Answer:
In se*ual reproduction, mitochondria are normally inherited exclusively from the mother; the mitochondria in mammalian sperm are usually destroyed by the egg cell after fertilization. ... The fact that mitochondrial DNA is maternally inherited enables genealogical researchers to trace maternal lineage far back in time.
1. What is a renewable natural resource?
2. What is a nonrenewable natural resource?
Hi! I need help with this question. I’m not 100% sure what it is asking, so if you could at least tell me what it is wanting me to do that would be great :)
Answer:
DNA: TAC CCG GGA TTC CAT AAC
mRNA (A-U and C-G): AUG GGC CCU AAG GUA UUG
Amino acids: Met Gly Pro Lys Val Leu
Which of the following BEST represents competition among organisms?
A. zebras staying together in groups to avoid predators
B. different types or species of trees trying to obtain sunlight and water
O
c. a walking stick insect resembling its environment
D. a cheetah hunting and killing a gazelle for food
Answer:
B
Explanation:
Does an unusually cold day in summer indicate that a region's climate has changed?
A
Yes; climate changes over the short term.
B
Yes; climate describes the temperature of a region at a given time.
C
No; although weather may change, climate does not change.
D
No; climate describes long-term average conditions.
Over 500 million years ago what was British Columbia ??
Answer:
500-million-year-old fossil found in BC is ancient ancestor of spiders and scorpions. Palaeontologists in British Columbia have found a fossil of the oldest known ancestor of scorpions and spiders.
reactant - product
If there are 4 grams of reactant, how many grams of product are produced by the chemical reaction?
A) 0 grams
B) 2 grams
C) 4 grams
D) 8 grams
Answer:
C
Explanation:
Answer:
c 4 grams
Explanation:
due to the law of conservation of matter, a reaction will produce the same mass as the reactant
What is the difference between abundant and scarce resources?
What type of reproduction involves forming offspring from one parent
Answer:
Asexual reproduction
Explanation:
Process of creating new individual using one parent organism
Which are examples of environmental changes that can influence natural selection?
predators
predators
availability of water
availability of water
temperature
temperature
height of legs
height of legs
fur
fur
natural disaster
natural disaster
color of body
color of body
size of body
size of body
size of beak
Answer:
availability of water
temperature
natural disaster
Why does a substance like caffeine not bioaccumulate but heavy metals like mercury and lead do? Explain where these toxins are stored in the human body. Hint: is caffeine fat-soluble?
Answer:
Brain, heart, lungs, liver, kidney
Explanation:
Caffeine does not bioaccumulate in our body but heavy metals like mercury and lead can accumulate because caffeine are fat-soluble and broken down into simpler substances and used by the body whereas heavy metals are not fat-soluble and also essential for our body to function normally but when these heavy metals are very in concentration it accumulated in our body and causes several problems in our body organs. These heavy metals accumulation occurs in the organs such as brain, heart, lungs, liver and kidney where it cause problems.
Caffeine is in organic molecules that are metabolized by the liver. Heavy metals are atoms that cannot be broken down. They can be sequestered in the bones or in fatty tissue (with methylmercury) and have a long residence time in the body.
These toxins are stored in the human brain, heart, lungs, liver, and kidney.
What are heavy metals and examples?
The word-heavy metal directs to any metallic chemical element that has a relatively high density and is toxic at low concentrations.
Examples of heavy metals include mercury (Hg), cadmium (Cd), arsenic (As), etc.
Thus, Heavy metals are atoms that cannot be broken down.
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What does the “ rainbow in the sky” symbolize
O Any beautiful work of nature
O The end of a rainstorm
O The end of a difficult time
O birth
Which product molecule of photosynthesis is released as waste ?
Answer:
Carbon dioxide is the waste released
consist of either one or two long chains of repeating units called nucleotides. DNA and RNA are the two main types.
Answer:
In case of both DNA and RNA, in general it is the nucleotides.
Nucleotides basically consists of three parts. The sugar(deoxyribose in DNA and ribose in RNA, both of which are pentose sugars), nitrogenous base and a phosphoric acid group.
The only component that varies in the nitrogenous base. There are five different types.
1.Adenine(A)
2.Guanine(G)
3.Cytosine(C)
4.Thymine(T)
5.Uracil(U)
1 and 2 are known as purines.
3, 4 and 5 are known as pyrimidines.
In DNA, A base pairs with T by means of a double hydrogen bond and G pairs with C by means of a triple hydrogen bond.
In RNA, A base pairs with U by means of a double hydrogen bond and G pairs with C by means of a triple hydrogen bond.
Does all living thing have DNA?
Answer:
No
Explanation:
plants or animals don't need a DNA
Answer:
yes
Explanation:
l o l
Energy for the cell’s use is stored when
ADP and P form ATP
Acetic acid is formed
Glucose is broken into pyruvic acid
CO2 is released from the reaction
AnswerA. ADP and P form ATP
Explanation:
Hope this is correct!
Answer:
ADP and P form ATP
Explanation:
The high energy is released in steps and picked up by ADP and P to form the high energy phosphate (ATP). For each two hydrogens passed down the chain, three ATPs are produced. At this stage, 36 ATPs are produced from the original glucose that started out in glycolysis. After the hydrogens have given up all of the excess energy they are combined with oxygen to form water. mark me brainy plz! (^_^)
If two forces on an object are not equal in size, then the forces are unbalanced, and a change in motion results. Which of the following examples does NOT represents an object with an unbalanced force?
A car sitting in a garage
A leaf falling from a tree
A rocket being launched
A baseball is thrown into the air
The length of a measuring tape is 9 m and its width is 3.5 cm. What is the ratio of its length to the width
Answer:
length:width = 600:1
Explanation:
Rising air cools which results in evaporation.
TRUE
FALSE
help, thank you
How does using a microscope allow you to see what’s biotic or abiotic?
(how to know if a cell is abiotic or biotic)
Answer:
Abiotic factors refer to non-living physical and chemical elements in the ecosystem. Abiotic resources are usually obtained from the lithosphere, atmosphere, and hydrosphere. Examples of abiotic factors are water, air, soil, sunlight, and minerals. Biotic factors are living or once-living organisms in the ecosystem.
Explanation:
what is the relationship between structure and function of molecules
Answer:
PS:Can I be brainliest.
Have a nice day
Explanation:
Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals. When an atom forms covalent bonds, the orbitals in its valence shell are rearranged.
Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals.
What is molecules?
The smallest component of a substance that possesses both its chemical and physical characteristics. One or more atoms make up molecules.
They may have the same atoms (for example, an oxygen molecule has two oxygen atoms) or different atoms if they have more than one (a water molecule has two hydrogen atoms and one oxygen atom).
Biological molecules like DNA and proteins can include thousands of atoms. When an atom forms covalent bonds, the orbitals in its valence shell are rearranged.
Therefore, Each molecule has a characteristic size and shape that determines its function in the living cell. The shapes of molecules are determined by the positions of the atoms' orbitals.
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PLZ HELP ASAP!! Environmental factors can influence the gene expression in some organisms.
Describe how environmental factors can affect an organism’s phenotype.
Explain how light exposure can affect gene expression in organisms of the same species. Provide an example.
plz dont steal points
Answer:
The greatest of environmental factors on phenotype is on phenotypic plasticity, phenotypes that may change due to changes in the environment; ex: snowshoe hare have brown-colored fur in summer/spring and white fur in winter. Environmental factors may affect gene expression which may result in normal/abnormal phenotypic changes.
Explanation:
In which location would fisherman most likely catch a greater number of fish?
at the shorline
O intertidal zone
O in an upwelling
O on the deep ocean floor
Answer:
On the deep ocean floor
Explanation:
This is because it is the lowest layer of the ocean where little or no light penetrate. In this floor, there are abundance of organic matter which the fish majorly feed and that is why they abundant there. The temperature in deep ocean floor is moderate and it's okay for their survival. The humidity also is moderate and that is why they live there.
The human voice box is called ................
Answer:
larynx or vocal chord..
Answer:
larynx
Explanation:
why is only one nucleotide added at a time during DNA replication?
- to maintain the DNA mutations at an equal rate
- to reduce DNA mutations
- to increase DNA mutations
- to pass DNA mutations to the new cell
Answer:
answers is to increase DNA mutations
this is correct answerl hope it's helpful for u...
i need help filling out a graph.
Table 2: Translation of mRNA molecules
Codons. tRNA Anticodons. Amino Acid. Number of Water Molecules Produced
AUG (start)
i just need this first line
Answer:
Hello, did you finish it? I need help filling it out as well.
Explanation:
Most fossils from when living things die and are buried by
Answer:
Sedimentation, rocks piling on top of eachother and forming sediment
Explanation:
please help grades are due today
Does anyone know this word search?
Use the dichotomous key to identify the leaf pictured above.
Mimosa
White oak
Scarlet oak
American beech
Answer:
C. Scarlet Oak
Explanation:
USA Test Prep
A dichotomous key is an essential scientific means by which the various organisms can be identified by the observable traits and attributes. The dichotomous key contains various questions related to the group of organisms that can have those traits.
Scarlet oak is the leaf in the picture.
How to identify the leaf based on key?The leaf of the Scarlet Oak is of the simple type that is it does not have smaller leaflet divisions and is attached to the petiole or the stem of the plant.Only one leaf at a time is attached to the petiole and not in bunches. The leaf of the plant is lobed that is has various protrusions like pointed or round.The leaf of the plant is pointed at the tips and shows that it belongs to the Scarlet Oak plant.Thus, option C is correct.
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If you were a pea famer and you had both tall and dwarf pea plants but you wanted a pure breeding strain of tall plants how would you do it? (Tall plants are dominant to dwarf ones)
Answer and Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files.