Answer:
b
Explanation:
mha
Answer:
b
Explanation:
Which statement is NOT a part of the cell theory?
Cells come from preexisting cells.
Cells are the basic unit of function of living things.
Cells are the basic unit of structure of living things.
Cell parts such as chloroplasts are self-replicating.
Answer:
Cells such as chloroplasts are self replicating
Explanation:
a chloroplast is not a cell its an organelle.
Cell Theory is a scientific theory proposed by Schwann in the year 1839. The cell theory has primary three postulates, which are used to describe the functioning of cells.
The correct answer is:
Option D. Cell parts such as chloroplasts are self-replicating.
The postulates of the cell theory are:
1. The cell theory states that all living cells arise from pre-existing cells.
2. The cells are the basic structural and functional unit of life.
3. The hereditary information is passed on from cell to cell, and the energy flows within the cell.
Thus, the statement that is not a part of cell theory is that chloroplast are self-replicating.
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What are some species that are extinct? W
ecome extinct?
Answer:
Below
Explanation:
Most dinosaurs
Passenger Pigeon
Saber Toothed Tiger
Dodo
Great auk
Pyrean ibex
Giant Ground Sloth
Aurochs
Which is it?? DNA, RNA, or Both??
1. Single-Stranded
2. Double-Stranded
3. Nitrogen bases
4. Thymine
5. Uracil
6. Double Helix
Make a prediction of this: A group of scientists recently proposed the idea that beets should replace salt for melting winter ice. The scientists pointed out that because beets grow underground, they continue to grow in freezing conditions. Thus, they hypothesized, an extract of beet roots could melt ice on roads in winter. To test this hypothesis, the scientists froze equal volumes of water on two separate plates. They spread an extract of beet roots on one plate of ice and sprinkled an equal amount of salt over the other plate. After keeping both plates at 0°C (the temperature at which water freezes) for a period of time, they measured the amount of melted water on each plate. Their results showed that the plate treated with beet extract contained more liquid water than the plate treated with salt.
Answer:
extract of beet roots could be used as antifreeze for water systems
Explanation:
In science, a prediction can be defined as a plausible conjecture that is subsequently proved (or rejected) using the scientific method. In other words, a prediction is the expected result obtained if the hypothesis is true. Scientists make predictions based on falsifiable hypotheses which can be tested through experimental and/or observational procedures. In this case, it could be predicted that the extract of beet roots could be used as anti-freeze for water systems in cold climates.
Geologic Time Scale
Time Period Duration (Millions of Years ago)
Cenozoic 66-0
Mesozoic 252-66
Paleozoic 541-252
Trilobites appeared approximately 521 years ago and disappeared approximately 250 million years ago. During which era did the trilobites live?
a
Cenozoic
b
Mesozoic
c
Paleozoic
d
None of These
Answer:
C. Paleozoic
Explanation:
Trilobites are a group of extinct marine arthropods. Just like many animals from today, including crustaceans, spiders, and insects, they belonged to the phylum Arthropoda. They lived in the Paleozoic era.
We can make this conclusion based on the fact that the period they existed in (from 521 to 250 million years ago) mostly fits the period described as Paleozoic (from 541 to 252 million years ago). However, we can see that they went extinct in the Mesozoic (250 million years ago is more than 252 million years ago). Compared to the entire time they existed, 2 million years is a relatively small amount of time, which makes Paleozoic the correct option.
Refer to the diagram to complete the sentence with the
correct numbers.
When hydrogen shares electrons with oxygen, the
outermost shell of the hydrogen atoms are full with
electrons and oxygen's valence shell is full
with
electrons. Because the valence shells
of these atoms are full, the atoms are stable.
:H
Answer:
Refer to the diagram to complete the sentence with the correct numbers.
When hydrogen shares electrons with oxygen, the outermost shell of the hydrogen atoms are full with 2
electrons and oxygen’s valence shell is full with 8
electrons. Because the valence shells of these atoms are full, the atoms are stable.
Explanation:
Edge 2021
According to the electronic configuration, when hydrogen shares electrons with oxygen , hydrogen atom has 2 electrons and oxygen atom has 8 electrons.
What is electronic configuration?Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.
Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.
Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.
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Someone please help me out!!!!!
How do you think the body processes monosaccharides differently than polysaccharides? Would they take the same amount of time to digest and harvest energy?
Answer:
Polysaccharides from cell walls make up the fiber humans eat, while monosaccharides provide the sweetness in foods. As humans eat, chewing breaks down polysaccharides into smaller particles that eventually, through digestion, yield up the simple monosaccharides that can pass into the bloodstream.
Explanation:
can someone quickly answer this i need to finish so many other things lol
Explanation:
A eukaryotic cell contains membrane-bound organelles such as a nucleus, mitochondria, and an endoplasmic reticulum. Organisms based on the eukaryotic cell include protozoa, fungi, plants, and animals. These organisms are grouped into the biological domain Eukaryota.
Any organism which has a closed membrane for a nucleas is a eukaryotic cell.
(organisms who dont have a nuclear memebrane is called prokaryotic cell)
We have eukaryotic cells as we have nuclear membrane but a bactaria(a prokaryotic cell) doesnt have a nuclear memebrane and all of its nuclear substances are floating insdie it getting jumbled up.
James Watson and Francis Crick first discovered the structure of the DNA molecule in 1953. They discovered that the molecule has a shape specific to just that molecule. That shape can be best described as-
Answer:
A double helix
Explanation:
ln certain species of plant, one purebred
variety has hairy leaves and another pure-
bred variety has smooth leaves. A cross of
the two varieties produces offspring that all
have smooth leaves. Predict the ratio of
phenotypes in the F2, generation.
Answer:
If crossing plants with hairy leaves and smooth leaves produces plants with smooth leaves in F1, the phenotypic ratio of plants with smooth leaves:hairy leaves in F2 will be 3:1.
Explanation:
It is assumed that, if the first descendants of this cross presented smooth leaves, this represents the dominant characteristic.
If in the crossing of two plants, the parental generation consists of two pure plants for the characteristic aspect of the leaf, one with hairy leaves (s) and another with smooth leaves (S), the first filial generation (F1) will be of hybrid plants with a phenotype of smooth leaves (Ss), which represents the dominant characteristic.
Parental Generation:
Smooth leaves SSHairy leaves ssPunnett Square F1
Alleles S S
s Ss Ss
s Ss Ss
F1 : 100% plants with smooth leaves Ss
The second filial generation (F2) results from the crossing of F1 individuals, so:
Punnett Square F2
Alleles S s
S SS Ss
s Ss ss
The result of the offspring in F2 is:
Genotype
Pure smooth leaves SS 25%Smooth hybrid leaves Ss (heterozygous) : 50%Pure hairy leaves ss: 25%Genotipic ratio: pure smooth leaves:hybrid:pure hairy leaves 1:3:1
Phenotype
Smooth leaves SS + Ss: 75%Hairy leaves ss: 25%So the phenotypic ratio of smooth leaves: hairy leaves will be 3:1.
Leaves are composed of vascular tissue that brings water in so that ground tissue can conduct photosynthesis. Based on this information, what level of organization describes leaves?
Tissue
Tissue
Organ
Organ
Organ system
Organ system
Organism
Organism
Answer:
Organism
Explanation:
All the things listed are the characters of an organism
Which of the following characteristics apply mainly to invertebrates? (Choose all that
apply.)
A.) many different body plans that display all types of symmetry
b.) backbone and inner skeletal structure
c.)lack of skeletal structure in their bodies
d.)limited to no development of organ systems
Answer:
c and d
Explanation:
because they are cold blooded n have no back bone
The characteristics that mainly apply to invertebrates are as follows:
Lack of skeletal structure in their bodies.Limited to no development of organ systems.Many different body plans display all types of symmetry.Thus, the correct options are A, C, and D.
What are Invertebrates?Invertebrates may be defined as those forms of living organisms that lack a backbone, spinal cord, and central nervous system.
Invertebrates generally have bilateral or radial symmetry. They can be asymmetrical as well. They only have either incomplete or complete digestive systems. Invertebrates completely lack a skeletal system.
Therefore, the correct options for this question are A, C, and D.
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How do the three types of distribution differ from one another?
Explanation:
direct channel allows the consumer to make purchases from the manufacturer while an indirect channel allows the consumer to buy the goods from a wholesaler or retailer. Indirect channels are typical for goods that are sold in traditional brick-and-mortar stores.
which structure makes proteins using instructions from the nucleus
Answer:
ribosomes
Explanation:
Ribosomes are small particles of RNA and protein found throughout the cytoplasm. Proteins are assembled on ribosomes. The nucleus gives coded instructions to the ribosomes, so they know what proteins to build.
3. What does the heading
represent?
Hey I just want to give back to the community for helping me up to expert. U dont have to answer the question but its hear for fun. Why do people shrink when the get older?
Answer:
Reynolds Institute on Aging, says that we can shrink for several different reasons. “Older adults can get shorter because the cartilage between their joints gets worn out and osteoporosis causes the spinal column to become shorter,” he says. “Adults can also lose lean muscle mass but gain fat
Explanation:
thx for points!!!!!!!!!!!!!!
Answer:
“Older adults can get shorter because the cartilage between their joints gets worn out and osteoporosis causes the spinal column to become shorter,” he says. “Adults can also lose lean muscle mass but gain fat. This is a condition called sarcopenia.”
2/3 divided by 1/6
Answer:
4
Explanation:
Sea floor spreading happens in which plate boundaries?
Answer:
Divergent plate boundaries.
Explanation:
"As upwelling of magma continues, the plates continue to diverge, a process known as seafloor spreading. Samples collected from the ocean floor show that the age of oceanic crust increases with distance from the spreading centre".
Please mark as brainliest! Thank you <3
Part D)
Think about pushing two boxes of different weights across the floor-one box is a lot heavier than the other box. How will the amount of force change as you push each box? Explain how this relates to energy expenditure of two people-one person who's heavler than the other.
This is on plato and edmentrum. :)
Answer:
More force is needed to push the heavier box. Likewise, people who weigh more use more energy to move their bodies than people who weigh less.
Explanation:
copied directly from edmentum/plato
Answer:
More force is needed to push the heavier box. Likewise, people who weigh more use more energy to move their bodies than people who weigh less.
Explanation:
Please help me!!please
Answer:
C.
Explanation:
:DDD
Density independent factors are
Answer:
Density-independent factor, also called limiting factor, in ecology, any force that affects the size of a population of living things regardless of the density of the population (the number of individuals per unit area).
Explanation:
Biology books used to describe interphase as the “resting phase.” Based on what we know now, what was wrong with this term?
Answer: because in the interphase the cell still goes through changes(growth, replication of its DNA), they are just not visible by microscope. Therefore, the cell isn't resting.
Which environmental policy must consider the expensive startup costs associated with building machines that harvest energy from clean sources? reducing air pollution regulating deforestation introducing new farming methods protecting ocean reefs
Answer:
i think its A
Explanation:
Answer:
A. reducing air pollution
Explanation:
edge 2022
What happens to the atoms in a scoop of ice cream as it melts? They decrease in temperature. They lose energy. They vibrate faster. They are held tightly in a fixed position.
Answer:
they vibrate faster
Explanation:
Answer:
They Vibrate Faster
Explanation:
Did it on Edge 2020
-Its C
what molecules form proteins when linked together with covalent bonds
Answer: Amino Acids
Explanation:
Proteins are formed when the organic Amino acids are linked together with covalent bonds. This means that proteins can be broken down into amino acids which is what the bond does when it processes proteins.
Amino acids are principally made up of Carbon, Hydrogen, Oxygen and Nitrogen and are classified into three groups namely: Essential amino acids , Nonessential amino acids and Conditional amino acids.
Adaptations that help an organism survive appear quickly. True or False? And why
Answer:
false
Explanation:
is not worth it to do that
According to the theory of natural selection, features that may be passed down help animals adapt to their surroundings more successfully than their kin.
What condition that make organism adaptive?Adaptations are passable traits that improve an organism's capacity to endure and procreate in a given environment. An organism can manage in harsh settings, locate food and water, and protect itself by adapting.
This is the outcome of a process called natural selection. A species' nature gradually changes as a result of natural selection in order for it to fit into the niche.
If a species becomes extraordinarily well adapted to its habitat and the environment does not change, it can survive for a very long time before going extinct.
Therefore, it is false that, Adaptations that help an organism survive appear quickly.
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What is the role of adenosine triphosphate (ATP) within a cell?
A) Release carbon dioxide
B) Biological molecule that stores energy
C) Use glucose
D) Controls chemical reactions
Answer:
Its B. Biological molecule that stores energy
If Jamal does not sleep for four days straight, he will most likely experience __(blank)__. a) jet lag
b) psychopathic behavior
c) hallucinations
d) REM
Answer:
b? ig I mean u could experiance all, but this is an 8th grader talking what do i know?
Explanation:
how does the nervous system send messages to the other parts of the body
Answer:
by signals that the nervous system sends to the brain
Explanation:
Men who are kidnapped for human trafficking are usually held under debt bondage or _____.
soldiering
peonage
sex slavery
sex tourism
Answer:
It is Soldering not peonage
Explanation:
Peonage is what they do for Men not young boys.
Men who are kidnapped for human trafficking are usually held under debt bondage or peonage. Option B. This is further explained below.
What is peonage?Generally, Men who are kidnapped for human trafficking are frequently held hostage.
In conclusion, peonage defines Men who are kidnapped for human trafficking.
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