Answer:
The correct answer is ''C. Renin-angiotensin system activation causes decreased glomerular filtration rate and fluid retention, which results in increased preload.''
Explanation:
In states of low cardiac output, the renin-angiotensin-aldosterone pathway is activated as a compensatory mechanism, whose objective is to fundamentally modify the peripheral circulation, which operates in conjunction with the activation of the medullary neuro-adrenal system, to maintain blood pressure. These two mechanisms, which are totally different, are closely linked; thus, stimulation of beta-1 adrenoreceptors in the juxtaglomerular apparatus, as a consequence of a high adrenergic output, causes renin output in heart failure. On the other hand, the activation of baroreceptors in the renal vascular bed caused by a reduction in renal blood flow, is also responsible for the release of renin, it occurs in patients with severe heart failure managed with diuretics and salt restriction.
1. Which of the following most accurately complete the statement below -
An increase in biodiversity result in
A. More competition for abiotic factors
B. Less competition for biotic factors
C. An increase in the sustainability of an ecosystem
D. A decrease in the sustainability of an ecosystem
Answer:
The correct answer is - C. An increase in the sustainability of an ecosystem.
Explanation:
Biodiversity is the variety of different biological species and populations on the earth or in an ecosystem. Biodiversity helps in maintaining health by providing food and other resources. Higher biodiversity healthier the earth.
Sustainability is the ability to maintain the ecological process and its structure and function in case of external stress for a longer time. The more sustainability of an ecosystem the healthier the ecosystem. The biodiversity of an ecosystem provides sustainability to the ecosystem. An increase in biodiversity will lead to a more sustainable ecosystem.
Human blood type is determined by three alleles IA, IB, and IO. The alleles IA and IB are co-dominant to each other, and both are dominant to IO. Within a large, randomly mating population (540,000 individuals), the frequencies for the blood type alleles are 0.3 for the IA allele, 0.6 for the IO allele, and 0.1 for the IB allele. Calculate the expected numbers of people in the population having the blood type of A.
Answer:
1a. Number of people in the population with blood group A = 243000
1b. Number of people in the population with blood group B = 70,200
1c. Number of people in the population with blood group AB = 32,400
1d. Number of people in the population with blood group O = 194000
2. The percentage of type B people that are heterozygotes (IBIO) = 12%
Note: The question is incomplete. The complete question is given below:
Human blood type is determined by three alleles IA, IB, and IO. The alleles IA and IB are co-dominant to each other, and both ar e dominant to IO. Within a large, randomly mating population (540,000 individuals), the frequencies for the blood type alleles are 0.3 for the IA allele, 0.6 for IO, and 0.1 for the IB allele. a. Calculate the expected numbers of people in the population having each blood type A, B, AB, and O. b. 2. Determine the percentage of type B people that are heterozygotes (IBIO).
Explanation:
According to Hardy-Weinberg equilibrium equation, p²+q²+2pq=1
Where heterozygote allele 2pq,
p² = dominant h0m0zygous frequency
2pq = heterozygous frequency
q² = recessive h0m0zygous frequency
1a. Blood group A has two genotypes- IAIA and IAIO
The genotype frequency will be:
IAIA= 0.3 X 0.3 = 0.09
IAIO= 2 × 0.3 x 0.6 = 0.36
Total genotype frequency = 0.09 + 0.36 = 0.45
Number of people in the population with blood group A = 0.45 × 540,000 = 243000
b. Blood group has two genotypes- IAIB and IBIO
The genotype frequency will be:
IBIB= 0.1 x 0.1 = 0.01
IBIO = 2 × 0.1 x 0.6 = 0.12
Total genotype frequncy = 0.13
Number of people in the population with blood group B = 0.13 × 540,000 = 70,200
c. Blood group AB genotype frequency is 2 × IAIB x IAIB
Blood group AB = 2 × 0.3 x 0.1 = 0.06
Number of people in the population with blood group AB = 0.06 × 540,000 = 32,400
d. Blood group O has one genotype IOIO
IOIO = 0.6 × 0.6 = 0.36
Number of people in the population with blood group O = 0.36 × 540000 = 194000
2. Genotype frequency of heterozygote IBIO blood group = 2 × IB × IO
2 × 0.1 x 0.6 = 0.12 = 12%
The percentage of type B people that are heterozygotes (IBIO) = 12%
What two body systems are most useful in getting nutrients from the food you eat to the cells in your body to assist in growth and development
A. Digestive and Nervous
B.circulatory and respiratory
C. Muscular and digestive
D. Digestive and Circulatory
Explanation:
(D.Digestive and Cilculatory are most useful in getting nutrients from the food we/you eat to the cells in your/my body to assist in growth and development....HOPE THIS HELP....TYwhat is basement membrane? and what is it made up of ? in detail plss help
PLEASE HELP‼️ this is due in 5 mins.
A segment of DNA strand has the following bases:
TAC GAT
What is the complementary strand of mRNA?
A: UAG CAU
B: TAG CAT
C: ATG CTA
D: AUG CUA
Answer:
sorry if im lateeee. but its D!
Explanation:
QUESTION 4
When the 'wind is knocked out of you", that air that was knocked out of you was actually part of your
O IRV
O ERV
ORV
O TV
Which picture shown in figure b-3 is the most likely outcome
Answer:
The picture D is the outcome
17. A terrane becomes part of a continent in a process called
a. rifting.
c. slab pull.
b. converging.
d. accretion.
can somebody please help me? :)
When the cells start multiplying at an abnormal rate it leads to complications in our body.What could be the reason for this?Find Out
Answer:
the reason is often cancer.
Explanation:
cancer cells multiply rapidly and cause tumors
name the process through which energy is Incorporated in the ecosystem?
Answer:
photosynthesis
Energy enters the ecosystem via sunlight as solar energy. Primary producers (a.k.a., the first trophic level) turn that solar energy into chemical energy via photosynthesis. Common examples are land plants, photosynthetic bacteria and algae
why the solute can't move from higher concentration to lower concentration?
Answer:
yes, so when the concentration of a solute is high, the concentration of water is lowered since there is more solute per water, less water per solute. Thus, when water moves from low concentrations of solute to high concentrations of solute, it moves from high concentrations of water to low concentrations of water.
Explanation:
(06.04 LC)
Fertilization usually occurs in the (3 points)
A. End of the Fallopian tubes B. Vagina
C. Ovaries
D. Uterus
Answer:
A
Explanation:
Three reasons why food self sufficiency Is
important ?
Answer:
FSS has become increasingly important to the political agenda in several countries, especially after the high volatility of food prices between 2007 and 2008 crisis [29-33]. Countries considered self-sufficient at the national level may have a percentage of their population with problems of hunger and malnutrition.
Explanation:
Please help i am giving brainliest
What is homeostasis?
A. the ability of an organism to maintain a relatively stable internal environment.
B. the production of a hormone by an endocrine gland that works on another endocrine gland
C. a series of events that monitor how hormones work in the body
D. a process in which a change in the environment causes a response that returns conditions
to their original status
No dam links
Answer:
A
Explanation:
Homeostasis is basically the organism being able to live without need of an outside source
Answer:
ok i answered the last one and yess i got it
What is homeostasis and how is it maintained?
Homeostasis refers to the body's ability to maintain a stable internal environment (regulating hormones, body temp., water balance, ect.). Maintaining homeostasis requires that the body continuously monitors its internal conditions.
Explanation:
hope it helps
In the Diffusion Through a Membrane lab, the model cell membranes
allowed certain substances to pass through based on which characteristic
of the diffusing substance?
O (1) size
O (2) shape
O (3) color
O (4) temperature
Answer:
4
Explanation:
Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion. Lower temperatures decrease the energy of the molecules, thus decreasing the rate of diffusion
Which of the following sources of noise pollution has the greatest likelihood of leading to hearing loss
for exposed individuals in an urban area?
Your answer:
car horns
conversation
pneumatic drills
trains passing by
O traffic on a residential street
Answer:
traffic on a residential street
4
Select all the correct answers.
Which three human activities lead to a loss of terrestrial habitat?
conservation
farming
deforestation
construction
Reset
Next
Answer:
farming, deforestation, and construction
Explanation:
all of these options except conservation lead to poor environmental health. it's not conservation because to conserve means you are not wasteful and you conserve your resources.
Answer:
Farming, deforestation and construction all lead to the loss of terrestrial habitat. Conservation would be protecting terrestrial habitat.
Explanation:
in engineering design which is a limit to what can be done
1. scope
2. criteria
3. process
4. constraints
Answer:4.constraints
Explanation:
Jill is planting a garden in her yard and notices that the fertilizer she is using contains gypsum. She learns that gypsum is a rock that is mined from underground and used to make fertilizer and other products. She remembers from science class that gypsum is rated a 2 on Moh’s hardness scale. Which of these describes this rock? Choose the two statements that apply.
A. It cannot scratch any other rocks.
B. It can scratch rocks that are rated a 1.
C. It is very soft compared to other rocks.
D. It is very hard compared to other rocks.
E. It can scratch any rock rated from a 2 to a 10, but not a 1.
Answer:
B and C
Explanation:
It can scratch rocks rated a 1 but not above a 2, the scale goes to 10 so it is very soft compared to other rocks.
Which of the following are shown in karyotypes?
a
sex chromosomes
b
homologous chromosomes
c
autosomes
d
all of the above
Answer:
Karyotypes describe the chromosome count of an organism and what these chromosomes look like under a light microscope. Attention is paid to their length, the position of the centromeres, banding pattern, any differences between the sex chromosomes, and any other physical characteristics.
Explanation:
As this karyotype displays, a diploid human cell contains 22 pairs of homologous chromosomes and 2 sex chromosomes. ... The maternal and paternal chromosomes in a homologous pair have the same genes at the same locus, but possibly different alleles.
Determine the conditions when a long tail would be an adaptation
Minerals in sediment may seep into the ______________ and replace the body’s material with minerals that harden over time.
Answer:
erm
Explanation:
digestive system.
no idea
AG CLASS NEED HELP ASAP
Which of the following refers to a plant that has been pruned and trimmed into a sculptural form?
topiary
hardscape
folly
bosquet
Answer:
I believe the ans is topiary.
Answer:
My Answer Is;
TopiaryTopiary is the horticultural practice of training perennial plants by clipping the foliage and twigs of trees, shrubs and subshrubs to develop and maintain clearly defined shapes, whether geometric or fanciful. The term also refers to plants which have been shaped in this way.
Explanation:
#CARRYONLEARNINGWhich nerves are the hair cells in contact with?
Answer:
Auditory nerve
Explanation:
Hair cells form synapses with bipolar neurons whose axons form the auditory nerve. Tips of the outer hair cells are attached directly to the tectorial membrane. When the inner hair cells move they make contact with the overhanging tectorial membrane
Fun fact: Hair and nials are made out of the same things!
Which of the following is a function of the nucleus?
stores DNA
builds protein
stores sugars
packages proteins
Answer:
Stores DNA
Explanation:
Regulates activities in the cell and carries heredity information which is contained by genes and structures.
Which of the following is *true* of the placenta? Question 18 options: 1) It fully develops six months after birth. 2) It forms during the seventh month of prenatal development. 3) It is the fluid-filled sac that houses the developing embryo and fetus. 4) It allows the exchange of nutrients between the embryo and the mother, while at the same time filtering out harmful material.
Answer:
4) It allows the exchange of nutrients between the embryo and the mother, while at the same time filtering out harmful material.
Explanation:
The placenta is an organ present in all mammals. She is confirmed between the 6th and 8th week of pregnancy and has as main function the exchange of substances between the mother and the fetus. Among these substances are nutrients, gases and even secretions. The placenta also has the function of fighting infections and promoting immunity to the fetus, in addition, it can act as the lung, the intestine and the liver, while the fetus does not develop its organs.
The sequence of mRNA is AGUACA. Which of these is the sequence of
tRNA? *
UCAUGU
AGTACA
AGUACA
TCATGT
Answer:
I think the answer is ucaugu
which statement describes the iterative step in the engineering design process
1. engineers should properly communicate their results
2. engineers run through the steps of the process multiple times
3. engineers always take cost of the design into consideration
4. engineers work as a team on most steps
Answer:
engineers alwaystake cost of design into consideration
8. Valves prevent blood from flowing backwards. Valves are located in the
O
veins
heart
heart and arteries
heart and veins
Answer:
Heart and artries
Explanation:
PLEASE MARK AS BRAINLIEST