Answer:
They develop in the TESTICLES.
Explanation:
TESTICLES are the two OVAL ORGANS that produce SPERM in MEN and other mammals, enclosed in SCROTUM behind the PENIS.
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is a/an:__________.
a. synthetic drug
b. antibiotic
c. antimicrobial drug
d. competitive inhibitor
Answer:
antimicrobial drugs
Explanation:
An antimicrobial is a substance that kills or inhibits the growth of microorganisms such as bacteria, fungi, or protozoans.
Answer:
[tex]\boxed{Option C}[/tex]
Explanation:
A compound synthesized by bacteria or fungi that destroys or inhibits the growth of other microbes is an anti-microbial drug. Anti means "against" so anti microbes mean against microbes. Antimicrobial drugs are synthesized by bacteria and fungi and are used against microbes.
the number of possible genetically different gametes for an organism equals 2n where n is the number of pairs of chromosomes if an organism has six pairs of chromosomes how many different gametes ca it produce
A. 64
B. 256
C. 32
D. 128
Answer:
64
Explanation:
Which kind of joint allows the arms to swing in circles? hinge
ellipsoidal
ball-and-socket
sliding
Answer:
hinge
Explanation:
BALL AND SOCKET Explanation:
QUESTION 20 "Nitrous acid causes all possible transitions (A<-- -->G, C<-- -->T). If a protein has an alanine at position 65, what amino acid(s) would be likely to replace alanine as a result of nitrous acid mutagenesis
Answer:
Explanation:
Nitrous acid mutation occurs when a Nitrogenous base is replaced by a keto group.
Alanine is replaced by hypoxanthine,
Cytocine is replaced b Uracil
Guanine is replaced by Xanthine.
Nitrous mutation often affects Adenine, Cytocine and guanine. The Nitrogenous base is changed into another substance(keto group)
Alanine at position 65 would be replace by hypoxanthine a keto group which is a form of nitrous mutation.
Other forms of amino acid mutation
Mutation of amino acid nitrogenous base can either be transition or transversion.
Transition is the substitution of a purine base by another purine base. Since purine are Adenine and Guanine
Pyrimidine is cytocine and thymine or Uracil. Adenine can be substituted for by guanine or guanine by adenine
E.G A - G now G - A where Guanine substitute Adenine
Whole transversional substitution can also occur which involve a purine been substitued for by a pyrimidine or pyrimidine by a Purine.
A - G
Now C-G where cytosine substitute Adenine.
Ball-and-socket joints allow this gymnast to complete many of the routines that she performs. A gymnast is shown. In which part of the body is a ball-and-socket joint found? wrist elbow hip knee
Answer:
c
Explanation:
There is a ball-and-socket joint in the hip area of the body. So, the correct option is C.
What is Ball-and-socket joint?The hip is home to the ball and socket joint. It is situated where the pelvic bone and femur (the thigh bone) meet. An example of a ball and socket joint is one in which one bone exactly resembles a ball and another bone precisely resembles a hollow or socket into which the first bone would fit.
This facilitates the bone's mobility in all planes. As a result, the hip has a ball and socket joint and can move in all directions. When compared to other joints, which are found in the fingers, knees, elbows, and toes, ball-and-socket joints, such as those in the shoulder and hip, permit only bending and straightening motions.
Therefore, the correct option is C.
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Your question is incomplete, most probably the complete question is:
Ball-and-socket joints allow this gymnast to complete many of the routines that she performs.
In which part of the body is a ball-and-socket joint found?
A. Wrist
B. Elbow
C. Hip
D. Knee
When should we drink coconut oil
Answer:
You can drink coconut oil
Explanation:
Including 2 tablespoons of coconut oil per day,
what is ecological footprint
Explanation:
Ecological footprint:
Is a Measure the area required by an individual, population or activity of biologically produced land and water to produce all the resources it consumes and absorb the waste it generates, using prevailing technology and resource management practices. Hope this helps and have a great day! Good luckDrag each tile to the correct box
Place the items in order from highest to lowest degree of internal organization
tissue
organ system
HID
&
Answer:
cell
tissue
organ
organ system
I hope this helps
Order from highest to lowest degree of internal organization are organ system, organ, tissues, cell.
What are the characteristic feature of tissue?A group of cells with similar structure and performing specific function called as tissue.
In animal it can be up four types such as connective, muscle, nervous, and epithelial tissue.
Connective tissue is made up of cells and gel like substances. Except lymph and blood all tissue contains collagenous fibers.
Fibers Of connective tissue help in binding of bones, movement of lungs, physical support to cell.
Muscle tissue are up different types like skeletal, cardiac and smooth muscle.
Skeletal muscle help in binding of tendons to bones followed by movement.
Cardiac muscle in heart and help in contraction to pump blood.
Smooth muscle in the intestine helps in movement of food through the digestive tract.
Nervous tissue is present in the brain, spinal cord, and peripheral nerves, made up of neurons.
Epithelial tissue are present on the surfaces the skin, the trachea, the reproductive tract, provide protection to organs.
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What is a recombination? How is it different from mutation
what differences if any, would assay show if performed using milk that was past its expiration date and had an off-putting odor.
Answer:
The color will disappear.
Explanation:
Due to the absence of oxygen in the expired milk, the actual color of milk disappear. There are certain bacteria such as Pseudomonas present in the milk which is responsible for the change in color. With the passage of time, Pseudomonas starts growing in the milk and release certain toxin which spoils milk. They grow in both condition i. e. in the presence and absence of oxygen. Change in color is due to chemical releases by Pseudomonas.
(1)Cells, like any factory, need energy to operate.
(2)Two different kinds of cellular power plants have evolved: some cells absorb energy directly from the sun, while others gather energy by eating other organisms that have stored it.
(3)Plants acquire energy directly from sunlight through the process of photosynthesis.
(4)In this process, molecules of chlorophyll or related pigments absorb photons from the sun.
(5)The photons’ energy is converted into chemical energy that the plant can use to grow and reproduce.
(6)In the course of this rather complicated chemical process, carbon dioxide and water from the cell’s surroundings are converted into glucose plus oxygen.
(7)The net effect of photosynthesis, then, is to remove carbon dioxide from the air, produce energy for the cell, and give off oxygen as a waste product.
(8)Animals, unlike plants, cannot convert the sun’s energy directly to food, and therefore must get theirs by eating plants or by eating animals that eat plants.
(9)The food you eat contains energy in the form of the bonds that hold its molecules together.
(10)After the food has been broken down, it is taken into the cells, where its energy is released by a process called respiration.
(11)This process allows molecules like glucose to combine with oxygen, thereby releasing the energy tied up in the molecular bonds.
(12)Its waste product is carbon dioxide, which you breathe out.
In sentence 7, the word net means
a. sensible.
b. final.
c. unlikely.
d. negative.
Answer:
The answer is option B.
Final
Hope this helps you
Which way of organizing DNA best ensure that the information contained on each strand can be accessed
and read?
Why?
NEED ANSWER ASAP SOMEBODY HELP
The information stored in the order of bases is organized into genes: each gene contains information for making a functional product. The genetic information is first copied to another nucleic acid polymer, RNA (ribonucleic acid), preserving the order of the nucleotide bases. Genes that contain instructions for making proteins are converted to messenger RNA (mRNA). Some specialized genes contain instructions for making functional RNA molecules that don’t make proteins. These RNA molecules function by affecting cellular processes directly; for example some of these RNA molecules regulate the expression of mRNA. Other genes produce RNA molecules that are required for protein synthesis, transfer RNA (tRNA), and ribosomal RNA (rRNA).
Match each image with the life function the organism is performing.
Predict the classification level that would first differentiate these snakes from a frog or a toad a.genus b.order c.phylum d.class
Answer:
d.class
Explanation:
All living organisms were grouped into a system of classification comprising of 7 levels i.e. Kingdom, Phylum/Division, Class, Order, Family, Genus, and Species. Organisms grouped into the same level of classification has something in common.
In this question, a snake, frog or toad are different species of organisms. They all belong to the same Kingdom, which is Animalia. Snakes, toads and frogs are also commonly grouped into the Phylum Chordata because they all possess a backbone.
However, the next level of classification, which is CLASS, is the first to differentiate the snake from a toad or frog. Snakes belong to the class: Reptilia while toads and frogs belong to the class: Amphibia i.e. animals that can live on both land and water.
Answer:
The classification level that would first differentiate snakes from a frog or a toad is the Class.
Both animals belong to the Animal Kingdom, both also belong to the Phylum of Chordata.
However, when it comes to Class, the snakes belong to the Reptilia, while the frogs belong to the Amphibia.
Kindly note that when it comes to levels of classification in the animal kingdom, there are 7 levels namely
Kingdom Phylum or division ClassOrderFamilyGenus, and Species. The largest group is the Kingdom while and Species is the smallest.Cheers!
The short-term controls of blood pressure, mediated by the nervous system and bloodborne chemicals, primarily operate via all but which of the following?
a. reflex arc associated with vasomotor fibers
b. reflex arcs involving baroreceptors
c. altering blood volume
d. centers in the medulla oblongata and the pons
Answer:
c. altering blood volume
Explanation:
The sympathetic nervous system acts to modulate blood pressure during short-term periods by modifying arterial pressure. The catecholamine hormone levels may be associated with an increase in the blood pressure by narrowing the blood vessels. Catecholamines are hormonal neurotransmitters released by the adrenal glands. These hormones derive from the metabolism of tyrosine amino acids and include, among others, adrenaline, noradrenaline and dopamine.
What is the role of RNA? edgunuity please
Answer:
Role of RNA in Biology. ... RNA is a unique polymer. Like DNA, it can bind with great specificity to either DNA or another RNA through complementary base pairing. It can also bind specific proteins or small molecules, and, remarkably, RNA can catalyze chemical reactions, including joining amino acids to make proteins.
Explanation:
RNA determines the sequence of amino acids in proteins and polypeptides by a two- step process: transcription of DNA produces mRNA in the nucleus, then translation of the mRNA to tRNA takes place at the ribosome in the cytoplasm.
Hope it helps.
Joyce and Linda are identical twins who are 50 years old and enjoy exercising daily. Joyce avoids eating any dairy or animal products and eats granola made with canola oil for breakfast. Linda prefers rich foods, and eats bacon, eggs, and buttered toast each morning. Which statement describes a logical inference that can be made from the provided information? Butter has higher levels of saturated fats in it than canola oil. Linda and Joyce both have high levels of "bad" cholesterol. Butter contains a small amount of polyunsaturated fats. Linda has a higher level of "bad" cholesterol than Joyce.
Answer:
Linda has a higher level of "bad" cholesterol than Joyce.
Explanation:
bad cholesterol is in lots of fatty and dairy food such as meat,in this case pork, and butter.
Answer:
Linda has a higher level of "bad" cholesterol than Joyce.
Explanation:
cholesterol= saturated fats
A mutation of the proteolytic enzyme Trypsin results in a stable covalent bond between one of the catalytic amino acids of the protease and its protein substrate. Which of the following are probably true?
a. The enzyme would become inactive.
b. The enzyme and substrate would be stuck together.
c. The delta-G of the proteolysis reaction would change.
d. The rate of the catalyzed reaction would increase.
b. The enzyme and substrate would be stuck together.
Match the foods with their functions in the living organisms they come from.
1. tuna
2. milk
3. potato
4 . lettuce
5. black bean
6. egg
A. leaf from a plant; site of photosynthesis
B. a seed containing the embryo and food reserve
C.a high nutrient liquid produced by mammals
D.energy storage for plant
E. an energy supply for a growing embryo
F.the skeletal muscle used for voluntary movements
Answers:
1 - F
2 - C
3 - D
4 - A
5 - B
6 - E
Explanation:
tuna - the skeletal muscle used for voluntary movements.
milk - a high nutrient liquid produced by mammals.
potato - energy storage for plant.
lettuce - leaf from a plant; site of photosynthesis.
black bean - a seed containing the embryo and food reserve.
egg - an energy supply for a growing embryo.
Fish have a two chambered heart.
Please select the best answer from the choices provided
T
ОО
F.
Answer:
it is TRUE that they DO have a two chambered heart
Answer:
true hgtgfgcgfxsggddcfdddss
Organize the levels of organization in the human body from the smallest (left) to the largest (right) component.
organ
organ system
cell
tissue
Answer:
Cell, Tissue, Organ, Organ System
Explanation:
Cell, tissue, organ and organ system are the levels of organization in the human body from the smallest to the largest component.
What is cell?Cell is the basic structural and functional unit of an organism.
What is tissue?Tissue is formed by the group of cells.
What is organ?Organ is formed by the group of tissues.
What is organ system?Organ system is formed by the group of organs.
What are levels?Levels are the arrangements.
What is organization?Organization is the hierarchy of biological systems.
Therefore those are the organization levels in the human body.
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If a cat with long black hair (Llbb) is crossed with a cat with short hair (llbb). What is the possibility that an offspring will have long black hair or short hair?
Answer:
50% long black hair and 50% short hair
Explanation:
Attatched is a screenshot of a punnett square that shows the possibilities of the offspring having long or short hair. In short, the genetics of long black hair only need one big "L", while the genetics of short hair need to have 2 short "l"s. So when we draw the punnett square and combine the genetics, we get 50% have Llbb, and 50% have llbb
Some human proteins that are used in therapeutics, such as insulin, can be produced by genetically modified yeast. Though genetically modified bacteria can also be used to produce these therapeutics, yeast is considered by many to be the superior type of organism to use for this purpose. What is the advantage of using yeast cells instead of bacterial cells when expressing human proteins?
a. Yeast cells grow faster than bacterial cells when expressing human proteins.
b. Yeast cells splice mRNA in an identical manner as human cells.
c. Yeast cells fold and modify proteins in a manner similar to human cells.
d. Yeast cells use the same genetic code for specifying amino acids as human cells.
Answer:
The correct answer is c.Yeast cells fold and modify proteins in a manner similar to human cells.
Explanation:
Yeasts are known as one of the most useful microorganisms to humans due to the best known eukaryotic microorganisms.
As yeasts are eukaryotes like humans and hence have the system for post translational modification that is needed for proper folding of eukaryotic genes. Due to this fact and advantages yeast is considered by many to be the superior type of organism to use for for producing proteins.
Thus, the correct answer is C. Yeast cells fold and modify proteins in a manner similar to human cells.
7) We learned that post-transcriptional processing is very important in eukaryotic cells, such as those in our own
bodies. Of what possible advantage could this be to a cell? Name one part of mammalian (including human) function
that relies very much on the 'slicing and recombination that is part of post-transcriptional processing.
Answer:
Alternative splicing is a posttranscriptional modification that enables to produce many proteins from a single gene, thereby increasing its functional diversity. In mammals, alternative splicing has shown to be associated with the control of different signaling pathways in response to environmental conditions.
Explanation:
Posttranscriptional modifications are required for the maturation of primary RNA transcripts, and it is associated with the process of translation into proteins. These types of modifications include the alternative splicing in order to remove introns of pre-mRNA molecules, the addition of a cap to the 5' end and polyadenylation of the 3′ end of mRNAs, etc. For example, the polyadenylation (poly-A) of mRNA tails provide stability to these molecules, thereby they are more resistant to exonucleolytic degradation and thus can be translated into proteins.
A control variable is: A. Measured to show the effect of a change. B. Collected to draw conclusions. C. Changed to test a hypothesis. D. Kept the same to make an experiment a fair test.
A control variable Kept the same to make an experiment a fair test. Thus, option D is correct.
What Is a Control Variable ?
Variables may be controlled directly or indirectly by randomization methods.
A control variable is a type of variable unit which held constant in a research study.
It’s variability does not involve study aims but it is controlled and also show an influencing effect on the study outcomes.
It limits the effect of confounding and other extraneous variables and enhance the internal validity of a study.
In an experiment, the effect of an independent variable on a dependent variable can be investigated, for this control variables will help to understand that the results are caused by manipulated data in experiments.
Thus, option D is correct.
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After duplication, at what point does a cell become two cells with identical DNA? starting in prophase end of anaphase end of cytokinesis
Answer:
The correct answer is - end of cytokinesis.
Explanation:
Cytokinesis :- a procedure that partitions the cytoplasm and plasma layer of a cell, bringing about two indistinguishable cells that contain their own DNA, nucleus, nuclear membrane, and plasma membrane.
During the last phase of the cell cycle, cytokinesis permits the cell to complete the process of isolating, making two cells with indistinguishable duplicates of DNA
The cell squeezes in the equator area with the assistance of a ring of contractile protein filaments. The formed cleavage furrow develops until the two cells squeeze off totally.
Thus, the correct answer is - end of cytokinesis.
Answer:
end of cytokinesis
Explanation:
I was wondering if anyone could help with this? The photo is posted below.
Answer:
B.
Explanation:
Think about it this way: if water flowed through a smaller pipe, there would be more resistance than if water flowed through a bigger pipe. Same concept applies to electricity.
Consider that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle. You can calculate the amount of time spent in each phase of the cell cycle form the percentage of cells in that stage.
Percentage of cells in stage X 1,440 minutes = ________ minutes of cell cycle spent in stage.
Answer: Hope this helps you :)
To calculate the time spent on each stage of the cell cycle, we need to know the total time required to complete the cycle and the percentage of cells that are in that stage. Then, take the product of both values.
--------------------
According to the statement,
The percentage of cells in a stage X 1,440 minutes = Time in minutes of cell cycle spent in the stage.
So, to know how much time is spent in each stage of the cell cycle, we need to know the time it takes for a cell to complete the whole cell cycle, and how many cells there are.
We already know that it takes, on average, 24 hours (or 1,440 minutes) for each onion root tip cell to complete the cell cycle.
Now, we should count the number of cells. Since I do not have a slide, I will assume that there are at least 50 cells, and from that 50 cells present in the slide, 25 are in the same stage. Let us say that the 25 cells are in the prophase.
So, considering a total number of 50 cells (100%), 25 cells equals 50% of the total.
Now, we know that
Time required to complete the cell cycle = 1440 minutesPercentage of cells in the prophase = 50%
Minutes spent in prophase = % of cells in prophase x 1440 minutes
Minutes spent in prophase = 50% x 1440 minutes
Minutes spent in prophase = 0.5 x 1440 minutes
Minutes spent in prophase = 720 minutes
According to this example, cells spend 720 minutes of their time in the prophase.
Now, I suggest you count how many cells do you have in your slide, and recognize how many are in each of the stages. Then you will be able to calculate the real-time spent per stage.
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Oocysts of Toxoplasma gondi are excreted in the feces of : 1.sheep 2.human 3. cat 4. all of above
Answer:
cat
Explanation:
They are excreted in the feces of the Felidae family, such as cats. The disease can be passed to humans and other animals, but in reference to ur question, cat is the answer.The chemicals that are released from the hypothalamus, the gonads, and the adrenal cortex are called ________, whereas the chemicals released by bioelectrical impulses throughout the brain are called ________. 1. synapses; hormones 2. neurotransmitters; synapses 3. inhibitory communicators; dendrites 4. hormones; neurotransmitters
Answer:
Option 4: hormones; neurotransmitters.
Explanation:
Hormones are the body's chemical messengers that are released from the hypothalamus, the gonads, and the adrenal cortex. They are released into the bloodstream where they are transported to target organs and tissue.
Neurotransmitters are chemicals released by neuron which stimulates other neurons, muscle cells and gonad cells allowing for the passage of impulse from one cell to another one.