Answer:
See the options and the answer below
Explanation:
The available options to the question are:
Your statement is a valid scientific theory. Your statement uses the word "theory" in a non-scientific, colloquial way. Your statement is a hypothesis rather than a scientific theory. Your statement is not a theory but a fact.The correct answer would be that:
the statement uses the word 'theory' in a non-scientific, colloquial way. the statement is a hypothesis rather than a scientific theory.A hypothesis is a generalized statement with little or no experimental test. When a hypothesis is tested using a suitable experiment (s), it can either become valid or invalid. In order words, hypotheses are falsifiable. A theory on the other hand is a hypothesis that has been tested several times by independent researchers and found to be true.
In the illustration, the statement made concerning the squirrels is based purely on guess and not on fact. The use of the word 'theory' in the statement is totally unscientific. Only suitable experiments can prove or disprove the statement.
The correct options are 2 and 3.
Part A
Why are diseases such as AIDS, which reduce population density, undermining the ability of
developing countries to make the transition to more modern, industrialized societies?
Answer:
other than AIDS there is STDS
Explanation:
sexual transmitted disease
what would happen if organisms did not have enzymes?
Explain (in one or two lines) the function of the followings:
(a) Promoter
(b) tRNA
(c) Exons
Answer:
In genetics, a promoter is a sequence of DNA to which proteins bind that initiate transcription of a single RNA from the DNA downstream of it. This RNA may encode a protein, or can have a function in and of itself, such as tRNA, mRNA, or rRNA. Transfer ribonucleic acid (tRNA) is a type of RNA molecule that helps decode a messenger RNA (mRNA) sequence into a protein. tRNAs function at specific sites in the ribosome during translation, which is a process that synthesizes a protein from an mRNA molecule. Proteins are built from smaller units called. An exon is the portion of a gene that codes for amino acids. In the cells of plants and animals, most gene sequences are broken up by one or more DNA sequences called introns.
Which of these is a compound?
Answer:
NaCl
Explanation:
It's a compound.
Answer:
NaCl
Explanation:
because it is more than one element.
What happens to a gas when heat is removed?
A. The particles have more kinetic energy.
B. The particles move faster and become less compact.
C. The particles move slower until the matter changes into a. liquid.
D. The particles reduce their size by at least half.
What is the VOLUME of a cube that measures 2 cm X 4 cm X 3
cm?
O 8 cm3
O 11 cm3
24 cm3
Answer:
The volume is 24 cubic centimeters.
Explanation:
Volume = Length x Width x Height
Which of the following is the Earth's largest reservoir of carbon dioxide?
atmosphere
icebergs
oceans
O soil
Hydrogen bonds are the weakest type of bond yet they are valable in biology because a large number of
hydrogen bonds together in one molecule actually make the molecule stong.
A.True
B.False
Answer:
true
Explanation:
The process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane-bound carrier proteins is called The process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane-bound carrier proteins is called
Answer:
Facilitated diffusion
Explanation
Generally when molecules undergo passive diffusion along their concentration gradient,and aided by the cell membrane which provide hydrophillic areas for the molecules to pass through,this is called facilitate the diffusion.The membrane would be impermeable to these molecules without the proteins,
It is a special transport mechanism for large molecular substances like glucose and Amino acids and ions e.g Na+ and K+.Therefore facilitated mean to aid,thus the membrane proteins aids or help molecules to pass through.
Channel protein and carrier proteins are the two type of protein involved in the transport.They are specific for each molecules,and would only allow the passage of one molecule or ion through.
Energy is not needed for this to occur place the molecules of glucose are moving along the concentration gradient.
Specifically channel proteins are fixed in shape,some are gated.They are water filled pores Carrier proteins are flexible and adjust their shape to the two media for transport.Thus if the concentration of substances to be transported i s higher on on side A of the cell membrane proteins,the carrier protein will be open to that side to convey the molecules across.
The amount of molecules transported depend on the amount of the carries and channel protein available.
Which is NOT a prokaryote?
( WILL REWARD BRAINLIEST)
A. Archaebacteria
B. Fungi
C. Halophiles
D. Eubacteria
Answer:
B, fungi!
Explanation:
Fungi is a eukaryote.
Answer:
Fungi
Explanation:
Because it's eukaryote contain true nucleus.
Mitochondria differ from chloroplasts in that Group of answer choices mitochondria convert solar energy to chemical energy whereas chloroplasts convert one form of chemical energy to another mitochondria contain three different membrane-bound compartments, whereas chloroplasts contain two mitochondria contain membrane folds called cristae, whereas chloroplasts contain vesicles in stacks called grana mitochondria are not found in plants, whereas chloroplasts are not found in animals
Answer:
mitochondria contain membrane folds called cristae, whereas chloroplasts contain vesicles in stacks called grana
Explanation:
Mitochondria are composed of two membranes (i.e., the inner and outer membranes), which are separated by the intermembrane space. The inner mitochondrial membrane is composed of several folds that form the cristae, which extend into the mitochondrial matrix. On the other hand, in chloroplasts, the inner membrane consists of interconnected stacks of sacs named thylakoids, whose arrangement is known as grana.
You catch, tag, and release 35 fish back into a pond. Then, you catch 70 more fish, 12 of which have tags on them. What is the best estimate of the number of fish in the pond?
a.
100
b.
150
c.
142
d.
204
Answer:
D. 204
Explanation:
proportion : 12/70 = 35/x
70(35)=12x
2450=12x
204.166667=x and round it to make it 204.
The best estimate of the number of fish in the pond is 204. Thus, option D is correct.
Calculation:
proportion : 12/70 = 35/x
70(35)=12x
2450=12x
204.166667=x and round it to make it 204.
What is average speed?Average speed has been defined as the total distance travelled in total time taken it means that we can calculate the average speed obtained by an object .
Mathematically,
Average Speed = Total distance travelled/Total time taken
It's S.I unit is meter/second
Average speed is a scalar quantity it means that it has only magnitude not direction.
Ecosystem has been the branch of science that deals with the study of relationship between living organisms and natural phenomena. Ecosystem has the system in which both living as well as nonliving organisms are present in a particular location.
Green plants contain chlorophyll and they prepare there own food in the presence of sunlight and the process is known as photosynthesis. In the process of photosynthesis light energy converted into chemical energy.
Therefore, The best estimate of the number of fish in the pond is 204. Thus, option D is correct.
Calculation:
proportion : 12/70 = 35/x
70(35)=12x
2450=12x
204.166667=x and round it to make it 204.
Learn more about average speed here:
https://brainly.com/question/12322912
#SPJ2
The diagram to the right represents the lytic cycle.
What is occurring at step C?
O The pieces made in replication are
assembled to complete the new virus particles
O The virus attaches to the host cell.
O The host's DNA is disassembled and the
virus takes over the cell's metabolic activity.
O The new viral nucleic acid and viral proteins
are replicated.
O Lysis occurs, killing the cell.
This is on edg btw. Please help I’ve been stuck for like 15 minutes and there’s a time cap.
Answer: D
“ the new viral nucleic acid and viral proteins are replicated “
Explanation:
Answer:
D. The new viral nucleic acid and viral proteins are replicated.
Explanation:
I took the assignment. I hope this helps!
What step of the scientific method immediately follows "state the problem"?
A. Draw conclusions.
B. Make observations.
C. Form a hypothesis.
D. Design an experiment.
Answer:
c
Explanation:
before you can do a, c, or d you must form a hypothesis to be tested.
BLANK are fatty acid derivatives that function in inflammatory and allergic reactions, blood clotting, and smooth muscle contractions.
The answer is lipids
what is scientific investigation?.
Answer:
It involves careful observation, applying rigorous skepticism about what is observed, given that cognitive assumptions can distort how one interprets the observation.
Explanation:
- google wikipiedia
What is one possible reason black babies are more likely than white babies to be born to small or too early? URGENT PLEASE HURRY
Babies can be born premature due to the mother smoking or drinking. Another reason could be over stressing. This has nothing to do with race, but it could possibly be a reason because black women are more likely to? Not super sure on this one, hope it helped.
SpongeBob loves to garden and wants to grow lots of pink flowers for his pal Sandy. He bought a special Flower Power fertilizer to see if it will help plants produce more flowers. He plants two plants of the same size in separate containers with the same amount of potting soil. The places one plant in a sunny window and waters it every day giving it fertilizer each day. He places the other plant on a shelf in a closet and waters it every day but does not give it any fertilizer. The plant in the sunny window ended up producing many more flowers than did the plant in the closet. Should SpongeBob conclude that giving Flower Power fertilizer to plants will cause the plant to produce more flowers
Answer:
No
Explanation:
It would be wrong for SpongeBob to conclude that giving flower power fertilizer helps the plant to produce more flowers based on the experimental design.
There are fundamental flaws in the experimental design that could make the conclusion to be wrong:
The two plants were not subjected to the same conditionsThe sample size is too smallIn order to investigate if the flower power fertilizer has the capacity to help the plant to produce more flowers, the two plants used should have been subjected to the same conditions barring only the fertilization application. Whatever difference that is observed in the number of flowers produced can then be attributed to the fertilizer.
Also, the number of plants for each group (with and without fertilizer) is too small to arrive at a reliable conclusion. In scientific investigations, replicating measurements increases the statistical power of the resulting data and raises the reliability of the conclusion.
What is another word that can be used to describe homeostasis?
stable
complete
correct
equal
Answer:
stable
Explanation:
Another word that can be used to describe homeostasis is - stable
HomeostasisIt is an organism's process of maintaining a stable internal environment suitable for sustaining life. It describes the internal stability of an organism.
Most of the homeostasis process is maintained by the cell membrane by allowing what or what not to enter or exit in the cell, however, the complete cell takes part in the homeostasis.
Learn more about Homeostasis:
https://brainly.com/question/1046675
The smooth ER helps build which biomolecules?
Answer:
read explanation
Explanation:
This makes sense because this portion of the endoplasmic reticulum builds lipids, or fats, rather than proteins, and thus doesn't need ribosomes. These lipids may include fatty acids, phospholipids and cholesterol molecules. if incorrect dont hate on me please
WHAT IS THE SEQUENCE OF A-T-G-G-C-A,
Answer:
It is the nucleoid and amino acid sequence
Explanation:
How many extrinsic eye muscles control each eye in a cow?
O 12
06
O 5
O4
Answer:
Cows have 4 extrinsic eye muscles that control each eye in a cow. They can look up, down, left, and right, but they can't roll their eyes as you can.
Differentiate external and internal environment factors in influencing Gene expression
Answer Internal and external environmental factors, like gender and temperature, influence gene expression. ... Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.
Explanation:
You please help me with science and I will give you bring list
Answer:
A
Explanation:
Protons are positively charged so A is right
We know the rest are wrong because neutrons have no charge and electrons are negatively charged.
Answer:
The answer is A.
Explanation:
Lets look at the charges of each part and see which one lines up.
A) The protons in an atom have a positive charge.
B) The nucleus contains the protons and neutrons. Since the neutrons have no charge and the protons have a positive charge, the overall charge of the nucleus is positive.
C) Electrons have a negative charge.
D) The neutrons have a neutral charge meaning they do not have a positive or negative charge.
The only answer that lines up with the choices is A.
Is DNP and cyanide an inhibitor of cellular respiration?
Answer: Yes.
Explanation:
DNP and cyanide are both cellular respiration inhibitor.
Cyanide is a neurotoxin that can prevent cellular respiration by it's inactivation activity on mitochondria enzymes called cytochrome oxidase.
DNP (2,4-Dinitrophenol is a chemical that inhibit cellular respiration. It help to shuttle proton across cell membranes of living cells by spreading the proton along along the mitochondria and collapsing the force that produced energy for the cell activities.
Describe the path of a signal from a neuron's dendrite to a second neuron's dendrite.
Answer:
Dendrite are short hair like structures originating the periphery of the cytoplasm. Dendrites are either in close contact with other neurons or the stimulus receptor cells.
I would attach a diagram with this note I hope it helps.
Heidi is a chocolate lover and eats chocolate daily. She has a bad break-out and her friend told her eating chocolate causes pimples. Heidi continues to eat chocolate every day for 2 weeks and counts the number of pimples she has on her face. The following 2 weeks she doesn't eat any chocolate and counts the number of pimples on her face
A. Independent Variable=
B. Dependent Variable=
C. Control=
Answer:
Independent variable
Explanation:
Because the pimples depends on the body hormones, and not just chocolate
Are individual organelles (cell structures) living? Defend your answer.
Answer:
the cell structure is living
Explanation:
CELL! cells are living
Pollen grains are formed in the anther of the flower by which sequence of events?Haploid microspore mother cells divide by mitosis to form four diploid microspores. Each microspore develops into a pollen grain by meiosis. Diploid microspore mother cells divide by meiosis to form four haploid microspores. Each microspore develops into a pollen grain by mitosis. Diploid megaspore mother cells divide by mitosis to form four diploid megaspores. Each megaspore develops into a pollen gram by meiosis. Diploid microspore mother cells divide by mitosis to form four haploid microspores. Each microspore develops into a pollen grain by meiosis. Haploid microspore mother cells divide by meiosis to form four diploid microspores. Each microspore develops into a pollen grain by mitosis.
Answer:
Diploid microspore mother cells divide by meiosis to form four haploid microspores. Each microspore develops into a pollen grain by mitosis.
Explanation:
Pollen grains contain the male gametes of a sexually reproducing plant. Pollen grains are haploid cells in nature produced by the meiotic division of microspore mother cells (located in the anther). The meiosis of these diploid (2n) microspore mother cells give rise to four haploid microspores. This process in plants is called microsporogenesis.
Each haploid microspore (n) develops into pollen grain called microgametophye (bearing male gamete) via mitotic division. During the pollen grain formation, a wall is formed around the microspores.
which of the following is not a reactant needed for photosynthesis
A. sunlight
B. oxygen
C. carbon dioxide
D. water
Answer:
I think it B
Explanation:
By definition of photosynthesis, oxygen is not a reactant needed for photosynthesis.
First, you have to know that photosynthesis is a metabolic process carried out by certain cells of autotrophic organisms, that is, those that have the capacity to make their own food, such as plants.
With this process, plants capture the energy of sunlight and transform it into chemical energy, to produce organic matter.
Photosynthesis takes place in 2 stages:
In the first stage the plants absorb water from the soil through the roots. Through their stems they transport it to their leaves. In these it meets the sunlight captured by chlorophyll, which breaks the water molecule, separating hydrogen (H) from oxygen (O2).The other stage is capturing carbon dioxide. This provides the carbon and oxygen atoms that, together with hydrogen and stored energy, will form the glucose molecule, from which compounds are produced that are the basis of food for plants and other living beings.Then, sunlight, carbon dioxide and water are needed for the photosyntesis, while oxygen is released to the environment.
This is sunlight, carbon dioxide and water are reactants needed for photosyntesis, and oxygen is not a reactant needed.
Learn more:
https://brainly.com/question/13523854?referrer=searchResultshttps://brainly.com/question/13523849?referrer=searchResultshttps://brainly.com/question/873199?referrer=searchResults