Which of the following describes a negative feedback loop?
A. When the heart rate is too high, the body releases hormones that continually increase the heart rate higher.
B. When a pregnant woman is in labor, the body releases hormones that increase the intensity of contractions, which then increases the secretion of the same hormones.
C. When blood sugar concentration is above normal, the endocrine system releases hormones that lower the blood sugar concentration until it reaches a normal level, and the release of the hormones slows.
D. When a person is jogging, the body releases hormones that continually decrease the rate of oxygen supply to the legs.

Answers

Answer 1
i believe the answer is b
Answer 2

ANSWER is A

When blood sugar concentration is too low, the endocrine system secretes hormones that increase blood sugar concentration to a normal level.

Explanation:


Related Questions

What variable is being measured in response to the experiment?
A. Length of Time plants are exposed to Sunlight per Day
B. Amount of Water Given per Day
C .Average Growth of Poppies per Day
D. Amount of Fertilizer Given per Day

Answers

Answer:

c growth because your measuring the plant which is dependent variable

consider this group of rocks granite marble and gneiss what property was used to group these rocks

Answers

Answer: The answer is Grain.

Explanation:

The four minerals that make up granite are feldspar, quartz, mica, and hornblende. Marble is a beautiful rock that is used by humans as building material and for decorative uses ... Rocks are classified into these groups by the way they were formed. ... Luster is a property of a mineral that tells how the mineral reflects light.

Answer:

The answer is Grain.  

Explanation:  

The four minerals that make up granite are feldspar, quartz, mica, and hornblende. Marble is a beautiful rock that is used by humans as building material and for decorative uses ... Rocks are classified into these groups by the way they were formed. ... Luster is a property of a mineral that tells how the mineral reflects light.

i got it right on edge 2021

Which of the following accurately describes plasma?

a. It includes all the blood except the red blood cells.
b. It makes up 30% of whole blood.
c. It is the liquid portion of blood that includes the clotting factors.
d. It is the liquid portion of blood including the formed elements.
e. It contains the blood antigens that determine blood type.

Answers

Answer:

The correct answer is - option C.

Explanation:

Plasma is the liquid portion of the blood that carries water, salts, and enzymes in it and comprise almost 55% of the total blood volume. Other 45% of blood contains RBC, WBC, and platelets.

It is a yellow liquid that contains a clotting factor that helps in clotting blood if any injury occurs. Antigens are present on the RBCs not in the blood plasma that determines blood type.

A species of elm has winged-seeds. How would biologists explain how a species of elm with winged-seeds evolved from an ancestral elm species without winged-seeds

Answers

Answer:

In an ancestral elm species, mutations gave rise to the phenotypic trait "winged-seeds". Subsequently, selection favored elm plants with winged-seeds that diverged over time to become a separate species

Explanation:

A mutation is a genetic change in the DNA sequence. In general, mutations have a negative impact on the fitness of the individual (i.e., mutations are generally deleterious) and therefore they disappear from the population. However, there are situations where mutations are beneficial and confer an adaptive advantage, thereby increasing their frequency in the population. In this case, mutations associated with the formation of winged-seeds conferred an adaptive advantage (i.e., higher seed dispersal capacity) to individuals who had this phenotypic trait, thereby these individuals had more chances to reproduce and pass their genes to the next generation. Eventually, Elm plants with winged-seeds accumulated sufficient genetic differences to prevent interbreeding, leading to the formation of a separate species.

Artificial selection applies only to dog breeding?

True OR False.

Answers

Answer:

Domestication is the act of separating a small group of organisms (wolves, in this case) from the main population, and select for their desired traits through breeding. ... Dog breeding is a perfect example of how humans select for desirable or fashionable traits.

true...?

Explanation:

Answer:

False.

Explanation:

The bananas we have today were created using artificial selection. Same thing with peanuts by the way.

why it is important to understand this concept for the benefit of understanding other ideas in science/biology (1-2 sentences).​

Answers

Answer:

the objective is to help you know more about biology as a science, how biologist and other scientist do their work, personal traits that scientist find helpful in their work, and the benefits that people derived from biology and biotechnology specially in gaining new knowledge in understanding the concepts of science/biology.

Explanation:

I don't know what concept does the question asks because it wastn't stated but I answered anyway

The type of selection where traits in the middle range are favored is

Answers

Answer:

OK I can do it and tell u afterwords

someone please help me, I’ve done this like 10 times.

Answers

The 2nd goes to first 1st goes to second 3rd goes last 5th goes 3rd
It should be 5, 1, 2, 4, 3.

Hope this helps :)))

how is chromosomal number maintained during second meiotic division of the secondary spermatocyte​

Answers

At the end of the first meiosis division. Each secondary spermatocyte would contain a total of 23 chromosomes

Each secondary spermatocyte completes the second meiotic division without the replication of DNA.

Primary spermatocyte have 46 double structured chromosomes

Secondary spermatocyte has 23 double structured chromosomes

It doubles

DUE IN 10 MINUTES PLZ HELP

Explain how environmental changes affect the sickle cell trait over time in your population.

Answers

Answer:

your body will react

Explanation:

I have the Sickle cell trait....

uh anyways- ( HOPE THIS HELPS).

Provide at least 1 example of a mutation
that does not have a negative effect on
the individual.
PLEASE HELP ME

Answers

i honestly don’t know but i’m guessing maybe having more fingers or something

Complex food molecules that are consumed by organisms must be broken down in order to be used by cells to support growth or release energy.
True
False

Answers

Answer:True

Explanation:

The complex molecules are broken down by the digestive system. If the molecules were not to be broken down they would block the system

Answer:

TRue

Explanation:

What is the process of Sexual reproduction of a Hammerhead Shark?

Answers

Answer:

The process of sexual reproduction of a hammerhead shark is that the hammerhead sharks exhibit a viviparous mode of reproduction with females giving birth to live young.

Explanation:

Answer:

The hammerhead sharks exhibit a viviparous mode of reproduction with females giving birth to live young. Like other sharks, fertilization is internal, with the male transferring sperm to the female through one of two intromittent organs called claspers. The developing embryos are at first sustained by a yolk sac.

Explanation:

hope this helps

In a completely dark room, you can’t see your reflection in a mirror. Give reason.​

Answers

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An image is formed due to reflection of light by a plane mirror. In a completely dark room there is no light so no image will be formed by the mirror placed in the room. Hence we will not be able to see our image in a mirror placed in a completely dark room.

What two things are shown in this image that are created by an oceanic-continental convergent boundary ?

Answers

Answer:

jj see zj bxjdrbdvzb rhd

Which of the following is true about soil color? a. Soil vary in color based on their mineral content. b. Soils do not vary in color based on their minimal content. c. Soils consisting of only a few minerals are always darker. d. Soils is consisting of many different minerals are always darker.

Answers

Answer:

A

Explanation:

cant explain gtg

Answer:A

Explanation:


What are the functions of proteins in cells and viruses?​

Answers

A viral protein is both a component and a product of a virus. Viral proteins are grouped according to their functions, and groups of viral proteins include structural proteins, nonstructural proteins, regulatory proteins, and accessory proteins.[1] Viruses are non-living and do not have the means to reproduce on their own, instead depending on their host cell's resources in order to reproduce. Thus, viruses do not code for many of their own viral proteins, and instead use the host cell's machinery to produce the viral proteins they require for replication

once, more than once, or not once, more than once, or not at all.

This group of questions refers to molecules of the following substances.
(A) Cytochrome
(B) FADH
(C) NAD
(D) NADP
(E) Oxygen (02)

Answers

Answer:

a

Explanation:

Two molecules of ATP are generated for every one molecule of glucose in ... a cell needs more NADPH than it does ribose 5-phosphate. ... Practice: Which one of the following is NOT a potential fate of pyruvate ? a.

What are the reactants for photosynthesis?

Answers

Answer:

well the chloroplasts are the part of the cell that make photosynthesis happen

Answer:

light energy, water, carbon dioxide, and chlorophyll.

Explanation:

which of the following statements correctly describe meiosis

Answers

well i don’t know what you could pick bc the statements aren’t here i don’t think you added them but here is the detention of meiosis // a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores.

hope that helps
I don’t exactly see the statements, it seems you have forget to add them but if anything you could reply to this with the statements, then I hope I can help!:)

The stage of spinal shock that follows spinal cord injury is characterized by a. absent spinal reflexes below the level of injury. b. autonomic dysreflexia. c. motor spasticity and hyperreflexia below the level of injury. d. reflex urination and defecation.

Answers

Answer:

The correct answer is  a. absent spinal reflexes below the level of injury.

Explanation:

Spinal shock strictly refers to the neurological condition that occurs immediately after a spinal cord injury, in which the loss of not only motor and sensory functions occurs, but also the abolition of all reflexes below the injury (reflexes of muscular or myotatic stretching and cutaneous reflexes). There is also flaccidity, loss of reflexes. It is characterized by hypotension associated with cervical or upper thoracic spinal injuries. This characteristic shock results from the lesion of the descending sympathetic pathway in the spinal cord, producing a loss of vasomotor tone and sympathetic innervation of the heart. This causes vasodilation of the affected area with accumulation of blood and a decrease in venous return to the heart as well as cardiac output.

Write a concise essay on animal-like Protista and pay attention to their classification and their effects on human and their domestic animals and suggest some methods

Answers

Answer:

Animal-like Protists belongs to Kingdom Protista.

Explanation:

Animal-like Protists are those unicellular organisms which have animal characteristics like movement and heterotroph. They are not classified in the kingdom Animalia due to some characteristics such as made up of one cell. Animal-like Protists has a great effect on human and their domestic animals because they cause disease in them. Some animal-like Protists are also act as a decomposer means feed on dead bodies of human and animals and clean our environment so animal-like Protists cause an important effect on both human and animals.

Select the correct answer.
The graph shows the percentage of dog breeds affected by elbow dysplasia, which causes dogs to limp. What’s the most likely explanation for the mixed breed’s disease incidence?

A. It has low diversity in its genes.
B. It has high diversity in its genes.
C. It’s good at saving human lives.
D. It doesn’t suffer attacks from wild predators.
E. It lives comfortably with people.

Answers

Answer:

B would be the answer

Explanation:

Anaerobic bacterial fermentation occurs in the absence of:
Bacteria
Enzymes
Oxygen
All of the above

Answers

Answer:

Oxygen

Explanation:

Cellular respiration is a pivotal process that must be carried out by the cells of living organisms in order to obtain energy needed for their metabolic activities. This process of cellular respiration breaks down glucose either in the presence of OXYGEN (aerobic) or absence of OXYGEN (anaerobic).

Anaerobic respiration or fermentation is carried out by certain bacteria in the absence of OXYGEN to produce lactic acid as products.

What are the different layers that protect the brain and spinal cord? check all that apply

a. bone

b. cerebrospinal fluid

c. muscle

d. meningeal layers

Answers

Answer:

1. Bone 2. cerebrospinal fluid 4. meningeal layer

Explanation:

PLEASE HELP IM GIVING 50 POINTS FOR THIS!!!!!!!! ALSO BRAINLIEST
Plan a controlled experiment that uses the simulation to investigate how changing the mass of an object changes its acceleration. The net force on the object must stay the same. Record your plan here.

Answers

It is possible to measure how acceleration changes with mass by throwing objects with different mass from the same height and measuring the acceleration.

What are the important factors for the experiment?

This experiment requires you to measure how acceleration changes if the mass changes. This implies you need to consider the following factors:

Acceleration: This factor is the one you will measure in your experiment.

Mass: This factor is the one you will need to control, this implies using objects from different masses and comparing if mas has any effect on acceleration.

Other: Net force, wind, etc. are other factors that need to be constant to prevent them affect the results.

Steps for the experiment:

Choose a specific heigh: One of the ways of measuring acceleration is to throw objects and determine the acceleration as they fall, so the first step will be to establish a height.

Throw different objects with different masses: You can begin with light objects and move into heavier objects.

Measure acceleration: Every time you throw an object, measure acceleration using the formula A = change in velocity/ time.

Learn more about acceleration in:

brainly.com/question/12134554

#SPJ1

Explain the Water Cycle ​

Answers

Answer:

PRECIPITATION

SURFACE RUNOFF

GROUNDWATER

EVAPORATION AND TRANPIRITATION FROM TREES

REPEAT

Explanation:

Answer/Explanation:

The water cycle shows the continuous movement of water within the Earth and atmosphere. Liquid water evaporates into water vapor, condenses to form clouds, and precipitates back to earth in the form of rain and snow. Water in different phases moves through the atmosphere (transportation).

There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection. Let's look at each of these stages. Evaporation: This is when warmth from the sun causes water from oceans, lakes, streams, ice and soils to rise into the air and turn into water vapour (gas).

Hence it is quite important to understand and learn the processes of the water cycle.

Step 1: Evaporation. The water cycle starts with evaporation. ...

Step 2: Condensation. ...

Step 3: Sublimation. ...

Step 4: Precipitation. ...

Step 5: Transpiration. ...

Step 6: Runoff. ...

Step 7: Infiltration.

It is also known as the hydrological cycle or the hydrologic cycle. During the process of the water cycle between the earth and the atmosphere, water changes into three states of matter – solid, liquid and gas. The diagram of the water cycle is useful for both Class 9 and 10.

Whats the answer giving brainliest HELP!!!!!

Answers

Answer:

I feel like the first one is the best

Explanation:

widening the roads will just cause more cars.

raising the price is most likely not gonna help but its an option.

expanding just means more cars

What are the three goals of integrated pest management (IPM)?
A) to reduce the use of insecticides, increase consumer costs, and
conserve water
B) to reduce the use of insecticides, increase farmer costs, and conserve
water
C)to reduce the use of artificial pesticides, reduce costs, and control pests
D) to reduce the use of artificial pesticides, reduce costs, and increase
salinization
Please select the best answer from the choices provided
Ο Α
B

Answers

The correct answer is C. To reduce the use of artificial pesticides, reduce costs, and control pests.

Explanation

Integrated pest management (IPM) is a method that integrates different practices and scientific principles to make adequate management with pests. This method considers knowledge about the habits, life cycle, needs, and aversions of the pest, reducing the use of toxic methods and implementing less toxic methods, monitoring pest activity and adjusting methods over time, tolerating harmless pests, setting a threshold to decide when it is time to act, among others as its main principles. Therefore, the correct answer is C. To reduce the use of artificial pesticides, reduce costs, and control pests.

please help with this question​

Answers

Answer:

a -5

d -2

c-3

b-4

e - 5

Explanation:

I'm guessing this is the answer

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