What is the ultimate source of energy for all living things? A. Food B. The sun C. Water D. Oxygen
Answer:
B, The sun.
Explanation:
The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs.
To reproduce , female elephants produce eggs and male elephants produce sperm. Off spring are produced by the fusion of an egg with a Sperm cell . Which statement is true about the offspring?
Answer:
Answer: C. The offspring are genetically distinct from the parents because they are produced by sexual reproduction. Explanation: Sexual reproduction occurs through the fusion between an egg and a sperm cell
please answer 5,6, and 7 for 20 points plus brainliest :) link=reported, those dont help
Rickettsia typhi is a species of infectious bacterium that is an obligatory intracellular parasite. This means that, similar to viruses, R. typhi cannot reproduce and survive outside of a eukaryotic cell. Why do we consider viruses nonliving, but rickettsia alive
Answer:
Due to its characteristics.
Explanation:
We consider viruses are nonliving, but rickettsia are living because rickettsia have the characteristics of bacteria which is a living and has unique structure. It also survives outside the living cell but not for long time. The rickettsia remain in their shape and does not form crystalline structure like viruses outside the cell. If there is suitable environment for rickettsia, it can survive in that environment.
select the true statement about dehydration synthesis or hydrolysis
1.) during hydrolysis, an enzyme joins two water molecules, producing polymer
2.) during dehydration synthesis a water molecule breaks apart two monomers
3.) during dehydration synthesis and enzyme joins two monomers water is a byproduct
4.) during hydrolysis, a monomer breaks apart into two polymers,water as a byproduct
The true statement is that during dehydration synthesis, an enzyme joins two monomers and water is a byproduct.
WHAT IS DEHYDRATION SYNTHESIS:
Dehydration synthesis is a reaction that involves the joining together of two or more smaller molecules to form a much larger and complex molecule accompanied by the release of water (H20). During dehydration synthesis, the hydrogen (H) of one monomer combines with the hydroxyl group (OH) of another monomer releasing a molecule of water.An example of dehydration synthesis is the reaction of glucose molecules to form larger polysaccharides.
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If one strand of DNA has the sequence 5'ATCG 3', what would be the sequence of the matching DNA strand
Answer:
Each strand is made up of a sequence of four nucleotides, A, C, G, and T. The order of the nucleotide sequence encodes genetic information. Since the nucleotides pair in a predictable way — A with T, and C with G — each strand of the DNA is always complementary to the other.
Answer:
3' TAGC 5'
Explanation:
A-T, C-G
Question 9 help please
Please if you can help me with the food biotechnology book by Jonathan Delgado and Javier Rocha
Answer:
send me the questions, i'll help.
Explanation:
I need some help with summarizing the following topics: cells and cell processes; photosynthesis and respiration; genetics; evolution; ecology; human body.
Answer: Read below!
Explanation:
Cells: the smallest structural and functional unit of an organism.
Cell Processes: any process that is carried out at the cellular level, but not necessarily restricted to a single cell.
Photosynthesis: the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water.
Respiration: a process in living organisms involving the production of energy.
Genetics: he study of heredity and the variation of inherited characteristics.
Evolution: the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
Ecology: the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
Human Body: the physical substance of the human organism, composed of living cells and extracellular materials and organized into tissues, organs, and systems.
g Knowing if a bacterium is Gram-positive or Gram-negative is important in medicine because it tells us what type of antibiotic will be used (e.g., penicillin for Gram-positive bacteria and mycins, like streptomycin, for Gram-negative bacteria). Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a True b False
Answer:
This is true.
Explanation:
Knowing whether a bacteria is gram positive or negative will help to narrow down the types of pathogen it could be and will determine which antibiotics will be effective against it.
Knowing whether a bacteria is gram positive or gram negative will help to understand the kind of infection it may cause and thus help in determining the kind of antibiotic it needs.
What are gram-positive and gram-negative bacteria?The bacteria that have a thick layer of peptidoglycan but no outer lipid membrane are called Gram-positive bacteria. The bacteria that have a thin layer of peptidoglycan and an outer lipid membrane are called gram-negative bacteria.
Gram-positive bacteria do not have an outer lipid membrane and hence they retain the crystal violet in the thick peptidoglycan during gram staining and it is fixed by iodine.
The outer lipid membrane that is possessed by the Gram-negative bacteria does not allow them to retain the crystal violet and hence only the counterstain safranin is visible in the gram staining method.
The technique of Gram staining was developed by the bacteriologist Hans Christian Gram in 1884. While this method cannot tell the specific strain of a bacteria, it can be used as a quick and easy way for narrowing down the basic criteria of distinguishing the bacteria among the two main groups.
Therefore, knowing whether a bacteria is gram positive or gram negative will help to understand the kind of infection it may cause and thus help in determining the kind of antibiotic it needs.
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What is the role Of DNA ligase in the elongation Of the lagging strand during DNA replication?
a. It stabilizes the unwound parental DNA.
b. It unwinds the parental double helix.
c, It joins Okazaki fragments together.
d. It synthesizes RNA nucleotides to make a primer
Answer:
C
Explanation:
Ligase is like GLUE so yea
Which of the following limits the species of plants that can grow in an area?
animals
weather
atmosphere
biogeography
weather limits the species of plants that can grow in an area.
hope this helps!!
what is a nucleic acid that contains the genetic information for heredity in most organisms.
Answer:
deoxyribonucleic acid Or ( DNA)
Explanation:
DNA contains the genetic information for heredity in most organisms.
Have a wonderful Day!
Answer:
there's all the answers
Explanation:
Most typically, the order in which the steps of scientific investigation are applied is:
a. Controlled experiment, hypothesis, analysis of results, observations, questions,
conclusions
b. Observations, controlled experiment, hypothesis, analysis of results, conclusions,
questions
c. Questions, observations, hypothesis, controlled experiment, analysis of results,
conclusions
d. Questions, observations, analysis of results, controlled experiment, conclusions,
hypothesis
Answer:
C
Explanation:
The borders of plates never change. True False
Answer:
Explanation:
False
Answer:
false
Explanation:
Help plz plz plz plz plz plz plz plz plz can someone tell me the percentage
Human egg and sperm cells contain 23 chromosomes and are called______
A. gametoploid
B. devoid
C. haploid
D. diploid
Answer:
Haploid
Explanation:
Human egg and sperm cell contain 23 chromosome and are called haploid.
Answer:Haploide
Explanation:
Which of the following best describes the role of meiosis?
1Creating egg and sperm cells (gamete sex cells).
2Producing more cells for an organism to grow bigger.
3Producing more organelles.
4Creating new cells that are
Answer:
eeeee
Explanation:
fdsrt fdsss fddssscdddd fddr
Which statement describes a constructive force that shapes Earth's surface?
O A glacier pushes rocks and soil.
O Tectonic forces push mountains up.
Ocean waves erode rock and create a cliff.
O A stream carries away sediment from banks.
Answer:
Tectonic forces, underwater volcanoes and glaciers,ocean waves and stream act as an agent of erosion are some examples of constructive forces that shape Earth's surface. Explanation: Earth is a dynamic and ever-changing planet.
Explanation:
Answer:
Tectonic forces push mountains up.
Explanation:
just took the test
How does the age of a tree relate to its size?
Answer:
Árbol de envejecimiento fórmula La fórmula de envejecimiento del árbol puede estimar la edad de un árbol multiplicando el diámetro del árbol por su factor de crecimiento. Es más exacto con bosque y árboles rurales en lugar de árboles urbanos, que a menudo se cultivan en condiciones menos ideales que pueden atrofiar su crecimient
Answer:
If you know when the tree was planted, you can easily and accurately determine its age. The second most accurate way to estimate tree age is to count the annual rings of wood growth. Annual rings can be counted using two different methods. You can extract an increment core from the tree using an increment borer.
Explanation:
Rats can be a real danger when they find
their way into your food storage spaces? yes or no
Answer:
yes, it could be something that's old or something rats cant eat/drink
Explanation:
How does fluoroquinolone help?
List four examples of how you think elderly people living in care facilities can benefit from person centered care
Answer:
1. They can have constant trained medicals around them, which is good because they could have emergencies.
2. They won’t be alone in there houses, but instead have people and life surrounding them.
3. They’ll have people taking care and looking out for them, other than family.
4. They’ll be comfortable, more happy, and more likely to live a happy end to their lives.
Explanation:
What process takes place at the boundary between the capillaries and the alveoli?
AIR
Bronchiole
Alveoll
Small blood
vessels (capillaries)
A. An exchange of blood and lymph between the circulatory and
lymphatic systems
B. An exchange of oxygen and carbon dioxide between the
circulatory and respiratory systems
C. Reabsorption of water into the circulatory system from the
excretory system
D. An exchange of air between the circulatory and respiratory
systems
Answer:
B because aveoli are part of the lung Branch and capillaries take in the oxygen with blood?
Explanation: my guess since carbon dioxide also needs to be excreted out of lungs.
balance the following chemical equation making sure to apply the principle of the law of conservation of mass
Answer:
2Zn+ 4HCl=2ZnCl2 +2H2
CH4+2O2=CO2+2H2O
Fe + 3NaBr=FeBr3+3Na
The balanced chemical equations are given below:
[tex]Zn + 2HCl[/tex] → [tex]ZnCl_2[/tex] + H2. [tex]CH_4 + 2O_2[/tex] → [tex]CO_2 + 2H_2O[/tex]. [tex]Fe + 3NaBr[/tex] → [tex]FeBr_3 + 3Na[/tex]. What do you mean by Chemical equation?Chemical equations may be defined as an illustration of a chemical reaction by using symbols and the amount of substance used in the reactant to form a desirable product.
In the first reaction, two atoms of hydrogen are there on the product side while only one is there is the reactant side, so to balance them, you put 2HCl, the reaction is balanced now.
In the second reaction, four atoms of hydrogen are there on the reactant side while only two are on the product side, so to balance them you put 2H2O on the product side, now balance the oxygen atom and put 2O2 on the reactant side. The reaction is balanced now.
In the third reaction, bromine has three atoms on the product side, to balance them you need to put 3NaBr on the reactant side, now to balance sodium atoms put 3Na on the product side. The reaction is now balanced now.
The principle of the law of conservation of mass states that mass is neither be created nor destroyed in chemical reactions.
Therefore, the balanced chemical reactions are described above.
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how is sound recorded
Answer:
Sound is made up of waves in the form of vibrations in the air. Or you can use the signal to record the sound on magnetic tape. This works by a similar process of moving a magnet, but that magnet causes a magnetic tape to gain magnetization in patterns that represent the sound.
In a digital recording system, sound is stored and manipulated as a stream of discrete numbers, each number representing the air pressure at a particular time. The numbers are generated by a microphone connected to a circuit called an ANALOG TO DIGITAL CONVERTER, or ADC.
hope this helps
have a good day :)
Explanation:
Answer:
sound is made up of waves in the form of vibrations in the air, and can be detected by the human ear. Using magnets analoque technology takes sound waves and turns them into electrical pulses. When a metal conductor is moved inside the magnetic field an electric current is produced in that wire.
Explanation:
someone please help asap!!
Answer:
b
the graph has a positive gradient
A car breaks down 2.1 m from the shoulder of the road. 1.99x103 N of force is used to push the car off the road. How much work has been done on the car?
Answer:
Joules
Explanation:
W = F * d
F = 1.99*10^3 N
d = 2.1 m
W = 4179 Joules
The most common living bacteria today are
Answer:
eubacteria.
Explanation:
Which statement provides the best description of the relationship between
primary consumers and producers?
A. Primary consumers provide producers with the chemical energy
they need
B. Primary consumers eat secondary consumers, which rely on
producers for food.
C. Producers and primary consumers compete with each other for
food sources.
D. Producers provide primary consumers with the chemical energy
they need
SUBMIT
D. Producers provide primary consumers with the chemical energy
they need