name four types of pathogens that could cause infectious diseases?
Answer:
viruses, bacteria, fungi, protozoa, and worms.
Explanation:
how contractile vacuole function in osmoregulation
Answer: A contractile vacuole (CV) is an organelle, or sub-cellular structure, that is involved in osmoregulation and waste removal. ... In freshwater environments, the concentration of solutes inside the cell is higher than outside the cell. Under these conditions, water flows from the environment into the cell by osmosis. The contractile vacuole (CV) complex is an osmoregulatory organelle of free-living amoebae and protozoa, which controls the intracellular water balance by accumulating and expelling excess water out of the cell, allowing cells to survive under hypotonic stress as in pond water.
Explanation:
Molly wanted to test out new NikeSpeed running shoes that claim to make her run faster than her regular Nike shoes. If she wanted to test these shoes, what would be her:
Independent variable:
Dependent Variable:
TWO controlled variables:
Control Group:
Experimental Group
Answer:
Independent variable: type of shoe
Dependent Variable: running speed
TWO controlled variables: same running distance, same runner
Control Group: running with the regular Nike shoes
Experimental Group: running with the new Nikespeed shoes.
Explanation:
According to this question, Molly wants to test her new NikeSpeed running shoes that claim to make her run faster than her regular Nike shoes.
- Independent variable is the variable of an experiment that is subjected to change or manipulation by the experimenter. In this experiment, the independent variable is the SHOES that Molly wants to test.
- Dependent variable is the measured variable that responds to the change made to the independent variable. In this case, the dependent variable is the RUNNING SPEED.
- Control variable is the variable that must be kept unchanged throughout the experiment in order not to change the experiment outcome. The control variables include; SAME RUNNING DISTANCE, SAME RUNNER (MOLLY) etc.
- Control group is the group of an experiment that does not receive the experimental treatment. In this case, it is RUNNING WITH THE REGULAR NIKE SHOES.
- Experimental group is the group that receives the experimental treatment. In this case, it is RUNNING WITH THE NEW NIKE-SPEED SHOES.
what is the main point of the villi
Answer:
The villi of the small intestine project into the intestinal cavity, greatly increasing the surface area for food absorption and adding digestive secretions. The villi number about 10 to 40 per square millimetre (6,000 to 25,000 per square inch) of tissue.
A crop-dusting plane has to fly low and slow. It needs wings with a surface area ____________________the surface area of a jet wing.
a.
less than
c.
greater than
b.
equal to
Please select the best answer from the choices provided
A
B
C
What negative effect occurs when there is a decrease in air quality?
Answer:
d
Explanation:
Scientists can create transgenic organisms by inserting foreign DNA randomly into the chromosomes of a host. A scientist might do this in order to express genes carried in the foreign DNA and in this case the foreign DNA is often engineered to include insulator sequences at the ends of the foreign sequence. Why insulators would be useful in this context
Answer:
Insulator sequences serve as a boundary between two genes. In this case, the insulator sequence is a boundary between the organism's normal DNA and the inserted foreign DNA. The insulator will protect the inserted DNA from any regulatory effects that may come from the neighboring gene.
Name the major nitrogenous waste product in nile perch
Answer:
Any metabolic waste product that contains nitrogen. Urea and uric acid are the most common nitrogenous waste products in terrestrial animals; freshwater fish excrete ammonia and marine fish excrete both urea and trimethylamine oxide.
Dehydration synthesis is involved in the synthesis of all the following except
1. DNA
? proteins.
priysaccharides.
4. lipids:
5. monosaccharides.
Answer:
Please dont delete
Explanation:
Hello. I am sorry that I can not answer your question but I am doing this so I can get answers of my own. I appreciate your understanding and I hope you get your answer soon. Good luck!
Which of the following best describes why the two organisms you chose are closely related to each other using evidence from the chart?
The following case study is a paraphrase from "Good Clinical Practice. Standard Operating Procedures for Clinical Researchers" (Kolman, J., Meng, P. and Scott, G. editors; John Wiley and Sons publishers, 1998):
“While a study subject and a relative were walking in town one day during the summer, a hanging flower basket fell on a study subjects head, resulting in the study subject falling down and becoming unconscious. The subject’s relative called for an ambulance. On arrival at a local hospital’s Emergency Department, in which the subject regained consciousness but could not recall the event, a x-ray revealed a fractured skull. The subject’s consciousness level at this point was deteriorating and after further tests a subdural hematoma was diagnosed, which was evacuated under general anesthesia. Postoperative recovery was uneventful and progressing well until day four, when the patient developed acute dyspnea (shortness of breath) at rest during visiting time. An emergency lung scan was performed that confirmed a diagnosis of pulmonary embolism. The study subject was anticoagulated and was eventually discharged from the hospital”
1. What is/are the AE/s in the case study?
2. Are there any AEs that are "serious"? If "yes", list them and state why they are serious.
3. What are your thoughts about the AE(s) being related to the study drug (NOTE: we do not know whether the subject is on active drug or placebo)?
Which of the following identifies the only way to ensure a product is healthful?
Answer:
C. check the nutrition facts on the back
if it's wrong then it's D. buy the name brand instead of generic
Explanation:
QUESTION 9
Neurotransmitters are stored in
A. the synaptic cleft.
B. synaptic vesicles.
C. the postsynaptic neuron.
D. Nissl bodies.
E. smooth endoplasmic reticulum.
Answer:
B. synaptic vesicles
Explaination: online resources:)
Viroids’ largest impact is on ________.
Answer:
the agriculture indus
Correct answer: the agriculture indus
The diagram represents a taxonomic tree showing the possible evolution of six species of finches.
The most likely explanation for the branching pattern seen in the circled region labeled X is that:
A.
environmental changes resulted in extinction
B.
speciation occurred as a result of inbreeding
C.
no speciation occurred during this time
D.
environmental changes influenced speciation
Answer:
Option B
Explanation:
As we can see in the figure, three species of the finches in circle lie on the same main branch as three sub branches. This is an example of speciation caused by interbreeding of species which led to removal of deleterious genes and then caused emergence of three species adaptable to the existing environmental conditions.
Hence, option B is correct
Discribe the activities that lead to the birth of a child
Assume that gene A controls the conversion of a white pigment, P0 into another white pigment, P1 the dominant allele A specifies an enzyme necessary for this conversion, and the recessive allele a specifies a defective enzyme without biochemical function. Gene B controls the conversion of the white pigment, P1 into a pink pigment, P2 the dominant allele, B, produces the enzyme necessary for this conversion, and the recessive allele, b, produces a defective enzyme. The dominant allele, C, of the third gene specifies an enzyme that converts the pink pigment, P2 into a red pigment, P3 its recessive allele, c, produces an altered enzyme that cannot carry out this conversion. The dominant allele, D, of a fourth gene produces a polypeptide that completely inhibits the function of enzyme C; that is, it blocks the reaction P2-P3 Its recessive allele, d, produces a defective polypeptide that does not block this reaction. Assume that flower color is determined solely by these four genes and that they assort independently. In the F2 of a cross between plants of the genotype AA bb CC DD and plants of the genotype aa BB cc dd, what proportion of the plants will have (a) red flowers? (b) pink flowers? (c) white flowers?
Answer:
Red = 27/256Pink = 117/256White = 112/256Explanation:
Available data:
Four diallelic genes: A, B, C, DAA and Aa allows the conversion of P0 tp P1, while aa does notBB and Bb allows the conversion of P1 tp P2, while bb does notCC and Cc allows the conversion of P2 tp P3, while cc does notDD and Dd inhibit the action of allele C (P2 to P3), while dd does notThis is:
In the presence of the dominant alleles A, B, and C, the three might occur:
Po (white 0) ----> P1 (White 1) ----> P2 (Pink)----> P3 (Red)
A B C
In the presence of the recessive alleles a, b or c, the three reactions or some of them might not occur ( the X represents the inhibition of the reaction):
Po (white 0) --X--> P1 (White 1) --X--> P2 (Pink)--X--> P3 (Red)
a b c
In the presence of allele D, the last reaction is not possible, because D inhibits the action of C
P2 (Pink) --X-->P3 (Red)
C + D
So, in order to get Red flowers we must have the next genotype: A-B-C-dd (The three reactions can occur, and D must be absent)To get Pink flowers we must have the next genotypes: A-B-C-D- (D Inhibits C, hence it inhibits the third reaction) or A-B-ccD- or A-B-ccdd (cc does not allow the third reaction to happen, independently of the D gene presenceTo get White flowers we must have the next genotypes: aaB-C-D-,aabbC-D-, aaB-ccD-, aabbccD-, aabbccdd, aaB-C-dd, aaB-ccdd, aabbC-dd, A-bbC-D-, A-bbccD-, A-bbC-dd, A-bbccdd (aa must be present to get a white0 flower, or bb must be present to get a white1 flower)In the proposed problem, we have that the parental are AAbbCCDD and aaBBccdd, so we can tell that the whole F1 progeny will be heterozygous for the four genes, this is AaBbCcDd.
Knowing that these four genes assort independently, then we can infer that the F2 will have the next genotypic proportions for each gene:
AA + Aa=3/4aa= 1/4BB + bb= 3/4bb = 1/4CC + Cc = 3/4cc= 1/4DD + Dd =3/4dd= 1/4So, to get each of the mentioned genotypes for each trait, we must multiply their respective genotypic proportions, like this:
Red: A- x B- x C- x dd: 3/4 x 3/4 x 3/4 x 1/4 = 27/256Pink: A- x B- x C- x D-: 3/4 x 3/4 x 3/4 x 3/4 = 81/256A- x B- x cc x D-: 3/4 x 3/ x 1/4 x 3/4 = 27/256
A- x B- x cc x dd: 3/4 x 3/4 x 1/4 x 1/4= 9/256
By summing these proportions, we can get the proportion of all the pink flowers: 27/256 + 81/256 + 27/256 + 9/256= 117/256
White: To get the proportion of white flowers, you can repeat the same multiplications as before for each possible white genotype and then sum the results, as we did for pink flowers. Or you can extract from the total number of flowers (256), the amounts of red and pink flowers (27 and 117). This is: 256 - (27 + 117) = 112.Then 112/256 is the proportion of white flowers.
Please help I really need it pleaseeee
Answer:
Lizards and birds produce amniotic eggs.
Sharks were the first animals to have jaws.
Ray-finned fish and sharks are similar in that they both have paired appendages and jaws.
Birds are more closely related to crocodiles than they are mammals.
Explanation:
When a novel trait is labeled on a cladogram only the animals depicted after the label exhibit the trait.
Organisms that are located on the same clade (branch) are closely related.
Although Domain Bacteria is very diverse, bacteria do share some basic characteristics. Which of the following are some of those shared characteristics?
Question 4 options:
Bacteria are surrounded by a a strong cell wall made of a molecule called peptidoglycan.
Bacteria are eukaryotes.
Bacteria are prokaryotes.
Their DNA is one single, circular chromosome
Answer:
They Don't have definet nucleus (eukaryotes )
They have a SINGLE DNA,circular chromosome
Explanation:
All bacteria share common basic characteristics.
In order to perceive forms and patterns from incoming stimuli, individuals utilize____.
A. feature analysis
Group of answer choices.
A. feature analysis
B. change blindness
C. selective attention
D. inattentional blindness
Answer:
A. feature analysis
Explanation:
Stimulus can be defined as an obvious change in either the chemical or physical structure of an organism' environment (either external or internal). Thus, all living organisms (both animals and plants) respond to changes in their environment and consequently, an appropriate response or reaction is made. Also, stimulus arising from within the organism is known as internal stimulus while those from its environment are known as the external stimulus.
In organisms, the specialized cells that detect stimulus are generally known as sensory receptors while a group of these receptors is referred to as sense organ. Therefore, the senses are necessary for behavior because stimuli must be sensed in order to respond.
Stimulus control can be defined as a phenomenon that arises when a living organism responds or behaves in the presence of a stimulus and in another way in the absence of a stimulus.
For example, opening the door of a microwave oven as soon as its timer beeps.
Example II; When your body touches a hot object, you quickly move away and feel some pain subsequently.
In order to perceive forms and patterns from incoming stimuli, individuals utilize feature analysis of the signals from the environment.
Answer: A
Explanation: on edge 2021
Brainliest please
And thanks
girl j0in
fuy-nezb-ujd
Answer:
Hello
Explanation:
When water evaporates,
the particles
A stop moving
B. move faster
C. move slower.
D. explode.
Which situation is an example of altruistic behavior?(1 point)
A) A child steals an apple.
B) A child shares an apple.
C) A child eats an apple.
D) A child throws away an apple.
Answer:
B. A child share an apple
Explanation:
Im sorry if this is wrong
A child who shares an apple shows altruistic behavior.
What is altruistic behavior?
Evolutionary biologists determined that an animal's behaviors are altruistic when they benefit other individuals, even to the potential detriment of themselves. Bees, ants, and termites are examples of altruistic behavior.Thus, we can conclude that in option B a child who shares an apple shows altruistic behavior.
you can learn more about altruistic behavior here:
https://brainly.com/question/11287458
#SPJ2
which of the following is NOT a basic need of plants in order to live
a.water
b.oxygen
c.sunlight
d.carbon dioxide
just say a b c or d is the answer ill give brainlist and ten points
Storz (2007) describes an adaptive response to low partial pressure of oxygen in an environment at high elevation. Describe three other environmental conditions besides high elevation that might result in adaptation to hypoxia. List an organism found in each of the described environmental conditions that would be predicted to exhibit adaptive responses to low partial pressure of oxygen.
Answer:
Enhanced ventilatory abilities, enhanced percentage removal of O2 from the ventilatory stream and large gill surface areas.
Explanation:
Enhanced ventilatory abilities, enhanced percentage removal of O2 from the ventilatory stream and large gill surface areas are the three other environmental conditions besides high elevation that might result in adaptation to hypoxia. These abilities will increase the resistance to lower oxygen levels in the surrounding environment. Fish is the organism which used these types of adaptation for their survival in the surrounding of low oxygen levels.
Which is NOT part of the excretory system
A.Bladder
B.Kidneys
C.Urethra
D.Large intestine
Answer:
Large intestine
Explanation:
This is the urinary system, therefore the intestines have nothing to do with it.
NO LINKS Roundworms use the_____ route to move between two dogs.
Answer:
Feces is your answer. AKA poop.
Explanation:
The ligand binding domain of a protein must be inserted in
Lunar Eclipse. Choose ALL that apply
Lesson 3.07
Question 18 options:
Earth is directly between the moon and sun
Light from the sun is blocked
Earth casts its shadow on the moon
The moon turns dark
Answer:
All options are correct
Explanation:
In Lunar eclipse, Earth comes in between the sun and moon. Due to this, the sun light falls on the earth and its shadow is created that prevent the moon from shining.
In other way earth block the sun light reaching moon by coming in between the sun and moon.
Hence, All the options are correct
1. A food chain is one part of a food web. Which list is part of the food web shown above?
A diatoms-fish-leopard-seal-orca
B diatomskrill--fish-great white
shark-orca
C copepodsdiatomskrill--fish-
leopard-seal-orca
Dorca--leopard-seal--squid-copepods- diatoms
Help pls will get brainliest