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Body Systems and Organization

Answer:

Genetic Flow is the answer but there is more than one

Answer:

Nucleosomes in turn are wrapped into 30-nanometer fibers that form tightly packed chromatin. Histones prevent DNA from becoming tangled and protect it from DNA damage. In addition, histones play important roles in gene regulation and DNA replication. Without histones, unwound DNA in chromosomes would be very long.

Answer:

Qualitative observations are those that cannot really be counted or measured by empirical figures, but are rather described by the features they have such as their color or taste.

Quantitative observations can be measured and counted by empirical figures  i.e. numbers such as age and temperature. Number operations such as addition can be performed on them as well.

Qualitative observations.

Quantitative observations.

Answer:

Quantitative observation:

There are eight elephants over the age of six at the zoo.

It is 72 degrees  Fahrenheit outside.

Qualitative observation:-

The shirt is soft and red.

The river flows more quickly in the spring than in the summer.

Answer:

D: Nervous system

Hope this helps!

Answer:

Animal cell

Explanation:

Answer:

velocity increase pressure decreases

Answer:

b. elevation increases

hope this helps you☺️☺️

Answer:

Earth's mantle

Explanation:

Asthenosphere, zone of earth's mantle lying beneath the lithosphere and believed to be much hotter and more fluid than the lithosphere

Answer:

Bryophytes prevent soil erosion. They usually grow densely and hence act as soil binders. Mosses grow in dense strands forming mat or carpet like structure.

Explanation:

Answer:

Your hamstring and your back muscle keeps your posture straight.

Explanation:

Answer:

Hi, there the answer is

A.Increased crop growth

D. Increased demand for building construction

Hope this helps :)

Explanation:

Answer:

No, there are no organisms that will not fall into these categories

Explanation:

Living organisms interact with one another in their natural environment in order to ensure that energy needed for their metabolic activities is obtained. To do this, each organism plays different or specific roles. The roles that every organism must fall into are as follows:

- Producers are groups of organisms that have the ability to synthesize their own food using light (photosynthesis) or chemicals (chemosynthesis). Examples are green plants, algae, some bacteria etc.

- Consumers- These are organisms that lack the ability to synthesize their own food and hence depend on other organisms for their energy source. Consumers can either be herbivores (eat plants) or carnivores (eat flesh) etc. Examples are all animals etc.

- Decomposers- These are organism that have the ability to breakdown dead organisms into organic matter, thereby, adding nutrients back to the soil. Examples are fungi, bacteria, earthworm etc.

Based on this explanation above, no organism will not fall into any of these three categories. Some can even occupy two roles.

Answer:

Option 4, they are caused by UV radiation damage to thymines that are opposite each other on different DNA strands

Explanation:

Thymine dimer is formed on adjacent thymine and hence they lie next to each other on the same strand. They do not lie on strand that are opposite of  each other on different DNA strand.

Hence, option 4 is correct

Answer:

a. True

Explanation:

Ribosomes are ribonucleoprotein complexes composed of RNA and proteins, which have two main roles 1-decode the message of the messenger RNA (mRNA) molecule and the formation of peptide bonds in the protein. For this purpose, each triplet of nucleotide bases or 'codon' in the mRNA sequence is used to assemble specific amino acids in the nascent polypeptide chain. Although different, both prokaryotic ribosomes and eukaryotic ribosomes are composed of two subunits: one small subunit that decodes the mRNA into a specific amino acid chain, and one large subunit that forms the peptide bonds in the polypeptide chain. Each ribosomal subunit is in turn composed of ribosomal RNAs and proteins. These ribosomal RNAs act as scaffolds by combining with proteins that assemble into ribosomes (i.e., small and large ribosome subunits).

Answer:

Why is vision considered to be a more effective sense in the terrestrial environment than in the aquatic environment?

Mostly its species bias. Our eyes are adapted to be more effective in a terrestrial environment during daylight. But sea creatures have far more impressive eye adaptations to seeing in the water where our eyes are less effective. The most amazing eyes across all species are the eyes of the octopus. In the water eyes don’t need to see color. Wasting valuable space on the retina for color receptors make it hard to see in the low light found in underwater environments. But the octopus’s eyes see color without having any color receptors. They do this by having lenses that act as a prism and separates light into its various colors. The octopus’s brain aligns the image scattered by color by where each color hits the retina. This allows it to see great in low light and also “see” colors. It uses this for camo to change its colors to blend in with its surroundings both to hunt prey and ide from predators. It can change colors instantaneously. The interesting thing about the octopus is it has no central brain. Its entire nervous system can act as individual brains allowing extreme ability to multitask. One of its eight limbs is thinking about what it will do while another is thinking both independently and with communication to the collective nervous system. reaction time of the octopus’s nervous system is unbelievable. We are very slow by comparison probably because a central brain is far less efficient when it comes to processing and reacting to stimuli. Anyway the question is about eyes so I will end my tangent there. The octopus eye system is probably the most advanced eye that exists. They even climb out of the water and demonstrate great visual acuity while out of the water. Our eyes are extremely limited when we are underwater.

Answer:

C: Hibernation to lower metabolism in the winter

Explanation:

Answer:

C is correct

Explanation:

Explanation:

Dissolving metals is a chemical property that takes place when water or strong acids react with metallic objects. Chemical forces pull metal atoms from the object, causing it to break apart and leave the atoms floating freely in solution. Solubility depends on the acids and metals involved. Lead and iron react easily, while platinum and gold are much harder to dissolve.

Answer:

The correct answer is - 3.3 g/L.

Explanation:

It is known that if endogenous metabolism is not important then,

µnet = µmax = 0.693/doubling time.

Given:

doubling time = 6.5 hr, therefore,

µmax = 0.693/6.5 = 0.1/h

Formula:

First, maximum dilution rate Dmax,

Dmax = µmax*[S0]/{Ks + [S0]}.........(1)

Steady-state cell concentration, X

X = Yx/s{[S0] - KsD/(meumax - D)..........(2)

Solution:

Yx/s = 0.33 g/g-substrate;

Ks = 12 x 10-3 g/L; [S0] = 10g/L,

puting value in (1)

Dmax = 0.1 * 10 / (12 x 10-3 + 10)

= 0.1/h.

Now it is given that operating D is 1/2 of Dmax, therefore,

D in our case will be = 0.05/h

concentration of protozoa cells from equation (2).

Therefore, X = 0.33*{10 - 12 x 10-3 * 0.05/(0.1 - 0.05)} = 3.3 g/L.

Answer:

I think its b. Competition would increase. Wildfire would increase the scarcity of resources, causing individuals to compete at higher rates.

Explanation:

not 100% sure tho

Wildfires can immediately impact competition in a forest ecosystem because wildfires would increase resource scarcity, causing individuals to compete at higher rates.

In addition to destroying native vegetation and killing many wild animals, a forest fire can also cause serious financial damage and even endanger the lives of people and domestic animals.

With this information, we can conclude that wildfires can immediately affect competition in a forest ecosystem because wildfires would increase resource scarcity, causing individuals to compete at higher rates.

Learn more about ecosystem in brainly.com/question/1673533

Answer:

Directional selection

Explanation:

This because directional selection is type selection in which a particular phenotype is choosen and favored among several other phenotypes which cause a shift in diversity of larger population of organisms causing the population to shift in over time in a direction towards the choosen phenotype.

Directional selection

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Answer:

Choice D

Explanation:

When you translate the RNA, you replace C’s with G’s (and vice versa) and A’s with U’s (also vice versa). So, you get GUU UUA CGC UAG. Then you read the codon chart to get your answer. Hope it helps :)

The sequence of the amino acids which is being produced when this RNA is translated is Val - Leu - Arg - Stop. Thus, the correct option is D.

Codon can be defined as the sequence of three consecutive nucleotides in the nucleic acids such as a DNA or RNA molecule which codes for a specific amino acid. Certain codons are responsible for the signal of the start or end of the translation process.

Codons are universal in nature throughout the different living organisms. There are about 64 different codons which codes for 20 standard amino acids in the cell. There are three stop codons in the genetic code which stop the process of translation of protein molecules including UAG, UAA, and UGA.

The sequence of the amino acids which can be produced when this RNA is translated 5'-CAA AAU GCG AUC-3' will be Val - Leu - Arg - Stop.

Therefore, the correct option is D.

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Answer:

False

Explanation:

Mutations are changes in the genetic (nucleotide) sequence of the genome of an organism. According to their effects, mutations can be divided into beneficial, neutral and detrimental for the fitness of the organism, i.e., its ability to survive and reproduce in a given environment. Moreover, mutations can also be classified according to the type of cell that suffers the mutation into 1-somatic mutations that occur in somatic cells and are not inherited, and 2-germinal mutations that occur in germinal cells (i.e., gametes) which can pass to the next generation. In regard to the question above, only those mutations that occur in the germline and are beneficial for the organism (in the environment in which it lives) are expected to become more common in a population.

Answer:

15

Explanation:

Since the law of conservation of mass applies to all the chemical reactions this will also end in 10+5 equalling 15 grams

Answer: coriolis effect

Explanation: because earth rotates as the air is moving, the winds in the northern hemisphere curve to the right and air in the southern hemisphere curves to the left.

Answer:

ribosome in the cytoplasm

Explanation:

The second step in making a protein occurs in the ribosome in the cytoplasm.

Answer: in DNA molecules, [A] = [T], and [C ] = [G]

Explanation:

Answer: A. Ultraviolet Radiation

The mutation rates in drosophila will most likely increase after exposure to ultraviolet radiation.

Explanation:

Mutation are spontaneous random sudden changes that occur in the genetic makeup of an organism's. they are changes in the genetic sequence, and they are main cause of diversity among organism

Hope this helped!!!!

Answer:

bioaccumulation of chemicals is the problem concerning all living organisms. This is the result of dynamic equilibrium between the uptake and elimination. The extent to which bioaccumulation occurs determines the toxic effects which are manifested. In some cases, the mechanisms of protection from certain undesirable substances deposited in special sites, to prevent their participation in the metabolic reactions, have evolved. The knowledge on bioaccumulation enables to assess the risk related with the presence of various chemicals in the environment, food, and at workplace and to present quantitatively the ability to control the use and emissions of chemicals.