Answer:
1. c . The life cycles of insects and animals all start from a fertilized egg.
2. d . A bee goes through a pupa stage, while the grasshopper goes through a nymph stage.
3. b . I and II
Explanation:
The egg fertilization is very important for the emergence of almost all organisms. If the egg is fertilized then it will change into an organism otherwise no organism is produced from that unfertilized egg. The bees has four distinct life stages i.e. the egg, larva, pupa and adult whereas grasshopper has three stages i.e. egg, nymph, and adult. A moth and an eagle both start their life cycle as a fertilized egg and moth and an eagle both hatch from an egg which is laid by the mother outside of their body..
Answer:
It is 1 and 2 ethier one of those hope you get it right! (:
FACERII (Why the bulb of a dynamo glow brightly when
speed of bicycle is increased and become dim when the
speed is decreased? Give reasons.)
Am
ma
Answer:
As the bicycle moves, the wheel turns a magnet inside a coil. This induces enough electricity to run the bicycle's lights. The faster the bicycle moves, the greater the induced voltage - and the brighter the lights.
Explanation:
hope you understand :)
Sedimentary rock indicates the current or past existence of__ A. Water B. plants and animals C. carbon dioxide D. lava
Answer:
The answer is A. Water
Explanation:
some one reported my answer for incomplete even tho it was complete
In fruit flies, red eyes (pr _) are dominant to purple eyes (prpr) and normal wings (vg _) are dominant to vestigial wings (vgvg). The genes are located on the same chromosome. A pure breeding red-eyed fly with vestigial wings was crossed with a pure-breeding purple-eyed fly with normal wings. All of the F1 progeny had a WT phenotype. What represents the arrangement of alleles on the F1's chromosome?
Answer:
F1) 100% wild type, Pr Vg / pr vg
-----Pr--------Vg------
-----pr---------vg------
Explanation:
Available data:
Two genes located on the same chromosomered eyes (Pr _) are dominant to purple eyes (prpr)normal wings (Vg _) are dominant to vestigial wings (vgvg)Cross: A pure breeding red-eyed fly and vestigial wings with a pure-breeding purple-eyed fly and normal wings
Parentals) Pr vg / Pr vg x pr Vg / pr Vg
Gametes) ----Pr-------vg---- ----pr-------Vg----
----Pr-------vg---- ----pr--------Vg----
F1) 100% wild type, Pr Vg / pr vg
-----Pr--------Vg------
-----pr---------vg------
The very rare Bombay blood phenotype in humans results in blood type O because of the lack of both the A and B antigens in individuals who are of hh genotype. This genotype results in blood type O regardless of the genotype at the unlinked I locus. If two parents are both of I A I B Hh genotype, what is the probability that their child will have type blood B
Answer:
The probability that the child will have type blood B equals 3/16.
Explanation:
Available data:
Individuals with the rare Bombay blood phenotype lack both the A and B antigens in individuals and/or are of hh genotype.Cross between two parents that are both of I A I B Hh genotypeCross: IAIB Hh x IAIB Hh
Gametes) IAH, IAh, IBH, IBh
IAH, IAh, IBH, IBh
Punnett square) IAH IAh IBH IBh
IAH IAIAHH IAIAHh IAIBHH IAIBHh
IAh IAIAHh IAIAhh IAIBHh IAIBhh
IBH IAIBHH IAIBHh IBIBHH IBIBHh
IBh IAIBHh IAIBhh IBIBHh IBIBhh
F1) Genotype
1/16 IAIA HH 2/16 IAIAHh 1/16 IAIAhh 2/16 IAIBHH 4/16 IAIBHh 2/16 IAIBhh 1/16 IBIBHH 2/16 IBIBHh 1/16 IBIBhhPhenotype
3/16 Blood type A 6/16 Blood type AB 3/16 Blood type B 3/16 Blood type 0which of the following is NOT true of eukaryotic cells
A. Eukaryotic cells have a nucleus to hold, protect, and organize the genetic material.
B. Eukaryotic cells can be unicellular or multicellular.
C. Eukaryotic cells are considered very primitive and basic.
D. Eukaryotic cells can reproduce asexually
Answer:
c
Explanation:
puesto que las células eucariotas son la evolución celular de las células procariotas y ahí se muestra como que no es cierto , por otro lado nos dice también que estas células no tienen complejidad y ese es otro dato erróneo, ya que ellas están compuestas por gran cantidad de orgánulos que realizan diferente funciones
What affect does the Sahel's climate and physical characteristics have on population distribution?
Answer:
The Sahel has been labeled as one of those regions with the danger of overpopulation. It has been described with adjectives such as semi-arid, hot, dry, windy or sunny.
Sources have it that the G5 Sahel countries which include Mali, Niger, Burkina Faso, Mauritania, Chad will increase from about 84 million inhabitants in 2019 to 197 million in 2050. This projection includes people under 15 years of age which comprise about 50% of the entire population.
The climate itself doesn't seem to deter population growth. What seems to be occurring is sedentarization. This is due to rapid desertification and drought which have persisted for some time.
Explanation:
Sedentarization refers to the choice of a group of people who usually are very nomadic or migratory to settle permanently in a place.
This is usually due to a more favorable weather and topography which supports agriculture.
Cheers!
Types of histokinate
Answer:
moving tissue type,moving fluid type,processing of tissue
using what have you learnt about the effect of concentration gradient and surface area to volume ratio, explain the adaptations of a leaf for photosynthesis
Answer:
thanks
Explanation:
Leaves are adapted for photosynthesis and gaseous exchange.
They are adapted for photosynthesis by having a large surface area, and contain openings, called stomata to allow carbon dioxide into the leaf and oxygen out. Although these design features are good for photosynthesis, they can result in the leaf losing a lot of water. The cells inside the leaf have water on their surface. Some of this water evaporates, and the water vapour can then escape from inside the leaf.
When water evaporates from the leaves, resulting in more water being drawn up from the roots, it is called transpiration.
To reduce water loss the leaf is coated in a waxy cuticle to stop the water vapour escaping through the epidermis. Leaves usually have fewer stomata on their top surface to reduce this water loss.
Leaves enable photosynthesis to occur. Photosynthesis is the process by which leaves absorb light and carbon dioxide to produce glucose (food) for plants to grow. Leaves are adapted to perform their function, eg they have a large surface area to absorb sunlight.
Plants have two different types of 'transport' tissue, xylem and phloem. These specialised tissues move substances in and around the plant.
Many of the DD-amino acids found in nature have been discovered in bacterially produced peptides that have antibiotic properties.
a. True
b. False
Answer:
True
Explanation:
Most the amino acid are of L configuration. Antimicrobial peptides consists of D amino acids (D amino acid occur naturally). D amino acids are also found in walls of microorganism. Antimicrobial peptides is released by species including bacteria, fungi etc.
For example - Bacteriocin, peptaibols, plectasin etc.
Hence the given statement is true
Chargaff's rules of base pairing helped scientists determine how DNA replication occurs. What property of the replication process is explained by Chargaff's rules?
A. The phosphate-sugar backbone of one strand serves as a template for the phosphate- sugar backbone of the complementary strand.
B. The phosphate-sugar backbone of one strand serves as a template for the sequence of four nucleotides in the complementary strand.
C. Adenine (A) and thymine (1) are always paired together within a single DNA strand, as are cytosine (C) and guanine (G).
D. Adenine (A) and thymine (1) always bind to each other across complementary strands, as do cytosine (C) and guanine (G).
Answer: The answer is D.
Explanation: MARK ME BRAINLIEST FRIEND!!!
Which answer helps to explain why carbon atoms tend to make 4 covalent bonds
Answer:
Carbon atoms tend to make 4 covalent bonds because the valence shell needs 8 electrons.
Explanation:
For atoms to be stable, they must have filled outermost energy shells called valence shells. This is called the octet rule.
Ladybird is a type of bird.
True
False
Answer: it’s false
Explanation: ladybird is a beetle
Answer:
true answer because lady bird has light bone and flight feadures
This is the result of or response to changing the manipulated variable.
Answer:
Responding or dependent variable
Explanation:
the average weather pattern taken over a long period of time is called ............. of that place.
Answer:
Climate
Explanation:
This list of terms BEST describes ?
A) hypothesis
B) law
C) Theory
D) variable
Answer:
the answer is
Explanation:
hypothesis
What is 3 examples of species population
Explanation:
it's can be any animal or plant
How is the organism that receives the DNA with the code for the desired trait
described?
1.genetically modified
2.the receiver organism
3.the strongest organism
According to cell theory, all new
cells...
A. must share DNA with existing cells.
B. must eat.
C. come from other cells.
Answer:
C. come from other cells.
Explanation:
which product is made from a renewable resource?
A. a penny made with copper?
B. computer chips made from silicon?
C. a pie made with blueberries?
D. earrings made from silver?
Answer:
C. A pie made with blueberries
Explanation:
Blueberries can be grown naturally, so they are a renewable resource.
Blueberries are renewable resources. Hence, option C is correct.
What are renewable resources?Renewable resources are those natural resources that continue to exist even after their consumption. They are also known as flow resources.
Renewable resources include plants, biomass, ocean currents, energy, wind, solar energy, tides, waves, etc. All these things will continue to exist even after their consumption. They can be used repeatedly and do not run out.
Advantages of renewable resources:
They are cheap.They are easily available.They are eco-friendly.They are clean and efficient.Copper, silicon, and silvers are minerals and non-renewable resources, and blueberries are plant products and hence, they are renewable resources. Therefore, option C is correct.
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What is a benefit engineers have seen as a result of improving the mutation process?
A. Engineers have total control to prevent mutations from occurring.
B. Engineers have an abundance of seeds with different genetic viruses.
C. Engineers have figured out how to use the mutation process on machines.
D. Engineers do not need to grow seeds into adulthood in order to identify the
mutations.
Answer:
D. Engineers do not need to grow seeds into adulthood in order to identify the mutations.
Explanation:
An object of mass 300 kg is observed to accelerate at the rate of 4 m/s².CALCULATE the
force required to produce this acceleration
Answer:
1200N
Explanation:
since f=ma
we keep all the values and we get it 1200 N
Which of the following best describes the cause of bloat in cattle?
Gas is trapped in the rumen stomach and forms a foam that is difficult to pass.
Flies and ticks cause irritation of the eyes and skin and lead to infected rashes.
Bacteria infect the uterus of the mother and cause premature or aborted births.
Parasites are lodged in the digestive tract from eating from damp, contaminated fields.
Which of the following is an unintended consequence of cutting down trees?
A. Cleared land can be used for agriculture.
B. Depleting wooded areas means fewer habitats for forest
organisms.
C. People burn wood for fuel.
O. D. People use wood to build houses
Answer:
B. Depleting wooded areas means fewer habitats for forest organisms
Term
1.
2.
3.
countrationer
5.
6.
7.
8.
9.
10.
11.
12.
Definition
high to low movement of molecules; uses transport protein; no energy required
a solution that has the same concentration of solute as the cells it surrounds
water-loving
a difference in the concentration of molecules from one location to another
structure that identifies the cell
having less solute molecules than the cytoplasm of a cell
allows certain molecules to pass through; keeps some molecules out
the amount of molecules in a specified area
use of vesicles to move large molecules out of the cell
the substance that is dissolved in a solution
movement of molecules from a low to high concentration; uses transport protein;
requires energy
movement of water from an area of high concentration to an area of low
concentration through a cell membrane; no energy required
mixture created when one substance is dissolved in another
movement of molecules from an area of high concentration to an area of low
concentration; no energy required
use of vesicles to move large molecules into the cell
a solution that has a higher concentration of solute molecules than the cytoplasm
of the cell it surrounds; will cause cells to shrink
phospholipid and protein covering of every cell that controls what goes into and
out of each cell
the liquid that dissolves the solute in a solution
water-fearing
a solution that has a lower concentration of solute molecules than the cytoplasm
of the cell it surrounds; will cause cells to swell and burst
a structure that helps to move molecules across the cell membrane
current model that describes membrane structure in which a phospholipid sea is
embedded with a wide variety (mosaic) of protein molecules
13
14.
A diffusion
15.
16.
17
18.
19.
20.
21.
22.
Answer:
structure that identifies the cell / recognizes stuff around the cell. hypotonic. having less solute molecules than cytoplasm of a cell / having a lower ... movement of molecules from low to high; uses transport protein; requires energy ... movement of molecules from high concentration to low concentration; no energy required.
Explanation:
How and why does a DNA molecule replicate itself?
Answer:
DNA makes a copy of itself during cell division. The separation of the two single strands of DNA creates a 'Y' shape called a replication 'fork'. The two separated strands act as templates for making the new strands of DNA.
Explanation:
Need help fast pls will give brainliest
Answer: increase,high,producers...
Explanation:
identify the organism that is benefiting from the relationship in Finding Nemo
What is the structure inside of the nucleus called and the name of the phase of the
picture below?
a. chromatid and interphase
b. chromosome and prophase
C. chromatin and interphase
d. centromere and mitosis
you haven't added a picture
Explanation:
But if you can describe the picture I can answer it
The nucleus is the major and the central organ of the cell. The structure inside of the nucleus is chromatin and the phase is interphase.
What is chromatin and interphase?Chromatin is a complex structure present only in the eukaryotic cells that are composed of protein and DNA. It is required for the packaging of the long DNA threads into a compact and dense form.
Chromatin makes up the chromosome and is the packaging element of the genetic material. The basic and smallest unit of the chromatin is the nucleosome.
Interphase is one of the cell cycle periods that contain the non-dividing phase. The G1, S and the G2 phase of the cell cycle are part of the interphases.
In this phase, the cell undergoes the process of replication or duplication and cell growth. Not the actual division of the cell occurs instead it prepares the cell for the division.
Therefore, option c. interphase and chromatin are the phases and the structures present inside the nucleus.
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Identical twins have ____________ but ______________.
A. Different DNA, come from the same sperm and egg
B. Identical environmental variation, different DNA
C. Identical DNA, come from different sperm and eggs
D. Identical DNA, different environmental variation
Answer:
D
Explanation:
Identical twins have identical DNA, but different environmental variations.
What are identical twins?
Identical twins are twins that are born from a single sperm and egg. They contain identical DNA codes. They are monozygotic twins, and they are 100% identical to each other.
Thus, the correct option is D. Identical DNA, different environmental variation.
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12 Which direction does blood flow in arteries?
Answer:
Like all fluids, blood flows from a high pressure area to a region with lower pressure.
Good luck!
Answer:
The arteries carry blood out of the heart and the veins carry it in. The flow of blood through the vessels and chambers of the heart is controlled by valves.