Answer:
ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information.
Explanatioim smart now give brainliest plz
Answer:
Ribose, found in RNA, is a "normal" sugar, with one oxygen atom attached to each carbon atom. Deoxyribose, found in DNA, is a modified sugar, lacking one oxygen atom (hence the name "deoxy"). In ribose, carbon atom #2 carries one hydroxyl group (colored red).
RNA is a ribonucleic acid, a nucleic acid present in all living cells. Its principal role is to act as a messenger carrying instructions from DNA for controlling the synthesis of proteins, although in some viruses RNA rather than DNA carries the genetic information.DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule.Explanation:
Most enzymes are proteins. Many cells make and use an enzyme called catalase to facilitate the decomposition of hydrogen peroxide (H2O2). The products of the decomposition are hydrogen (H2) and oxygen (O2). Stephanie is investigating the structure and function of catalase, and she is comparing catalase to other proteins. What can Stephanie predict will distinguish the structure of catalase from the structures of the other proteins she is studying? A. many regions made entirely of hydrogen and oxygen B. the chemical properties of the peptide bonds C. the types of amino acids it contains D. the sequence of amino acids it contains
Answer:
The correct answer is - B. the chemical properties of the peptide bonds.
Explanation:
The difference between the structures of catalase from other proteins depends on the chemical properties of the peptide bonds present in between the amino acids which decide the pH and temperature by their disruption. These bonds present between two alpha-amino acids when carboxyl of one amino acid interacts with the amino group of the other to form an amide-type covalent bond.
How do Hadley cells affect savannas climate
what position will kamala harris hold on sunday 20,2021
Answer:
Vice President?
Explanation:
Answer:
vice president she the first black woman,indian and woman to be vice president her innaguration was yesterday
Explanation:
can someone quickly answer this i need to finish so many other things lol
Explanation:
A eukaryotic cell contains membrane-bound organelles such as a nucleus, mitochondria, and an endoplasmic reticulum. Organisms based on the eukaryotic cell include protozoa, fungi, plants, and animals. These organisms are grouped into the biological domain Eukaryota.
Any organism which has a closed membrane for a nucleas is a eukaryotic cell.
(organisms who dont have a nuclear memebrane is called prokaryotic cell)
We have eukaryotic cells as we have nuclear membrane but a bactaria(a prokaryotic cell) doesnt have a nuclear memebrane and all of its nuclear substances are floating insdie it getting jumbled up.
What happens to the atoms in a scoop of ice cream as it melts? They decrease in temperature. They lose energy. They vibrate faster. They are held tightly in a fixed position.
Answer:
they vibrate faster
Explanation:
Answer:
They Vibrate Faster
Explanation:
Did it on Edge 2020
-Its C
James Watson and Francis Crick first discovered the structure of the DNA molecule in 1953. They discovered that the molecule has a shape specific to just that molecule. That shape can be best described as-
Answer:
A double helix
Explanation:
Why does calcium concentration matter to a cell?
Answer:
HOPE IT MAY HELP YOU
Explanation:
Calcium-based signaling is used in many cellular and neuronal processes to initiate rapid responses to extracellular signals. Cells therefore maintain tight control over intracellular Ca2+ levels, using a variety of channels and pumps.
Answer:
to answer your question it is
Explanation:
Calcium-based signaling is used in many cellular and neuronal processes to initiate rapid responses to extracellular signals. Cells therefore maintain tight control over intracellular Ca2+ levels, using a variety of channels and pumps. ... neuron
Which environmental policy must consider the expensive startup costs associated with building machines that harvest energy from clean sources? reducing air pollution regulating deforestation introducing new farming methods protecting ocean reefs
Answer:
i think its A
Explanation:
Answer:
A. reducing air pollution
Explanation:
edge 2022
Which is it?? DNA, RNA, or Both??
1. Single-Stranded
2. Double-Stranded
3. Nitrogen bases
4. Thymine
5. Uracil
6. Double Helix
A fungus cell is a prokaryotic cell. True or false?
2/3 divided by 1/6
Answer:
4
Explanation:
EASY 10 POINTS
Why do plant cells need chloroplasts?
Answer:
Chloroplasts are organelles found in plant cells and eukaryotic algae that conduct photosynthesis. Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant. In this respect they are similar to mitochondria, but are found only in plants and protista.
Explanation:
mark BRAINLIST!
thx
What are some species that are extinct? W
ecome extinct?
Answer:
Below
Explanation:
Most dinosaurs
Passenger Pigeon
Saber Toothed Tiger
Dodo
Great auk
Pyrean ibex
Giant Ground Sloth
Aurochs
Which of these is a characteristic of sexual reproduction?A)It takes place in all cells of the body.B)It forms exact copies of the parent cell.C)It results in offspring with genetic variation.D)It requires only one parent to form a daughter cell.
Answer/Explanation:
It results in offspring with genetic variation. 2 different mates must be used in sexual reproduction. This is because each person is different since cells are produced and combined differently in the original offsprings. If the two adults were exactly the same, the offspring would have the exact same cell traits. Likewise will be done for the offspring of the two adults. The genes may be similiar to the ones of the adults, but since combined it will not be an exact replica. In the long run sexual reproduction will result in an offspring with slightly different traits or genetic variation.
Density independent factors are
Answer:
Density-independent factor, also called limiting factor, in ecology, any force that affects the size of a population of living things regardless of the density of the population (the number of individuals per unit area).
Explanation:
please help, anything will do! thank you! I have provided eveyrhtign and did the lab (procedures).
What is the correct order of a food chain containing the following organisms: quail (bird), desert shrub, coyote, snake?
Answer:
desert shrub - quail - snake - coyote
Explanation:
the quail bird eats the desert shrub, the snake eats the quail, the coyote (a-pex predator in this chain) eats the snake.
3. What does the heading
represent?
Geologic Time Scale
Time Period Duration (Millions of Years ago)
Cenozoic 66-0
Mesozoic 252-66
Paleozoic 541-252
Trilobites appeared approximately 521 years ago and disappeared approximately 250 million years ago. During which era did the trilobites live?
a
Cenozoic
b
Mesozoic
c
Paleozoic
d
None of These
Answer:
C. Paleozoic
Explanation:
Trilobites are a group of extinct marine arthropods. Just like many animals from today, including crustaceans, spiders, and insects, they belonged to the phylum Arthropoda. They lived in the Paleozoic era.
We can make this conclusion based on the fact that the period they existed in (from 521 to 250 million years ago) mostly fits the period described as Paleozoic (from 541 to 252 million years ago). However, we can see that they went extinct in the Mesozoic (250 million years ago is more than 252 million years ago). Compared to the entire time they existed, 2 million years is a relatively small amount of time, which makes Paleozoic the correct option.
A red blood cell would burst if placed in a(n) ___ solution with no cell wall.
A. Isotonic
B. Hypertonic
C. Hypotonic
Please help! 10 points
Answer:B
Explanation:
PLSS HELP!!
1. cellular respiration produces
A. cellulose
B. oxygen
C. ATP
D. glucose
2. to produce starch, glucose molecules bond together through
A. photosynthesis
B. cellular respiration
C. dehydration synthesis
D. nucleotides
3. by which process does yeast produce the carbon dioxide responsible for bread rising?
A. photosynthesis
B. glycolysis
C. cellular respiration
D. dehydration synthesis
4. what is a component of amino acid not contained in starch?
A. amino acids contain carbon
B. amino acids contain oxygen
C. amino acids contains hydrogen
D. amino acids contain nitrogen
5. which two processes provide the glucose and nitrogen used to form amino acids in plants?
A. photosynthesis and nitrate absorption
B. cellular respiration and the citric acid cycle
C. photosynthesis and dehydration synthesis
D. glycolysis and nitrate absorption
Answer:
1. ATP
Explanation:
Cellular respiration may be defined as the chemical process of breakdown of food in the cell with the liberation of energy in the form of ATP.
Photosynthesis is a chemical process through which green plants most photosynthetic algae synthesize their own food in the form of glucose. While nitrate absorption is the process through which nitrogen in the soil is significantly absorbed by the root of plants in form of nitrates.
Fermentation is initiated with the process of glycolysis, but it does not involve the upcoming two stages of aerobic cellular respiration such as the Krebs cycle and oxidative phosphorylation.
Therefore, each of the above questions is well described above.
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which structure makes proteins using instructions from the nucleus
Answer:
ribosomes
Explanation:
Ribosomes are small particles of RNA and protein found throughout the cytoplasm. Proteins are assembled on ribosomes. The nucleus gives coded instructions to the ribosomes, so they know what proteins to build.
Alexis is using models of the cell membrane to compare the types of cellular transport. One
model shows a molecule entering through a protein pump. Which ope of cell transport is
being modeled?
A
diffusion because protein pumps are needed to move substances from a higher
concentration to a lower concentration
8
endocytosis, because protein pumps transport substances that are too large to
pass through the cell membrane
active transport, because protein pumps are needed to move substances against a
concentration difference
D
osmosis, because protein pumps allow water to cross the cell membrane
Answer:
C. active transport, because protein pumps are needed to move substances against a concentration difference
Explanation:
There are two major types of transport in living cells namely: passive transport and active transport. The passive transport moves molecules down a concentration gradient and hence, do not need energy (ATP) to occur. However, on the other hand, ACTIVE TRANSPORT moves substances against their concentration gradient, thus, require energy input.
Active transport makes use of PROTEIN PUMPS to achieve this process. Hence, in this case where Alexis is using models of the cell membrane to compare the types of cellular transport. The model that shows a molecule entering through a protein pump is modelling ACTIVE TRANSPORT.
What is the role of adenosine triphosphate (ATP) within a cell?
A) Release carbon dioxide
B) Biological molecule that stores energy
C) Use glucose
D) Controls chemical reactions
Answer:
Its B. Biological molecule that stores energy
Leaves are composed of vascular tissue that brings water in so that ground tissue can conduct photosynthesis. Based on this information, what level of organization describes leaves?
Tissue
Tissue
Organ
Organ
Organ system
Organ system
Organism
Organism
Answer:
Organism
Explanation:
All the things listed are the characters of an organism
how do the weight of objects on earth compare the weight of the objects on the moon why do you think this is
Answer:
Being that the moon has a gravitational force of 1.622m/s 2, we multiply the object's mass by this quantity to calculate an object's weight on the moon. So an object or person on the moon would weigh 16.5% its weight on earth. Therefore, a person would be much lighter on the moon. Conversely, a person is 83.5% heavier on earth than on the moon.
Explanation:
hope this helps you out love!! <3
Answer:
weight of objects on EARTH> weight of objects on MOON
Explanation:
weight= mass * gravity
assuming both objects have the same mass, the environment with greater gravity will result in a greater weight
gravity of earth > gravity on the moon
so
weight of objects on EARTH> weight of objects on MOON
List three ways in which a sperm cell differs from other cells in the
human body
Adaptations that help an organism survive appear quickly. True or False? And why
Answer:
false
Explanation:
is not worth it to do that
According to the theory of natural selection, features that may be passed down help animals adapt to their surroundings more successfully than their kin.
What condition that make organism adaptive?Adaptations are passable traits that improve an organism's capacity to endure and procreate in a given environment. An organism can manage in harsh settings, locate food and water, and protect itself by adapting.
This is the outcome of a process called natural selection. A species' nature gradually changes as a result of natural selection in order for it to fit into the niche.
If a species becomes extraordinarily well adapted to its habitat and the environment does not change, it can survive for a very long time before going extinct.
Therefore, it is false that, Adaptations that help an organism survive appear quickly.
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If a father has type A blood and the mother has Type AB blood, they would NOT have a child with which of the following blood types?
AB
A
B
O
Answer:
If a father has type A blood and the mother has type AB blood, they cannot have a child with blood type O, although depending on the father's genotype, they may not have children with a B blood type either.
Explanation:
Blood type is determined by the presence or absence of surface antigens A and B, which is genetically determined and establishes the pattern of inheritance.
Alleles that define the presence of antigens A and B are co-dominant, while the absence of antigens - as in blood type O - is a recessive trait.
Type A contains antigen A and its genotype can be A|A or A|O. Type B contains the B antigen, whose genotype can be B|B or B|O. Blood type AB contains both antigens and a single genotypic expression A|B Type O blood lacks surface antigens, with genotype O|O.The father with blood type A can have two genotypes, A|A or A|O, which raises 2 possible scenarios:
1. Father A|O with mother A|B
Alleles A O
A A|A A|O
B A|B B|O
In this case there is no chance of having a child with blood type O, 50% chance of having children with blood type A, 25% B and 25% AB.
2. Father A|A with mother A|B
Alleles A A
A A|A A|A
B A|B A|B
50% chance of having a child with blood type A and 50% with blood type AB. In this case there is no chance of having children with blood type O or B.
During a murder investigation, the medical examiner tests the contents of the
victim's stomach to try to identify their last meal and establish a connection to a
suspect. The contents tested using Lugol's iodine turned a dark purple color
which indicates the presence of starch. This test indicates which of these
macromolecules was present in the victim's last meal? *
A. Proteins
B. Carbohydrates
C. Lipids
D. Nucleic Acid