Answer:
D
Explanation:
spindle fibers attach to kinetochores during _____.
Answer:
Metaphase.
In prometaphase, kinetochores appear at the centromeres and mitotic spindle microtubules attach to kinetochores. In metaphase, chromosomes are lined up and each sister chromatid is attached to a spindle fiber. In anaphase, sister chromatids (now called chromosomes) are pulled toward opposite poles.
A scientist hypothesizes that a new medication can reduce the chances of catching a cold. Which of these would most likely be the dependent variable in a study involving this medication?
A - The participants who do not receive the medication
B - The number of participants who catch a cold
C - The age of the participants
Answer:
B - The participants who do not receive the medication
Explanation:
I like to think of the dependent variable as the outcome variable. In this case it would be the number of people that catch a cold because it depends on if they take the medication or not.
What is the name of a species that is the first species to colonize an
area?
Select one:
a. Frontier species
b. Pioneer species
c. Explorer species
d. Pilgrim species
Answer:The answer is b. Pioneer species
Step-by-step explanation; The first species to colonize an area after a major disturbance are called pioneer species; they help to form the new environment. Secondary succession occurs after a disturbance such as a forest fire, where there is still some organic matter to allow new plants to grow.
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Answer:
The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations,
Explanation:
can you mark me brainliest
centromeres divide and sister chromatids become full-fledged chromosomes during:
Answer:
Anaphase
Explanation:
Sister chromatids separate and daughter chromosomes migrate to opposite poles during anaphase.
Water is reabsorbed during filtration by renal capillaries.
Answer:
Most of the solutes get reabsorbed in the PCT by a process called tubular reabsorption. In the loop of Henle, the filtrate continues to exchange solutes and water with the renal medulla and the peritubular capillary network. Water is also reabsorbed during this step.
Explanation:
Hope this helps...
TWO predator adaptations used to help them capture their prey are *
camouflage
outrunning prey
mimicry
fleeing
Answer:
Under the pressure of natural selection, predators have evolved a variety of physical adaptations for detecting, catching, killing, and digesting prey. These include speed, agility, stealth, sharp senses, claws, teeth, filters, and suitable digestive systems.
Explanation:
hope this helps mah dude.
b) How do you know the students in the above study are acting as scientists? (1 point)
Answer:
Could you edit the question and add the study, please?
Explanation:
sunlight gives what to the chloroplasts in side leaves
Answer:
Chloroplasts absorb sunlight and use it in conjunction with water and carbon dioxide gas to produce food for the plant. Chloroplasts capture light energy from the sun to produce the free energy stored in ATP and NADPH through a process called photosynthesis.
During cellular respiration, every living thing uses ______ and releases ______ back into the environment.
Answer:
oxygen and carbon dioxide
Explanation:
The National Climatic Data Center (NCDC) in Asheville, North Carolina is the world's largest active archive of weather data.
According to the NCDC, each of the years from 1997-2009 represent the warmest global temperatures on record, dating back to
1880. Which of these would represent a biased conclusion based on this data?
A)
the data only dates back to the 1880's
B)
the average global temperature for 2007 as 58.00 °F
C)
the warmest year on record was 2005 and the coolest was 1911
D)
the automobile industry is solely to blame for the increase in global
temperatures
Answer:
D) the automobile industry is solely to blame for the increase in global
temperatures
Explanation:
that is based because many things cause global warming, not just the exhaust from cars.
Describe the genetic components of the genetic material containing two variants of each chromosome pair, one from each parent. Give an example of the inputs and outputs of mitosis.
Answer:
Human cells contain two sets of chromosomes, one set inherited from each parent. Each cell normally contains 23 pairs of chromosomes, which consist of 22 autosomes (numbered 1 through 22) and one pair of sex chromosomes (XX or XY). However, sperm and ova normally contain half as much genetic material: only one copy of each chromosome. Each chromosome contains many genes, the basic physical and functional units of heredity.
Explanation:
Identify the independent variable and the dependent variable in your penny
experiment?
Answer:
Independent Variable = The thing you change
Dependent Variable = The thing you measure
Explanation:
An independent variable is the thing that you are changing in your experiment to be able to get different results. For example, if a question says "What will happen to a cup of tea when you change the temperature of the water added to it?"... then the independent variable will be the temperature of the water.
A dependent variable is the thing that you are measuring. For example, if you are studying the amount of light absorbed from different surfaces, then the dependent variable is the unit of light absorbed, which would be measured in Au (Absorbance unit).
You can now take this knowledge and apply it to your question.
In glycolysis ____
is oxidized, and ____ is reduced.
A) Nad+....glucose
B) glucose.....Nad+
C) ATP.......ADP
which is an abiotic factor that functions as a limiting factor for the autrophs in the ecosystem below?
Answer:
i hope it helps you
Examples; of biotic factors include any animals, plants, trees, grass, bacteria, moss, or molds that you might find in an ecosystem.
Explanation:
In general, biotic factors are the living components of an ecosystem and are sorted into three groups: producers or autotrophs, consumers or heterotrophs, and decomposers or detritivores.
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Match the letter of the Characteristic of Life
to the correct example
a. cells d. reproduction
b. energy e. growth & development
C. homeostasis f. response to
stimuli
_1. You jump out of your seat when
you hear a loud crashing sound.
_2. Plants performing photosynthesis
3. Fish will produce extra offspring
to ensure the survival of their species.
4. Babies are born with 300 bones
which fuse together to become 206 bones
in adults.
5. A unicellular organism like
bacteria can be fully functional on its own
and is therefore considered alive.
_6. Your body conserves water when
you are dehydrated and therefore you
urinate less.
Answer:
You jump out of your seat when you hear a loud crashing sound - Response to Stimuli (F)Plants performing photosynthesis - Energy (B)Fish will produce extra offspring to ensure the survival of their species. - Reproduction (D)Babies are born with 300 bones which fuse together to become 206 bones in adults - Growth and Development (E)CELLS (A)HOMEOSTASIS (C)ExplanationMy answers were based on the following knowledge:
a. cells - all living things are made up of cells
d. reproduction - organism produce offsprings
b. energy - organisms make or consume food and break down food for energy
e. growth & development - organisms become more mature.
c. homeostasis - organism find a way to maintain a balance system
f. response to stimuli - organisms react to environmental factors
which part of electromagnetic spectrum drives the photosynthetic process in plants?
Answer:
visible ligth
Explanation:
Visible light ranges from low blue to far-red light and is described as the wavelengths between 380 nm and 750 nm, although this varies between individuals. The region between 400 nm and 700 nm is what plants use to drive photosynthesis and is typically referred to as Photosynthetically Active Radiation (PAR).
2. What is the difference between parasitic roots and mycorrhizae?
Answer:
the main difference between the paasitic roots and mycorrhizae is that the parasitic roots are adventious roots of parasitic plants penetrating into the conducting tissue of the host plant whereas mycorrhizae r the association's between fungi and higher plants
PLEASE HELP WITH THESE QUESTIONS!!! ALSO NO LINKS PLEASE THEY DONT LET ME VIEW THEM!!!
1. Which choice shows functions of proteins in living organisms?
A.) Store the genetic code and give support
B.) Structure and support
C.) Immediate and stored energy
D.) Store energy and the genetic code
2. Which choice best describes a long chain of amino acids?
A.) Polypeptide
B.) Peptide
C.) Nucleic acid
D.) Disaccharide
3. What could cause a change in the shape of a red blood cell that would affect its function?
A.) A change in the quaternary structure of the protein hemoglobin
B.) A change in the primary structure of the protein hemoglobin
C.) A change in the secondary structure of the protein hemoglobin
D.) A change in the tertiary structure of the protein hemoglobin
Answer:
1.C. 2.A. 3.B
Explanation:
Hope it helped you brainiest pls and thank you have a great day!!!!1
Proteins help Store energy and the genetic code. The long chain of amino acids describes the long chain of polypeptides.
What is protein?
Proteins are among the most prevalent organic molecules in biological systems and have a much wider range of structural and functional variations. Many thousands of proteins, each serving a different purpose, can be found in a single cell.
All proteins are composed of one or more chains of amino acids, despite the fact that their structures and activities differ substantially from one another.
In biological reactions, enzymes function as catalysts, accelerating the reactions. Each enzyme may distinguish between one or more substrates, or the molecules that act as the catalysts for the reactions they catalyze.
Therefore, Proteins help Store energy and the genetic code. The long chain of amino acids describes the long chain of polypeptides.
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Organelles are specialized structures that perform various functions in the cell. What are the
functions of the organelles in an animal cells?
Answer:
The function of organelles is to provide a specific function for the cell.
Explanation:
Eukaryotes have organelles not prokaryotes. All the cellular processes of prokaryotes occur in one cell. The advantage of having seperate spaces to do various functions is for regulation and maintance.
Explain how Earth's magnetic field is generated.
Answer:
The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in the Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.
Answer:
On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet
True or false each member of the food web is the pray of another member of the food web
Answer:
true. because each site can learn from the other.
How does refrigeration of food prevent it from spoilage?
Refrigeration preserves food by slowing down the growth and reproduction of microorganisms as well as the action of enzymes which cause food to rot. Freezing food slows down decomposition by turning residual moisture into ice, inhibiting the growth of most bacterial species.
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Describe three ecosystem services that insects provide?
Answer:
dung burial, pest control, and pollination
The three ecosystem services that insects provide are dung burial, pest control, and pollination.
What is an ecosystem?Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.
Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.
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True or False: Myocardial infarction might not present any symptoms.
*true
Answer:
It's true
Explanation:
Theres a quizlet called "Physiology unit 2" with the answers
cancer is the result of an improperly regulated cell cycle
which one is the odd one out Salt Cement Water Limestone Blood
Answer:
Blood
Explanation:
its the only thing with cells
Which of the following was developed following Griffith's 1928 experiment. A. Some pathogenic bacteria cannot be heat-killed. Bacterial virulence is related to temperature resistance. B. Streptococcus pneumoniae causes disease. C. DNA from dead encapsulated bacteria can transform living un-encapsulated bacteria into living encapsulated bacteria. D. Dead encapsulated bacteria can cause disease.
Answer:
I believe A is the answer, but I'm not positive.
Explanation:
Griffith demonstrated in 1928 that the ability to synthesis a capsule and consequently become virulent can be transferred from heat-inactivated “smooth” strains to surviving but avirulent “rough” strains of S. pneumoniae. Therefore, option (A) is correct.
What was Griffith's experiment?British bacteriologist Frederick Griffith's 1928 bacteria experiment was the first to demonstrate the "transforming principle," which led to the realization that DNA serves as the carrier of genetic information.
Griffith tried injecting mice with heat-killed S bacteria as part of his investigations (that is, S bacteria that had been heated to high temperatures, causing the cells to die). Unsurprisingly, the mice were not harmed by the heat-killed S bacterium.
The first study demonstrating that bacteria are capable of transferring genetic information through a process known as transformation was conducted by Frederick Griffith.
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Which is an example of active transport
Answer:
sodium-potassium pump.
Answer:
exocytosis
pinocytosis
phagocytosis
Explanation:
FILL IN THE BLANKS:
In a pedigree, ____ are represented by squares, and ____ are represented by circles.
Answer:
1) Males
2) Females
Explanation:
In a pedigree, Males are represented by squares, and Females are represented by circles.