical reactions, to help support life. These enzymes help to perform important tasks such as breaking foods down into energy that the body can use.
Hope this helps :)
Hi,
Which of the following breaks food down into energy that the body can then use?
Answer:
OA. Enzymes
----------------------------------------------------------------------------
- Hormones regulates our Body ;
- Lympocytes are form of White blood cells ;
- Neurons make up our whole nervous system.
Two lizards with different coloring exist within the same ecosystem. One lives in the trees, and the other prefers hiding among rocks. They are separate species because
they behave differently
Othey have different characteristics
Othey cannot successfully reproduce
Othey exist within the same ecosystem
Natural selection is that the process through which populations of living organisms adapt and change.
What are the adaptations behavior in organisms?
Many animals are well adapted to biotic and abiotic conditions due to behavioral, physiological, or structural adaptations that increase their chances of survival and reproduction.
Behavioral - responses made by an organism that help it to survive/reproduce..
Physiological - a bodily process that helps an organism to survive/reproduce.Structural - a feature of an organism’s body that helps it to survive/reproduce.Thus, we can conclude that the correct option is (b).
They are separate species because they cannot successfully reproduce.
which means they have different adaptation methods.
You can learn more about adaptation methods here:
https://brainly.com/question/8365237
#SPJ2
describe the role of enzymes in seeds germination
activity
piz help me lpiz
Answer:
biotic --> trees,plants,fish,humans,dog,cat,hen.....
abotic --> vehicles,stone,rock,wood, chappal,pen.........
Explanation:
biotic is living things....
abotic is non living things
Describe the preparation of compost in your locality
Please helppp!!! it’s of biologyyyy
Answer:
Im sorry i dont know the answer !!!
Explanation:
can someone help me?
Answer:
i believe b but check with other people
Explanation:
) An allosteric interaction between a ligand and a protein is one in which: (3 pts) A) binding of a molecule to a binding site affects binding of additional molecules to the same site. B) binding of a molecule to a binding site affects binding properties of another site on the protein. C) binding of the ligand to the protein is covalent. D) multiple molecules of the same ligand can bind to the same binding site. E) two different ligands can bind to the same binding site.
Answer:
B) binding of a molecule to a binding site affects the binding properties of another site on the protein.
Explanation:
In an allosteric interaction between a protein and a ligand, the ligand binds to a site in the protein. As a result, there is a change in the properties of other active sites on the protein. These active-site changes may or may not allow the protein to bind to other molecules. There is a change in the protein that affects the affinity of the active site for other molecules. The affinity on the active site increases if the protein binds to an activator and decreases if the protein binds to an inhibitor molecule.
