Chapter 1
1. Which of the following is an example of homeostasis?
a. regulation of blood CO2 level
b. regulation of blood glucose level
c. regulation of body temperature
d. all of the above
2. Which statement is a correct description of negative feedback control system?
a. It is stimulatory
b. It is inhibitory
c. It amplifies the change that is occurring
3. Positive feedback control system:
a. Are stimulatory
b. Tend to produce destabilizing effects and disrupt homeostasis
c. Produce an action that is opposite to the change that activate the same system
d. Both "a" and "b" are correct
4. The lungs are ____________ to the liver:
a. distal
b. lateral
c. inferior
d. superior
5. The heart is ___________ to the lungs:
a. superior
b. dorsal
c. medial
d. lateral
6. A vertical plane through the body dividing it into right and left is termed:
a. sagittal
b. lateral
c. transverse
d. frontal
7. A patient sustains severe blunt trauma to the left upper abdomen and requires surgery. The body organ most likely to be involved is the ____________
a. appendix
b. gallbladder
c. spleen
d. urinary bladder
8. Cytology is the study of:
a. tissues
b. organisms
c. cells
d. all of these are correct
9. A term that means nearer the attached end of a limb is:
a. medial
b. lateral
c. distal
d. proximal
10. Coronal plane:
a. Divides the body into anterior and posterior portions
b. Divides the body into upper and lower portions
c. Divides the body into left and right portions
d. Is also called horizontal plane
Answer:
homeostasis regulate body glucose
The reason that the nailbed appears pink is the president of a large number of Melanocytes n the underlying dermis
Answer:
paki sagot po ito hahahaha
The development of vascular tissues helped plants become more successful
on land by
A. enabling gametes to live longer without a water supply
B. making the conversion of sunlight to sugar possible
C. causing them to become sporophytes
D. allowing water to move throughout a plant within its body
Can y’all please assist me.
What is the value of y in the equation 5x + 2y = 20, when x = 0.3? 0 2.5 2.8 O 9.25 O 10.75
Answer:
O 9.25
Explanation:
The following mathematical equation is given in this question:
5x + 2y = 20
Using this equation, we're asked to find the value of y when x = 0.3. Hence, we substitute 0.3 for x in the equation as follows:
5x + 2y = 20
5 (0.3) + 2y = 20
1.5 + 2y = 20
Collect like terms
2y = 20 - 1.5
2y = 18.5
Divide both sides by 2
y = 18.5/2
y = 9.25
Therefore, y = 9.25 when x = 0.3
account for movement in metazoan
Answer:
They are able to move water through their bodies through the coordinated beating of flagellated cells that line their pores.
Explanation:
Select all the correct answers.
Which three statements provide reasons that scientists are considering renewable sources of energy?
1. Most renewable resources are clean and nonpolluting.
2. Renewable resources can be replenished.
3. Renewable resources are conventional resources.
4. Most renewable resources are easily available in nature.
5. All renewable resources are cost effective.
The three statement related to the renewable sources of energy should be clean & non-pollutting, conventional resources, and available in nature.
What is renewable sources of energy?It is the energy that should be collected from the renewable resources that should be replenished on the timescale based on the human.
It involved the sources like the sunlight, wind, rain, etc.
Therefore, based on this, we can conclude that the option 1, option 3, and option 4 is correct.
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The rate at which the concentration of a drug in the bloodstream decreases is proportional to the concentration at any time t. Initially, the concentration of the drug in the bloodstream is C0 g/mL. What is the concentration of the drug in the bloodstream any time t
Answer:
[tex]C(t) = C_oe^{-kt}[/tex]
Explanation:
From the given information:
At any given time (t), let c(t) represent the concentration of the drug present in bloodstream.
Deriving the equation:
[tex]\dfrac{dC}{dt}[/tex] decrease proportionally to Concentration C
i.e
[tex]\dfrac{dc}{dt} \alpha - C[/tex]
[tex]\dfrac{dc}{dt} = -k C[/tex]
[tex]\dfrac{dc}{c} = -k dt[/tex]
[tex]\int \dfrac{dc}{c} = -k \int dt[/tex]
㏑(C) = -kt + λ
where,
λ is the integration constant.
Integrating at t = 0, concentration of blood = Co g/mL
C(0) = Co
㏑(C₀) = 0 + λ
λ = ㏑(C₀)
From ㏑(C) = -kt + λ
㏑(C) = -kt + ㏑C₀
㏑(C) - ㏑C₀ = -kt
[tex]\dfrac{C}{C_o} = e^{-kt}[/tex]
[tex]C(t) = C_oe^{-kt}[/tex]
∴
The concentration of drug in blood at any time t is:
[tex]C(t) = C_oe^{-kt}[/tex]
What does a chromosome consist of?
A. Tightly wound DNA only.
B. Loosely dispersed DNA and proteins.
C. Tightly wound DNA and proteins.
D. Loosely dispersed DNA.
Answer:
C
Explanation:
So, there are 2 different forms that DNA can be found in.
The more common form, where the DNA is loosly scattered.
There is a less common form, however, only found during cell division, which is a compacted form. The DNA is tighly wound in this case.
In the case of chromosomes, DNA is tightly pakced, and not loose.
Now, do they are do they not have protiens?
Well, heres another question, how does the DNA get compacted?
It has to wrap around histone protiens.
The logn strands of DNA wrap around many histone protiens, until the full length of DNA has been compacted.
So to answer the question, yes, there are protiens found in chromosomes(specificly histone).
This means the answer must be C, since chrosomes are both tightly bound, and contain protein.
in a paragraph explain what effect very small pores and their diffusion rate would have on the workings and mechanism of a cell
Answer:
So if the size of the pore is small then the rate of the diffusion will be very slow as the molecules will move from high concentration to low concentration in very slow rate.
Explanation:
I hope it helps you
PLEASE HELP THIS IS DUE NOW
will mark brainliest!
10 points
Answer: B, D
Explanation: BrainEList me
Which of the following is not true regarding the establishment of a neuron's resting membrane potential?
a. Resting membrane permeability to Na+ is very low.
b. Ion pumps in the plasma membrane eject sodium ions as fast as they cross the membrane.
c. Electrical forces do not push sodium ions into the cell.
d. Chemical and electrical forces both favor sodium ions entering the cell.
e. The chemical gradient for potassium ions tends to drive them out of the cell.
Answer:
c
Explanation:
Body systems work alone to keep the body in a state of homeostasis
True or false
Answer:
False, the body systems have to work together to maintain homeostasis
Hope this helps!
HELP! I CANT FIND THIS IN TEH INTERNET!
Answer:
Met-Ser-Lys-Val-Phe
so none of the above
Explanation:
Answer:
Ah ok. Sorry this is due to what its called, not what it is.
Explanation:
This is a table of the MRNA that is transcribed to make protiens.
The UCAG found on the graph are the different RNA bases.
A single base codes for a single part of a protien.
A codon is made up of 3 base pairs. A single codon codes for a protien.
So lets look at the first 3 bases - AUG
This looks like MET
So, let me show you how I found this:
The first base pair is A, looking at the left 4 letters, we see is the third row down.
The second base pair is U, looking at the top, we see is this first row.
Now we know its the third row down, and the first one to the left.
So now we have 4 possible protiens.
To find the exact one, use the third base pair, which is G. This is the bottom of the mini row found in the right side.
Doing this, we find that MET is the protien.
To be honest I dislike this table, so I will be using the one attached below.
Anyway, this MET protient removed option B.
Next we have Codon CUC
Looking at my graph below, I see that CUC codes for LEU.
This removes ooptions A and D, leaving C.
But now we need to check wether it is C or none of the above.
Again, I take codon AAG, and find lys. This is in anser C.
I take codon UGC, and find cys. This is in answer c.
Finally, I take codon UUC, and find PHe. This is answer c.
So C is your answer.
Hope this makes sense and helps!
I personally find my graph easier to use, and fi you agree, then I suggest you use it!
Which lists the correct order of evolutionary history?
crabs, jellyfish, reptiles
mammals, amphibians, crabs
vertebrate fish, crabs, mammals
jellyfish, reptiles, mammals
Answer:
jellyfish, reptiles, mammals
Explanation:
I took a test on edg in 2021
The lists in the correct order of evolutionary history is jellyfish, reptiles, mammals.
What is Evolution?
This is the process which involves the modification of structures in
organisms as a result of natural selection thereby making them more fit in
the environment.
The jellyfish has less complex and specialized and mammals has the most
which is why option D is the most appropriate.
Read more bout Evolution here https://brainly.com/question/1144962
What would you say to a friend that says "GMOs are dangerous to human health"?
Everything have both positive and negative impacts
Gmos( genetically modified organisms ) are good and dangerous both
if we carefully practice genetic engineering then it is beneficial but if we use it only for our income source without caring about its worst effects then its very dangerous
In a changing environment, which of the following would be beneficial for the survival of a species?
O offspring with a variety of phenotypes
O offspring with little variation in phenotype
O offspring that closely resemble their parents
O offspring that are adapted to a specific environment
The last one
Explanation:
Offspring that are adapted to a specific environment is the beneficial for the survival of a species.
What is species?A species is an organism's fundamental unit of classification, taxonomic rank, and biodiversity. The biggest group of organisms in which any two individuals of the right sexes or mating types can conceive a fertile offspring, usually by sexual reproduction, is referred to as a species.
A species can also be identified by its karyotype, DNA sequence, anatomy, behavior, or ecological niche. In addition, since fossil reproduction cannot be studied, paleontologists use the chronospecies idea.
There are between 8 and 8.7 million different species of eukaryotes, according to the most recent accurate estimate.
All species are given a two-part name, or "binomial," with the exception of viruses.
Therefore, Offspring that are adapted to a specific environment is the beneficial for the survival of a species.
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Why must living organisms reproduce?
Answer:
reproduction it's important for the survival of all living organisms
Answer:
Reproduction is necessary for the continuation of the generation of particular species rather than the species extinct from the earth. It is also a source of recombination.
Explanation:
Explain how in glycolysis that the spitting of one gluclose molecule results in 4 ATP but there is only a net gain of 2 ATP
The_____
is like the ______
system of
the human body because they both_________.
Answer:
The cell wall is like the integumentary system of the human body because they both protect the interior from the external environment.
Explanation:
1. Compare a positive feedback loop and negative feedback loop for homeostasis. Body temperature is an example of a negative feedback loop. Imagine that body temperature was regulated as a positive feedback loop and explain what would happen.
2. Look at the figure of the brain lobes in your textbook. Do you think the chimpanzee would have the same brain lobes as that of a human? How might the chimp brain differ from a humans? Keep in mind the chimpanzee is the humans’ closest relative.
Answer:
Homeostasis typically involves negative feedback loops that counteract changes of various properties from their target values, known as set points. In contrast to negative feedback loops, positive feedback loops amplify their initiating stimuli, in other words, they move the system away from its starting state.
Explanation:
Chimpanzee lobes may be smaller than human lobes
HELPPPPPP PLEASEEEEE ILL GIVE BRAINLIEST AND POINTS!!!!
(you dont need to answer them all but at least help me with a couple)
1) Explain Uganda’s ABC program in the fight against HIV/AIDS
2) Why has the Ugandan government pushed Abstinence as a means of combating the spread of HIV/AIDS?
3) What risks are involved with the use of condoms in combating the spread of HIV/AIDS?
4) On a separate piece of paper, construct a population pyramid to illustrate the current age groups infected by HIV/AIDS in Uganda.
Answer:
1. Abstain, Be faithful, or, as a last resort, use a Condom. Within a few years, Uganda had developed what researchers call a "social vaccine" against HIV: cultural norms about sexual responsibility, preached in clinics and public schools, as well as churches and mosques.
3.When used correctly every time you have sex, condoms are the best way to prevent sexually transmitted infections such as HIV. They have a very low failure rate and are effective for all forms of sex.
Which of the following are examples of natural pollution? Choose all that apply.
car exhaust
volcanoes
pesticides
trash
forest fires
floods
The examples of natural pollution are Volcanoes, Forest fires, and floods.
What do you mean by Pollution?Pollution may be defined as the presence of any unwanted or contaminated substances in the atmosphere.
Car exhaust, pesticides, and trash are examples of artificial pollution.
Volcanoes release certain poisonous gases which are harmful to environment. Flood carries contamination like pesticides, chemicals, sewage waste, etc.
Forests fire are responsible for the increase of carbon dioxide in the environment.
Therefore, examples of natural pollution are Volcanoes, Forest fires, and floods.
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Which is the word equation for photosynthesis?
Answer:
carbon dioxide + water + sunlight + chlorophyll → glucose + oxygen
Explanation:
I hope this helps in any way :)
A biochemist analyzes the DNA of an organism and determines that it is composed of 28% adenine nucleotides. Using this information, determine the amount of guanine nucleotides in this organism's DNA.
A.
28%
B.
32%
C.
22%
D.
44%
E.
There is not enough information provided to answer this question.
Answer:
C. 22
Explanation:
I just studied this last week
c: i just answered it and got it right
Answer:
good for you lol
Explanation:
Es el nombre que se le da a un cuerpo celeste dentro de su trayectoria
aaaaaaaaaaaaaa
Name this tube like cavity? I think it’s the Esophagus.
Answer:
esophagus
Explanation:
your answer is right
Answer:
esophagus,
Explanation:
You are correct in your original answer.
Fat cells are expandable. How does this structure relate to a fat cell's function?
A) Fat cells store energy for the body to use later, so being
expandable would help with storage.
B) Fat cells burn energy quickly when other food source is available, so being expandable would help with the rapid burn.
C) Fall cells protect organs, so being expandable can help with cushioning.
D) Fat cells do not expand
Fat cells burn energy quickly when other food source is available, so being expandable would help with the rapid burn.
The relationship between the expandability of fat cells and a fat cell's function is ; ( A ) Fat cells store energy for the body to use later, so being expandable would help with storage.
Fat cells specialized for the storage of energy in human body is the Adipose tissue which can expand between 60 to 70% of the weight of the human body in response to changes in the energy balance of the body.
Adipose tissues store energy in form of triglycerides and in order to store more energy for later use the Adipose would need to be expandable to accommodate the required amount of energy.
Hence we can conclude that the relationship between the expandability of fat cells and a fat cells' function is Fat cells store energy for the body to use later, so being expandable would help with storage.
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do roots have guard cells and therefore stomata?
Answer:
Explanation:
Besides, plastids of the root guard cells (GCs) do not differentiate into chloroplasts but function solely as amyloplasts. Root stomata have a short life span. During rapid and intense root growth, GCs cannot keep pace with the elongation of their neighbouring rhizodermal cells
What effect can groundwater have on land?
A.) Increase in ground altitude
B.) Formation if sinkholes
C.) Decrease in oil salinity
D.) Formation of wetlands
Edited response:
B) Formation of sinkholes
Explanation:
"Groundwater pumping for urban water supply and for irrigation can produce new sinkholes in sinkhole-prone areas"