Explanation:
Something that is lacking, is a circulatory system. Instead of a typical circulatory system flatworms exchange oxygen with the air outside through diffusion. This is the process by which gases will pass through a membrane from an area of high concentration to an area of low concentration.
Which one 1,2,3,4…………………
Answer:
3
Explanation:
brain
hope this helps!!!
Answer:
3
Explanation:
In order to assign a Richter magnitude to an earthquake event, a scientist would have to measure the _________ waves on a seismogram.
a. secondary
b. surface
c. primary
True or False: There are no shortcuts in
dichotomous keys!
Answer:
True
Explanation:
No need to skip
what does it mean to say that CO2 becomes "fixed" during photosynthesis
Answer:
What does it mean to say that CO2 becomes "fixed" in talking about photosynthesis?
A. CO2 becomes bonded to an organic compound.
Explanation:
What regulates breathing rate and how does the body sense when to breath?
Answer:
Involuntary respiration is controlled by the respiratory centers of the upper brainstem (sometimes termed the lower brain, along with the cerebellum). This region of the brain controls many involuntary and metabolic functions besides the respiratory system, including certain aspects of cardiovascular function and involuntary muscle movements (in the cerebellum).
Explanation:
The respiratory centers contain chemoreceptors that detect pH levels in the blood and send signals to the respiratory centers of the brain to adjust the ventilation rate to change acidity by increasing or decreasing the removal of carbon dioxide (since carbon dioxide is linked to higher levels of hydrogen ions in blood).
Prior to Mendel, scientists thought that an offspring _____.
inherited traits from only one parent
blended the traits of both parents
demonstrated traits randomly
exhibited certain traits from each parent
Answer:
blended the traits of both parents
Explanation:
Why do mutations code proteins?
Answer:
A nonsense mutation is a genetic mutation in a DNA sequence that results in a shorter, unfinished protein product. DNA is a chain of many smaller molecules called nucleotides. During protein formation, DNA (or RNA) nucleotide sequences are read three nucleotides at a time in units called codons, and each codon corresponds to a specific amino acid or stop signal (stop codon).
Explanation:
How do trees help reduce carbon dioxide in the atmosphere?
Explanation:
Trees, like all plants, use the energy of sunlight to take carbon dioxide (CO2) from the air and water from the ground through the mechanism of photosynthesis. They release oxygen into the air during the process of turning it to wood.
and no- this is not copied :)
The kidneys and sweat glands both work to prevent excesses of
a) either uric acid or urine in the body.
b)either water or salt in the body.
c)either carbon dioxide or oxygen in the body.
d) either feces or pH levels in the body.
Answer: The kidneys and sweat glands both work to prevent excesses of either water or salt in the body
Explanation:
The kidneys and sweat glands both work to prevent excesses of either water or salt in the body. Thus, the correct option is B.
What is function of kidney and sweat glands?Both the kidneys and the sweat glands excrete nitrogenous wastes, water and electrolytes. They are also involved in maintaining acid-base balance.
kidney is the organelle present below the abdomen whereas the sweat gland is exocrine glands that release the substances into a duct or opening to the inside or outside of the body.
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why are they called amino acids?
Answer:
You stated why it is called an amino acid, the name comes from the amine (amino) and the carboxylic acid (carboxyl group). Amines are weak bases, so the acid portion of the name must come from the carboxylic acid
Explanation:
hope it will help you
A person with a bacterial infection begins to feel hot and feverish. This response MOST likely helps the body fight infection by —
Answer:
making it hard for bacteria to leave the body
Explanation:
Two ways that hostility can affect the body are through stress on the heart and Select one: a. increased pulmonary function. b. reduced pulmonary function. c. decreased inflammation. d. increased lymphocyte activity.
Answer:
sorry hindi ko po alam nyan pag alam ko sasabihin ko po sa inyo promise po nyan
Sedimentary rocks such as sandstone often contain cracks or ripples. These marks show that a number of sedimentary rocks form
A. In pockets of molten rock.
B. Inside ice in mountain ranges
C. Under sands in the desert
D. At the bottom of bodies of water
Which of the following best represents what is displayed in the image below?
A. The differences between plant structures and the mechanism that produces them
B. The completed plant tissues and the cells that initiate their growth
C. The relationship between different structures in a plant and their functions
D. The types of plant cells and their functions within the plant
The given image shows the relationship between different structures in a plant and their functions.
What are the structures of plants and their functions?
There are various plant parts, each with its unique characteristics and functions to do. Each one of them plays a vital role in maintaining a healthy ecology and environment.
The parts of the plant include
Roots: The most crucial component of a plant is its roots. They are located underground and make up a plant's root system. They are responsible for holding the plant in place with the soil. They serve as an anchor that the plant uses to keep itself steady. By soaking up water, nutrients, and minerals from the soil, they also control the health of the plant. A plant can grow as a result of these. Additionally, they keep food supplies for later use.Stems: It is the second most crucial component. It rises above the ground, starts out green, and eventually turns brown as it gets older. They consist of leaves, fruits, and flowers and sustain the plant's stalk system. They support the framework and structure of the plantLeaves: Chlorophyll, which is responsible for the synthesis of plant food, can be found there. To prepare the food, it makes use of water, carbon dioxide, and sunlight. A leaf is further divided into three main parts: the petiole, leaf base, and lamina.Flowers: There are certain plants that do not have flowers. They have a vibrant, peaceful aesthetic. They are the plant's reproductive system. Petals, sepals, stamens, and pistils are its four main constituent components.Fruits: Fruit production is carried out by flowering plants. After fertilization, the fully developed ovary transforms into a fruit. They develop into a seed first, then a fruit.Learn more about plants here:
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What is one characteristic that a star’s spectrum can reveal?
A.
its direction
B.
its temperature
C.
when it was formed
D.
its constellation
Answer:
B. Temperature
I NEED HELP ASAP PLEASE!!
Answer:
yes you're good. D its the right
Earth’s rotation caused surface currents in the Northern Hemisphere to
A. Curve Clockwise
B. Move in straight lines
C. Curve Counterclockwise
D. Move in diagonal lines
Wrong answers only!! What are 3 sustainable tourism takes into account
Answer:
• robing
• playing h&s
• Hw
Explanation:
How did Burger King get Dairy Queen pregnant?
Answer:
they where like McDonald's they broke the icecream maker
which of the following is an example of the current impact DNA technology has on human health?
Answer:plants grow
Explanation:te she said so
Why don't you have mechanical energy
when
you are
laying on the ground?
Answer:
If an object is lying on the ground, and is nowhere near a "hole" or a cliff, then for the purposes of this system, the object would have a height of zero, therefore would have no gravitational potential energy. And therefore, no work could be performed on the object by gravity.
Explanation:
PLEASE HELP ITS MY LAST QUESTION
Oxygen is a product of the electron transport chain.
True or False
Answer:
False :)
hope this helps m8
Dave is perched on a tree branch. Which factor determines his potential energy?
Answer:
Gravitational Potential Energy is determined by three factors: mass, gravity, and height. All three factors are directly proportional to energy.
Explanation:
Answer:
He is not moving so he is using potential energy
Explanation:
I hope this helps
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Earth has gone through many cycles of ice ages followed by periods of warmer climate. How might these cycles be related to patterns of solar output and patterns of change in Earth’s motion in space?
Answer:
They both go back and forth, such as the climate going from hot to warm, and the tectonic plates of the earth going from closed 300 million years ago to spreading far apart now.
Both of them oscillate, as seen by the earth's tectonic plates, which went from being tightly packed 300 million years ago to spreading widely at the moment.
What is tectonic plate?Tectonic plate is defined as the lithosphere is made up of sections or parts of the upper mantle and crust of the earth. Starting around 4 billion years ago, cooler parts of the Earth's crust were forced downward into the warmer upper mantle, damaging and weakening the surrounding crust. According to the authors, this cycle repeated itself until the weak spots established plate borders.
Slow variations in the Earth's orbit start and conclude these ice eras. However, variations in CO2 concentrations in the atmosphere also play a significant role in driving both cooling at the start of ice ages and warming at their end. During the last ice age, the average global temperature was around 4C lower than it is now.
Thus, both of them oscillate, as seen by the earth's tectonic plates, which went from being tightly packed 300 million years ago to spreading widely at the moment.
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The primary function of insulin in our bodies is to
O
A. store fuel for later use
B. regulate the amount of glucose in the blood
C. increase the efficiency of fuel consumption
o D. prevent digestive bacteria from consuming glucose
Answer:
B. regulate the amount of glucose in the blood
Explanation:
Insulin is a peptide hormone produced by the pancreas that lowers blood glucose levels and induces the transport of glucose within the cell
The structure of the plasma membrane is often explained using the "Fluid Mosaic Model". In this model, the term "fluid" best refers to which of the following?
Group of answer choices
all choices are correct
water can move through the plasma membrane
the plasma membrane is made of a liquid
the fact that the phospholipids and embedded structures are free to move
Answer:
ALL OF THE ABOVE
Explanation:
How does gene regulation relate to organism complexity?
Answer:
Organisms that are more complex, such as eukaryotes, have cells that are specialized for specific functions. Gene regulation needs to be more complex to produce these specialized cells for complex organisms.
Hope this helps!
More complex organisms such as eukaryotes have cells that are specialized for specific functions where gene regulation needs to be more complex for complex organisms to produce these specialized cells.
What is Gene regulation?The process of turning genes on and off, defined as gene regulation which is an important part of normal development. For example, genes turn on and off in different patterns during development to make a brain cell look and function differently than a liver cell or a muscle cell.
Gene expression is controlled at two levels which is transcription which is controlled by limiting the amount of mRNA that can be produced from a particular gene and the second control is through post-transcriptional events which allow the translation of mRNA into protein.
Thus, more complex organisms such as eukaryotes have cells that are specialized for specific functions where gene regulation needs to be more complex for complex organisms to produce these specialized cells.
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The diagram shows the box for an element in the periodic table.
13
Al
Aluminum
27.0
What is the atomic number of the element shown?
Answer:
13
Explanation:
The atomic number for Aluminum (Al) is 13. If you have access to the periodic table, this would've taken a few seconds.
How many electrons are transferred in one ionic bond between sodium and chlorine?
a. 3
b. 2
c. 4
d. 1
Answer:
c i think so if is not correct i am sorry
The image here shows potential outcomes for chromosomes at a particular stage of meiosis. Which questions appropriately assess what is happening in the image. Select ALL that apply.
A) How does crossing over increase the outcome of meiosis?
B) How does fertilization increase genetic diversity in a diploid organism?
C) How does independent assortment increase genetic diversity during meiosis?
D) How many potential combinations result from chromosomes alignment during metaphase I?
E) How does chromosome methylation result in silencing specific genes during gamete formation?
According to the random arrangement of homologous chromosomes in the equatorial plane, the correct question is D) How many potential combinations result from chromosomes alignment during metaphase I?
How does the random arrangement of tetrads occur?During metaphase 1, chromosomes' homologous pairs migrate to the equatorial plane. Once there, they randomly aline facing their kinetochores to the opposite poles.
The random arrangement of tetrads is different in every cell going through the meiosis process. This is because there is no equal alinement between two cells.
When tetrads arrange in the equatorial plane, there is no predetermined order. Each homologous chromosome of each tetrad faces any of the poles and then migrates to it while separating. Each of the chromosomes has two possibilities for orientation at the plane.
When the new haploid cells are formed, the number of variations in each cell is also different and depends on the chromosomes that form that cell.
This random order in the equatorial plane is what introduces variation into the gametes.
The correct question is D) How many potential combinations result from chromosomes alignment during metaphase I?
You can learn more about the random arrangement of homologous chromosomes at
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Answer:
C and D
Explanation:i just did the problem on USA test prep
The concept of induced fit refers to the fact that a. Substrate binding may induce a conformational change in the enzyme, which them brings catalytic groups into proper orientation. b. When enzymes bind substrates, the substrates are bought into proximity to make a chemical reaction favorable. c. When a substrate binds to an enzyme, the enzyme induces a loss of water from the substrate. d. When a substrate binds to an enzyme, free energy is released due to non-covalent interactions.
Answer:
Option A, Substrate binding may induce a conformational change in the enzyme, which them brings catalytic groups into proper orientation.
Explanation:
Induced fit concept refers to introduction of continuous change of enzyme conformation on substrate binding. This change in the shape of enzyme either inhibit or enhance the activity of enzyme. This makes the enzyme catalytic and hence lower the activation energy thereby increasing rate of reaction.