Answer:
The idea of natural selection would in theory be affected by mutations because natural selection invloves a species/animal only surviving by having a certain trait. Over time, all of the animals/species would have this trait through elimination partnered with reproduction. A mutation may begin this cycle by giving an animal the ability to have an advantage over its fellow species.
Explanation:
Answer:
They affect how likely an organism is to survive and reproduce
Explanation:
Which individual's reasoning do you agree with more and why?
Answer:
Your question doesn't make sense. Who is the individual in question?
Explanation:
6. How can an introduced species affect an ecosystem?
Answer:
When a new and aggressive species is introduced into an ecosystem, it may not have any natural predators or controls. It can breed and spread quickly, taking over an area. Invasive species can change the food web in an ecosystem by destroying or replacing native food sources.
Explanation:
I majored in Biology
can someone please help me
Answer:
A. Tap water is a homogenous mixture and distilled water is a pure substance.
Explanation:
Tap water can be classified as a homogeneous mixture because it contains equal amounts of dissolved minerals and other chemicals that are even throughout the mixture.
In the other hand, distilled water is classified as a pure substance because it contains definite amount of atoms of elements and unique chemical properties that forms water.
3 examples of relationships between geologic and biologic events
Answer: Volcanic eruptions, earthquakes and tsunamis are all dramatic examples of geological events.
Explanation:
Please also describe how actin-binding sites are made available for cross-bridging with myosin heads during contraction.
Answer: The calcium ion binds to troponin, and this slides the tropomyosin rods away from the binding sites.
Explanation:
Contraction and relaxation of muscle cells brings about movements of the body. The contractile myofilament called sarcomeres are bounded at each end by a dense stripe called the Z - line, to which the myosin fibres are attached, and lying in the middle of the sarcomere are the actin filaments, overlapping with the myosin.
When action potential spreads from the nerve along the sarcolemma (muscle cell membrane), it penetrates deep into the muscle cell through the sarcoplasm (cytoplasm of muscle cell), and releases CALCIUM from the intracellular stores.CALCIUM triggers the binding of myosin to the actin filament next to it forming CROSS BRIDGES.
For this to occur, ACTIN BINDING SITE has to be made available. TROPOMYOSIN is a protein that winds around the chains of the actin filament and covers the myosin-binding sites to prevent actin from binding to myosin. The first step in the process of contraction is for calcium ions to bind to troponin so that tropomyosin can slide away from the binding sites on the actin strands.
Rejection occurs when the recipient’s immune system recognizes the donor tissue as foreign
Answer quickly please
How do roundworms differ from earthworms?
A. They have a cylindrical body.
B. They have a body that is tapered at both ends.
C. They reproduce sexually.
D. They are not divided into segments.
Answer:
Key difference: Earthworms, Tapeworms and Roundworms are long and cylindrical shaped worms. The basic difference between them is that Earthworms are segmented invertebrates belonging to the phylum Annelida, Tapeworms are flatworms belonging to the phylum Platyhelminthes, and Roundworms are parasitic worms belonging to the phylum Nematoda.
Explanation:
So: A?
Answer:
A
Explanation:
They have a cylindrical body.
Have a great day and good luck
How does the hydrosphere affect the atmosphere?
Answer:
so when pure water vapor from the water bodies get absorbed into polluted gases in the atmosphere, acid rain is caused and when this happens in a place where an element of the hydrosphere is located, it is polluted.
Explanation:
the combination of a heart arteries and veins and capillaries is____
Answer:
A (an organ system)
Explanation:
What is the area of a square if the perimeter is 40
units?
Answer:
this is the ans
Explanation:
first we have to write formula of area of square is
[tex]l {}^{2} [/tex]
Adaptive cellular mechanisms are responses to changes in what?
Answer:
Unsourced material may be challenged and removed. In cell biology and pathophysiology, cellular adaptation refers to changes made by a cell in response to adverse environmental changes. The adaptation may be physiologic(al) (normal) or pathologic(al) (abnormal).
Explanation:
Brainliest plss :)))
Which of the following is NOT an external structure of insects?
Head
Larva
Thorax
Abdomen
How can fossils help us
understand the Earth's history?
Answer: By studying fossils, we can tell how long someone has been on the earth for.
Explanation: We can easily learn where they lived, how they lived, and their past.
Indicate the correct designation of the paired sex chromosomes.
male: XY
female: YY
Answer:
Out of the written pairs, males have XY while females have XX
Explanation:
How do the hormones of the endocrine system act as a feedback mechanism for the menstrual cycle?
In positive feedback, rising levels of hormones feedback to increase hormone production. During most of the menstrual cycle, estrogen and progesterone provide negative feedback to the hypothalamus and pituitary gland. This keeps their levels more or less constant.
In negative feedback, rising levels of hormones feedback to the hypothalamus and pituitary gland to decrease the production of the hormones. In positive feedback, rising levels of hormones feedback to increase hormone production. During most of the menstrual cycle, estrogen and progesterone provide negative feedback to the hypothalamus and pituitary gland. This keeps their levels more or less constant. During days 12–14, however, estrogen provides positive feedback to the hypothalamus and pituitary gland. This causes a rapid rise in the production of estrogen by the ovaries and leads to ovulation.
Fill in the blanks to complete these sentences about rock characterstics A rock is an of minerals of a rock is a result of its mineral composition Most rocks contain more than one type of The
Answer:
More than one t Type of mineral
Answer:
1)aggregate
2)color
3)mineral
Explanation:
7. Which of these are characteristics of viruses? (Select all that apply.)
not living organisms
are single-celled
are decomposers
cannot reproduce without a host
Answer:
I believe the answers are not living organisms and cannot reproduce without a host.
Explanation:
Lab: Natural Selection answer in the link pls 50 points and
Which of the following are responsible for the production of cancer cells?
A. oncogenes
B. mucin
C. tumor suppressor genes
D. cytosol
Answer:
The answer is C, tumor suppressor genes
What is the process of Sexual reproduction of a Hammerhead Shark?
Answer:
The process of sexual reproduction of a hammerhead shark is that the hammerhead sharks exhibit a viviparous mode of reproduction with females giving birth to live young.
Explanation:
Answer:
The hammerhead sharks exhibit a viviparous mode of reproduction with females giving birth to live young. Like other sharks, fertilization is internal, with the male transferring sperm to the female through one of two intromittent organs called claspers. The developing embryos are at first sustained by a yolk sac.
Explanation:
hope this helps
20 POINTS PLZ NEED HELP
I really fluffed up and need help
Directions: Follow the steps below to learn how to lower energy use.
Materials
You will need two saucepans about the same size with lids, a watch or a clock, water, a stove, two eggs.
Pour equal amounts of water into each saucepan. Make sure both have enough water to cover an egg.
Cover one saucepan with a lid.
Put the saucepans on separate burners of the same size on your stove and turn them on to high.
Start timing to see which pot of water comes to a vigorous boil first. (You’ll have to listen to the covered one to tell when it boils—lifting up the lid will spoil the experiment.)
How much longer does it take the second pot of water to boil?
When the two pots of water are boiling:
Place an egg in each one and cover both pots.
Leave one burner on high heat and lower the other to simmer.
Time them for three minutes then remove both eggs at the same time.
Break the eggs and see if one is more cooked than the other.
Explain your observations and what you can conclude based on what you know about heat and energy conservation.
one egg is hard semi-ish boiled and the other is not at all
Explain the role of nutritional systems in contributing to the maintenance of homeostasis in organisms.
Answer:
Nutritional Systems are very important when it comes to homeostasis. The body needs certain nutrients when performing the body's daily functions. The body needs nutrients like proteins and carbs because they contain energy. The energy from these nutrients help the body to it's daily tasks and stay healthy.
Journal
1. The following are the functions of the skeletal system, except
a. It gives shape to the body
b. It serves as the framework of the body.
c. It protects the internal organ of the body.
d. It circulates oxygen and removes carbon dioxide.
2. Why is bone marrow important to the body?
a. It stores much fat.
b. It makes the bone strong.
c. It produces red blood cell.
d. It produces new bone cell.
Answer:
1.
Answer: D
2.
Answer: A,C,D
The baker mixed yeast in the dough and kept it away for the night , The next morning it had risen high up , Explain how this happened
Explanation:
Maybe this can help.
In bread making (or special yeasted cakes), the yeast organisms expel carbon dioxide as they feed off of sugars. As the dough rises and proofs, carbon dioxide is formed; this is why the dough volume increases.
When is carbon dioxide used during photosynthesis?
A. Light- independent reaction
B. Light-dependent reaction
C. Carbon dioxide is made, not used
Answer:
Pretty sure its b.
Explanation:
what is anaerobic respiration
Answer:
Anaerobic respiration is the type of respiration through which cells can breakdown sugars to generate energy in the absence of oxygen.
Hemophilia is a recessive sex-linked trait. A non-hemophiliac man and woman marry and
have a daughter who is a hemophiliac. The father of this child suspects infidelity and is
considering a divorce. Does he have sufficient evidence of infidelity? Explain.
The father does not have sufficient evidence of infidelity as the parent's genotype is not mentioned which could have the recessive trait of hemophilia being inherited to the daughter.
What is hemophilia?Hemophilia is a disorder which is rare which results when the blood does not clot in it's usual way as it does not have sufficient blood-clotting factors .A person suffering from hemophilia can bleed for a longer period of time resulting in blood loss.
It is almost always that hemophilia occurs genetically . Treatment of hemophilia include replacement of the specific blood clotting factor that is reduced. Symptoms of hemophilia vary from person to person depending on the level of the clotting factors.
Signs and symptoms include excessive bleeding ,large or deep bruises, pain or swelling in joints ,nosebleeds,etc.
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Mike created the following table... what needs to be corrected
Answer:
The outer core is liquid and the inner core is solid.
Explanation:
This statement is true, the inner core is not liquid it's solid.
The outer core is liquid and the inner core is solid. The opportunity cost of 1 chair is 1/5 table for Mike and 1/3 table for Sandy.
What is cost opportunity?Opportunity cost of the next best option forgone when one alternative is chosen over other alternatives. In order to determine the opportunity cost of making chairs, divide the number of tables made for each person by the number of chairs.
Mike's opportunity cost in making one chair = 4/20 = 1/5
Sandy's opportunity cost in making one chair = 6/18 = 1 / 3
Petrifcation can be defined as the process in which the organic material of the dead living being becomes fossil by the replacement of mineral deposition in the bony, hard material. Thus, although the body components gets decomposed wiped out due to this process. The body shape of the dead organism remains the same as that was in living.
Therefore, The is liquid and the inner core is solid. The opportunity cost of 1 chair is 1/5 table for Mike and 1/3 table for Sandy.
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Anaerobic bacterial fermentation occurs in the absence of:
Bacteria
Enzymes
Oxygen
All of the above
Answer:
Oxygen
Explanation:
Cellular respiration is a pivotal process that must be carried out by the cells of living organisms in order to obtain energy needed for their metabolic activities. This process of cellular respiration breaks down glucose either in the presence of OXYGEN (aerobic) or absence of OXYGEN (anaerobic).
Anaerobic respiration or fermentation is carried out by certain bacteria in the absence of OXYGEN to produce lactic acid as products.
Select all that apply. The first known pandemic in A.D. 542, struck which parts of the world?
Australia
Middle East
North America
South America
Asia
North
Africa
Europe
Answer:
Isn't it all of the above-- correct me if I am wrong!!
Explanation:
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