Answer:
mutations
Explanation:
Each statement explains a cause that would prevent a plant not to bear seed in its life cycle except:
The plant may be harvested before it bears any seed.
The plant will grow to full maturity and produce flowers instead.
The plant may die before it reaches maturity.
The mature plant could be affected by a drought preventing seeds from growing.
best answer gets brainliest
Answer:
The answer for this is the swcond one
Which of the following best describes the coronary circuit?
coronary veins, arteries, heart wall, coronary arteries
lungs, atria, ventricles, coronary veins
atria, ventricles, coronary arteries, lungs
aorta, coronary arteries, heart walls, coronary veins, lungs
Answer:
D: aorta, coronary arteries, heart walls, coronary veins, lungs
Explanation:
edge biology assignment
Answer:
D
Explanation:
ill give you a Brainliest if it is right
This picture shows some fortified cereal in a bowl.
What mineral is most likely added to this cereal to increase its nutritional value?
A) talc
B) iron
C) quartz
D) copper
B) iron
Fortified cereal usually contains iron, calcium, and sometimes vitamin D
Answer:
The correct answer is iron.
I had to do the same thing and I got it right.
Explanation:
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WILL MARK BRAINLIEST!!!!
This is a Earth Science course 4.02
2. Mariner 4 and 9 and Viking 1 and 2 probes needed enhanced cameras and wireless communication equipment to take images of Mars's surface and send them back to Earth. According to the video, how did improving our technology lead to new discoveries about Mars?
3. Using internet resources, describe how advances in imaging and wireless communication for space exploration have led to changes in imaging devices and communication on Earth.
4. Mars Odyssey and Mars Express required spectrometric equipment that could analyze Mars's atmosphere and surface composition and temperatures. Using internet resources, describe some home or business technologies that use spectrometric equipment to analyze atmosphere or temperature.
5. Using internet resources, research one space probe described in the video. Describe its goals and justify its purpose by explaining how it helped advance our understanding of the universe.
Answer:
answers to Video 1 and 2 don't copy word for word
Explanation:
Video 1 questions:
1.Viking 1 and Viking 2 transmitted six years of panoramic views from Mars to Earth, while the pathfinder spent three months transmitting large quantities of Martian environment data. For study, the Viking 1 and 2 probes sent photographs of the Martian landscape back to Earth, while the pathfinder was the first robotic rover to reach the Martian atmosphere directly.
2.It contributed to the discovery that life on Mars once actually existed because of evidence of water being found underground at the Martian poles.
3.it helped us to discover that life on Mars once probably existed because of signs of water being found underground at the Martian poles.
4.Spectrometric equipment that could analyze Mars' atmosphere was needed by Mars Odyssey and Mars Express.
5.A probe is a spacecraft that flies across space to gain information about science. Probes have no astronauts. Probes submit data back to earth for analysis by scientists. Voyager 2 and many more are one example of a space probe.
Video 2 questions:
1.Radio waves are a type of electromagnetic radiation that is best recognized for its use in Technologies for contact, such as television, cell phones and radios. Such devices receive radio transmitters In the speaker, waves and transform them to mechanical vibrations to produce sound waves.
2.A radio telescope is essentially a telescope equipped to receive space-based radio waves.
3.It has three numerical elements, each of which has one or more antennas to absorb the incoming radio waves. Two is a receiver and amplifier to lift to a detectable level the very weak radio signal. And lastly, a recorder to hold a signal log.
4. An electromagnetic wave is a radio wave. The speed of light flows with it. In the electromagnetic spectrum, it is the longest wavelength. This is used in RADAR for wireless and radio communication that is obtained by an antenna, and radio waves are also used. RADAR is a method of tracking used to determine object velocity.
5.Through studying the frequency, power, and timing of radio emissions from these objects, radio telescopes help advance our knowledge of the universe, and astronomers will enhance our understanding of the universe.
Answer:
1. Viking 1 and Viking 2 probes transmitted panoramic views of the red and rocky soils back to Earth after six years later. The Pathfinder probe sent back large amounts of data of the environment especially about climatic variations in only three months. You can tell the technology was very different between these two because of how long it took for each probe to gather data.
2. In 1965, Mariner 4 and 9 probes found geological formations (Olympus Mans). The Mariner 4 sent back the first image of Mars. The Mariner 9 found erosion marks that indicated that there was once water on Mars. In 1976, the Viking 1 and 2 probes transmitted panoramic views of the soils. From 1965 to 1976, they were able to discover more about Mars over improving the technology. When the Viking probes were launched, we discovered more than when the Mariner probes were launched. For example, we were able to uncover how red and rocky the soils were.
3. We now receive information differently thanks to wireless technology. For instance, we now have computers and phones that let us contact someone by simply pressing a button. GPS may now be used to display various places. Additionally, we can now forecast the weather. We can know the weather for every day because forecasters have access to a ton of technology. Thus, we now substitute archaic methods for digital ones.
4. Fire alarm and air conditioning systems include technologies that incorporate various communication systems that enable them to react to changes in the atmosphere or temperature. Therefore, when the atmosphere's temperature fluctuates, they are utilized.
5. Viking 1 and 2 were used to find life on Mars. Since they launched the Mainer probes, they found that there was once water on Mars which later created the Viking 1 and 2 probes for further investigation. Along with finding life on Mars, they were also created to take better photos of the planet.
Lila observed that a pond with clear water was covered up with a green algae within a week. By which method of reproduction did the algae spread so rapidly?
a) Budding
(b) Sexual reproduction
(c) Fragmentation
(d) Pollination
Answer:
answe is C. fragmentation
List the abiotic factors that are
important for an ecosystem to
function.
Answer:
water, the plants need water to survive, as well as the animals
Explanation:
PLZZZZZZZZZZZZZZZZZZZZZZZ HELP ME I BEGGINNG PLZ HELP!!!!
List at least two body systems that are affected by the following conditions. Briefly explain your choices.
A nose, red from frequent tissue use.
Common cold
An X-ray of a broken bone.
Broken bone
An inhaler.
Asthma attack
A patch of sunburned skin
Sunburn
Answer:
Respiratory and skeletal
Explanation:
Respirator is effected by an Asthma attack. A broken bone effects the skeletal system.
What might an elevated skin temperature indicate beside a fever from a cold, flu, or other typical viral disease? How might you test for an elevated temperature?
Answer: Fever is a common symptom of illness. The Centers for Disease Control and Prevention (CDC) defines fever as a temperature above 100.4° F, though children often run higher fevers than adults.
Many types of infection can cause fever, as your body will increase temperature to effectively fight off the virus or bacteria causing the infection. These fevers will usually resolve themselves as your body works to get rid of the foreign invader.
Explanation:
Fever is one of the common symptoms of different illnesses and is also a defense mechanism of the body. A temperature above 100.4° F is considered as fever.
Fever can be caused due to:
1. The rise in the skin temperature is generally due to the infection from bacteria or viruses that can result in the flu, cold, or certain viral diseases. The fever can be an indication of any infection or inflammation in any part of the body.
2. The activities like exercising can also lead to an increase the body temperature. The contraction of muscles releases 20% energy and the rest 80% is converted into heat energy. The heat is then circulated to different parts of the body, causing an increase in the temperature.
3. The rise in the temperature can be measured by the thermometer. It is a device that measures body temperature either digitally or traditionally.
Thus, the cause of fever can be a defense mechanism, exercise, and infection from the pathogen.
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Determine if the term is a cell, tissue, organ, or organ system. A tube passing from the mouth to the lungs______ *
cell
tissue
organ
organ system
Answer:
organ
Explanation:
A tube passing from the mouth to the lungs is an organ
Please help me, I need help.
Answer:
D?
Explanation:
yo use science to figure vaccines for viruses and medicines
What happens to biodiversity
and ecosystems when the
environment changes?
Purple flowers are dominant over white flowers. A heterozygous purple flower is crossed with another heterozygous purple flower. What will the ratio of purple to white be?
3:1
1:3
2:2
4:0
Answer:
The ratio will be 3:1
Explanation:
edge 2020
The ratio of the purple to white flowers produced from a cross between two heterozygous purple flowers will be 3:1. Thus, the correct option will be A.
What is a Genetic cross?A genetic cross is the deliberate breeding of two different individuals which results in the production of offspring that carry part of the genetic material from each of the two parents. The parent organisms must be genetically compatible to each other and may also be from different varieties or two closely related species.
Genetic cross diagrams are made using Punnett squares that show how likely the offspring are to inherit the characteristics from both of their parents.
In the given condition, two heterozygous purple flower parents are crossed. Here, the purple flower color is dominant over white flower color and from this cross, the organisms produced in 3:1 ratio with three purple flower plants and one white flower plant.
Therefore, the correct option will be A.
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Which of the following parasites completes their life cycle by mating, engorging from feeding, then dropping to the ground to lay eggs in the environment?
lice
mites
ticks
roundworms
Answer:
ticks
Explanation:
Humans and other animals regulate cell growth and cell division. Sort these cells by category:
Muscle cells Nerve cells Skin cells Blood-producing cells Digestive tract cells Cells that do not divide once they have developed
Cells that grow and divide throughout life
Answer:
Explanation:A few types of differentiated cells never divide again, but most cells are able to resume ... life to replace cells that have a high rate of turnover in adult animals. Cell proliferation is thus carefully balanced with cell death to maintain a constant ... Cells of this type include skin fibroblasts, smooth muscle cells, the endothelial cells ...
The cells that do not grow or differentiate once they are developed are usually in the internal structures.
Muscle cells
Nerve cells
Digestive tract cells these cells once developed do not divide once they have been developed.
Skin cells
Blood-producing cells are the cells that are growing and dividing throughout the life.
What is digestive tract ?It is comprised of all the organs that are involved in the digestion along with all the glands that are responsible for regulating the process of digestion.
Muscles once grown do not grow bigger or smaller in size but the only difference is that they would have the different deposition with time may be like some people especially the gym freaks have the habit of growing muscles.
Skin cells and the blood producing cells that are the cells that grow and divide throughout the life as the process is involved in the lifetime activity where the involvement of differentiation after the multiple division of the cell division.
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DNA activities occur during specific parts of the cell cycle. When does DNA synthesis occur?
O S phase of intephase
O G1
O G2
O Mitosis
Answer: s
phase of interphase
Explanation:
Which mutation is the most harmful?
Why?
Answer:
The mutation is the most harmful is radiation and the one that causes death. It can come from many different chemicals, metals, and from bones. It can also be DNA.
Explanation:
So, what is actually produced during the light reaction? Do you know the chemical
equation?
Answer:
The light-dependent reactions convert light energy into chemical energy, producing ATP and NADPH. 5. The light-dependent reactions can be summarized as follows: 12 H2O + 12 NADP+ + 18 ADP + 18 Pi + light and chlorophyll yields 6 O2 + 12 NADPH + 18 ATP.
Water is oxidized, electrons are transported from water to NADP+, and ATP is generated during the light processes.
What is light reaction?The light reactions are the first step in photosynthesis. The pigment chlorophyll in the thylakoid membranes of the chloroplast absorbs the energy from sunlight during these reactions. The energy is subsequently briefly transferred to two molecules, ATP and NADPH, which are used in photosynthesis' second stage. Two electron transport networks produce ATP and NADPH. Water is used in the light processes, and oxygen is created. Because the process requires sunlight to begin, these reactions can only take place during daylight hours.the reaction is provided in the image below:
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The radioactive rock inside of the earth
A) is hot
B) is caused by volcanoes
C) glows in the dark
D) is cold
What is the genetic code of the Reading strand
Answer:
DNA
Explanation:
The genetic code reads DNA sequences in groups of three base pairs, which means that a double-stranded DNA molecule can read in any of six possible reading frames--three in the forward direction and three in the reverse. A long open reading frame is likely part of a gene.
The genetic code (genome) of the reading strand is ATGACG, The DNA sequence is read in the 5′-3′ direction. Genes or other sites can be positioned upstream (towards the 5′ ends) or downstream (towards the 3′ ends) on a DNA strand.
What is genetic code?A double-stranded molecule that makes up the majority of chromosomes and holds the genetic code is DNA, sometimes referred to as deoxyribonucleic acid.
The nucleotides of DNA or RNA are arranged in the genetic code. Codons are made up of three-base groups and each one represents an amino acid (or start or stop).
Once a stop codon is reached, the codons are read in order starting with the start codon. Universal, clear-cut, and redundant describe the genetic code.
Therefore, the genetic code (genome) of the reading strand is ATGACG.
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6. The diagram to the right represents evolutionary
pathways of seven groups of organisms alive today. Which
two living species would be expected to have the most
similar proteins?
(1) A and C 12) B and C
(3) E and F (4) H and M
Answer:
e and f
Explanation:
High school and collage students answers only.
What role do enzymes play in the chemical reactions of living organisms?
Answer:
Enzymes are proteins that act as biological catalysts. They speed up chemical reactions that take place in cells. Enzymes act by lowering the activation energies, which has a dramatic effect on how quickly reactions completed.
Explanation:
basically they lower the activation energy and increase the rate of chemical reactions.
which molecule is your cell membranes made of
A.
lipids
B.
carbs
C.
proteins
Answer:
Lipids i.e also called fatty acids
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Wildflowers bloom earlier than large trees. This helps wildflowers compete for _____.
(A) air
(B) water
(C) light
(D) food
Answer:
d
Explanation:
Identify three transport processes in cells that do not require energy
Answer:
Answer. Three transport processes that do not require energy are; diffusion, osmosis and facilitated diffusion.
Explanation:
17. Which of these make up the primary link between a gene and the expression of a trait?
A proteins
B sugars
Clipids
D vitamins
Answer:
sugars
Explanation:sugers because they are bad to health
The following makes up the primary link between a gene and the expression of a trait: proteins, which are in Option A, as the gene is first converted into mRNA and later into the protein that expresses.
What is the significance of the gene and protein?A gene provides the instructions for making a specific protein that is present on the DNA and that plays a crucial role in the expression of traits, and the proteins and other enzymes are expressed in this way, such that a gene that codes for the production of a specific enzyme will result in the expression of a trait.
Hence, the following makes up the primary link between a gene and the expression of a trait: proteins, which are in Option A, as the gene is first converted into mRNA and later into the protein that expresses.
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4. From what structures do the spindles originate?
do honey bees reproduce sexually or asexually?
DNA replication results in two separate DNA molecules. How are the DNA molecules at the end of the process related to the DNA molecule at the beginning of the process.
The DNA double helix. Helices open as hydrogen bonds disintegrate. The creation of a new, complementary strand uses the template provided by each DNA strand.
What is the regulation of DNA replication process?A new and an old chain of nucleotides is combined to form two DNA molecules as a result of DNA replication.
Because half of the chain is made up of the original DNA molecule and half is new, DNA replication is referred to be semi-conservative.
With one new and one old strand in each, replication creates two identical DNA double helices.
The production of a primer, a brief section of RNA that serves as the beginning point for the synthesis of fresh DNA, follows.
Therefore,DNA helicases unwind DNA during DNA replication at locations known as origins where synthesis will begin.
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An organism has the following characteristics:
It is multicellular.
It is composed of eukaryotic cells that are organized into tissues, but lack cell walls.
It obtains its nutrients by ingestion.
It reproduces by sexual reproduction.
What kingdom does this organism belong to?
Answer:
animal
Explanation:
yes
The kingdom this organism belongs to is an animal. Also, the organism should be considered as multicellular, eukaryotic cells, etc.
What kingdom does this organism belong to?All animals should be considered as the members of the Kingdom Animalia, which we called as the Metazoa. This Kingdom does not comprise prokaryotes that involved bacteria or protists that involved unicellular eukaryotic organisms.
Hence, The kingdom this organism belongs to is an animal.
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What are trophic levels?
I need an easy definition
Please help
Answer:
"The trophic level of an organism is the number of steps it is from the start of the chain."
Explanation:
Hope this helps. Google as source.