Answer:
A
Explanation:
The polar regions have long winters and short, cool summers BC of climate change and extra warmth. :))
Answer:
A
Explanation:
Its talking about what they had overall in that region
Determine what type of tonicity describes the cell when compared to the described solution: an Isotonic Cell(s), Hypotonic Cell(s), or Hypertonic Cell(s): The concentration of dissolved substances (stuff) in the solution is lower than the concentration inside the cell.
Answer:
Hypotonic Tonicity
Explanation:
Hypotonic tonicity is when the concentration of dissolved substances is lower in the solution outside the cell than the concentration inside the cell.
what level of organization in protein structure are hydrogen bonds within molecules?
Answer:
Proteins have four levels of organization. Primary structure refers to the linear sequence of the amino acids connected by the peptide bonds. The secondary structure consists of local packing of polypeptide chain into α-helices and β-sheets due to hydrogen bonds between peptide bond – central carbon backbone.
Explanation:
Secondary structure is the level of organization in protein structure where are hydrogen bonds within molecules.
The secondary structure is the folding that the polypeptide chain adopts thanks to the formation of hydrogen bonds between the atoms that form the peptide bond.
Hydrogen bonds are established between the -CO- and -NH- groups of the peptide bond (the first as an H acceptor, and the second as an H donor).
In this way, the polypeptide chain is capable of adopting lower free energy conformations, and therefore more stable.
Several types of conformations can be distinguished that determine the secondary structure of a protein :
α-helices.β-sheets.
Therefore, we can conclude that secondary structure is the level of organization in protein structure where are hydrogen bonds within molecules.
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Which of the following is a common health consequence of limited physical activities and no exercise?
Increased risk of Type 2 diabetes and heart disease
Slower reaction times and blurred vision or speech
Increased risk of cancer due to UV light sensitivity
Stronger immune system and decreased illness
Increased risk of Type 2 diabetes and heart disease is a common health consequence of lack of physical activities and Exercises.
Physical activities and Exercises.Physical activities and Exercises refer to various body movements or activities that are carried out by individuals for good health and well-being.
Some of these activities or exercises including dancing, walking,cycling, jumping, playing and so on.
Therefore, Increased risk of Type 2 diabetes and heart disease is a common health consequence of lack of physical activities and Exercises because these activities help to burn fat and excess glucose. It improve the proper conditioning of the heart and gives vitality to the body. Type 2 diabetes is as a result of too much accumulation of glucose that are not burn.
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Answer: The answer is A.
Explanation: Took the test
Will be marked brainliest
Say something nice
You're a gift to those around you. You're a smart cookie. You are awesome! You have impeccable manners. People would always want to be your friend! you are always cool .
Which of the following is NOT an example of metabolism
a.
building up of larger molecules from smaller ones
b.
releasing energy to perform specific body functions
c.
controlling the basic functions and activities of the cell
d.
breaking down of larger molecules or substances into smaller ones
Answer:
c.
Explanation:
A. is a type of metabolism called anabolism
B. is a type of metabolism called catabolism
D. is often the result/purpose of catabolism
C. the basic functions and activities of the cell is considered metabolism.
The law of supply and demand states that a product becomes more valuable if:
O It has a short demand and is in O short supply.
It has a great demand but is in short supply.
O It has a great demand and is in great supply.
O It has a short demand but is in great supply.
Answer:
it has a short demand but it is in great supply
Which word is a synonym for leave?
Sprout
Depart
Enter
Return
Answer:
B
Explanation:
This is an English subject, not biology. But the answer is Depart.
Depart is a synonym for leave.
The ability of large trees and plants to draw water up through there trunks/stem is due to
A. adhesion
B. cohesion
C. hydrogen bonding
D. surface tension
Answer:
Answer if B, Cohesion
Explanation:
Think about if you had glue and paper, the glue sticks to the paper, the same as water would stick to the sides of the tree/stem, to draw the water up.
Wood is a substance that burns in the presence of oxygen. Which best describes this property of wood?
O reactive
O combustible
metallic
O sour
Cell Differentiation and Specialization
Pre-Test
Active
2
3
4
5
6
7
8
10
Which type of cell is capable of self-renewal?
O stem cell
O blood cell
O muscle cell
O neuron
Answer:
blood cell
Explanation:
because bloodcell rotating all over the body
Answer: Stem Cell
(Got it right on edg.)
Some organelles, such as the endoplasmic reticulum and Golgi bodies, have a large and folded structure. What is an advantage of these organelles having a folded structure?
* A. The folding causes the cytoplasm to flow throughout cell and speeds up nutrient transport.
* B.
Protein packaging speeds up with the increased surface area created by the folding.
* C.
The folds trap water, carbohydrates, and proteins until the cell can digest them.
* D.
Nutrients and gases travel along the folds until the cell uses them.
the ability to move things through them
Explanation:
An advantage of the organelles having a folded structure is that protein packaging speeds up with the increased surface area created by the folding. The correct option is B.
What is cell organelle?An organelle is a subcellular structure that, like an organ, has one or more specific jobs to do in the cell.
The nuclei, which store genetic information, mitochondria, which produce chemical energy, and ribosomes, which assemble proteins, are among the more important cell organelles.
They are involved in a variety of processes, including energy production, protein and secretion formation, toxin elimination, and response to external signals.
They increase the surface area of the inner membrane, allowing more proteins and ion exchange across the membrane, allowing the mitochondrion to do its job faster.
The folds within the mitochondria function to increase the surface area of the mitochondrial membrane.
Thus, the correct option is B.
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what is qualitative in biology
Answer:
To describe or define the characteristics of measurements, or recations.
This pedigree tracks a recessive trait. What could person 3's genotype be?
Select all possibilities,
Based on the pedigree and the recessive nature of the trait, it can be concluded that the genotype of Person 3 is Aa.
What is recessive trait?A recessive trait is a trait or character encoded by a recessive gene.
A recessive trait does not appear in every generation bit only appears in the absence of the dominant trait.
From the pedigree shown, the recessive trait is h0m0zygous in 2 while 1 is heterozygous for the trait.
Person 3 is heterozygous recessive for the trait too.
Therefore, the genotype of person 3 is Aa.
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Which of the following best describes an ecosystem in a neighborhood garden?
(A)the tomato plants, the fungi, and the soil
(B)the basil plants
(C)the tomato plants and the fungi
Answer:
Hey bro Ur answer is A)
Explanation:
The definition of an ecosystem is that ecosystem consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows.
The tomato plants, the fungi, and the soil all interact to sustain each other.
4. An increase in calcium concentration in the sarcoplasm will cause which of the following?
A. displacement of troponin tropomyosin complex from the actin binding sites
B. muscle relaxation
C. rapid repolarization of the muscle membrane
D. breaking of the actin/myosin cross-bridges
E. activation of calcium pumps in the sarcoplasmic reticulum
Answer:
B. muscle relaxation
Explanation:
Sarcoplasmic reticulum store intracellular calcium in skeletal muscle cells.
The concentration of calcium helps in the contraction and relaxation of muscles. During depolarization, the calcium concentration increases that change conformation of troponin and tropomyosin and allows the actin to bind with myosin, resulting into relaxation of the muscle cell.
Hence, the correct option is "B. muscle relaxation".
Hemoglobin is a quaternary protein
structure on a red blood cell involved in
oxygen transport. Hemoglobin A1 has two
a-chains and two ß-chains. Hemoglobin A2
has two a-chains and two & chains. In spite
of the structural differences, both
hemoglobin A1 and A2 perform the same
functions.
Which of the following statements explains
why both hemoglobin types perform the
same functions?
Answer:
hemoglobin binds to oxygen and releases it near cells that are performing cellular respiration
Answer:
The amino acid sequences changed the alpha and beta chains because of molecular interaction.
Which of these tasks would a hydrologist be most likely to perform?
A. Determining the species of a recently collected specimen
B. Estimating the age of recently discovered fossils
C. Estimating the amount of groundwater in an aquifer
D. Determining the best method to extract underground oil
Hydrologists are most likely to perform actions relating to estimating the amount of groundwater in an aquifer.
HydrologistsHydrologists are scientists that specialize in the study of how water relates to the various crusts of the earth.
Hydrology in itself refers to the branch of science that studies how water moves relative to the earth's crusts.
Thus, species identification, age of fossils, or extracting underground oils have nothing to do with the work of hydrologists.
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Which stage of the cell cycle is the stage where the nucleus of the cell divides?
Answer:
Mitotic | Anaphase
Explanation:
Can someone please help me
How does the nervous system help the excretory system maintain homeostasis
Explanation:
The nervous system can detect changes on the salt levels in the blood through urine in the excretory system. The excretory/urinary system help the body maintain homeostasis by filtering waste from blood, getting rid of waste, and regulates fluid levels in the body
Which of the following is NOT a type of renewable energy?
A: Solar
B: Biomass
C: Nuclear
D: Geothermal
The law of conservation of energy states that energy cannot be created or destroyed, but energy can change:.
What BEST describes the role of water molecules in the chemical reactions of photosynthesis?
Water molecules are an intermediate c. Water molecules are an input of
of photosynthesis, they absorb light photosynthesis, they split apart and
and pass the energy to chlorophyll supply electrons to chlorophyll to
make glucose
b. Water molecules are an intermediated Water molecules are an output of
of photosynthesis, they are part of the photosynthesis, they are released at
electron transport chain
the end of the electron transport chain
Answer:
The options to this question is unclear. However, the question will be answered comprehensively.
Water molecules are an input of photosynthesis; they split apart and supply electrons to chlorophyll to make glucose.
Explanation:
Photosynthesis is the unique process through which green plants manufacture their food (glucose). This photosynthetic process occurs in two stages viz: light dependent and light independent stages. The light dependent stage, which occurs in the thylakoid membrane of the chloroplast, involves the synthesis of NADPH and ATP.
Water molecules are reactants (inputs) of this light stage, where they are split by the energy absorbed by chlorophyll in a process called PHOTOLYSIS. Water molecules get split into hydrogen ions (proton), oxygen gas and electrons. The electrons are accepted by NADP+ while the protons are used to build a proton pump for the synthesis of ATP. Both NADPH and ATP are used in the next stage to make glucose.
Which of the following layers of the atmosphere where the molecules are gravitationally bound to that body?
a.
Thermosphere
b.
Exosphere
c.
Stratosphere
d.
Mesosphere
Answer:
b.
Explanation:
The air in the exosphere is very thin, and is made up mostly of helium, and hydrogen which traces other gases such as atomic oxygen and carbon dioxide.
help please i’m in 6th grade
Answer:
C
Explanation:
For example, if we had to control our heart beat the our life would be at risk all the time.
Proteins in the cell membrane that identify the cell are called
A. enzymes
B. transport proteins
C. cell-surface markers
D. receptor proteins
Answer:
Proteins in the cell membrane that identify the cell are called cell-surface markers (option C).
Explanation:
Cell surface markers are integral membrane proteins, whose function is to identify specific cell lines, allowing intercellular recognition and communication.
The specific type of cell marker provides the basis for cell classification, allowing studies to be performed on immune system cells, stem cells or atypical cells such as those found in cancer.
The other options are not correct because:
A. Enzymes are proteins that participate in metabolic reactions.
B. Transport proteins, although they are also part of membrane proteins, perominate the passage of specific substances through the membrane.
D. Receptor proteins allow the identification of specific molecules, such as hormones, to couple with them and promote actions inside the cell.
Proteins in the cell membrane that identify the cell are called CELL-SURFACE markers (Option C).
Cell surface markers are specific proteins localized on the cell surface or glycoproteins, which can be used as molecular markers that evidence specific cell types/lineages.
For example, cell surface markers can be used for the identification of the lineage and/or phase of differentiation in lymphocytes such as T cells and B cells.
In lymphocytes, the cell surface markers can be divided into three classes: surface immunoglobulins, differentiation antigens, and membrane receptors.
In conclusion, proteins in the cell membrane that identify the cell are called CELL-SURFACE markers (Option C).
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follow the steps outlined below to determine whether each solution is hypotonic, hypertonic, or isotonic to the cell
Answer:
the solution is hypotonic if there is a lower solute concentration in the solution than in the cell
the solution is isotonic if the solute concentration is equal in the cell and solution
the solution is hyperotonic if there is a higher solute concentration in the solution than in the cell
Which describes slate? non-foliated igneous does not split into layers grains arranged in parallel layers
The answer is D. Grains arranged in parallel layers.
Answer:
D. arranged in parallel layers
Explanation:
I just took the test and if you see an image of slate then you will see it is arranged with parallel layers.
HOPE IT HELPS!!!
Which of the following factors are considered abiotic?
A. Rain
B. Bacteria
C. soil
Answer:
rain
Explanation:
i did some research and i hope i got this right if it isn't pls let me know
PLEASE HELP
In living substances, the hydrolysis of ATP to ADP and P is virtually the sole supply of energy. However, ATP does not release this energy spontaneously but only in cell machinery where some work is being carried out. In such cases, special enzymes (ATPases) are necessary for the hydrolysis of ATP. How does the universality of ATP and the diversity of enzyme systems relate to the unity and diversity of life through evolution?
Answer
Cells use the hydrolysis of adenosine triphosphate, abbreviated as ATP, as a source of energy. Symbolically, this reaction can be written as
[tex]ATP(aq)+H_{2}0(l)- > ADP(aq)+H_{2} PO\frac{}{4} (aq)[/tex]
where ADP represents adenosine diphosphate. For this reaction, a. Calculate at b. If all the free energy from the metabolism of glucose
[tex]C_{6} H_{12}O_6(s)+6O_2(g)- > 6CO_2(g)+6H_2O(l)[/tex]
goes into forming ATP from ADP, how many ATP molecules can be produced for every molecule of glucose?
[tex]C_6H_1_2O_6(s)+O_2(g)- > 6CO_2(g)+6H_2O(l)[/tex]
goes into forming ATP from ADP, how many ATP molecules can be produced for every molecule of glucose?
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