Answer:
a. Needs
Explanation:
Needs are those things that humans primarily depend upon. They are said to be the basic necessities of man. They include; food, clothing, shelter and education.
These basic necessities are a requirement for people in any nation to live a decent life and sometimes, even survive. These basic necessities, called NEEDS, is the poverty determinant of a nation.
A zygote is best described as
A. a blastocyst attached to the placenta through the uterus
B. a sperm or an egg
C. any haploid cell
D. the first cell with DNA from both parents in its nucleus
Answer:
A zygote is D. The first cell with DNA from both parents in it’s nucleus.
Explanation:
A zygote is the unison of a sperm and an egg cell as to where the genetic information is combined in the fusion of the two parents haploid cells. Therefore it would be the first cell that contains DNA in the nucleus from both parents.
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- How do acidic and alkaline environments affect the growth and survival of bacterial?
Answer:
Usually, the catalytic properties of the enzymes are lost and metabolism is halted. Most bacteria grow best around neutral pH values (6.5 - 7.0), but some thrive in very acid conditions and some can even tolerate a pH as low as 1.0. Such acid loving microbes are called acidophiles.
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Calculate the diversity of the community below using Simpson's diversity index. Provide your answer to the nearest hundredth.
An area of the black forest in Germany contains 134 pitch pines, 24 Douglas firs, and 53 red pines.
Answer:
Diversity of the community = 2.097
Explanation:
Given:
Number of pitch pines = 134
Number of douglas firs = 24
Number of red pines = 53
Find:
Diversity of the community
Computation:
Simpson's diversity index = N(N-1)/Σn(n-1)
Particular n n(n-1)
Pitch pine 134 17822
Douglas firs 24 552
Red pine 53 2756
Total N=211 21130
So,
D= [211(211-1)] / 21130
D = 2.097
Diversity of the community = 2.097
The diversity of the community below using Simpson's diversity index. Provide your answer to the nearest hundredth is 2.097.
diversity of the community = N(N-1)
N= 21121130no. of
d= 2.097
What is Simpson's diversity index.?It is a measure of index that has diversity which takes into no. species.Itis calculated by nxn-1.
Ths it is well explained.
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The Nutrition Facts panel provides valuable nutrition information such as serving sizes, nutrient quantities, and Daily Values to assist individuals in making informed food choices. Use the Nutrition Facts panel from a container of cereal below to answer the following questions. Based on one serving, how many grams of total sugar do not come from an added sugar source?
Answer:
The right answer is "3 grams".
Explanation:
Yet another portion doesn't supply about 3 g of sugar from such an increased proportion.
That would be the reason why sugar has been biologically active throughout the cereal's static environment.All cereals that are given above 6 g of sugar for each serving are determined to be harmful as well as reacted by either a cereal that has very little sugar.The substrate sequence recognized by protein kinase A (PKA) is R-R-G-S-I. The pseudosubstrate sequence found within the regulatory domains of PKA is R-R-G-A-I. Draw each sequence as a peptide. Describe the role of each amino acid (in both sequences).
Answer:
The guanidine group of the first two arginine forms a pair of ions, by which salt bridge is formed
Glycine In both sequence, act as non-polar amino acid and two leucine of enzymes will form a hydrophobic groove. isoleucine fits into the hydrophobic groove.
In R-R-G-S-I serine is phosphorylated by an active catalytic subunit .
In R-R-G-A-I serine is been replaced by alanine
Explanation:
The role of the each amino acids
The guanidine group of the first two arginine forms a pair of ions, by which salt bridge is formed
Glycine In both sequence, act as non-polar amino acid and two leucine of enzymes will form a hydrophobic groove. isoleucine fits into the hydrophobic groove.
In R-R-G-S-I serine is phosphorylated by an active catalytic subunit .
In R-R-G-A-I serine is been replaced by alanine
Attached below is the sequence as a peptide .
period between two periods of mitosis
the process involving the division of the nucleus in a
reproductive cell
Answer:
The nuclear division that forms haploid cells, which is called meiosis, is related to mitosis. As you have learned, mitosis is the part of a cell reproduction cycle that results in identical daughter nuclei that are also genetically identical to the original parent nucleus.
Explanation:
The nuclear division that forms haploid cells, which is called meiosis, is related to mitosis. As you have learned, mitosis is the part of a cell reproduction cycle that results in identical daughter nuclei that are also genetically identical to the original parent nucleus.
Answer:
In general, mitosis (division of the nucleus) is preceded by the S stage of interphase (during which the DNA is replicated) and is often followed by telophase and cytokinesis; which divides the cytoplasm, organelles and cell membrane of one cell into two new cells containing roughly equal shares of these cellular components.
Explanation:
The different stages of Mitosis all together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two genetically identical daughter cells.Meiosis results in four haploid daughter cells by undergoing one round of DNA replication followed by two divisions. Homologous chromosomes are separated in the first division.
Which type of chlorophyll makes the yellow-green color of some veggies?
Answer:
Chlorophyll B
explain the factors that contribute to the success of class insecta.
Answer:
It is believed that insects are so successful because they have a protective shell or exoskeleton, they are small, and they can fly. Their small size and ability to fly permits escape from enemies and dispersal to new environments. ... In addition, insects can produce large numbers of offspring relatively quickly.
There are a number of important aspects that contribute to the success of the Class Insecta, which includes insects. The factors are their size, thin exoskeleton, reproduction, etc.
First off, because of their modest size and effective body composition, they may occupy a variety of environments and fill a variety of biological niches.
Insects have a thin exoskeleton that allows for flexibility and motion as well as protection and support.
Because of their diminutive size, they can access a variety of microhabitats, cracks, and supplies that larger species cannot.
In addition, insects have remarkable methods and capacities for reproduction. The majority of insects reproduce quickly and give birth to numerous young.
They use a variety of reproductive techniques, such as internal fertilisation and complex courtship rituals.
Thus, the small size, effective body structure, variety of reproductive techniques, flexibility, and resilience of Class Insecta are factors in their success.
Thus, these elements have made it possible for insects to survive in a variety of habitats, use a range of resources, and play essential roles in ecosystems as pollinators, decomposers, predators, and prey.
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All vaccines are produced from dead or weakened:
a
Phagocytes
b
Allergens
c
Earthworms
d
Pathogens
Answer:
d
Explanation:
because that is the virus and they put the virus in all vaccine but weakend
How does an ATP molecule release
energy for cells?
A. changing the base, adenosine, to guanine
B. breaking the bond between the 2nd and 3rd
phosphate
C. removing the ribose sugar
Answer:
The correct answer is - B. breaking the bond between the 2nd and 3rd.
Explanation:
ATP molecule is known as cellular currency as it provides energy for cellular functions. ATP released energy when one phosphate group is removed or eliminated by breaking a phosphoanhydride bond. The rebreaking of this bond and removal is known as hydrolysis, and ATP is converted to adenosine diphosphate (ADP).
Breaking the bond between the 2nd and 3rd phosphate groups provides a very high amount of energy. There is also additional energy released when phosphate is removed from ADP to form adenosine monophosphate (AMP).
In a certain type of plant, the gene for red flowers in a dominant and the gene for yellow flowers is recessive. If a purebred plant with red flowers was crossed with a purebred plant with yellow flowers, what color flowers would the offspring have?
Answer : Yellow
Explanation : Because purebred plants have lighter colored dominence .
Which of the following is MOST directly involved in the motility and intercellular signaling in T-cells: W) filamentous actin X) 200-nanometer myosin fibrils Y) cathepsin-myosin complexes Z) microvilli
Answer:
W) filamentous actin
Explanation:
T cells are a type of white blood cells (leukocytes) that play a fundamental role in the immune system by determining the specificity of the immune response to specific antigens. In T cells, the remodeling of the actin cytoskeleton is critical for the movement of these cells through different tissue environments and for adjusting their behavior during the scanning of antigen-presenting cells. The actin cytoskeleton acts as a physical platform for intracellular signaling events that occur at the immunological synapse formed between a T cell and an antigen-presenting cell, thereby contributing to T cell activation.
Which statement describes a feedback mechanism involving the human pancreas?
1
The production of estrogen stimulates the formation of gametes for sexual reproduction.
2
The level of oxygen in the blood is related to heart rate
3
The level of sugar in the blood is affected by the amount of insulin in the blood
The production of urine allows for excretion of cell waste
The level of sugar in the blood is affected by the amount of insulin in the blood describes a feedback mechanism involving the human pancreas.
What is Pancreas?This acts as an organ and a gland and is involved in the production of insulin which regulates sugar level in the blood.
It decreases the sugar level which is why option 3 was chosen as the most appropriate choice.
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Can someone tell me the percentage
plz plz plz
don’t ignore helpppppppppppppp
Answer:
GG - 25%
Gg - 50%
gg - 25%
what are the childhood disease?
Answer:
well childhood disease is diseases that happens in childhood like chickenpox and etc
I hope it helps
[tex]\huge\textbf{Answer :-}[/tex]
[tex]\large\underline{\textsf{\textbf{Childhood Diseases}}}[/tex] are diseases that mainly occur or become symptomatic when a person is a child (0 - 18) years. The term is quite self-explanatory. Few examples will be ➟ Common Cold, whopping cough etc. Most of the childhood diseases are not dangerous.
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꧁❣ ʀᴀɪɴʙᴏᴡˢᵃˡᵗ2²2² ࿐
function of Iris?
function of Suspensory ligament?
function of Yellow Spot?
function of Choroid?
function of retina?
Answer: See explanation
Explanation:
• Function of Iris?
The Iris simply regulates the amount if light that'll enter ones eyes.
• function of Suspensory ligament?
The sensory ligament maintains and also supports the eyeball's position within the orbit, while also preventing the eyeball's downward displacement of the eyeball.
• function of Yellow Spot?
A yellow spot refers to the area which can be found on the retina where there is beat vision. It is the part where maximum light falls
• Function of Choroid?
The choroid supplies nutrients to the outer retina and also maintains the volume of the eye and its temperature.
• function of retina
The retina receives light which is converted into neural signals, and this will then be sent on to the brain.
what is difference between biology and chemistry
biology is about cells and the body
chemistry is more elements and molecules
Answer:
Biology is the study of life or to precise, living organisms and how they react whilst chemistry is the study of the reaction of substances and their properties.
Explanation:
Biology is more of organisms like humans and how they react to things
Chemistry is more of how substances react and their properties
Which statement describes all stable ecosystems?
1) Herbivores provide energy for the autotrophs,
2) The populations of predators are dependent on
the populations of their prey.
3) The number of autotrophs equals the number of
heterotrophs.
4) Consumers synthesize ATP from light energy.
Stable ecosystem has the populations of predators are dependent on the populations of their prey of predators .
What is ecosystem?An ecosystem is a geographic area where plants, animals, and other organisms, as well as weather and landscape, work together to form a bubble of life.
Who are predators ?Predators are organisms that hunt and kill other organisms for food. The organisms that are consumed by the predators are known as the prey.
Stable ecosystem has the populations of predators are dependent on the populations of their prey of predators .
Hence, option 2 is correct
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cheng made a chart to list the functions of certain fish structures
which headings correctly complete the chart?
a) x: fin
y: swim bladder
z: lateral line
b) x: fin
y: lateral line
z: swim bladder
c) x: lateral line
y: swim bladder
z: fin
d) x: lateral line
y: fin
z: swim bladder
About the question:
You will find the chart in the attached files
Answer:
b) x: fin
y: lateral line
z: swim bladder
Explanation:
The dorsal fin is found in the dorsal region of the fish body. Depending on the species, there can be one or two dorsal fins. Membranous structures and bony or cartilaginous ratios compose the fins. One of the main functions is to stabilize the body in water, providing equilibrium. When the dorsal fin is erect, it acts as a keel, helping the fish not to turn aside. Fishes also use these fins as protection because the cartilaginous or bony ratios act as spines. The animal uses these spines to defend itself from predators. The morphological variety of dorsal fins in the different species is used in taxonomy.
The Lateral Line is a system or sensory organ composed of special receptors called neuromasts, which can be found all along the lateral region of the animal. The lateral line perceives information from the environment, such as light, sound, or water movement, among others. These signs are translated into nervous messages. The lateral line is useful to detect prey, predators, other animals moving, objects, etcetera. It is significant for intraspecific interaction, especially during swimming motions in schools. The lateral line receives perturbations of short distance, generated by other living beings or by objects. Some studies confirm that the lateral line is also sensitive to chemical stimuli.
The swim bladder is a neumatic sac-like structure filled with gases coming from the blood. Its main function is to allow neutral floating and let the animal in suspension at any depth, with no need for muscular effort. The animal can regulate the size of the bladder. This organ can be found in most pelagic fishes, while the benthonic ones or the ones that actively swim lack it.
Answer:
person is right. B
Explanation:
Put the sentences below in the correct order, numbering then from 1 through 12 on the lines provided. Read each statement before you decide the order in which they occurred.
Answer:
7 1 2 5 9 4 11 10 3 6 12 8
Explanation:
This is the right pattern because it was easy
briefly discourse glycolysis
Answer:
Glycolysis:
Glycolysis is the primary step of cellular respiration in which glucose molecule is broken down to pyruvate in a set of reaction and produce energy. It generates two molecules of pyruvate, ATP, NADH and water. The process takes place in aerobic as well as anaerobic conditions in the cytosol of the cell cytoplasm.
Significance: generate pyruvate for the next stage, pyruvate oxidation, and release four ATP molecules while spends two ATP molecules in glycolysis, for a net gain of two ATP molecules.
2. studies the genomes of different species and
how they are related
Explanation:
Comparative genomics is a field of biological research in which the genome sequences of different species — human, mouse, and a wide variety of other organisms from bacteria to chimpanzees — are compared.
Click the - button that is to the left of the intensity scale to zoom out such that the top of the scale is at 100. Move the temperature slider to that of the Sun. The red part of the thermometer on the far right should just be touching the line marked Sun. Approximately what temperature is the surface of the Sun?
Answer:
5,500°C - 6,000°C
Explanation:
Approximately, 5,500°C - 6,000°C temperature is the surface of the sun.
What is thermometer?
An instrument for measuring and indicating temperature, typically one consisting of a narrow, hermetically sealed glass tube marked with graduations and having at one end a bulb containing mercury or alcohol.Which expands and contracts in the tube with heating and cooling.Learn more about thermometer below,
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The diagram below does not represent a sustainable energy pyramid in an ecosystem because
Answer: more energy must be available in the producer level than in the consumer levels
Explanation:
An organism has a haploid number of 20. What is the organism's diploid
number?
Answer: The haploid number of an organism is 20. What is the diploid number of the organism?
Explanation: Because haploid means half and diploid means twice of the half, if the haploid number is 20, the diploid number will be 20 2 = 40.
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1. Which of the following lists includes cellular structures found
in both plant and animal cells?
A. Chloroplasts, cell wall, cell membrane, cytoplasm
B. Vacuoles, cell membrane, nucleus, mitochondria
C. Cell membrane, cytoplasm, nucleus, cell wall
D. Chloroplasts, vacuoles, cell wall, cytoplasm
Answer:
C. Cell membrane, cytoplasm, nucleus, cell wall
Explanation:The plant cell and the animal cell can be differentiated by the presence of organelles in them.although both are classified as eukaryotes, the presence of the cell wall, vacuoles, and chloroplasts are the most remarkable and distinguishing components of the plant cells which are absent in the animal cells.
Most angiosperms incorporate the assistance of animals in their reproductive cycle. This is a major advancement that gave them an advantage over other plant lineages and helped them become the dominant type of plant on Earth today. Which of the following steps in the reproduction of angiosperms do animals assist with? Check all that apply.
A. Pollination
B. Seed dispersal
C. Fertilization
Answer: The steps in reproduction of angiosperms that animals assist with is
a.) Pollination
Explanation:
ANGIOSPERMS are flowering plants that forms the largest group in the plant kingdom. The angiosperms are more highly evolved than other plants because they have an abundance of water- conducting vessels and bear seeds which are protected within fruits. Fruits develop from the ovaries of flowers, the female reproductive organ of the angiosperms.
Pollination is only the first step in the process of sexual reproduction in flowering plants. It is followed by fertilization and development of the zygote. These steps change the flower into a fruit enclosing seeds. Pollination in flowering plants involves the transfer of pollen grains from an anther to a receptive stigma.
Pollination depends on external pollinating agents known as pollinators. These include
--> insects and
--> animals such as birds, squirrel,bats and snails.
Animals such as birds perceive red colour more clearly than insects. They are also larger than insects and unlike insects have a poor sense of smell. As a result, flowers of plants that are pollinated by birds are usually Res with no scent. While flowers pollinated by insects are scented and produce nectar. As they visit the flower, they become covered with the pollen from the mature anthers of the flower. These pollen grains are eventually transferred to the stigma of another flower of the same species leading to fertilization which is a step in plant reproduction. Therefore, pollination is a step in reproduction of angiosperms that animals assist.
Answer:
B. Seed dispersal
Explanation:
Seed dispersion is an ecological process very important in keeping ecosystemic biodiversity and in vegetal communities regeneration. There are many types of dispersion. But probably, zoocory is one of the most significant types of seed dispersion.
There are two types of zoocory:
Exozoocory: refers to the transport of seeds in the fur or feathers of animals.Endozzocory: refers to the ingestion of the seeds and the posterior excretion.By endozoocory, herbivores are significant not only for dispersing the seeds but also for scarifying them. When seeds pass along the digestive system of the animals, the whole digestive process eliminates or debilitates the cuticle and other external structures, increasing the proportion and speed of germination.
Many vertebrates are involved in seed dispersion, but birds and frugivorous bats play an important role in dispersing seeds far away from the parental plant, playing an important role in the natural ecosystem regeneration processes.
Why are there largely a larger number of producers than tertiary consumers in an ecosystem?
A. Only about half of the energy passes on to the next organism in a food chain, so there needs to be more of the living things lower in the energy pyramid to support the living things higher in the pyramid.
B. All of the energy is passed from level to level in the energy pyramid, so the number or tertiary consumers is always higher.
C. Only about 10% of energy is passed on to the next organism in a food chain, so there needs to be more of the living things lower in the energy pyramid to support the living things higher in the pyramid.
Answer:
C
Explanation:
the more higher up you go on a pyramid, the lower energy you get
A pH value of ____ has the highest concentration of hydrogen ions.
Answer:
0
Explanation:
Since the number 14 would be the value to have the strongest base in the pH scale, it would only make sense that 0 is the most acidic.
10. Which process uses special proteins on the surface of the membrane
to identify specific molecules for transport into the cell?
a. phagocytosis
b. pinocytosis
C. receptor-mediated endocytosis
d. exocytosis
Answer:
C. Receptor-mediated endocytosis