Answer: d
Explanation:
which term describes an
enzyme?
Answer:
A biological catalyst
Explanation:
An enzyme is a biological catalyst and is almost always a protein. It speeds up the rate of a specific chemical reaction in the cell. The enzyme is not destroyed during the reaction and is used over and over.
Why is scientific knowledge more reliable than other types of knowledge?
A. Because false hypotheses are discarded, and results are peer reviewed by other experts to ensure accuracy.
B. Science is not more reliable.
C. Because science only uses facts that are proven 100% true through the use of variables.
D. Because scientists are more reliable than other people.
Answer:
C
Explanation:
Everything around us is all about science...We practice them everyday...All thanks to the scientists after so much examines,they let us know more about many things we don't know much about,they worked on them and improve them so that we can live a convenient life.
How is the law of conservation of mass applied to ecology?
Answer:
The laws of conservation of mass applies to ecology because the transfer of nutrients from organisms to the ground results in excess energy not disappearing
Answer: The law of conservation of mass states that the total amount of mass remains constant in a system. In ecology, this means that when an organism is eaten, its mass is conserved. Some of the organism’s mass is used to make new proteins, and some of it is passed as waste in the form of urine or feces. The rest is converted directly into energy. This energy helps the consumer to move and grow, and it helps it to build and repair new tissue.
Explanation: The written response for you guys
What effect will a heterotropic activator have on a sigmoidal kinetic plot of V versus [S]?
An effect of a heterotropic activator on a sigmoidal kinetic plot of V₀ versus [S] is a shift to the left by the curve.
What is an enzyme?An enzyme refers to a biological catalyst that speeds up the rate of a chemical reaction, especially by lowering the activation energy of its chemical reactants.
In Science, a heterotropic activator is a regulatory molecule which serves as an activator of the enzyme. Thus, an effect of a heterotropic activator on a sigmoidal kinetic plot of V₀ versus [S] would be a shift to the left by the curve.
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In the overall process of glycolysis and cellular respiration, __________ is oxidized and __________ is reduced.
In the overall process of glycolysis and cellular respiration, glucose is oxidized and oxygen is reduced.
This whole process of oxidation and reduction is called aerobic respiration.
In this process glucose reacts with molecular oxygen to produce carbon dioxide and water, hence the carbon atoms in glucose are oxidized.
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Which describes these molecules correctly
The correct description of the given molecule is C. Fatty Acid.
Why is this molecule a fatty acid?A typical fatty acid has a straight chain of carbon atoms. These atoms are then bonded with hydrogen atoms.
At the end of this line, there will be a -COOH bond and at the beginning, there is an H bond. This is what is depicted in the diagram so it must be a fatty acid molecule.
Options for this question include:
A. ribose
B. glucose
C. fatty acid
D. sucrose
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Which energy transformation occurs in the 2nd step of photosynthesis?
Why are there 64 combinations of genetic codons for only 20 different amino acids?
Answer:
Because they all don't code for specific amino acids
Explanation:
Some of them don't code for Amino acids, instead, they code for directions. There are also amino acids that can be coded with multiple codons. this is why there are more codons than amino acids
Explain why the population of girls are more than that of boys in terms of variation.
Answer:
females have 2X chromosomes but males have one 1Y and 1X chromosome therefore if the male donates the x chromosome the baby will be a girl
Bone cells that become surrounded by bone matrix and are located in cavities called lacunae are:.
Answer:
Osteocytes
Explanation:
i studied this
PLEASE ANSWER LOLL 100 points
Answer:
[tex]\textsf {Option 2}[/tex]
Explanation:
Hot springs and geysers are formed by the heating of groundwater. This is evidenced by the bursting of these natural phenomena, releasing heat.
Match the items. The task is to match the lettered items with the correct numbered items. Appearing below is a list of lettered items. Following that is a list of numbered items. Each numbered item is followed by a drop-down. Select the letter in the drop down that best matches the numbered item with the lettered alternatives. a. Host ribosomes cannot translate it. Need to copied to strand to make viral proteins b. Translated directly to make viral proteins c. Integrated viral genome in an animal host d. Enzyme needed to copy RNA to RNA e. Synthesizes complementary ssDNA once inside the cell.
The lettered items are matched with the correct numbered items as follows:
a. -SSRNA: host ribosomes cannot translate it. Thus, it need to be copied to + strand to make viral proteins.
b. +SSRNA: it can be translated directly to make viral proteins.
c. Provirus: the integrated viral genome in an animal host.
d. RNA dependent RNA polymerase: an enzyme needed to copy RNA to RNA.
e. Retrovirus: it synthesizes complementary ssDNA once inside the cell.
What is a genome?A genome can be defined as the complete set of hereditary instructions which is typically found in the deoxyribonucleic acid (DNA) such as:
+SSRNA-SSRNADSRNAIn conclusion, the lettered items should be matched with the correct numbered items as follows:
-SSRNA: the host ribosomes cannot translate it. Thus, it need to be copied to + strand to make viral proteins.+SSRNA: it can be translated directly to make viral proteins. Provirus: the integrated viral genome in an animal host. RNA dependent RNA polymerase: an enzyme needed to copy RNA to RNA. Retrovirus: it synthesizes complementary ssDNA once inside the cell.Read more on genome here: https://brainly.com/question/2193677
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Complete Question:
Match the items. The task is to match the lettered items with the correct numbered items. Appearing below is a list of lettered items. Following that is a list of numbered items. Each numbered item is followed by a drop-down. Select the letter in the drop down that best matches the numbered item with the lettered alternatives.
a. Host ribosomes cannot translate it. Need to copied to strand to make viral proteins
b. Translated directly to make viral proteins
c. Integrated viral genome in an animal host
d. Enzyme needed to copy RNA to RNA
e. Synthesizes complementary ssDNA once inside the cell.
1. +SSRNA
2. -SSRNA
3. Retrovirus
4. RNA dependent RNA polymerase
5. Provirus
Why do some codons code for the same
amino acid as another codon?
A. It is due to mutations.
B. There are only 20 amino acids and 64 possible
combinations.
C. Each codon is unique and they all code for different
amino acids.
which type of study that a student is doing by exploring the external features of an animal
Answer:
analyzing behaviors of living animals with a common ancestry
analyzing embryos and skeletons of animals of the same species
analyzing DNA sequences and embryonic development
analyzing the the fossilized remains of animals from different time periods
When must personnel receive training to perform animal procedures?
The personnel must receive training to perform animal procedures before any procedures are performed on the animal.
What is animal care during experimentation?The animals used for research and experiments should be taken care of in. such a way that they can be replaced, reduced and refined.
According to the animal guide policy, any scientist that would use an animal for a research work would have to undergo a training before performing any procedures on the animal.
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Which of the following is an example of a beneficial mutation?
A.
a mutation causing uncontrolled cell division in human tissue cells
B.
a mutation inhibiting human immunodeficiency virus from entering the host cell
C.
a mutation resulting in partial or complete loss of chlorophyll pigments in plants
D.
a mutation resulting in a squirrel being born without ovaries
Answer: A
Explanation: TOOK THE TEST OK
ASAPPPP EASYYYY ILL MARK BRAINLY
Select all direct effects increasing UVR have on animals?
is
a) reduces immunity to diseases
a direct effect increasing UVR have on animals
a. reduces immunity to diseases
The effect increasing UVR has on animals is reducing immunity to diseases.
What is UVR?A body could be heated to an incandescent temperature to generate UV radiation, which seems to be the case with solar UV, or an electric current would be sent through a gas, typically vaporized mercury, to generate UV radiation.
What are diseases?A disease would be a specific aberrant state that adversely affects an organism's structure as well as function on the whole or in part, and which could be not immediately brought on by any external trauma.
Therefore, the correct answer will be an option (a)
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why do cell biologists study yeast?
Biologists study cells due to the cell relation to that of animal cell
What are yeasts?Yeast are eukaryotic organisms which are part of the fungus kingdom.
They are important to biologist because they tend too carry out all the functions of the eukaryotic cells and they are known to be closely related to animals
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Which of the following is not a characteristic of living things
Answer:
C. Must be able to reproduce
Explanation:
A. All living things must grow and develop
B. Single-celled organisms exist and are considered living things.
D. All living things must have DNA in their cells.
1.Is there an industrial or disposal process of using sieving to separate mixtures? Describe any environmental impact it might have
Answer:
Yes
Explanation:
There are plenty of evidences and uses of sieving
It was begun by Romans
Nowadays it's used to separate several mixtures like sands for construction,food materials etc
Which thermoregulation strategy helped the hummingbird decrease its body
temperature?
a. flying
b. eating
c. basking in the sun
d. resting in the shade
submit
The thermoregulation strategy helped the hummingbird decrease its body
temperature is resting in the shade. Thus, option "D" is correct.
What is Thermoregulation?Thermoregulation itself is actually a branch of homeostasis. Homeostasis is defined as the internal regulation of body environment which includes the vital organs of the body such as the heart, liver, brain and contraction of skeletal muscles.
Thus, option "D" is correct.
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Axial skeleton (how many bones and what?)
Axial skeleton is composed of 80 bones in the body system.
What is Axial skeleton?
These are bones which are found in the central core of the body and examples include skull, vertebrae etc.
The axial skeleton comprises of 80 bones which perform various types of functions in the body.
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Which bronchus is about 5cm long and slightly narrower and more horizontal than the one on the opposite side?.
Answer:
Explanation:
left main bronchus
During an action potential, the rapid decrease in sodium permeability and simultaneous increase in potassium permeability is responsible for __________.
the repolarization of the cell.
Mechanism :
Action potentials are signals that are sent and received by muscle and nerve cells. Because of the negative concentration gradient in the resting membrane potential of nerve cells, there are more positively charged ions outside the cell than inside. There are more sodium ions outside the cell and more potassium ions within because these positively charged ions are sodium ions. Action potentials cause the membrane to depolarize, which is followed by the process of repolarizing the cell. The membrane potential changes and reverts to the negative value of the resting potential during repolarization. The potassium channels open and the sodium channels close at this stage, allowing the nerve cell to lose positively charged ions.
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The sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as a/an ______________.
receptor
effector
stimulus
response
The sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as a receptor.
What are nerve receptors?Nerve receptors can be defined as biological structures capable of converting external/internal stimuli to electrical impulses.
Nerve receptors include different types of cellular structures located in eyes, skin, mouth, nose, etc.
In conclusion, the sensing component of the feedback system that senses the changes in the environment and generates nerve impulse is known as a receptor.
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A student lifts a set of books off a table and places them in the upper shelf of a book case which is 2 meters above the table. If she applies a force of 5 newtons to lift these books, what is the work done?
If a force of 5 newtons is applied to lift books 2 meters, the work done is 10 newton meters.
How work can be calculated?The formula for calculating work is Work = Force x Distance so for calculating work we have to multiply 2 meters with 5 newtons force then we get 10 newton meters.
So we can conclude that If a force of 5 newtons is applied to lift books 2 meters, the work done is 10 newton meters.
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From the calculations, the work done on the book is 10 J.
What is work?In science, work is said to be done when the force applied moves a distance in the direction of the force.
Given that;
Force applied = 5 N
Distance covered = 2 m
It the follows that the work done is;
W = F * d
W = 5 N * 2m = 10 J
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Convert this measurement, 6.410102 , from scientific notation to standard notation.
This measurement, 6.410102 , is from scientific notation to standard notation. The answer will be 6.41
What is Scientific notation?Scientific notation is a way of writing numbers in two parts:
Only the figures (with the decimal point after the first digit), followed by × 10 to the power that moves the decimal point where you should be (that is, showing how many positions the decimal point moves).
On the other hand, the standard notation is the one that is normally used for not-so-large numbers by putting one digit behind another.
Thus, The answer will be 6.41.
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What blood vessel is found in the anterior-medial thigh?
The blood vessel that is found in the anterior-medial thigh is the femoral artery.
What is the femoral artery?The femoral artery is a major blood vessel that transports blood from the abdomen to the lower limbs.
The femoral artery is fundamental because it transports high volumes of oxygen-rich blood.
In conclusion, the blood vessel that is found in the anterior-medial thigh is the femoral artery.
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Explain how the wall thicknesses are related to the functions of the chambers.
The explanation of how the heart wall thicknesses are related to the functions of the chambers are as explained below.
How to know heart wall thickness and chambers?Heart chambers are four hollow spaces within the human heart which are made up of two atria and two ventricles.
The thickness of the heart wall is related to the force of contraction required in the heart in the sense that the left ventricle which is the thickest wall contracts with the greatest force and creates the greatest amount of blood pressure in the heart chambers.
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Some people have their gall bladder surgically removed to the formation of gall stones. Describe the function of the gall bladder and explain how a gall bladder removal would have on their digestion.
Underneath the right side of the liver, the gallbladder is a pear-shaped organ.
What is the function of gall bladder?Its primary function is to gather and concentrate bile, a digestive fluid made by the liver. The gallbladder is where bile is kept after the liver produces it. The gallbladder receives a signal from the stomach when you eat. Bile is released from the gallbladder when it contracts, and it travels through the gut via the major common duct. Bile combines with the food there and aids in digestion.
When the gallbladder is removed from a healthy person, there are rarely any obvious health or digestive issues, though there is a slight chance of diarrhea and fat malabsorption.
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