Answer:
While skeletal muscles are arranged in regular, parallel bundles, cardiac muscle connects at branching, irregular angles, called intercalated discs. Striated muscle contracts and relaxes in short, intense bursts, whereas smooth muscle sustains longer or even near-permanent contractions.
In _________ area cells, the checkpoint proteins are often abnormal, allowing damaged DNA to be replicated and passed to daughter cells. This is how ________ area are copied from one cell to the next. If there is a mutation in a gene that normal controls growth, then the cell will not have normal _________ area of growth. A cell with defective checkpoint proteins can result in cancer, the _________ area growth of cells with mutated DNA.
Answer:
How cells use checkpoints at the end of G1 phase, end of G2 phase, and partway Normal cells, however, move through the cell cycle in a regulated way.
Explanation:
Someone pls helppppp
Vitamin B and folic acid deficiencies are characterized by production of abnormally large erythrocytes called
Answer:
Megaloblasts
Explanation:
Megaloblasts are nucleated red cells that are formed as a result of these three factors.
1. Deficiency in diet of vitamin b12 or folic acid
2. Bad absorption of vitamin b12 or folic acid
3. When there is increase in the demand for vitamin b12 or folic acid.
Megaloblasts are large erythroblasts that comes up in the blood especially in a case of pernicious anaemia.
What does the environment mean?
Answer:
the surroundings or conditions in which a person, animal, or plant lives or operates
A zebra embryo is in the early stages of development. The cells are beginning to look different from each other.
Which statement is the best description of what is happening to the zebra embryo?
Meiosis is breaking down old cells to form new ones.
Mitosis is making identical new cells from the original cells.
The cells are differentiating so that they have specialized functions
Cellular respiration is making many different types of cells.
Answer:
The cells are differentiating so that they have specialized functions
Explanation:
Answer:The cells are differentiating so that they have specialized functions
What does your brain stem control?
A) Heart rate and breathing
B) All functions of the body
C) Reflexes
Answer:
A) Heart rate and breathing
WHY DOES WATER HAVE A HIGH SPECIFIC HEAT? WHAT IS THE SPECIFIC HEAT OF WATER?
Answer:
Depends on the temperature of it's surroundings.
Explanation:
Answer:
There are two reasons. One of them is that the water molecule is “bent”. It is rotationally asymmetric, meaning that it can “store” more energy in the rotational degrees of freedom than other, symmetric molecules (like diatomic molecules, or CO 2 for example).
The other and more important reason are the hydrogen bonds. When a hydrogen atoms binds with a more electronegative atom (such as oxygen in the case of water), its electron has a higher probability to be found in the vicinity of the oxygen atom, leaving the hydrogen nucleus partly “exposed”. This partial charge on the hydrogen will create a very weak bond with the partly negatively charged oxygen atom of a neighbouring water molecule (remember, the hydrogens’ electrons prefer to be around the oxygen atom instead, making it a bit negatively charged). This electrostatic interaction, or bond, between neighbouring water molecules is the famous hydrogen bond.
Even though each hydrogen bond by itself is weak compared to the bonds in the molecules themselves, there are many neighbours around each water molecule, which means that water can store a significant amount of energy in these bonds. As you add heat to water, instead of speeding up the molecules (increasing their kinetic energy and thus temperature) the hydrogen bonds get broken up, soaking in the additional heat without much change in temperature.
Explanation:
When previewing a literary text, to what features should you pay attention?
a.
titles
c.
illustrations
b.
beginnings and endings
d.
all of the above
Please select the best answer from the choices provided
A
B
C
D
Answer:
A. Titles
Explanation:
Answer:
d
Explanation:
i took the test
Genetics is the branch of biology that involves the study of how different traits are transmitted from one generation to the next.
O True
O False
Explain how the unique properties of water are used by plants?
The organic compounds in living things are organized into groups: carbohydrates, lipids, proteins, and nucleic acids.
Which two macromolecules play a central role in Transcription and Translation?
lipids and nucleic acids
proteins and carbohydrates
carbohydrates and lipids
nucleic acids and proteins
nucleic acids and proteins
carbohydrates and lipids
Phylogeny can be based on morphological homologies and molecular homologies. What are the advantages and limitations to using each
Answer:
1. Molecular data:
- Advantages:
a. less susceptible to evolutionary convergence
b. huge amount of potential characters available for data comparison (each nucleotide can potentially be used to assess the state of a character)
c. useful for assessing times of divergence
- Disadvantages:
a. multiple sequence alignments are hard to solve for sequences with high evolutionary rates
b. limitation to the number of states of the character
c. generally unuseful for comparing with data from extinct species
d. difficulties of inferring positional homology
2. Morphological data:
- Advantages:
a. useful to understand the evolutionary significance of traits in extinct ancestral species
b. there is not limitation to the number of different states of the character
- Disadvantages:
a. susceptible to evolutionary convergence
b. limited number of characters is available
Explanation:
Morphological and molecular data are the two primary sources of information used to infer homology. In the last years, molecular data gained ground for this purpose. However, it should be stressed that molecular data only have 4 different states (i.e., 4 different types of nucleotides), while for morphological data in principle there is not limitation to the number of different states. On the other hand, morphological traits are more susceptible to evolutionary convergence, thereby leading to spurious results when assessing the homology of problematic characters. Finally, it is important to highlight that morphological data are generally more useful to understand the origin and homology of traits in extinct species.
HELPPPP!!!! ASAPPPPP!!!
14.
Which of these correctly relates the photoreceptor to the region of the brain to which it connects?
Photoreceptor connects to visual region.
Photoreceptor connects to gustatory region.
Chemoreceptor connects to visual region.
Chemoreceptor connects to somatosensory region.
Which of these correctly relates the photoreceptor to the region of the brain to which it connects? Photoreceptor connects to visual region
What is photoreceptor ?Photoreceptors can be defined as cells for detecting light. They are composed of the outer nuclear layer that contains the cell nuclei the inner segment that houses the cell machinery and the outer segment that contains photo-sensitive pigment.
Therefore photoreceptors are the only cells that can convert incoming light into an electrical signal that can be carried to the brain via the optic nerve to create conscious vision.
Learn more about photoreceptor here: brainly.com/question/10355810
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Color blindness, a sex linked trait, apears more often in __________ than in ____________.
a) males, females
b) females, males
c) Neither
Answer:
I think I am not so sure about it but I think it is B if not I think A
What helps substances cross the cell membrane during facilitated diffusion?
Choose 1 answer:
Cholesterol
B
Carbohydrates
Proteins
D
Water
Proteins help substances cross the cell membrane during facilitated diffusion. Thus option C is correct.
What are proteins?Proteins are defined as large biomolecules and macromolecules and are made up of one or more extended chains of amino acid residues.
Protein play the important role in development of human body.
Proteins assist our body with cell regeneration and repair.
There are basically eight types of proteins.
Hormonal proteinEnzymatic proteinStructural proteinDefensive proteinStorage proteinTransport proteinReceptor proteinContractile proteinThus, proteins help substances cross the cell membrane during facilitated diffusion. Thus option C is correct.
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is immunity a function of proteins
Answer:
Yes
Explanation:
Of the many functions of protein in your body, one of its most critical is supporting your immune system. The immune response protects you against harmful microorganisms, including viruses and bacteria, as well as foreign substances that might attack your defenses, such as a thorn or flames from a fire.
this needs to be done ASAP!
Answer:
what is it?/
Explanation:
i cant help what i cant see or read
If a woman has brown eyes with the recessive allele for blue eyes (Bb), each of her sex cells will have
OA.
the allele for blue eyes, b.
ОВ.
the allele for brown eyes, B.
OC.
one allele or the other, B or b.
OD.
the same allele she does, Bb.
Answer:
c
Explanation:
Answer:
b. They would have the allele for brown eyes
Explanation:
the capital B means that it is the dominant letter.
What is the difference between an autotroph and a heterotroph?
Answer:
Autotroph produces its own food (Plants)
The human heart is
A) Neurogenic heart B) Myogenic heart
C) Pulsating heart D) Ampullary heart
c
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\'Explanation:
Answer:
c
Explanation:
scientists who believe in solar nebular theory believe that the formation of the solar system began around
Answer:
4.7 Billion years ago!
Explanation:
which renewable energy resource is directly impacted by air quality?
Answer:
Wind power
Explanation:
could have an almost immediate impact on air quality by halting the production of these particles.
How can clothes impact someone’s performance?..i need three facts for an essay
Answer:
Clothes too tight can restrict someone's movement Clothes too baggy could possibly trip someone up, which could lead to broken bones/concussionsClothes could get in someone's way while they are trying to preform or do a certain task that could result in an injury.Answer:
Clothes can impact someone's performance by
Causing them to be cold or hot and experience symptoms.
Slow them down if they are exercising because of the material.
The clothes might get damaged causing the person to have to stop whatever they are doing to assess the situation.
Explanation:
I am a human. Therefore, I have wore clothes.
Which characteristic of life deals with the most basic unit of living organisms?
a. Growth
C. development
b. Homeostasis
d. reproduction
Answer:
well i belive its growth hope that helps
Which type of energy do muscle cells use to produce mechanical energy in the movement of an arm?
Answer:
usually in association with myosin, are responsible for many types of cell movements. Myosin is the prototype of a molecular motor—a protein that converts chemical energy in the form of ATP to mechanical energy, thus generating force and movement.
Explanation:
The type of energy muscle cells use to produce mechanical energy in the movement of an arm is known as chemical energy.
Which type of energy do muscle cells use?The type of energy that muscle cells use is known as chemical energy. Adenosine triphosphate (ATP) is the energy source for all muscle contractions. Energy is released when ATP is broken into ADP+Pi (adenosine diphosphate and phosphate group).
Maintaining the availability of ATP for muscle contraction is the limiting factor since ATP is not stored in large amounts in skeletal muscle. Muscle contraction converts chemical energy to mechanical energy when ATP is hydrolyzed during cross-bridge cycling.
This mechanical energy is then distributed and stored in the tissue as the muscle deforms or is used to perform external work.
Therefore, chemical energy is the type of energy muscle cells use to produce mechanical energy in the movement of an arm.
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HELP ASAP!! 2 MINUTES!! I'll give brainliest and points and thanks if you get it right just question 2, you can do question 3 for extras
pls help if you know wither one of these
Answer:
sex cell and germ cells
Explanation:
Which molecule brings amino acids to the ribosomes to be assembled into proteins
Answer:
Was this fast anseering
Explanation:
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TRUE OR FALSE:
Selective breeding cannot be used to produce pest-resistant crops.
Answer:
false
Explanation:
10 examples of unwanted friction that can be lowered
Answer:
List three ways of reducing friction. 1.Polishing the rough surface. 2.Providing all bearings or wheels between the moving parts of a machine or vehicles reduce friction and 3.allow smooth movement as rolling friction is less than sliding friction.