Answer:
In active transport, the particles move across a cell membrane from a lower concentration to a higher concentration.
7.An experiment was conducted that showd the building blocks of life (amino acids) could indeed be formed by the combination of warm salt water, volcanic gases, and sparks of electricity.
Answer:
The most significant experiment performed to date on the formation of organic molecules remains that of Miller and Urey in 1952 when they sought to test the hypothesis of Oparin and Haldane that the organic building blocks of life emerged from a reducing atmosphere (Miller, 1953). Miller filled a flask with the four gaseous elements of the reductive atmosphere: methane, ammonia, hydrogen and water. He then passed electrical discharges through them to simulate lightning. After 125 h of the experiment, using the equipment available to him at the time, Miller identified several alpha amino acids contained within the residues.
Which best describes the reactants and products of photosynthesis?
Reactants are formed inside the plant, and products are taken in from the environment by the plant.
O Reactants are taken in from the environment by the plant, and products are formed inside the plant.
O Reactants and products are formed inside the plant.
O Reactants and products are taken in from the environment by the plant.
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Answer:
reactants are taken in and products are formed within
co2 and h2o are the reactants and o2 and sugar are the products
Explanation:
Identify an organism's need that is met by an abiotic factor
A wolf's need for warmth, fur coat
A fish's need for food, water
A lizard's need for warmth, sun
A rabbit's need for food, grass
If the parent cell has 40 genes how many will each daughter cell have ?
A. 20
B. 80
C. 40
Answer:
20 i believe
Explanation:
In two or more complete sentences, compare species diversity and genetic diversity, and glve an example for each one.
Write your answer in the essay box below.
Answer:
Diversity in the genetic characteristic or traits present in a species throughout populations of particular species called genetic diversity. Genetic diversity deals with the number of alleles and genes found between individuals. It is responsible for the adaptation and distribution of species.
Species Diversity is the relative abundance of species found in a given biological organization in a community and interacts with biodiversity by changing biotic factors.
GTA ATC TCT CTG TAA
What would the opposite DNA strand be?
Which hormone is used by both males and females? A. Estrogen B. Luteinizing hormone C. Progesterone D. Testosterone
Answer:
luteinizing hormone
Explanation:
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1. The __________ determines if glucose moves into or out of the hepatocyte. multiple choice 1 amount of intracellular ATP versus intracellular glucose glucose concentration between the intracellular and extracellular fluid oxygen concentration between the intracellular and extracellular fluid amount of intracellular ATP available
glucose concentration between the intracellular and extracellular fluid.
The glucose concentration between the intracellular and extracellular fluid determines if glucose moves into or out of the hepatoctye.
How does glucose move?Glucose during metabolism are able to cross the blood brain barrier, and enters neurons. The concentration will determine if glucose will move.
They may be involved in the synthesis.
Therefore, between the intracellular and extracellular fluid determines if glucose moves into or out of the hepatoctye
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PLEASE! ASAP! 100 POINTS!
Answer:
je n'arrive a faire o travail je suis désolée
Answer:
THis was 2 months ago so dont think you need this
Explanation:
Sophia is an inspector for the state agriculture department. She goes out to pig farms and cattle ranches to make sure that state regulations are being followed. What word describes the type of products Sophia is inspecting?
A.) Livestock
B.) Crops
C.) Non-perishables
The statement "energy is conserved" means that
A. Energy cannot be destroyed or created.
B. The total amount of energy in the universe remains the same.
C. All of these
D. Energy is not lost, but it can change form.
Answer:
B
Explanation:
In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. For instance, chemical energy is converted to kinetic energy when a stick of dynamite explodes.
Please help me with number 2-5
Answer:
2. Heterozygous for that disease
3. 1/4 or 25% chance of the offspring having said disease
4. Nucleotides
5. The two strands are held together by hydrogen bonds between the bases.
Comparing and Contrasting in which class of elements is there a greater range of properties, the metals or the nonmetals? Give an example to support your answer.
Answer:
In which class of elements is there a greater range of properties, the metals or the nonmetals? Give an example to support your answer. Non-metals have greater range of properties given that they exist as solids, liquids and gases. And also that they can polymerize, crystallize and form organic compounds.
4. What properties do compounds have with strong attractive forces between their atoms?
Often, one change in an ecosystem causes another change. Drag and drop the tiles to show the order in which this group of changes would happen.
Answer:
2. The Prey Population increases:
As a result of the predator population decreasing in size, the prey will no longer be hunted as much and so their population will rise.
3. The area is overgrazed due to overpopulation.
With so much prey in the system, they will eat up too much of the grass and flora which will lead to overgrazing.
4. The prey population decreases
With the and being overgrazed, the system will no longer be able to support the large number of prey. A lot of them will therefore starve to death which will decrease the pray population.
5.Invasive species dominate the ecosystem.
With less competition for resources from the natural plants in the area which have now been overgrazed, invasive species will dominate the system.
Tendons connect ___________ to _______________
Answer: muscle to bone
PLEASE HELP ASAP!!
2. What evidence gives us insight into early human behavior?
O cave paintings
O DNA base sequences
skeletal remains
Answer:
I would say the most logical answer would be DNA base sequences
skeletal remains.
Explanation:
explain how sexual reproduction
leads to increased variation from parent to offspring?
Sexual reproduction is the process of reproduction which leads to increased variation from parent to offspring through crossing over and fusion of gametes.
What is Sexual reproduction?Sexual reproduction is the production of new organisms through the combination of genetic information of two individuals of different sexes (male and female). In most of the species, genetic information is carried on by chromosomes in the nucleus of reproductive cells which are haploid (n) called as gametes, which then fuse to form a diploid zygote.
Sexual reproduction results in genetic variation among different offspring. When a parent forms a gamete, only one of the chromosome from each of the homologous pair is included at random through crossing over. So, an offspring might inherit a different combination of chromosomes and alleles compared to the other offspring.
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Reptiles are well adapted to life on land. What is the function of many of their adaptations to life on land?
Answer:
25
Explanation:
24x25$+#-##+$($$frjre
Explain why do you think most energy pyramids have less than five levels?
1. Write a statement that uses (correctly) the terms gamete, fertilization, and zygote. (2)
Answer:
The zygote simply is the fertilized ovum or egg cell or female reproductive cell. It is the result of the process of fertilization of the fusion of the male reproductive cell (gamete) and the female reproductive cell ( gamete). In human, the zygote is the resulted cell of fertilization of the sperm and the ovum. It is diploid or 2N which means it contains two sets of chromosomes; one set from the male and the other from the female.
The gamete is the reproductive cell. There are two types of gametes; male gamete and female gamete. In human, the male gamete is called the sperm and the female gamete is called the ovum. The gamete is the last stage of the reproductive cells to be completely formed.
Fertilization is the fusion of the male gamete and the female gamete to form the zygote. Fertilization may be external as in fish or internal as in human.
You are standing by a cliff far away from the ocean. You see a sedimentary layer with shells in it. You
ure told the shells are from oceanic organisms. How do you think this layer formed?
The layer would be formed by the strong currents as well as by waves slowly moving the shells to the share along with the other shells creating a layer of the shell as well as cliff of the rock.
What is sedimentary rock?Sedimentary rocks has been generally made up from the directly heat and these are formed when the deposition or the accumulation of the particles that are the organic or the minerals at the surface of Earth, later followed by the process of the cementation. The main feature of the sedimentary rock has been that they are formed in the multiple layers.The rocks has been made up of more than one mineral and the size of some rocks are small or big it depends upon their constituents.
Rock has been defined as when the mineral grains has been combined in the solid form and later they grow or take the shape of the cemented form has been known as the rocks.The rocks has been made up of more than one mineral and the size of the rocks are smaller or bigger it has been depends upon their constituents. Rocks has been divided on the basis of their formation by Geologists.There are mainly three kinds of rock and these are metamorphic, igneous, and sedimentary. The most durable substance is stone.
Therefore, The layer would be formed by the strong currents as well as by waves slowly moving the shells to the share along with the other shells creating a layer of the shell as well as cliff of the rock.
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Amoeba Sisters Video Select Recap: Mitosis vs. Meiosis Comparison
Could i get help with this?
Answer:
Both mitosis and meiosis occurs in Amoeba.
Explanation:
Both mitosis and meiosis occurs in Amoeba. Those kinds of Amoeba that reproduces through asexual reproduction uses mitosis in which a single parent Amoeba cell is divided into two identical daughter Amoeba cells while on the other hand, Myxamoeba reproduce through sexual reproduction in which meiosis cell division is used. In this type of reproduction, the daughter Amoeba is different from their parents Amoeba.
Why do animals not have photosynthesis?
A: animals have cell walls
B: animals have vacuoles
C: animals have chloroplasts
D: animals do not have chloroplasts
Answer:
D
Explanation:
animals do not have chloroplast . chloroplast is that used to absorb sun light to do photosynthesis so plants have it so they can make their own food
What happens to DNA in the interphase stage of cell division?
Answer:
During interphase, the cell copies its DNA in preparation for mitosis. Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, replicates its DNA, and conducts other "normal" cell functions. Interphase was formerly called the resting phase.
Explanation:
why are cocoons are kept in hot air before extraction of silk fibre
Answer:
The cocoons are put on steam (Hot boiling water Vapours) to soften the Cocoons Upper Layers and Kill the larvae (Silk Worm) & can be stored as is for more than 10 days
Explanation:
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what does divine creation mean? did charles darwin agree with this idea?
Answer:
The term creationism most often refers to belief in special creation; the claim that the universe and lifeforms were created as they exist today by divine action, and On the Origin of Species reflects theological views. Though he thought of religion as a tribal survival strategy, Darwin still believed that God was the ultimate lawgiver, and later recollected that at the time he was convinced of the existence of God as a First Cause and deserved to be called a theist.
Explanation:
5. (01.07 MC)
How do we know our current money has value? (5 points)
People talk about money a lot.
It is backed by gold.
People accept it in exchange for goods or services.
It has many security measures.
Answer:
The correct answer is - people accept it in exchange for goods and services.
Explanation:
Money is valuable because we know that it is "accepted." Money can be used to purchase goods and services even though it is no longer backed by gold. Security measures prevent counterfeiting but do not add value.
People know at that time that their current money has value when they accept it in exchange for goods or services, which is option C, as money is a medium of exchange.
The value of money is influenced by central banks. Different countries have different currencies, but the currency that is stable and has more security has more use. Money is also linked to the underlying economics, such as the ability of a country to buy and manufacture goods, thus increasing the economy. There are also many security measures, such as unique designs, special inks, holograms, etc., that are helpful for maintaining trust and confidence in the currency.
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why chilli has a dicotyledonous root
Answer:
cz
Explanation:
Dicots usually have taproot root systems. Chilli Plants are Perennials, a group that includes most vascular plants such as trees and shrubs, continue to grow over the course of many years. In most perennial plants, flowering and seed production occurs continually for an indefinite number of seasons.
pleasee help!:( im so behind
what are some of the challenges to the question "how did life first arise on earth?" why is this question a challenge to study ? write at least 3 complete sentences.
actual answers plz:(
The earliest known life forms fossilized microrganismos found in hydrothermal vent precipitates, that many have lived as early as 4.28gya relatively soon after oceans formed 4.41 gta, and not long after the formation of the earth.
starting in the 1980s many scientists argued that life got its start in scalding, mineral-rich waters streaming out of the deep sea hydrothermal vents evidence for hot start included studies on the tree of life which suggests that most primitive species of microorbs alive today thrive on hot water
earth was formed around 4.54 gya approximately 1/3 of the age of the universe, by accretion form the solar nebula, volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained no oxygen
hopefully this helps, sorry if it doesn't