Answer:
3
Explanation:
What material was used to make shelters in the Stone Age?
Mammmoth bones
Stone
Animal hide
Answer:
Stone
Explanation:
These houses are more like our houses than any others in the Stone Age. They had foundations and they were built of wood and wattle and daub (a mixture of manure, clay, mud and hay stuck to sticks). They were sometimes made of stones. The roofs were made of straw.
Allie was in the park playing on the equipment. She noticed that on the highest slide, she slides down
A)
without friction.
B)
with the slowest speed.
with the greatest speed.
D)
at about the same speed as the shortest slide.
In which season did the rabbit population increase the least
Answer:
Winter
Explanation:
Answer:
During the winter season
*Question 23
Nerve impulses leading to the brain carry information about cool temperatures on the skin. The nerve fibers sending these signals will most likely belong to which division of the nervous system?
A) Somatic nervous system.
B) Parasympathetic division
C) Sympathetic division
D) Sensory (afferent) division
the answer is sensory (afferent) division
which process is needed for evolution to occur? PLEASSE HELPPP THIS IS A BIG GRADE
Answer: D. Genetic mutation
Explanation:
For evolution to occur, there must be a genetic mutation in the genome of an organism such that a new allele is formed.
If this mutation occurred in the sperm and/or the ovum, the mutation will then be passed on through reproduction to the next generation. This leads to more of the subsequent generations having that mutation thereby leading to evolution.
If glucose is metabolized under completely anaerobic conditions, pyruvate ( Please explain why each answer is wrong or right.)
a. immediately enters the Krebs cycle.
b. is converted by fermentation to lactate or CO2 and ethanol.
c. is converted back to fructose until the concentration of oxygen increases.
d. is converted to NADH.
Answer:
B.
Explanation:
A is wrong because pyruvate would enter the Krebs cycle under aerobic condition (when oxygen is present). Hence the name aerobic cellular respiration
C. I do not really too much about fructose or the concentration of oxygen, but I can assure that this answer choice is not correct.
D is wrong because NADH would be converted from NADP+. Either with oxidation or reduction, and this helps to keep this process going.
B is correct because fermentation is another word for anaerobic cellular respiration. The process takes place with the absence of oxygen. It either goes through Alcoholic or lactic acid fermentation.
I hope this helps!
what products are made from the process of photosynthesis
Answer: glucose and oxygen
Explanation:
The formula for photosynthesis is:
Carbon dioxide+water-->glucose+oxygen
Anything on the right of the arrow is the products so, it is glucose and oxygen.
Hope this helps :)
Answer:
glucose and oxygen
Explanation:
plants need carbon dioxide that human and animal release in order to manufacture food(photosinthesize)
in return,they give is oxygen and glucose from the food it produces
Below is the ORIGINAL stretch of DNA, followed by DNA which has a MUTATION. Will this mutation likely have a bad consequence for the organism? Why?
Original: GCU ACC AGG
MUTATED: GCU ACT AGG
This mutation likely have a bad consequence for the organism - No, because the mutation will not code for a different amino acid.
Amino acid sequences are formed by the translation and transcription from DNA sequence to mRNA and finally amino acid sequences.
Differences in amino acids chains can lead to differences in a protein (in shape and function).the protein may not be functional if the amino acid sequence is changed.It could lead to positive, neutral, or negative changes.In the given case the change in mutated from the original is ACC to ACTBoth ACC to ACT codes for glutamic acid.Thus, this mutation will not change the amino acid so the answer will be No.
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describe how carbon dioxide is produced by respiring muscle cells reaches the alveolar cavitiesin mammalian lungs
Answer:
Hope this helps:
The carbon (iv) oxide which has been produced by the respiring muscle tissue is diffused into the bloodstream in the form of bicarbonates, a process facilitated by an enzyme called carbonic anhydrase. The carbon (iv) oxide is then carried to the lungs.
Explanation:
Which of the following foods have fiber in them?
Your answer:
Peanuts
Granola
Bananas
All of the above.
Answer:
All of the above.
Explanation:
Bananas, peanuts, and granola are all great sources of fiber.
Hope this helps! :)
What are the five human impacts on the environment? (I would prefer them in point form, but i understand if you cant do that
Answer:
1. pollution
2.climate change
3. misuse of natural resources
4. erosion
5.loss of biodiversity
Explanation:
Answer:
overpopulation, pollution, burning fossil fuels, and deforestation.
Explanation:
how many bones has a crocodile?
A crocodile has 250 bones.
Answer:
The average crocodile has 250 bones excluding skull and armor
Explanation:
I searched it up on GOOOGLEE
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Answer:A
Explanation:
Trust me bro
3. The presence of Malaria in many countries has been eradicated and even in parts of Africa, the incidence of Malaria has been reduced substantially. Without endemic malaria from Africa, the sickle cell mutation is purely disadvantageous. What do you think will happen to the percentage of people carrying the Sickle Cell gene over time under the pressures of natural selection
Answer:
The percentage of people carrying sickle cell gene increases.
Explanation:
People carrying the Sickle Cell gene have low chance of Malaria because the sickle cell enables the body to detoxify abnormal red blood cells from the body. When the malarial parasite attacks on the cells of the body, the molecular machinery for cleaning up the waste is already present in the body. Those places where malaria is common, the people having sickle cell because the sickle cell show resistance against malarial disease.
HELP WILL GIVE BRAINLIEST
Answer:
What are you talking about?
Explanation:
What
All the different populations living in the same habitat or ecosystem make up _____ A.biodiversity
B.ecosystem diversity
C.genetic diversity
D.species diversity
Answer:
D.species diversity
Explanation:
its D because biodiversity,includes to all the many plants, animals, fungi, and microorganisms. And includes the many variety of ecosystems what's found on Earth. Ecosystem diversity, describes all of the different type of habitats around the world.
Which climate is best for supporting both plant and animal life? A.Tropical Rainforest B. Tundra C. Temperate Deciduous forest D. Desert E. Savanna F. Taiga
Deciduous forests, it holds both plant life and animals that thrives extremly well.
What is the name of the structures at the end of the bronchioles where gases are
exchanged?
Olarynx
Oalveoli
O trachea
Oepiglottis
Answer:
Alveoli
Explanation:
You are a botanist hired in the future to make a distant planet, Xyloph, habitable for human life. Your job is to help seed the planet with plant life by working with the terraforming team. All four major kinds of plants will be introduced into this new world. You are to help familiarize the terraforming team with the four different kinds of plants on earth. In three well developed paragraphs, describe each of the four major plant groups (seedless vascular, nonvascular, angiosperms, and gymnosperms). Your description should include, but not be limited to, the following: Description of general physical features and characteristics of each plant group. Discussion of living conditions where each plant group survives best. Explanation of specific abiotic conditions necessary for the success of that group, when applicable.
Answer:
A series of missions to the moons of Jupiter and Saturn has revealed their potential to harbour life. Nina Notman looks to the skies
After a series of mission failures, July 1965 saw the first successful flybys of Mars. The US Mariner 4 became the first spacecraft to take close up pictures of another planet, beaming 22 images of the impact-cratered Martian surface back to Earth. Since then, more than 20 successful missions have explored the red plant’s atmosphere and surface.
Thanks to the images and data collected– and by telescopes, both on earth and in space – we now know that billions of years ago, Mars had the three critical ingredients for life. It had an abundance of the chemical building blocks, liquid water on its surface and an energy source (volcanic activity) to power the chemical reactions that make life possible (on Earth that energy source is the sun). Today, the inhospitable surface of Mars is thought to be unsuitable for life, but the possibility of life existing deep beneath its frozen surface hasn’t been ruled out. To date though, no evidence of life – ancient or otherwise – has been found. Mars being habitable, it turns out, doesn’t mean it actually has a habitat.
Source: NASA/JPL-Caltech/MSSS
Mars has all the ingredients for life – water, chemicals and energy – but no signs of living things yet
The search for Martian life is ongoing, with a further three missions to Mars planned to launch over the next few years. Longer-term, a number of space agencies are also aiming to collect samples from Mars and return them to Earth for more in-depth analysis. And the search for signs of extraterrestrial life is stretching to the depths of our solar system and beyond.
3. A branched diagram showing relationships between organisms is a/an– a. amino acid sequence. b. fossil record. c. cladogram. d. DNA sequence.
Answer: your answer would be B
Explanation:
A branched diagram showing relationships between organisms is a cladogram. The correct option is c.
What are the uses of cladogram?An evolutionary tree that depicts the relationships between species' ancestors is called a cladogram.
In the past, cladograms were created using similarities among species' phenotypic or physical characteristics. Today, cladograms can also be created using similarities among organisms' DNA sequences.
A cladogram employs lines that diverge and then converge at a clade, a collection of creatures with a recent common ancestor.
Cladograms come in a variety of shapes, but they all contain lines that diverge from other lines. It is possible to follow the lines back to where they split off.
Cladograms provide a framework for comprehending the rate of evolution of groupings of animals as well as the relationship between their evolutionary history and the planet's changing climate and geography.
Thus, the correct option is c.
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What are the possible genotypes for a tall plant
The smaller a population of organisms of a particular species, the
A.
more likely one of the organisms is to adapt to a changing environment
B.
more likely a mutation is to arise
C.
less likely the species will be able to survive in a changing environment
D.
less likely natural selection is to affect the population
Answer:
The correct answer is - D. less likely natural selection is to affect the population
Explanation:
The larger population of a species tends to produce more mutant individuals per generation than a smaller population per generation. In a larger population, it assists to get more genotypes and gets optimal genotypes quicker than smaller populations.
In larger populations, the process of natural selection is more effective and for the smaller population Second, natural selection is less likely to affect the population which leads to less genetic diversity or change in order to survive due to stochastic sampling error as some allele loss in random selection.
factors that affect rate of erosion
Answer:
farm management, rainfall, climate, soil type, soil cover, landscape, type of wave, crops, rock strength and position of coast.
Explanation:
Erosion can be defined as a geological process which typically involves the wearing out of earthen (soil) materials and the transportation of these materials by natural forces like water, wind, etc. Soil erosion is greatest when the soil is steep.
The steepness of a body such as river or stream refers to the downward slope or gradient of the body of water.
Generally, the steepness of a body affects the rate at which other materials would flow or move around. Thus, the steeper a river or stream, the greater would be its rate of erosion.
Other factors that affect the rate of erosion in an area include the following; farm management, rainfall, climate, soil type, soil cover, landscape, type of wave, crops, rock strength and position of coast.
CO2 + H20 + light energy --> C6H12O6 + O2
In the chemical reaction above, what does CoH12O6represent?
Answer:
In the chemical reaction , [tex]C_6H_1_2O_6[/tex] represent glucose.
Explanation:
This chemical reaction is used in the process of photosynthesis . A plant absorbs water, carbon dioxide, and light energy when producing glucose and oxygen during photosynthesis. Since glucose is required for cellular respiration, it is extremely essential. The chemical energy in the glucose molecule is transformed into a shape that the plant can use for growth and reproduction during cellular respiration.
Hence , the answer of the given question is Glucose.
List some of the diseases mentioned that have plagued humans from Egyptian nobles to now.
Answer: Many of the diseases which cause problems in today's society afflicted Egyptian populations. These include tuberculosis, malaria and schistosomiasis.
Explanation:
Please answer please I need help thank you
Algae provides more energy to the Box Turtle population.
If you see the bottom of the chain, Algae, whether the turtles eat it or not, also provides energy/food/resource for other forms of energy the turtles can consume, it's the base of the chain.
The answer is not aquatic insects because they do not supply as energy to as many sources as algae.
Hope this helped!
Compare and contrast point mutations and chromosomal mutations. Which part of the organism's DNA is affected as a result of each?
Answer:
In point mutation,the gene is affected however in chromosomal mutations,there is change in the structure or number of the chromosomes
The primary distinction among point mutation and chromosomal mutation is, the point mutation is a small mutation in which basically a single base pair of the either DNA or RNA encoding changes, whereas chromosomal mutation is a large-scale mutation in which the chromosome structure changes.
What is mutation?A mutation is an alteration in an organism's DNA sequence. Mutations can take place as a consequence of mistakes in DNA replication during cell division, mutagen exposure, or viral infection.
Mutagens are environmental factors that results in mutations. Mutagens can be either radiation, chemicals, or infectious agents.
In living organisms, there are two kinds of genetic mutations namely point mutation and chromosomal mutation.
The nucleotide sequences are usually altered in both cases. As a result, all these types of mutations can result in fatal diseases.
The main difference between point mutation and chromosomal mutation is that point mutation is a small-scale mutation that changes a single base pair of the DNA or RNA encoding, whereas chromosomal mutation is a large-scale mutation that changes the chromosome structure.
Thus, this is the comparison between the types of mutation.
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question 10
Norepinephrine is produced from
A. tyrosine
B. serotonin
C. epinephrine
D. damfino
E. tryptophan
F. histidine
Key Term Matching
1. accessory organs
2. fundus
3. uvula
4. villi
5. large intestine
6. root
7. dentin
8. lamina propria
9. fauces
10. chyme
11. incisor
12. parietal cells
13. crown
14. stomach
15. cheeks
16. serosa
17. enamel
18. stratified squamous
19. gingivae
20. small intestine
21. pharynx
22. liver
23. molar
24. mucins
25. acinar cells
a. forms bulk of tooth
b. performs compaction
c. a cutting tooth villi
d. liquid food mixture in stomach
e. posterior opening of oral cavity
f. has three muscularis externa layers
g. portion of tooth above gum line
h. epithelium found in esophagus
i. are connected to GI tract by a duct
j. composed of loose connective tissue
k. dome-shaped stomach region
l. organ shared with respiratory system
m. substance harder than bone
n. exocrine part of pancreas
o. projection off of soft palate
p. in saliva to lubricate food
q. finger-like extensions of mucosa
r. portion of tooth below gum line
s. the gums
t. performs 90% of digestion and absorption
u. secretes bile
v. a grinding tooth
w. secrete HCI
x. outermost layer of GI tract wall
y. lateral walls of the oral cavity
what does NADP+ want to carry outside of the thylakoids?