Answer:
The correct answer is
" organic compounds come only from nonliving things".
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Organic compounds contain carbon atoms bonded to other atoms. The correct option is A.
What are organic compounds?Any of a wide area of chemical compounds in which one or many carbon atoms are covalently connected to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen.
Carbides, carbonates, and cyanides are among the few carbon-containing compounds that are not classified as organic.
The main distinction between organic and inorganic compounds is that organic compounds always contain carbon, whereas most inorganic compounds do not.
Furthermore, almost all organic compounds contain carbon-hydrogen or C-H bonds.
Organic foods are grown without the use of synthetic pesticides, fertilizers, or herbicides.
Organic meat, eggs, and dairy products are derived from animals that have been fed natural feed and have not been given hormones or antibiotics.
Thus, the correct option is A.
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Which of the following is not one of planes and sections of body orientation?
Answer:
They are the median plane, sagittal planes, coronal (frontal) planes and horizontal (transverse) planes
explain Calvin cycle
Answer: The Calvin cycle is a process that plants and algae use to turn carbon dioxide from the air.
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What are the methods of waste disposal ? Write in briefly.
Answer:
Methods of waste disposal are :-
Biogas plant: - Biodegradable material is used to produce biogas and manure.
Sewage treatment plant: The drain water is treated at plants before adding it to river.
Land filings: - The waste are buried in low-lying areas and compacted with bulldozers.
Composting: - Organic waste are filled in compost pit to make compost for plants.
Recycle: - This means that you collect plastic, paper, glass and metal items and recycle these materials to make required things instead of synthesizing or extracting fresh plastic, paper, glass or metal. In order to recycle, we first need to segregate our wastes so that the material that can be recycled is not dumped along with other wastes.
Reuse: - This is actually even better than recycling because the process of recycling uses some energy. In the ‘reuse’ strategy, you simply use things again and again. Instead of throwing away used envelopes, you can reverse it and use it again. The plastic bottles in which you buy various food-items like jam or pickle can be used for storing things in the kitchen.
Refuse: -This means to say No to things people offer you that you do not need. Refuse to buy products that can harm you and the environment, say No to single-use plastic carry bags.
Repurpose - This means when a product can no more be used for the original purpose, think carefully and use it for some other useful purpose. For example, cracked crockery, or cups with broken handles can be used to grow small plants and as feeding vessels for birds.
Which direction do
rock fragments eroded
by runoff generally
travel?
A downhill
B uphill
C uphill at certain times
of the day and
downhill at other
times of the day
D horizontally until
they reach an
obstacle that they
cannot pass over
Answer:
A downhill
Explanation:
A runoff happens when water drags sediment from a rock over a sloping terrain. Thus, water drags the eroded fragments of a rock in favor of gravity, pushing these fragments downwards. This is very common in mountainous and steep regions, without vegetation cover, where erosion caused by runoff is very high.
True or false: Drug resistance only arises from an organism gaining the genetic information for the resistance from another organism.
Drug resistance only arises from an organism gaining the genetic information for the resistance from another organism.
Answer: True
Consider the phylogenetic tree of Old World primates.
According to the tree, which primates share the most recent common ancestor with humans?
A. gorillas
B. chimpanzees
C. bonobos and chimpanzees
D. bonobos and gorillas
Answer: c) bonobos and chimpanzees
2. Many microscopic organisms are clear, making them almost impossible to see under a microscope.
What can be done to a sample to make it easier to see?
Use iodine.
Iodine solution makes the sample you want to study of microscopic organism more visible.
Which of the following is NOT a unifying theme in biology?
A. All levels of life have systems or related parts.
B. Structure and function are not related in biology.
C. Organisms must maintain homeostasis to survive diverse environments.
D. Evolution explains the unity and diversity of life.
Which statement describes an element? Check all that apply.Which statement describes an element? Check all that apply.
An element is a pure substance that cannot be broken down into a simpler form.
An element is made of two or more atoms that are chemically combined.
All elements are listed on the periodic table of elements.
An element symbol begins with a capital letter; if there is a second or even third letter, it is a lowercase letter.
Answer:
- An element is a pure substance that cannot be broken down into a simpler form.
- All elements are listed on the periodic table of elements.
- An element symbol begins with a capital letter; if there is a second or even third letter, it is a lowercase letter
Explanation:
An element is one of the two types of pure substances i.e. substances that cannot be broken down into simpler forms. Elements are made up of only one type of atom e.g. Fe, Cl2 (two chlorine atoms).
All known or discovered chemical elements are represented on the periodic table. In an order of increasing atomic number, elements are arranged from left to right on the periodic table.
The symbol of an element begins with a first letter written in capital letters while the subsequent letters can be written in lower cases. For example, Fe, Cu, Hg, Zn etc.
What conclusion can be drawn concerning an inhibitor if the Km is the same in the presence and absence of the inhibitor
Answer: The inhibitor has a structure that is not similar to the substrate.
Explanation:
Enzymes are molecules that act as catalysts of chemical reactions, accelerating the reaction rate without affecting the equilibrium of the reaction, as long as it is energetically possible. They act on molecules called substrates, which are converted into different molecules called products.
Enzymes are very selective with their substrates and are also susceptible to inhibitors which are molecules that regulate enzyme activity, inhibiting its activity. Inhibitors can be classified as reversible and irreversible. Irreversible inhibitors bind covalently to the enzyme with no possibility of reversing the modification they make, while reversible inhibitors bind reversibly to the enzyme and can reverse the modification.
A reaction occurring under the control of an enzyme reaches equilibrium much faster than the corresponding uncatalyzed reaction. The reaction, i.e. the production of products, can reach a saturation point if the substrate concentration increases too much, decreasing the concentration of free enzyme, which becomes the form with bound substrate. At the maximum rate (Vmax) of the enzyme, all active sites of the enzyme have substrate bound, and the amount of complexes is equal to the total amount of enzyme. The amount of substrate required to obtain a given reaction rate is also important and this parameter is given by the Michaelis-Menten constant (Km), which is the concentration of substrate required for an enzyme to reach half its maximum velocity. Each enzyme has a characteristic Km value for a given substrate, which can tell us how close the binding between the substrate and the enzyme is. Then, inhibitors bind to the substrate and increase the Km value as it interferes with the binding between substrate and enzyme. In this case, the Km value of the enzyme is the same in the presence and absence of the inhibitor, this means that there is no change, because the inhibitor has a different structure to the substrate, it does not bind and does not change the Km value.
Earth’s continents are constantly in motion because they sit on top of gigantic plates which float on Earth’s mantle. Energy from the Earth’s core creates convection currents in the molten layer, and the currents move the plates. Over extremely long periods of time, this movement creates new _______.
a.
biomes
b.
plates
c.
atmospheric layers
d.
elements
Answer:
a. biomes
Explanation:
Ecology can be defined as the scientific study of the relationship between living organisms such as plants and animals in relation to their physical and biological environment.
An ecosystem can be defined as the natural living habitats of both living and non-living organisms, in which they interact with one another. Essential services such as plant pollination, water purification, nutrient cycling etc that are being provided by the ecosystem are really very vital, important and useful for the sustenance of life, both for humans and enhances social welfare.
Generally, the different continents on Earth are in a constant motion due to the fact that they're sitted on top of gigantic plates floating on Earth’s mantle.
Furthermore, the Earth’s core generate energy which also creates convection currents in the molten layer of the Earth, thereby, moving the plates.
Over an extremely long periods of time, the movement of these plates create new biomes.
In Ecology, a biome can be defined as a relatively distinct terrestrial region which is made up of animals, micrograms and plants, and it is typically characterized by similar environmental factors such as wind, relative humidity, rainfall, temperature, etc., irrespective (regardless) of where it occurs in the world.
There are five (5) main types of biomes and these are;
I. Forest.
II. Aquatic.
III. Desert.
IV. Grassland.
V. Tundra.
Answer:
A - Biomes
Explanation:
E2023
what formulae do we use when calculating the number of organisms using capture recapture method. Some help I will give you brainliest
Answer:
Use the information on capture recapture method to calculate the total number of organisms in habitat.
First capture : 200
Second capture : 120
Number of organisms with second capture =40. The number of of organisms therefore is 600
Explanation:
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¿Cómo transformamos las fuentes de energía renovable en energía eléctrica necesarias para el desarrollo sostenible de nuestro país?
Answer:
Answer to the following question is as follows.
Explanation:
Natural energy is used to generate power in renewable technologies. Wind, wave, ocean, hydro, biomass, and solar energy are all potential sources of energy. ... A variety of technologies, such as floating offshore wind farms, biomass power plants, and hydroelectric systems, will be required to achieve this.
Renewable energy production and utilisation will enhance energy security, the environment, the economics, mechanical production, construction, transport, and industry, as well as assist in the creation of new employment. Solar, wind, and biomass energy can fulfil local energy demands while also helping to enhance environmental protection.
In intramembranous ossification, newly formed bone that is immature and not well organized is called ______.
Answer:
Woven bone.
Explanation:
In intramembranous ossification, newly formed bone that is immature and not well organized is called woven bone. Osteoblasts are the type of cells that is responsible for the formation of new bone. These osteoblasts also come from the bone marrow and are related to structural cells. They have only one nucleus. The process of bone formation is called osteogenesis whereas there are three stages of bone development i.e. proliferation, maturation of matrix, and mineralization.
Even though the tubers are genetically identical why the plants that grow from them may not be the same height ?
please explain
Please answer correctly.
Answer:
I've grown potatoes on top of loose earth that's covered by a thick layer of loose straw. It allows the green leafy parts to easily push through to the sunlight above while keeping developing tubers protected from light. I've grown them this way because I really enjoy the taste of fresh new potatoes and have no desire to store mature potatoes for winter. I want to get the most baby potatoes possible while not damaging the plants with tiny potatoes not big enough to eat yet. It also keeps the potatoes cleaner than if grown under the soil.
When I start lifting the straw back to pick the largest new potatoes, I can see the development of the other potatoes. While the biggest potatoes are 1 1/2 to 2 inches in size, others range in size all the way down to 1/4 inch or less.
When a specific garden plant blooms, most of the flowers open within a very short time period. Now think of tomato plants. The flowers continue to open over a period of months and both ripe tomatoes, large and small green tomatoes as well as flowers can all be found on the same plant. Not all the fruit will be ripe before cold weather kills the plant.
Potatoes are closely related to tomatoes and like tomatoes, not all the tubers will be full size when the plant dies back. So I'd say it's neither genetics nor environmental factors but the inherent life and growth cycle of potatoes that account for the tuber size difference.
The difference in the tuber size in plants of potatoes and tomatoes does not depend upon its genetics or environmental factors rather it depends upon the inherent life and growth cycle of the plant.
What is the growth cycle in potatoes?Growth cycles are the recurrent fluctuations in the series of deviations from the usual trend of the plant growth. Thus, the growth cycle contractions in the plant include slowdowns as well as absolute declines in the activity, whereas business cycles contractions include only the absolute declines or recessions.
Potatoes are the plant species which are closely related to tomatoes and just like tomatoes, not all the tubers will be full size when the plant dies back in time. So, it is neither the genetics nor the environmental factors but the inherent life and growth cycle of the potato plants that account for the tuber size difference in the plants which are genetically identical to each other.
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A small child managed to eat a bit of dirt while playing outside. Which of the following would prevent the child from getting sick from the bacteria ingested?
If there were not a pathogenic bacteria in the dirt
If the child had previously taken antibiotics for that type of bacteria
If the child did not have the vaccination to fight the bacteria
If the child’s cells had complementary receptor molecules that bind to the bacteria
Answer: option 2
Explanation:.....
Answer: If the child had previously taken antibiotics for that type of bacteria.
An experiment was conducted to determine whether a deficiency of carbon dioxide in the soil affects the phenotype of peas. Listed below are the phenotype codes where 1=smooth-yellow, 2=smooth-green, 3=wrinkled-yellow, and 4=wrinkled-green. Do the results make sense?
Answer:
No
Explanation:
The results of the phenotype do not make any sense in relation to the main aim of the experiment.
Smooth, wrinkled, yellow, green describe attributes relating to seed texture and flower colours in a result that simulates that of a plant breeding experiment, rather than a plant physiology experiment.
The determination of the effects of carbon dioxide deficiency in the soil on the phenotypes of peas is a physiological experiment. Hence, a result in the form of a plant breeding experiment would make not be relevant.
What type of microscope most likely produced the image of a mitochondrion?
Answer:
Mitochondria are visible under the light microscope although little detail can be seen. Transmission electron microscopy (left) shows the complex internal membrane structure of mitochondria, and electron tomography (right) gives a three-dimensional view.
Explanation:
comparison mitosis meiosis purpose ? ? number of parent cells ? ?
Explanation:
mitosis has 1 stage and meiosis had 2 stages.
Mitosis produces diploid cells (46 chromosomes) and produces 2 identical daughter cellsMeiosis produces happiness cells (23 chromosomes) and produces 4 genetically different daughter cellsAnswer:
Mitosis and meiosis are nuclear division processes that occur during cell division.
Mitosis involves the division of body cells, while meiosis involves the division of sex cells.
The division of a cell occurs once in mitosis but twice in meiosis.
Two daughter cells are produced after mitosis and cytoplasmic division, while four daughter cells are produced after meiosis.
Daughter cells resulting from mitosis are diploid (46 chromosomes), while those resulting from meiosis are haploid (23 chromosomes).
Daughter cells that are the product of mitosis are genetically identical. Daughter cells produced after meiosis are genetically diverse (genes swap during division).
Mitosis has 1 parent and meiosis produces 2 types of sex cells which fuse at fertilisation.
Energy from the sun is called _______ energy.
Answer:
Energy from the sun is called Solar Energy
Answer:
sunlight energy
Explanation:
also known as solar energy
Which of the following is a benefit of recreation activities?
A. Water pollution
B. Social interaction
C. Noise pollution
D. The spreading of weeds
Answer:
C Noise pollution
Explanation:
because organisms create noise.
Children in a preschool breathe deeply while running around in a park. They laugh a lot even when they are hurt, and they run to mummy for a snack. Name THREE characteristics of living organisms that these children illustrate while playing in the park.
Which type of selection is also known as diversifying selection because it tends to favor the survival of two or more different phenotypes in a heterogeneous environment
Answer:
Disruptive selection.
Explanation:
Disruptive selection is also called diversifying selection because it favor the survival of two or more different types of phenotypes in a particular environment. Disruptive selection describes changes in population in which extreme values for a trait are favored whereas the intermediate values are less favored. Due to the increase the variance of the trait which leads to the division of population into two distinct groups.
Photosynthesis happens in the?
Photosynthesis happens in the plants which have chlorophyll.
A new small molecule drug inhibits the function of the APC/C. If this drug were applied to cells undergoing the cell cycle, what do you think would be the result
Answer:
The cycle will not be completed.
Explanation:
The cell cycle will not be completed because the drug inhibits the function of the anaphase promoting complex whose functions is to regulate progression through the mitotic phase of the cell cycle and to control entry into S phase. If the drug inhibits the anaphase promoting complex, the cell cycles will not move in the forward direction to enter to the S phase in order to complete the cell cycle.
Bacteria of the genus Mycoplasma lack cell walls. What sort of environment do they require for survival
Answer:
biofilm
Explanation:
Answer:
isotonic
Explanation:
In hypotonic environments, the cells fill with water and bloat until they explode.
In hypertonic environments, the cells will lose their water and shrink.
In an isotonic environment, the cells would remain constant and thrive.
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The pollen
cone ...
A. contains the female egg cells,
B. contains the male gametophytes,
C. is usually much larger than the seed cone,
D. is the location of fertilization.
Answer:
The correct answer is B. The pollen cone contains the male gametophytes.
Explanation:
The cone is the reproductive organ of bare pollinators. Cones are not flowers but transformed stems or shoots without flower petals. In cones, male and female storages sit together in a shoulder-shaped arrangement on a short leg. Both males and females grow on pine. In male cones that are similar in most conifers, pollen matures, but the male cones wither quickly after the pollen has faded away.
turnips are root vegetables. turnips have been selectively bred from a wild plant called field mustard. field mustard plants do not have big, round roots like turnips. explain how turnips have been selectively bred from field mustard.
can anyone help me out? thx
the turnips have a model called Turnip's model that's why the turnips have been selectivity breed from field mustard.
Turnip is a type of root vegetables that belongs to the mustard family.
Turnips are ready to harvest 40 to 55 days after planting. If harvesting the leaves, they are ready when they reach four to six inches in height. If only harvesting the leaves, cut them from the plant when they reach the desired size, leaving one inch of leaves above the crown of the plant. More leaves will grow in their place.
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define 'mutation' and compare a 'gene mutation' to a 'chromosomal mutation'.
Answer:
Explanation:
Yes
