Answer:
scientists can also analyze DNA to discover how closely organisms are related. Every living creature has DNA, which has a lot of inherited information about how the body builds itself. Scientists can compare the DNA of two organisms; the more similar the DNA, the more closely related the organisms.
please help me
Which statement best describes the role of lichens in ecological succession?
A. They replace smaller trees and shrubs that need less sunlight.
B. They add nutrients to the soil and hold the soil together with roots.
C. They release acids that help break down bare rock to form soil.
D. They use nitrogen from the air to make nutrients that plants can use.
Answer:
C. They release acids that help break down bare rock to form soil.
Explanation:
Quiz Verified
plz help. what makes the theory of evolution different from a creation myth?
Answer:
it states that we we...evolved from smaller organisms as apposed to being created from a higher being
Explanation:
can't you believe in both tho?
Mesomorphs have which of the following body types?
O Muscular and athletic
O Thin and frail
O Large and soft
O Average
Answer:
A. Muscular and athletic
Explanation:
Explain how diffusion is used to support the life processes of animals.
Answer:Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow.
Explanation:Diffusion is important to cells because it allows them to gain the useful substances they require to obtain energy and grow, and lets them get rid of waste products. This table shows examples of substances required by cell and associated waste products.
define biomass plzzzzzzzzzz
Answer:
the total mass of organisms in a specific area or volume
Explanation:
hope this helps!!
A change in an organisms that increases fitness
What is it called?
Answer:
is the evolution of mean fitness an answer
Explanation:
Part D
Choose one of there hypotheses to make a prediction
Answer: The tomato plants will grow faster and taller in soil with compost over a 30-day period.
Many freshwater plants have adapted to low carbon and light levels by adapting what feature?
Group of answer choices
Carnivorous plants
No need for carbon dioxide
Camouflage
Floating leaves
Answer:
The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common. Aquatic plants can only grow in water or in soil that is frequently saturated with water. They are therefore a common component of wetlands.
After a long soccer practice, Jack felt his pulse increase. As he cooled down, his pulse began to slow. Since he’d been studying the circulatory system in science class, he knew why his pulse slowed. Which statement best describes what’s happening in Jack’s body right after soccer practice?
Answer:
heart
Explanation:
His heart rate is increasing while he runs
Read the following passage on Hox genes. Using the information presented, write a short passage to support the claim that many Hox genes are regulatory genes.
The genome of an organism can be many millions of base pairs long. Genes are regions of the chromosome that code for protein products. They are scattered throughout the chromosome with little logical reason for their placement. There is an exception to this disorder—Hox genes, which are a family of genes that produce transcription factors. Hox genes are found in most eukaryotes. They are clustered together in the genome and always found in a particular order. The genes are in the same order as the characteristics are found along the body axis in the organism itself. These genes specify segment placement, such as whether a segment will form part of the head, thorax, or abdomen. For example, Hox genes related to structures in the head of an organism are found first in the Hox cluster.
Hox genes have been studied in fruit flies. A cluster of 8 Hox genes are activated very early in development, laying out the segmented body plan of the head, thorax, and abdomen. There are very clear boundary lines of expression for each Hox gene. In fact, forcing embryonic Hox gene expression in a wrong part of the body can cause another region’s body parts to develop. Scientists created a fly that had legs where its antennae should be through induced Hox expression!
Answer:
hox genes are a subset of regulatory genes that encode transcription factors and they are important for embryonic development. they are activated by a cascade of regulatory genes and the proteins encoded by the early genes regulate expressions of later genes
Explanation:
The orderly arrangement and clear boundary lines of expression for each Hox gene suggest that many Hox genes are regulatory genes. Hox genes produce transcription factors that control the expression of other genes, regulating the developmental processes that determine segment placement and body plan.
Describe more about Hox genes ?The placement of Hox genes in a particular order along the chromosome is also indicative of their regulatory function. Hox genes are clustered together and in the same order as the body axis of the organism, suggesting that their arrangement is not random but rather a functional design.
Additionally, the ability to induce Hox gene expression in the wrong part of the body and cause the development of body parts from a different region of the organism further supports the regulatory role of Hox genes.
This shows that Hox genes have the ability to control the fate of cells and determine the formation of body structures. Therefore, it is clear that many Hox genes are regulatory genes that play a critical role in controlling the complex developmental processes of organisms.
Hox genes are also known for their role in evolutionary biology. Changes in the expression pattern or function of Hox genes can result in significant changes in body plan and morphology, leading to the development of new structures and functions.
For example, it is believed that the evolution of the arthropod body plan and the development of the jointed appendages in insects was due to changes in the expression of Hox genes. Similarly, changes in the Hox gene expression pattern have also been linked to the evolution of the vertebrate body plan and the development of the vertebrate limb.
Moreover, Hox genes have been linked to several human genetic disorders. Mutations in Hox genes can cause developmental abnormalities such as synpolydactyly, a condition where fingers and toes are fused together, or polydactyly, where there are extra fingers or toes. Mutations in Hox genes have also been associated with some forms of cancer, such as leukemia.
In summary, Hox genes are a family of regulatory genes that play a critical role in controlling the complex developmental processes of organisms. They are known for their role in determining segment placement and body plan and have been linked to evolutionary changes, developmental abnormalities, and some forms of cancer.
Learn more about Hox genes at :
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You put a marshmellow on a metal coat hanger and roast the marshmellow over an open fire. The marshmellow catches on fire. You quickly blow it
out. Before you get a chance to eat it, your hand gets really hot where you are holding the metal hanger. What type of energy transfer can explain
this situation?
Answer: Conduction
Explanation: As the fire starts to heat up the metal hanger it transfers the heat onto your hand.
Conduction Def: The process by which heat or electricity is directly transmitted through a substance
What effect do ocean currents have on California’s climate?
Answer:
These currents, along with other climatic conditions, influence water temperatures along the coast, with Northern and Central California generally having cooler water than Southern California.
Which of these surfaces would have the least amount of friction?
grass
sand paper
concrete
satin cloths
Answer:
the.satin cloths woul have the least
Answer:
satin cloths because its smooth which cause less friction
BIOLOGY STUDENTS, I NEED UR HELP.. Substances transported in the phloem are carried upwards in the stem at some time of the year and downwards at other times. Explain why substances are transported in the phloem upwards at one time of the year and downwards at another. *
How is water formed during the electron transport chain
Answer:
The electron transport chain is the third and final step of cellular respiration. At the end of the electron transport chain, the hydrogen from the coenzymes meets the oxygen which the cell has consumed and reacts with it to form water. Therefore, water is created as a byproduct of the metabolism reaction.
In an animal species, black (B) fur is dominant over brown (b) fur. Which statement describes the phenotypes of the offspring from a cross between two homo...zygous black-furred animals?
Group of answer choices:
A. All of the offspring will have brown fur.
B. Three-fourths of the offspring will have black fur, and one-fourth of the offspring will have brown fur.
C. All of the offspring will have black fur.
D. One-half of the offspring will have black fur, and one-half of the offspring will have brown fur.
Explanation:
C All the offspring will have black fur
Students use a microscope to look for structures present in four different cells. The students placed an X for each structure that was viewed for each cell on the table shown.
Which cell that was viewed is most likely a prokaryote?
Cell W
Cell X
Cell Y
Cell z
Answer:
cell x
Explanation:
This is because prokaryotes have no nucleus: their DNA is a single molecules free in the the cytoplasm. Prokaryotes have a cell wall and membrane
how does a virus keep the body from creating antibodies?
Answer:
it adapts , it starts to create an imunity against anitbodies
(I'm not sure if i am right )
6: Salt is an ionic compound- what happens to the salt when it is dissolved in
water?
When organisms grow, what happens to their cells?
A- the cells continue to get larger
B- they increase in number
C- both a and b
D- neither a nor b
Answer:
B.
Explanation:
whenever a organism grows the cells seperate to make up more room for the organism to keep growing until adulthood to elderly-hood
A physical property is a characteristic of matter that can be _________ or ________ without changing the chemical composition.
How are the Oxitec mosquitoes different from the mosquitoes that Anthony James engineered?
Answer:
The Oxitec mosquitoes are engineered in a slightly different way from those James designed. The males are unable to produce healthy offspring. ... Wild females mated with the engineered males, and their offspring died before they reached adulthood.
Which is an example of a natural disaster that would threaten the survival of
plants and animals in Virginia?
A. snow in February
B. hot temperatures in July
C. hurricane in August
D. rain in April
( there are multiple answers i think)
In a mouse population, some mice have thicker fur than others, but there are more mice with thinner fur. The climate in which these mice live has slowly gotten colder.
Answer:
What is the question?
Explanation:
Pls help meee I will mark ❤️❤️❤️❤️
Answer: 1. Oxygen is used by cells to make energy.
2. Lungs, pharynx, larynx, trachea, bronchi, and diaphragm.
3. Blood carries oxygenated blood to the body and deoxygenated blood back to the lungs.
4. Increased amount of carbon dioxide lowers the pH of blood. Brain sends signal to the diaphragm to increase activity to get rid of carbon dioxide.
5. In the alveoli, oxygen and carbon dioxide move from high concentration to low concentration (this is also known as diffusion)
Explanation: Good luck! :D
Why would Oceanic Crust be thinner and more dense than Continental Crust? Explain.I WILL MARK YOU BRAINELEST.
pls help me I need a answer asap
Answer:
The correct order is -
a. 5 > 3 > 4 > 1 > 2 .
Explanation:
In sedimentary rocks, the bottom layer of the rock form initial and the fossils found in them would be older and the layer on top deposited the latest so the fossils found in the top layer would be the youngest.
Newer layers form or deposited on the layers of the oldest or bottom layer of the sedimentary rocks. Hence, the fossils present in the bottom layer would be the oldest fossil and newer fossils will be above them and the youngest would be top.
Thus, the correct answer is - a. 5 > 3 > 4 > 1 > 2 .
What is a karyotype and how do they help scientists
Answer:Karyotyping is a laboratory procedure that allows your doctor to examine your set of chromosomes. “Karyotype” also refers to the actual collection of chromosomes being examined. Examining chromosomes through karyotyping allows your doctor to determine whether there are any abnormalities or structural problems within the chromosomes.
Explanation:
How does nondisjunction affect the production of gametes?
What directions do the plates move relative to one another in a divergent plate boundary?