Answer:
Meiosis is a process in which sex cells, also known as gametes are made. Meiosis is different from mitosis in a lot of ways, one being that mitosis creates identical daughter cells and meiosis creates unique daughter cells. Meiosis is important because it allow for the creation of a meiosis nucleus. Cells produced by meiosis will be used in haploid, where each member of the next generation is genetically unique.
Cells produced in sexual reproduction will have half of the genetic information of body cells and will be genetically unique. This is necessary because when a sperm and an egg fuse together in sexual reproduction. They form a zygote: the first body of a new individual.
The new individual will now have cells that are diploid, meaning they have two sets of chromosomes. They zygote will have to do a lot of mitosis allowing it to grow quickly and ensure that all of its cells are genetically unique.
Mitochondria are cell structures that contain a small quantity of DNA.
Scientists are sequencing the DNA of one particular gene in mitochondria to
help identify different species of many animals including myriapods. The
sequences that they find are called ‘barcodes’.
(i) State the part of the cell that contains most of the DNA.
[1]
(ii) Suggest how DNA barcoding might be useful in the classification of animals,
such as myriapods.
PLEASE HELP I FELL ASLEEP IN BIOLOGY CLASS!!?
Answer: Cell wall
Explanation:
Is this correct guys?
Answer:
Yes its correct.
:)))))
Which of the following statements about Newton's second law is false?
A. The acceleration of an object is directly proportional to the net force applied on the object.
B. The acceleration of an object experiencing a constant net force is inversely proportional to its mass.
C. Objects with a small inertia are harder to accelerate than objects with a large inertia.
D. Increasing the net force applied to an object increases the acceleration of the object.
Answer:
C. Objects with a small inertia are harder to accelerate than objects with a large inertia.
need help with this getting confused
9 Luis wants to interview someone who has a career in biotechnology. Which of
the following best describes a career in biotechnology?
F Athena uses a sophisticated telescope to observe stars.
G Zach tracks the number of fish that inhabit a certain coastal area.
H Vincent modifies the DNA of bacteria to study the function of their genes.
I Lindsey writes computer programs that model the three-dimensional
structure of chemical compounds.
Which statement about the structure of DNA is NOT true?
Long strands of DNA are twisted in the form of a double helix.
Long strands of DNA are twisted in the form of a double helix.
DNA contains four different nitrogen bases including adenine, guanine, cytosine, and uracil.
DNA contains four different nitrogen bases including adenine, guanine, cytosine, and uracil.
DNA is made of linked nucleotides which are each made of a sugar, a phosphate and a nitrogen base.
DNA is made of linked nucleotides which are each made of a sugar, a phosphate and a nitrogen base.
DNA consists of two strands joined together by complementary base pairing.
Answer:
DNA contains four different nitrogen bases including adenine, guanine, cytosine, and uracil.
Uracil is in RNA not DNA
Answer:
DNA consists of two strands joined together by complementary base pairing.
What is the reactant in the
following chemical reaction?
Which of the following does not act as an agent for transporting sediment? O A. Strata B. A light breeze C. Stream water D. A glacier
Answer:
A.Strata
Explanation:
A strata is covering or layers
Answer:
strata
Explanation:
a p e x
This picture shows examples of a cross section of human skin.
The integumentary system could best be compared to-
Answer:
i don"t know sorry
Explanation:
ask some one
What common breeds get affected by gastrotomy?
Answer:
Great Danes, greyhounds and german Shepherds
Explanation:
GDV tends to effect deep chested dog breeds
what is the definition of natrual asexul reprduction?
Answer:
In natural asexual reproduction, roots can give rise to new plants, or plants can propagate using budding or cutting. In grafting, part of a plant is attached to the root system of another plant; the two unite to form a new plant containing the roots of one and the stem and leaf structure of the other.
Explanation:
In horses, black coat color is influenced by the dominant allele (B) and chestnut coat color by the recessive allele (b). Trotting gait is due to a dominant gene (T), pacing gait to the recessive allele (t). What color horse would you use to find out the exact genotype of a black trotter? Explain.
Answer:
Bb or BB and Tt or TT
Explanation:
Black coat could be BB or Bb because it only needs one dominant allele for the trait to show up and the same goes for Tt and TT.
guys help with this plzz
brainlest even if u try ur best :
Vasoconstriction and Vasodilation
__________ carries heat from the core around the body.
As blood flows through the ______________ close to the surface of the ______, heat is lost to the body’s surroundings.
The __________________ which supply the capillaries in the skin have smooth _________ in their walls. This means that the arterioles can dilate or constrict to ____________ the flow of blood into the capillaries.
Explanation:
is it only vasoconstriction and vasodilation as the answers or are there more?
When the environment acts for or against one extreme characteristic, this is an
example of which category of natural selection?
Answer:
Directional selection
Explanation:
occurs when natural selection favors one extreme of continuous variation. Over time, the favored extreme will become more common and the other extreme will be less common or lost.
Algae produce food by the process of....?
Answer:
Photosynthesis
Explanation:
What is an example of a mutation that is beneficial? *
A. A mutation that deletes part of the DNA, causing an organism to lose its arm.
B. A mutation that allows humans to digest milk and the nutrients in the milk
C. A mutation that ends up doing nothing to the organism
which one ^
Answer:c
Explanation:
B.
A mutation causing an organism to lose its arm would be harmful and a mutation which does nothing is neither harmful nor beneficial.
The answer is B.
Which statement best explains how a light wave behaves when moving from air to water?A:it speeds up and bands B:it slows down and bands C:it speeds up and continues straight D:it slows down and continues straight.
Answer:
it speeds up and bends
Explanation:
common sense lol
The statement that best explains how a light wave behaves when moving from air to water is "it slows down and continues straight." That is the last option, i.e., option D, as light travels more slowly in water.
What is the significance of the waves at different mediums?Waves react differently in different mediums, such as when the phenomenon of refraction is used in many optical devices such as lenses, prisms, and mirrors, and these devices change the property of light to slow down and bend when moving from one medium to another. In microscopes and telescopes, the study of light refraction has provided important insights.
Hence, the statement that best explains how a light wave behaves when moving from air to water is "it slows down and continues straight." That is the last option, i.e., option D, as light travels more slowly in water.
Learn more about waves in various mediums here.
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DOES ANYONE KNOW 10?
Answer:
Disjunction
Explanation:
How did the concept of biodiversity originally become more excepted in the scientific community?
Answer:
The Importance of Biodiversity
Increase ecosystem productivity; each species in an ecosystem has a specific niche—a role to play.
Support a larger number of plant species and, therefore, a greater variety of crops.
Protect freshwater resources.
Promote soils formation and protection.
Provide for nutrient storage and recycling.
Explanation:
how to do this question plz
Answer:
We are only given one leaf, but the leaves in layer D of the same species would not be identical. Some of them could have deeper indentations or fewer indentations. A wider leaf surface area lets a plant absorb more sunlight, so it would be an advantage if leaves have fewer indentations.
The plants with fewer indentations will reproduce more, passing on their genes for fewer indentations. This repeats for a long time, then plant leaves overall would only have very small indentations (like the leaf for layer B).
Explanation:
There are mutations and variations that make one organism different from another organism, even if they're the same species.
Natural selection is when the environment "chooses" the organisms that have an advantage in the environment to reproduce. Organisms that are selected to reproduce can pass on their genes to future generations.
The deep indentation leaves from layer D were basically "phased out".
How does the inheritance of dominant traits differ from the inheritance of recessive traits?
Answer:
Dominant traits are more visible than recessive traits
Help me please :( ,Someone
can I please get help with it
you search it
or ask your parent
Amino acids are monomers of?
Answer:
amino acids are the monomers that make up proteins
Answer:
PROTEINS.
Explanation:
A protein is made up of long chains of amino acids.
A football player kicks a ball 6.5 meters how much time is needed for a ball to travel this distance if it's speed is 22 m/s
Answer:
.3 m/sec
Explanation:
suppose you find a paper clip stuck to a magnet you pull off the paper clip and move it to a short distance away from the magnet what happened to the magnetic Force between the magnet and the paper clip A. it disappears B. it gets stronger C. it gets weaker D.it stays the same
Answer: C
Explanation: it gets weaker because there not as close together
When mammals get an infection, their internal body temperature often rises 2 to 3 degrees Celsius. The body gets the energy it needs to react to an infection by -
Answer:
The correct answer is - increasing the rate of cellular respiration in the mitochondria.
Explanation:
During the infection, the body of mammals increases its temperature to kill the pathogens that normally die at high temperatures. To increase the body temperature our body promotes the rate of cellular respiration in the cells to produce more energy.
Cellular respiration is the process that helps in converting stored energy into a form of useable energy for the cell which is ATP. It takes place in the mitochondria of the cell which is called as the powerhouse of the cell and all the function related to energy or ATP is conducted by here.
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B. Consisting of billions of galaxies
Hope this helps :)
what general type of mutation has the greatest effect on the protein produce
Answer: The most serious of these mutations will be the insertion of 2 bases. Becasue the genetic code is read in triplets, a 2 base insetion will alter the reading frame of the code causing a frameshift mutation meaning every amino acid after the site of the mutation will be incorrect.