Answer: A point mutation is when a single base pair is altered. Point mutations can have one of three effects. First, the base substitution can be a silent mutation where the altered codon corresponds to the same amino acid.
Explanation:
The functions of two physical structures of plants are described below:
Structure 1: Holds the leaves of the plant toward the light.
Structure 2: Helps reduce water loss.
What statement is true about the functions?
Structure 1 is the stamen and Structure 2 is the pistil.
Structure 1 is the stem and Structure is the waxy covering.
Structure 1 is the pistil and Structure 2 is the fuzzy hair.
Structure 1 is the waxy covering and Structure 2 is the stamen.
Answer:
b
Explanation:
the structure will continuously move and compete for sunlight
the wax is so that the moisture has to go thought it and will either be part of the wax or be absorbed back into the plant
The statement which is true about the functions is structure 1 is the stem and structure 2 is the waxy covering with respect to their functions.
What do you mean by Water loss?Water loss in plants may be defined as the process of evaporation of water to the atmosphere from the leaves of a plant in the form of water vapor.
The stem is the part of the plant that holds the leaves of the plant toward the source of light. While the waxy covering is responsible for the process of transpiration in the plants.
Therefore, the statement which is true about the functions is structure 1 is the stem and structure is the waxy covering.
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WILL GIVE BRAINIST
Question 1 Only
Years after the lava from an erupting volcano destroyed an area, lichens started to grow in that area. These were gradually replaced by grasses, shrubs, conifers, and finally by a deciduous forest. In this sequence of events, the lichens functioned as What?
(Answer if you know.)
A. primary consumers
B. abiotic factors
C. pioneer organisms
D. climax organisms
Answer:
I'm pretty sure it's c
Explanation:
I'm 80% sure its c I learned this last month
In this sequence of events (ecological succession), the lichens functioned as a class of pioneer organisms (Option C).
What is ecological succession?Ecological succession refers to the progressive emergence of different organisms and/or species in an ecosystem.
The ecological succession occurs after a period of ecological disturbance in the ecosystem.The ecological succession is fundamental for recovering the homeostasis of the ecosystem.In conclusion, in this sequence of events (ecological succession), the lichens functioned as a class of pioneer organisms.
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A diploid cell (2N) in G1 phase of the cell cycle has how many alleles of each gene?
Please help
Answer:
46 chromosomes
Explanation:
I. G1 phase (Gap 1) - Cellular contents excluding the chromosomes, are duplicated. II. S phase (DNA Synthesis) - Each of the 46 chromosomes is duplicated by the cell.
A major cause of genetic variation within a species is the result of -
if a strand of DNA has the sequence ATGCGATCCGC, then the sequence of the MRNA molecule transcribed from it is
Answer:
DNA: ATGCGATCCGC
mRNA: UACGCUAGGCG
Explanation:
The deoxyribonucleic acid (DNA) is a double-stranded helix, where each strand is composed of four nitrogenous bases: Adenine (A), Thymine (T), Guanine (G) and Cytosine (C). The two strands are held together by hydrogen bonds and they interact in the following way: Adenine (A) always pairs with Thymine (T) through two hydrogen bonds, while Guanine (G) always pairs with Cytosine (C) through three hydrogen bonds. During transcription, a DNA strand of the double helix DNA molecule is used as template to synthesize a complementary RNA molecule, usually, a messenger RNA (mRNA) which is then used to create a protein by the process of translation. Moreover, also during transcription, Thymine (T) bases are replaced by Uracil (U) bases in the RNA molecule.
The ocean is the largest reservoir of carbon on Earth. Which of the following would most likely store carbon for the longest amount of time?
Calcium carbonate shells of marine organisms, like coral, oysters, and clams
Dissolved CO2 in surface ocean water
Dissolved CO2 in deep ocean water
Carbon stored in the rocks
Carbon is stored for the longest amount of time as Calcium carbonate shells of marine organisms, like coral, oysters, and clams.
What is the carbon cycle?The carbon cycle is a cycle of how carbon is recycled between the atmosphere and the living and non-living part of the earth.
The carbon reservoir of the ocean forms part of the carbon cycle.
Carbon is stored in the ocean as calcium carbonate shells of marine organisms, like coral, oysters, and clams.
This is the longest time storage form of carbon in the ocean.
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Explain how prokaryotes (note that this is for prokaryotes and NOT eukaryotes) control gene expression.
Answer:
By Controlling transcription
Explanation:
Prokaryotic cells regulate their gene expression by controlling the amount of transcription. This is the only way of regulating the gene expression.
Unlike the prokaryotic cell, in eukaryotic cell, different compartments were formed for carrying out different cellular processes. Later on, transcription and translation were physically separated and were carried out in two different cellular compartments
What is the function of the digestive system?
A. Removal of liquid waste
B. Maintain body temperature and hormone levels
C. Delivers food to your brain
D. Changes food into minerals and nutrients that are absorbed into
bloodstream
A chemist weighed out 101. g of beryllium. Calculate the number of moles of beryllium she weighed out.
Answer:
The correct answer is - 11.209 moles.
Explanation:
According to the definition of moles,
moles = weight/molecular weight
given:
weight of beryllium = 101 g
the molecular weight of beryllium = 9.01
∵ 9.01 g weight of beryllium = 1 mole
∴ 1 g weight of beryllium = 1/9.01 moles
∴ 101 g of beryllium =101/9.01 moles
The = 11.209 moles.
.
If a diploid eukaryotic cell contains 14 pairs of chromosomes for a total of 2n=28, how many chromosomes will be in the resulting products of cellular division if the cell undergoes:
Mitosis?
Meiosis?
Answer:
Mitosis = 28 chromosomes
Meiosis = 14 chromosomes
Explanation:
- Mitosis is the type of cell division in which the daughter cells are genetically identical to the parent cell and possess the same number of chromosome as the parent cells. For example, a diploid parent will produce a diploid daughter cell after mitosis.
- Meiosis, on the contrary, is the cell division that produces daughter cells that are genetically different from the parent cell. Each daughter cell have a reduced number of chromosomes (by half).
According to this question, a diploid eukaryotic cell contains 14 pairs of chromosomes i.e. 2n=28. After mitosis, each daughter cell will have same 28 chromosomes as the parent cell. Meiosis on the other hand, will produce daughter cells that possess 14 chromosomes each.
Select the correct answer.
How much does the diameter of the disk of the Milky Way measure?
A.
10,000 light years
B.
1,000 parsecs
C. 100,000 light years
OD.
100 parsecs
plssssss Help No Links
Answer:
Up
Explanation:
The force is the biggest (8N) so that's why it will move up
Lakesha was culturing bacteria. She used aseptic technique to make sure there was no contamination. When she was finished, she used water to clean the surface of her table. She then put the sample in the incubator, removed her gloves, and washed her hands with soap and water.
Answer:
d. She should be using a disinfectant on her table, not just water.
Explanation:
When Lakesha finished culturing the bacteria, she should not have used water alone to clean the table because water can't kill bacteria. She has to use a disinfectant in order to remove bacteria from the table. This disinfectant has the ability to kill all the bacteria that is present at the table and there is no chance of infection from these bacteria. So we can say that she made a mistake to clean the table with just water and not using the disinfectant over it.
What is the second step of protein synthesis called?
mutation
translation
transcription
division
Answer:
translation
Explanation:
Translation takes place at a ribosome in the cytoplasm. During translation, the genetic code in mRNA is read to make a protein.
Technology affects the environment in many ways. Which negative impact is NOT due to advances in technology?
A) toxic waste
B) global warming
C) habitat destruction
D) increase in natural disasters
Answer:
d
Explanation:
Im pretty sure that the answer is d because how could technology cause more NATURAL disasters and also i took the USATestprep
5. A pride of lions hunting a dazzle of zebras.
Answer:
lions hunting zebras is a part of nature
Explanation:
Who will be hit the hardest by climate change? A the poorest nations B very wealthy nations C Everyone will be affected the same amount D No one will be affected BY TODAY I MARK BRAINLIEST
Answer:
A..The poorest nations
Explanation:
The rishest of the rich are polluting the world and driving climate change, while the poorest of the poor suffer the greatest consequences, according to a new record published Monday by Oxfam international.
Are Parakeets good starter pets? why or why not
Answer:
NO! They require a ton of attention, a large cage, and experience with birds. Parakeets are often marked as starter pets, but no, they are not.
First, they need a 3 feet long cage with 5+ toys that need to be changed each month. And they need natural perches, not the cheap wooden dowels, they will get feet problems. Most people don't do this, having a bored pet.
Second, parakeets will chew anything given/available to them, and a lot of things can be toxic to them, which can lead to the death of your pet.
Third, parakeets are messy and noisy. They poop a LOT and love to toss seeds around their cage. They also need millet and a calcium chew, which are also messy.
They also will want a friend, they are flock animals in the wild so 3-4 birds is a good number, but getting more birds means getting a large cage. The pet store will tell you it's fine, but it is not. ALWAYS SEEK HELP FROM A BIRD BREEDER.
Lastly, they need a bird proofed room to fly around in. No matter how large your cage is, they still need some out-of cage time.
Try a dove or pigeon instead, they are listen the #1 easiest and cheapest to care for pet bird.
The _____________ receives blood from the atrium and pumps it out of the heart.
Ventricles receive blood from the atrium and pump it out of the heart. The left ventricle pumps oxygenated blood to different parts of the body.
How does the heart pump blood?The heart has four chambers, such as the upper two atriums and the lower two ventricles. The right side of the heart holds the deoxygenated blood, and the left side holds the oxygenated blood.
The deoxygenated blood from different parts of the body is poured into the right atrium through the superior vena cava, inferior vena cava, and coronary sinus. Then, from the atrium, blood moves to the ventricle through the atrioventricular opening.
From the right ventricle, blood moves to the lungs for oxygenation through the pulmonary artery. In the lungs, the oxygenation of blood takes place, and the oxygenated blood comes to the left atrium. From the left atrium, the oxygenated blood comes to the left ventricle. From the left ventricle, blood goes to different body parts through systemic arteries.
Hence, the ventricles receive blood from the atrium and pump it out of the heart.
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Mendel was a careful researcher who studied the inheritance of certain traits in garden peas. What are some of the research practices Mendel used? Choose all that apply.
A. He crossed true-breeding pea plants.
B. He allowed eggs to be fertilized only by self-pollination.
C. He analyzed his data mathematically.
D. He controlled variables by studying one or two traits at a time.
protest bushes,palm trees and maize plants are all flowering plants ?
Answer:
The great centres of palm distribution are in America and in Asia from India to Japan and south to Australia and the islands of the Pacific and Indian oceans, with Africa and Madagascar as a third but much less important palm region.
Biotic factors are the _____things in an environment? Multicellular, Eukaryotic, living or used to be living, Non living
Answer:
living
Explanation:
Biotic factors are the living parts of an ecosystem. Because of the way ecosystems work – as complex systems of competition and cooperation, where the action of every life form can effect all the others – any living thing within an ecosystem can be considered a biotic factor. Biotic factors such as soil bacteria, plant life, top predators, and polluters can all profoundly shape which organisms can live in an ecosystems and what survival strategies they use. Eukaryotic unicellular living beings Living beings that are made up of one single eukaryotic
a college student regularly stays up late and tends to eat snacks high in fat and sugar
Answer:
true
Explanation:
college students have stress they need comfort foods
Which of the following statements is NOT true about DNA? *
1 point
There are about 20,000- 25,000 genes in DNA.
Genes are made up of smaller segments of DNA.
Genetic material is passed on from parent to offspring by DNA.
DNA is a set of instructions which determines the traits of an organism.
Answer:
DNA is a set of instructions which determines the traits of an organism
Explanation:
Solve: Suppose an mRNA strand in the cytoplasm has 15
nucleotides. How many amino acids would be in the resulting
protein chain? Explain how you got this number. NO LINKS NO LINKS !!!
Answer:
(Sorry messed up the first time and didnt put an explanation) Four
Explanation:
It is four because there are three nucleotides in a set to make an amino acid. This would make 15 divided by 3, which is 5, but the last one is the code for stop (that is, to tell when a new chain for protiens should start), and that doesn't count as an amino acid.
None of the above
5) Which of the following statements is true?
a. An ecosystem is an area where abiotic components (from organic or living source) and
biotic components (from inorganic or non-living source) interact between interdependent
subsystems within a spatially regulated organisation using energy from the sun and a
b. An ecosystem is an area where biotic components (from inorganic or living source) and
abiotic components (from organic or non-living source) interact between dependent
subsystems within a spatially regulated organisation using energy from the sun and a
variety of raw materials.
variety of raw materials.
C. An ecosystem is an area where biotic components (from organic or non-living source)
and abiotic components (from inorganic or living source) interact between interdependent
subsystems within a spatially regulated organisation using energy from the sun and a
variety of raw materials.
d. An ecosystem is an area where biotic components (from organic or living source) and
abiotic components (from inorganic or non-living source) interact between interdependent
subsystems within a spatially regulated organisation using energy from the sun and a
variety of raw materials.
e. An ecosystem is an area where biotic components (from organic or living source) and
abiotic components (from organic or living source) interact between interested dependent
subsystems within a spatially regulated organisation using energy from the sun and a
variety of raw materials.
Answer:
E
Explanation:
A research essay should always include a(n) ____ to protect the writer from accusations of ____
A. date; lateness
B. works-cited list; faulty reasoning
C. introduction; having constructed a poor argument
D. works-cited list; plagiarism
Why should everyone be encouraged to take an HIV blood test?
to slow down and prevent it's spread
Explanation:
testing is the only way to know for sure if you have HIV. Knowing your status means you keep yourself and your sexual partners healthy.
how do the ocean zones compare with one another
8. Which of the following correctly shows one path that energy would
flow through this ecosystem?
Grasses -- Termite -- Monkey -- Eagle
Hyena -- Mongoose - Mouse - Grasses
Grasses - Termite - Grasshopper -- Monkey
Acadia trees - Giraffe
-- Lion -- Vulture
grassses -- Termite -- Monkey -- Eagle