Answer:
varyatio of somthing and multiple varitons of it
Explanation:
The two ways that variation can be described are meiosis and evolution, because in the meiosis process, sexual reproduction occurs, and in the evolution process, changes in animals are seen and variation is observed.
What is variation?When sexual reproduction occurs, there is variation seen because in meiosis genes cross over and recombinate, resulting in variation in offspring from their parents, but it is absent in asexual reproduction that is caused by mitosis or binary fission because here there is no variation in the offspring and the parents. The process of evolution introduces variation because, along with environmental factors, the animal genes are influenced too.
Hence, the two ways that variation can be described are meiosis and evolution, because in the meiosis process, sexual reproduction occurs, and in the evolution process, changes in animals are seen and variation is observed.
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Which cell structures are seen in all cell types? Check all that apply.
Organisms that contain only one cell and do not contain a nucleus or membrane-bound organelles are known as
.
Answer:
unicelluar
Explanation:
I just reasearched
Carbon atoms have four electrons in their outer shell. This means that a single carbon atom can form up to _______ bonds with other atoms.
Answer:
four
Explanation:
Carbon atoms have four electrons in their outer shell. So, it exhibits tetravalency & thus, a single carbon atom can form a maximum of four (4) bonds with other atoms
If something irritates the nerves going to your diaphragm, it will spasm
and you will ______.
Answer:
guess
Explanation:
what is the tool to meausre wind direction?
Answer:
the answer is anemometers hope this helped!
summarize the importance of stem cells
Answer:
Stem cells can become almost any cell in the human body.
Explanation:
This is important because in embryonic development, the body uses stem cells to form each individual part. For example, a single stem cell could become a heart cell, or brain cell, or a blood cell, or more. This is also important for possible treatments. In order to heal damaged or diseased bone tissue, blood stem cells can be taken out of the same person and used to fix the tissue. This allows for a lower rejection rate sense the cells used to fix the tissue were already part of the person's body.
Proteins...
A) provide support, structure and storage
B) help organisms maintain homeostasis
C) help carry important molecules around the body
D) all the above
Answer:
D all of above
Explanation:
Need Help Earth Science: Due in 3 minutes
Which of the following is not an example of a fossil:
Question 1 options:
A) petrified wood
B) coprolite
C) amber
D) mud
Answer:
Answer is Mud,
A classmate suggests a new hypothesis for researchers to test: Taller salt marsh grasses are
prettier than shorter marsh grasses. Explain why this hypothesis is not scientific.
Answer:
Because it's an opinion and cannot be tested.
Explanation:
(gene) a segment of DNA that ______ for a trait and is transferred from parent to offspring.
can anyone give me these two answers please i’ll give u 15 points
Answer:25%
Explanation:
A change in the characteristics of
populations of living things over
time is called evolution.
Agree or disagree
Answer:
Agree
Explanation:
Answer:
Yes, it is true
Explanation:
Evolution is the processes in which organisms change or evolve, either anatomically or physiologically.
Through which conversion is energy released?
Answer:
ATP to ADP
Explanation:
bc yah
In what ways are the ingredients in a cake like the gases in Earth’s atmosphere?
Answer:
because there are different types of gases and layers of the atmosphere on earth.
Explanation:
please help me fill out this concept map!! it’s about Cultural Eutrophication
Okay where is the map
2. Examine the arm bones of the two skeletons. Was Grandmother right- or left-handed? How
about Grandfather?
Answer:
He looks ambidextrous but he may also be right handed due to the slight more bone on his right arm.
Explanation:
Its a little hard to tell, my guess is that he was ambidextrous, but his right arm does look slightly more dominant so really it may be his right arm.
two or more functions that must occur
inside of our body so that we stay alive.
Answer:
hope this helps u
Explanation:
These many functions can be summarized in terms of a few that we might consider definitive of human life: organization, metabolism, responsiveness, movement, development, and reproduction.
what is the function of the enzyme-substrate complex
How does double circulation prevent the mixing of oxygenated and deoxygenated blood
Answer:
By the process of double circulation the oxygenated blood go through its own path and deoxygenated blood go through its own path
the dispersal of ink in a beaker of water is an example of
a. endocytosis
b. diffusion
c. active transport
d. osmosis
Answer:
A
Explanation:
Diffusion is the answer:)))
plz help meeee!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
i think it is the middle one
B
Identify the plant tissues in the three images.
A
B.
C
I originally asked for the images but I will give it my best shot at answering your question without them! :D
There are only three types of plant tissues:
1. Dermal
2. Ground
3. Vascular
The dermal tissue is the outside of the plant's root, stem, or leaf, A.K.A the the skin. If you're looking at a circular image, what ever is pointing to the outside ring of the stem is the dermal tissue.
The ground tissue is the flesh of the plant that is inside the dermal tissue. It surrounds the vascular tissue in the middle of the stem. Whatever letter is pointing to the wide, fleshy ring, that is touching the dermal tissue is the ground tissue. It is the largest part of a plants stem, roots, or leaves.
Lastly, the very inner ring or rings of the plant is the vascular tissue. It's made up of xylem and phloem. This can be found in many different places depending on the part of the plant, but what you're looking for is tiny circles within the ground tissue. If you're looking at the roots, you will see one circle in the very center of the plant, surrounded by ground tissue. If you're looking at the leaves, you will see one circle as well, and additionally other tiny circles throughout the ground tissue in each wing. Lastly, if you're looking at the stem, you'll see a circle of tiny circles within the ground tissue. These small circles are all vascular tissue.
Image 1:
A. Dermal tissueB. Vascular tissueC. Ground tissueImage 2:
A. Epidermal tissueB. Vascular tissueC. Ground tissueImage 3:
A. XylemB. PhloemC. Ground tissueImage 1:
The dermal tissue is the outermost layer of cells that covers the plant. It is responsible for protecting the plant from the environment. The vascular tissue is a system of tubes that transports water and nutrients throughout the plant. The ground tissue is the tissue that makes up the bulk of the plant. It is responsible for photosynthesis, storage, and support.
In the image, the dermal tissue is the thin layer of cells that covers the surface of the leaf. The vascular tissue is the network of tubes that runs through the leaf. The ground tissue is the bulk of the leaf, and it is made up of cells that contain chloroplasts.
Image 2:
The epidermal tissue is the outermost layer of cells that covers the plant. It is responsible for protecting the plant from the environment. The vascular tissue is a system of tubes that transports water and nutrients throughout the plant. The ground tissue is the tissue that makes up the bulk of the plant. It is responsible for photosynthesis, storage, and support.
In the image, the epidermal tissue is the thin layer of cells that covers the surface of the stem. The vascular tissue is the network of tubes that runs through the stem. The ground tissue is the bulk of the stem, and it is made up of cells that contain chloroplasts.
Image 3:
The xylem is a type of vascular tissue that transports water and nutrients from the roots to the rest of the plant. The phloem is another type of vascular tissue that transports sugars from the leaves to the rest of the plant. The ground tissue is the tissue that makes up the bulk of the plant. It is responsible for photosynthesis, storage, and support.
In the image, the xylem is the dark brown tissue that runs through the center of the stem. The phloem is the lighter colored tissue that surrounds the xylem. The ground tissue is the bulk of the stem, and it is made up of cells that contain chloroplasts.
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The complete question is:
Identify the plant tissues in the three images.
A. Is Dermal
B. Is Vascular
C. Is Ground
Describe the similarities between enzymes and receptors.
Answer:
Receptors and enzymes are both located in the cell membrane. Receptors and enzymes are both proteins that can cause a reaction or response. Receptors and enzymes both speed up chemical reactions. Receptors and enzymes do not have any similarities.
Explanation:
Enzymes are known as biological catalysts. They speed up a chemical reaction taking place inside the body. Receptors can be defined as the chemical structures that transduce and receive signals.
The similarities between enzymes and receptors are as follows:
Both are composed of proteins.Both contain specified sites for their substrates.Receptor causes a response and enzymes facilitates a reaction.Both are proteins and both are crucial for the completion of different functions in the body.
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Choose all the answers that apply.
Muscles in the small intestine are _____.
smooth
striated
involuntary
voluntary
cardiac
Answer:
involutary
Explanation:
we don't have to will it to work
2Mg + O2 ----> 2MgO
in the equation above , how many atoms are in the oxygen molecule
A.2
B.0
C.1
D.3
Answer:
2
Explanation:
Polypeptides are chains of amino acids. They can coil/fold into different shapes. Some 'R'-groups are either hydrophobic, hydrophilic, or neutral in their charge. Suppose you have a very long polypeptide, where a part of the chain is hydrophobic and another part is hydrophilic. I go ahead and drop this long polypeptide in water and it coils up. How do you think it would coil? Why? What can you infer about the proteins in our bodies regarding this situation
Answer:
The hydrophilic part of the polypeptide chain would be oriented towards the surrounding water while the hydrophobic portion would be arranged away from the water and would make the hydrophobic interior resulting in coiling of the polypeptide chain. The body proteins assume the shapes to organize their hydrophobic parts away from the watery fluid.
Explanation:
Amino acids are the monomers of proteins. Each amino acid, present in proteins, has a central carbon atom. Four functional groups are attached to the central carbon atom of amino acid. These are the carboxyl group (COOH), amino group, a hydrogen atom (H) and a side chain (called R group). Amino acids differ from each other for the side chain present in them. Based on the nature of the side chain, amino acids are hydrophobic or hydrophilic or neutral. Sidechains of some amino acids are charged and have positive or negative charges on them.
The extracellular fluid of the body is a watery medium. Blood also has liquid plasma that is 99% water. The intracellular fluid, called cytosol, is also a water-based liquid.
The hydrophilic side chains of the amino acids interact with the watery surroundings. They can make hydrogen bonds with the water. The charged hydrophilic R groups make electrostatic interactions with the surrounding medium. The hydrophobic R groups of the amino acids tend to arrange themselves away from the watery medium. This makes the part of the polypeptide chains with hydrophobic amino acids to fold so that these R groups are oriented away from the water.
Similarly, when a long polypeptide chain is dropped in the water, the hydrophobic R groups are arranged away from the water while the hydrophilic ones are arranged towards the surface of the chain facing the water. It is done to adopt a stable shape where maximum attraction forces are established.
Which organisms undergo Carnegie stages?
Answer:
B: Sheep
Explanation:
only mammals undergo Carneige Stages
Answer:
Salamander and Sheep!
Explanation:
List two factors that may cause cancer, and explain those factors as to how they affect cancer.
Answer:
Biological or internal factors such as age,gender, inherited genetic defects,skin types,etc
environmental exposure eg exposure to Radon and UV radiation and fine particulate matter
what is the definition of rough ER
Answer:
Edoplasmic reticulum
Explanation:
it's a network of membranes that folds, modifies, and transports proteins throughout the cell.
Why is the nutrient cycle important?
a) both answers
b) neither answers
c) it limits the accumulation of elements which may have become toxic
d) it guarantees ecosystems don’t run out of nutrients
I beleive the answer is D, it is called the Nutrients cycle.
Normal homeostatic conditions require potassium concentrations to be about 1000 times higher inside the cell than in the blood.
What mechanism does a cell use to move these small potassium molecules into the cell against the concentration gradient?
A.
active transport by proteins
B.
active transport by endocytosis
C.
passive transport by osmosis
D.
passive transport by diffusion