A chromosome consists of a single, double-stranded DNA molecule. Chromatids are two molecules of double-stranded DNA joined together in the center by a centromere. Chromosomes have a thin ribbon-like structure. Chromatids have a thin and long fibrous structure.
Compare and contrast passive transport, active transport, and osmosis
Answer:
Passive transport moves molecules and ions from a higher concentration to a lower concentration without any energy while active transport does the same thing only it uses energy. Osmosis deals with the net movement of solvent molecules through a membrane with a higher solute concentration. Osmosis and active transport both work together, while osmosis does its own movement the active transport moves the dissolved solutes across a membrane against a concentration gradient.
Active transport and passive transport are almost the same they function the same only one doesn't require energy while the other one does. Hence why active transport and osmosis work well together it's because of the energy that helps transport dissolved solutes.
Hope this helped :)
Number of Amino Acid Differences between Species
Species 1 Species 2 Species 3 Species 4
Species 1 0
74
7
65
Species 2 74
0
29
13
Species 37
29
81
Species 4 65
13
81
O
WHICH TWO SPECIES ARE LEAST CLOSELY RELATED?
a
Species 1 & 2
Species 1&3
Species 2 & 3
Species 3 & 4
Answer:
table below shows the number of differences in the sequences between each pair of species. THE NUMBER OF AMINO ACID DIFFERENCES IN CYTOCHROME . c AMONG FIVE SPECIES E. ferus D. polylepis G. gallus A. forsteri E. africanus E. ferus 0 21 11 13 1 D. polylepis 0 18 17 20 G. gallus 0 3 10 A. forsteri 0 12 E. africanus 0
Which of the four molecules has the highest amount of stored energy? Carbon dioxide water oxygen glucose
Answer:
Glucose
Explanation:
Glucose has the highest amount of stored energy that the others because glucose posses more chemical bonds which can undergo rearrangement as a result of chemical reactions. When the bonds are rearranged there is release of energy meaning that the bonds in glucose consist of stored energy. Water, carbondioxide and oxygen does not have much chemical bonds compared to glucose, hence they don't have stored chemical energy.
cell body-__________ of the neuron
Answer:
soma
Explanation:
How did early land animals differ from those common today?
Answer:
Early land animals had both lungs AND gills, and their bodies consisted of few hard parts. Meaning they lacked things like an exoskeleton for instance. Animals today have either lungs OR gills and many have protecting hard parts of their bodies.
Explanation:
Which of the following is a characteristic of all reptiles?
Select one:
a.
lack vertebrae
b.
use gills to breathe
c.
are fully aquatic
d.
are ectothermic
Answer:
D - Are ectothermic; (took the test)
Explanation:
Reptiles are cold-blooded, scaly vertebrates.
Reptiles are the Chordata that belongs to the animal kingdom and are covered with the scaly body. All reptiles are ectothermic or cold-blooded. Thus, option d is correct.
What are the characteristics of reptiles?Reptiles are the vertebrates that have backbones and scaly bodies hence Chordates. The dry skin of the reptiles is covered by scales and bony plates. They have four legs and have intermediate properties between mammals and amphibians.
They breathe through the lungs, and almost all reptiles lay eggs and hence are oviparous. They have cold-blooded metabolisms and hence are ectothermic. They regulate and maintain the internal body temperature according to the external environment.
Therefore, all reptiles are ectothermic (cold-blooded).
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please help asap i put a picture of my questions. please answer as many as you can
Answer:
5. Centrioles
Explanation:
hope im right
please help me im desprit
Answer:
B
Explanation:
In the 1840s, many Irish families grew one variety of potato for food. Suggest
why a disease (potato blight) caused mass starvation in Ireland at this time.
Which statement describes carrying capacity as it relates to a group of prairie
dogs?
A. The amount of food and water available for prairie dogs in an area
B. The amount of space available for prairie dogs to live in an area
C. The maximum number of prairie dogs that an area can support
D. The maximum number of predators that can live in an area without
killing off all the prairie dogs
Answer: Option C
I hoped that helped!
The maximum number of prairie dogs that an area can support.
What affects wearing capability?Wearing potential, or the wide variety of individuals that an environment can sustain over time without destroying or degrading the environment is determined via some key elements: meal availability, water, and area.
How do you degree the carrying ability of a habitat?Wearing ability may be anticipated via calculating the total vicinity and an overall populace of that place.
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Biology, for G₁ and G₂, what does the G stand for?
Explanation:
Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth).
Do you think the gene EEF1 ALPHA1 supports cell theory? Explain your response.
Answer:EEF1 supports the cell theory because protein synthesis is required for cells to surviveExplanation:The cell theory postulates that the organisms are composed of cells, which represent the basic and functional units of all living forms.
Explanation:
Answer:
yes
Explanation:
Which is an example of genetic diversity within a rain forest?
A. All of the genes found within an ecosystem
B. DNA of a single three-toed sloth
C. Many variations of a Jaguar spots
D. Wide variety of beetle specie
Answer:
A.All of the genes found within an ecosystem
ANSWER QUICKLY PLEASE I DON’T UNDERSTAND. EASY POINTS.
Why would an enzyme that is effective with one reaction have no effect on another reaction?
Enzymes are not reactants and are not used up during the reaction. Once an enzyme binds to a substrate and catalyzes the reaction, the enzyme is released, unchanged, and can be used for another reaction. This means that for each reaction, there does not need to be a 1:1 ratio between enzyme and substrate molecules.Answer:
Explanation: now gimmie that coochie luigie
Do you think an organism can survive alone in nature. justify your view.
Answer:
no it cannot live alone because nature depends on everyone
what could cause a population to reach it's carrying capacity
Answer:
As competition increases and resources become increasingly scarce, populations reach the carrying capacity (K) of their environment, causing their growth rate to slow nearly to zero. This produces an S-shaped curve of population growth known as the logistic curve (right).
Explanation:
hope this helps
Answer:
people having kids with everyone ,
Explanation:
1. As food availability increases, carrying capacity increases in all ecosystems.
2.Animals who feed on the predators of the fish will increase in number.
3.As population density increases, the spread of disease is increased
4.How is disease affected by a population's density?
5.The population has a limited food supply.
6. Natality - birth rate
Mortality - death rate
Immigration - an individual enters the population
Emigration - an individual leaves the population
Which species has a higher reproduction potential?
A. Humans
B. Butterflies
C. Dogs
PLEASE HELP ME
Answer:
B
Explanation:
i dont really know but i guess this?
Answer:
I´m pretty sure dogs
Explanation:
because they are PrObAbLy the easiest to get to copy you. hope this helped. and forgive me if im wrong because im only in 6th grade (,:
through which conversations is energy released.
The answer is B : ATP to ADP
Explanation:
100% on quiz
Predators Contribute to a Stable Ecosystem
In nature, energy flows in only one direction. Transfer of energy must occur in an ecosystem
because all life needs energy to live, and only certain organisms can change solar energy into
chemical energy. Producers are caten by consumers that are, in turn, caten by other consumers,
Stable ecosystems must contain predators to help control the populations of consumers. Since
ecosystems contain many predators, exterminating predators would require a massive effort that
would wipe out predatory species from barnacles to blue whales. Without the population control
provided by predators, some organisms would soon overpopulate,
Explain the phrase "only certain organisms can change solar energy into chemical energy," in the
underlined portion of the first paragraph. In your answer be sure to identify:
1)the type of nutrition carried out by these organisms
2)the process being carried out in this type of nutrition
3)the organelles present in the cells of these organisms that are directly involved in changing solar
energy into chemical energy
The phrase "only certain organisms can change solar energy into chemical energy," is about the plants which means producer organisms.
What is an example food chain?An example of this type of process is: plants generate their own food and are part of the feeding of insects, which are consumed by frogs. They serve as food for snakes, a source of nutrition for birds, which are consumed by decomposers.
Organisms of this level are classified as autotrophs, that is, they are living beings capable of producing their own food, not being necessary to feed on another living being. Plants and algae are organisms classified as producers.
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the atom below has an incomplete valence shell
Answer:
No it actually doesn't
Explanation:
You can thank later
I give out brainlist
When Mendel first crossed a purebred tall pea plant with a purebred short pea plant he called these two plants the parental (P) generation.
True
or
False
Answer:
true
Explanation:
they were the original plants
When using a light microscope, focus the specimen with the scanning objective lens first.
Answer:
Explanation:
PLACE THE SLIDE ON THE MICROSCOPE STAGE SUCH THAT THE PORTION OF THE SLIDE YOU WANT TO VIEW IS UNDER THE OBJECTIVE. 5. FOCUS ON SPECIMEN, FIRST USING THE COARSE AND THEN THE FINE FOCUS CONTROLS. YOU MAY HAVE TO MOVE THE SLIDE AROUND ON THE STAGE OF THE MICROSCOPE TO BRING THE SPECIMEN INTO THE VIEWING AREA.
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First, we have to place the slide on the microscope. There are different types of microscope such as simple microscope, compound microscope.
What is a light microscope?Light microscope is a biological instrument which uses visible light to see the objects. Light microscope works on the principal of reflection and refraction. It is composed of objective lens and eyepiece lens.
Steps for using light microscope:
Place the slide on the microscope.Focus the specimen, first using the coarse and then the fine focus controlMove the slide around on the stage of microscope.Applications of light microscope:
It is used for determining the morphologies of living cells.It helps in studying structure of locomotion.Therefore, First we have to place the slide on the microscope. There are different types of microscope such as simple microscope, compound microscope.
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43. Define the light-dependent and light independent processes of photosynthesis and the end-products produced
Answer:
They provide the energy to form carbohydrates from carbon dioxide molecules. The light-independent reactions are sometimes called the Calvin cycle because of the cyclical nature of the process.
Explanation:
2. The nucleus of an atom contains
1 point
O protons and neutrons
protons and electrons
O neutrons and electrons
O protons, neutrons, and electrons
1. Which of the following is a chemical change?
dissolving salt in water
melting ice
combining amino acids to form a protein
O water moving through a plant by capillary action
Answer:
combining amino acids to form a protein
Explanation:
It is a chemical change because you are creating a new substance
what are two main food sources for lipids?
Answer:
1) Animals Sources: Dairy Products- Meat, butter, ghee meat, fish, pork, and eggs, 2) Vegetable Sources: Cooking oil, sun flower oil, mustard oil, ground nut oil, fats from other vegetable sources.
Explanation:
Use the picture below to help you answer the question.
Which container holds a gas?
Question 24 options:
(A)
(B)
(C)
D.None of the above.
Answer:
A
Explanation:
Because the particles are quite away and look alike as gas diagram
Hydra reproduce by_____
A.budding
B.Fission
C.Regeneration
D.Sexual Reproduction
WILL MARK BRAINLIEST IF IT IS CORRECT
Answer:
When food is plentiful, many Hydra reproduce asexually by budding. The buds form from the body wall, grow into miniature adults and break away when mature. so (A) budding is correct i believes
xplanation:
what is the cleanest in a school meaning less bacteria?
The cleanest in a school is the sinks. Or the bottles of Hand Sanitizer.
What type of stress is happening at the San Andres Fault ?
Answer:
Shear stress (strike slip fault)
Explanation:
