Answer:
Answer is c and d
Explanation:
A negative feedback loop is a reaction that causes a decrease in function. Often, it causes the output of a system to be lessened; so, the feedback tends to stabilize the system. This can be referred to as homeostasis, as in biology, or equilibrium, as in mechanics.
What is baseline imbalance?This is simply known as a form of art that pertains to systematic error when producing an intervention groups in any clinical trial. In this type of imbalance, the groups differ in baseline traits due to the fact that the participants were selected or assigned.
There are different ways to balance a load. Why is the figure considered to be an example of a negative feedback system as opposed to a positive feedback system is that The figure shows the correction of an imbalance back to a baseline.
Therefore, A negative feedback loop is a reaction that causes a decrease in function. Often, it causes the output of a system to be lessened; so, the feedback tends to stabilize the system. This can be referred to as homeostasis, as in biology, or equilibrium, as in mechanics.
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1. Janica placed an ice cube in her thermos of hot coffee. Which of the following
describes the change to the energy in the system?
A. Energy was transferred from the coffee to the ice cube, but the total energy in the
system remained constant.
B. Energy was transferred from the ice cube to the coffee, but the total energy in the
system remained constant.
C. Energy was transferred from the ice cube to the coffee, and the total energy in the
system decreased.
D. Energy was transferred from the coffee to the ice cube, and the total energy in the
system increased.
Answer:
I think A
Explanation:
Which statement is the best decription of how blood circulates through the body?
A. The circulatory system pushes blood upward throughout the body
by using gravity
B. The heart contracts and relaxes causing a force to push the blood
throughout the body.
C. The respiratory system pulls the blood inward when inhaling and
pushes it outward when exhailing.
D. The blood circulates throughout the body by gravity only.
The blood circulates throughout the body because of the contraction and relaxation of the heart which pushes the blood throughout the body. So, the correct option is B.
What is the circulatory system?The circulatory system is a specialized system for the circulation of blood throughout the body. This blood is rich in nutrients obtained from the digestive system after digestion and oxygen obtained from the respiratory system after breathing.
The circulatory system is like an industrial pipeline system in which a pump or motor, pipes and the component flow through the pipes.
The blood vessels represent the pipes. There are two types of blood vessels, the arteries and the veins which carry oxygenated and deoxygenated blood respectively.
The blood is the component flowing through the blood vessels. The blood is a liquid tissue, in which the liquid component is called the plasma and the cellular component is represented by three types of cells. These are the red blood cells, white blood cells and platelets. The nutrients flow freely in the blood plasma and oxygen is carried by the Red blood cells.
The heart is the pump of this system, it contracts to push blood through the blood vessels and relaxes to allow blood into its chambers. The human heart has four chambers.
Therefore, the correct option is B.
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An event that restricts the size of a population such as weather events like drought or flood is likely a
1)density dependent limiting factor
2)density independent limiting factor
3)immigration
4)emmigration
Answer:
The correct answer is - 2) density-independent limiting factor.
Explanation:
Density-independent limiting factors are the factors that cause a change in the size of the population without getting influenced by the density of the population.
Density-independent limiting factors include biotic or abiotic factors with catastrophic conditions such as natural disasters such as floods, earthquakes, drought, fires, and many more.
Drought affects the size of the population by increasing competition in the ecosystem for resources.
Explain how a rollercoaster converts potential energy to kinetic energy
why dont all species undergo sexual selection
Which of the following is a function of the cell wall?
(Choice A)
A
To package proteins
(Choice B)
B
To carry out photosynthesis
(Choice C)
C
To give the cell a rigid structure
(Choice D)
D
To provide energy for the cell
Answer: (Choice C)
To give the cell a rigid structure
Explanation:
It is in its name! Cell WALL (walls provide structure) ! In addition, choice A refers to the ER, choice B refers to cholorplasts, and choice D refers to the mitochondria (The powerhouse of the cell). This leaves choice B as the the only answer!
Hope this helps :)
Answer:
D.
Explanation:
to provide energy for the cell
why is prophase the longest phase of mitosis
Answer:
During prophase, which occurs after G2 interphase, the cell prepares to divide by tightly condensing its chromosomes and initiates mitotic spindle formation. The chromatin fibers condenses into discrete chromosomes. The nucleolus also disappears during early prophase.
Answer:
During prophase, which occurs after G2 interphase, the cell prepares to divide by tightly condensing its chromosomes and initiates mitotic spindle formation. The chromatin fibers condense into discrete chromosomes. The nucleolus also disappears during the early prophase. It's the most common/longest phase because of how long it takes to separate the chromatin, connect spindles, and prep for the rest. The cell essentially spends most of it doubling up on your DNA and prepping.
Explanation:
hope this helps have a good rest of your night :) ❤
what do cells and heredity have in common?
11 - Lulu the Lioness: A Heroine's Story
Answer:
lion as a highly social animal present a number of issues when it comes to knowing parentage: there can be multiple males in a group mating with many of the female, females raise the young of other pride member.
Crossing-over does not occur between linked genes.
TRUE
FALSE
The table shows the gallons of fuel remaining after a car travels a certain distance in miles.
The change in fuel remaining from one row to the next in the table is
gallon(s).
The change in distance from one row to the next in the table is
mile(s).
The slope of the line that runs through the points given in the table is
.
The slope indicates a
Answer:
The slope shows efficiency of the engine.
Explanation:
The slope indicates that the car travels a certain distance by using a specific amount of fuels. This slope shows efficiency of the engine of that car by using fuel to cover a specific distance. If the car travels more distance and used little amount of fuel so it means that the car engine has high efficiency whereas if the car used more fuel and covers little distance so we can say that it has low efficiency.
a) -0.04 gallon(s).
b)1 mile(s).
c) -0.04 (again)
d) loss of 0.04 gallons of fuel for every 1 mile.
are protein molecules made by ribosomes in the cell
Answer: yes they are
Explanation:
Answer:
Yes that would be Correct.
Explanation:
After running, Ollie’s blood pressure was high. His nervous system sensed this and sent a message to decrease heart rate and blood flow.
Which system worked together with the nervous system?
skeletal system
circulatory system
respiratory system
digestive system
Answer:
circulatory system
Explanation:
what are the benefits to selective breeding?
Benefits of selective breeding:
Variation
Longer life span for bred animals
Less harm to surrounding organisms (for example, humans)
More food (plant breeding)
Faster growth (plant breeding)
Describe how DNA and RNA direct cell differentiation. Give an example of how environmental factors may influence cell differentiation.
Answer:
1- DNA: a specific DNA sequence encodes a transcription factor which activates the expression of target genes involved in cell differentiation
2- RNA: short non-coding RNAs may bind to enhancer regions and thus activate the expression of target genes involved in cell differentiation
3- Environmental factor: temperature may control the expression of genes involved in cell differentiation pathways
Explanation:
The deoxyribonucleic acid (DNA) contains the genetic material required to encode proteins. Some of these proteins are transcription factors involved in the activation of diverse signaling pathways, including, for example, cell differentiation and proliferation. On the other hand, microRNAs (miRNAs) are short non-coding RNAs that have the ability not only to repress but also to activate transcription by binding enhancer sequences. The miRNA activation mechanism has recently been discovered. In consequence, some miRNAs may potentially activate the expression of target genes involved in cell differentiation (e.g., c-myc gene). Finally, environmental factors (e.g., nutrient availability, salinity, temperature, etc.) may also activate gene expression and thus control diverse pathways such as cell differentiation, cell proliferation and cell death (apoptosis).
easy biology question:
Which of the following are not correctly paired with their function:
Golgi body - packaging and transport
Rough ER - modifying lipids
Microtubule - support and structure
Smooth ER - detoxification
will give brainliest! :)
Answer:
Rough ER - modifying lipids
Explanation:
Rough ER does not modify lipids! Smooth ER does that! Hope this helps :)
Describe how ions, water and sugar are obtained and
transported through plants.
6 mark
Answer:
Water and ions are obtained from soil and glucose is obtained from leaves.
Explanation:
Water and ions are absorbed by the plant through roots from the soil whereas glucose is produced in the leaves during the process of photosynthesis. Vascular bundles such as xylem and phloem transported water, ions and glucose within the body. Xylem moves water from roots to the upper water of plants such as leaves, stem etc whereas phloem transported glucose from leaves to other parts of plant.
Which of the following are the possible allele combinations from the gametes of an organism with the genotype of AaBb?
A
AB, only
B
AB and ab, only
С
Aa and Bb, only
D
AB, Ab, aB, and ab
Answer:
AB I'm pretty sure ysv6igscugz hii shivhxhix vhzo xvjz joxpj xj
The possible allele combinations from the gametes of an organism with the genotype of AaBb is AB, Ab, aB, and ab. The correct option is D.
What are alleles?Alleles are variations of the gene. The offspring contain genes or traits from both parents. The same trait is given by both parents, one become dominant and one become recessive.
A gamete is a haploid cell that fuses with another cell to produce offspring, This occurs during fertilization. The female gamete is called ova or egg, or male cells are sperms.
When the genotype that will be produced by the fusion of AaBb is AB, Ab, aB, and ab. The small letters denote the recessive gene and the capital letter denotes the dominant genes.
Thus, the correct option is D. AB, Ab, aB, and ab.
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Some. produces variable traits depending on environmental conditions
Answer:
Some genes produces variable traits depending on environmental conditions
Explanation:
The interaction between some genes and environments confers on individuals different degrees of susceptibility in the appearance of a certain characteristic or in the expression of some variable traits. The trait appears in individuals who have reached a certain threshold, thus the variability in phenotypic expression could be related to the greater or lesser number of predisposing genes in each individual. The differential expression of genes depending on the environment is called the reaction norm, and it refers to genes that can be expressed in a different way in different individuals, depending on the environment in which those individuals develop. The norm of reaction is the set of pathways that a genotype can follow, in all favorable and unfavorable environments, until giving rise to the various possible phenotypes.
Answer:
genes
Explanation:
. Occurs at the full and new Moon phases; Earth, Moon, and Sun are in alignment pulling the water in the same direction A spring tide B neap tide
ALOT OF POINTS! PLEASE HELP I BEG OF YOU!! NO RANDOM ANSWERS PLEASE!!!
1. Give two similarities between each of the skulls that might lead to the conclusion that these are all related species.
Answer:
here!
Explanation:
the eyes and the beak shape on the skulls are similar throughout all of the species and that circle in between their teeth which may be a gap is consistent throughout the skulls.
the anthers in this flower located above or below the stigma
Answer:
The anther produces pollen (male reproductive cells). The filament holds the anther up. During the process of fertilization, pollen lands on the stigma, a tube grows down the style and enters the ovary. Male reproductive cells travel down the tube and join with the ovule, fertilizing it.
Explanation:
Which of the following is the adapted feature of polar bears to live in extremely cold climate?
a. white fur, fat below the skin, keen sense of smell
b. thin skin, large eyes and white fur
c. a long tail, strong claws, white large paws
d. white body, paws for swimming, gills for respiration
(I will give brainleist who give first answer)
Answer:
option a
Explanation:
a polar bear has white fur thick fat and a keen sense of smell like most bears. Just look at a photo of a polar bear and that is clear
what type of spreading infection is coughing
Answer:
The most common mode of spread for respiratory viruses is via (C) respiratory droplet transmission. Virus-laden droplets (generated by coughing, sneezing, or talking) are propelled from an infected person directly onto the mucosal surfaces of a host.
Explanation:
Hope it helps you
Virus-laden droplets (generated by coughing, sneezing, or talking) are propelled from an infected person directly onto the mucosal surfaces of a host.
What are some of the main characteristics of life?
The Characteristics of Life Living things include both the visible world of animals, plants, and fungi as well as the invisible world of bacteria and viruses. On a basic level, we can say that life is ordered. Organisms have an enormously complex organization.
Explanation:
Compare and contrast
the different types of asexual
reproduction.
A gas evolving reaction
Someone please help, these questions are hard
Answer:
B: Polyermase Chain Reaction
Explanation:
PCR is when we take a segment of DNA and multiply it! We can see that the number of DNA segments are increasing therefore it is PCR. Hope this helps!
Which type of change in chromosome composition is illustrated in the diagram?
Answer:
translocation I believe! :)
Explanation:
Which statement about the specific immune response is FALSE?
Answer:
yes it is false I'm sorry I I'm wrong but I'm sure it's false