Answer:
Females generally produce a few but large gametes, whereas males produce large numbers of much smaller gametes.
Explanation:
Describe the process of creating a designer baby.
Answer:
The term 'designer baby' refers to a baby that has been given special traits through genetic engineering. This is done by altering the genes of the egg, sperm, or embryo. These traits can, in theory, vary from lower resistance to diseases to even gender selection
Hope that helps!
What kind of genetic disorder is represented in the pedigree?
Answer:
an autosomal recessive disorder
Explanation:
Autosomal recessive disorders are inherited diseases caused by the presence of two copies (alleles) of an abnormal gene, thereby only homo-zygous recessive individuals are affected by this type of disease. In consequence, although both parents don't express the disease, they can be carriers and pass this recessive disorder to their offspring who express the disease. In this case, the pedigree shows that heterozygous parents are not affected but they are carriers of the recessive allele for this disease, thereby some offspring express the trait. The black circle (female) and the black square (male) indicate affected individuals in the pedigree chart. Since both parents are heterozygous, 1/4 (25%) of all offspring would be expected to have the autosomal recessive disorder.
11. How has our misguided, or inappropriate, use of antibiotics led to the development of organisms like
MRSA and VRSA?
Answer:
1. use of the wrong antibiotic
2. use of insufficient concentration of the right antibiotic
Explanation:
MRSA means Methicillin-resistant staphylococcus aureus
VRSA means Vancomycin-resistant Staphylococcus aureus
These are resistant forms of the bacteria Staphylococcus aureus to the antibiotics mentioned.
Bacterial resistance to antibiotics occurs when bacteria develop mechanisms that protect them against the effects of previously effective antibiotics.
Misguided and inappropriate use of antibiotics results in resistance, and they mainly occur as a result of two activities:
1. Use of wrong antibiotics: antibiotics are chosen using a microbiological technique called 'sensitivity testing', to determine which antibiotic is effective against a bacterium. However, when antibiotics are taken without proper sensitivity testing, the bacteria develop resistance against such antibiotics.
2. Use of inadequate concentration of the right antibiotic: This involves using less than the minimum inhibitory of minimum bactericidal concentration of an antibiotic against a bacteria. In this case, the organism has ample time to evolve in the presence of the antibiotic, hence the occurrence of resistance.
20 points ! multiple choice
4. Which part of the replication process helps reduce the chance for genetic mutation?
a. insertion of RNA primer sequences
b. sealing the gaps between fragments
c. opening multiple origins of replication
d. proofreading new DNA strands
Answer:
D
Explanation:
Key points:
- Cells have a variety of mechanisms to prevent mutations, or permanent changes in DNA sequence.
- During DNA synthesis, most DNA polymerases "check their work," fixing the majority of mispaired bases in a process called proofreading.
- Immediately after DNA synthesis, any remaining mispaired bases can be detected and replaced in a process called mismatch repair.
- If DNA gets damaged, it can be repaired by various mechanisms, including chemical reversal, excision repair, and double-stranded break repair.
that's from khan academy^
hey could u answer these tru/false questions thanks
1.when we classify living organisms we can know how many species there are.
2.taxonomists do not create new groups to fit for the newly classified organisms
3.all the organisms on earth are discovered nowadays
thnak you
Answer:
1.true
2.false
3.false
help will give brainlist
Answer:
C. Tapeworm and human.
What characteristics of the molecules being transported determines how they will cross the membrane?
A. Polarity and size
B. Size and mass
C. Passive or active
D. Charge and structure
which part of a green plant shows the greatest decrease in chloroplasts in the fall of the year?
Answer:
The Leaves
Explanation:
1c) The student finds more daisy plants in the open field than under the
tree. Explain this correlation. *
Explanation:
This happened because in an open field the daisy's have more sun to do photosynthesis so yeah
what is cellular respiration also called
Answer:
Krebs cycle, tricarboxylic acid cycle.
Explanation:
Cellular respiration is what cells do to break up sugars to get energy they can use. ... Usually, this process uses oxygen, and is called aerobic respiration. It has four stages known as glycolysis, Link reaction, the Krebs cycle, and the electron transport chain.
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules[1] or nutrients into adenosine triphosphate (ATP), and then release waste products.[2] The reactions involved in respiration are catabolic reactions, which break large molecules into smaller ones, releasing energy because weak high-energy bonds, in particular in molecular oxygen,[3] are replaced by stronger bonds in the products. Respiration is one of the key ways a cell releases chemical energy to fuel cellular activity. The overall reaction occurs in a series of biochemical steps, some of which are redox reactions. Although cellular respiration is technically a combustion reaction, it clearly does not resemble one when it occurs in a living cell because of the slow, controlled release of energy from the series of reactions.
Nutrients that are commonly used by animal and plant cells in respiration include sugar, amino acids and fatty acids, and the most common oxidizing agent providing most of the chemical energy is molecular oxygen (O2).[1] The chemical energy stored in ATP (the bond of its third phosphate group to the rest of the molecule can be broken allowing more stable products to form, thereby releasing energy for use by the cell) can then be used to drive processes requiring energy, including biosynthesis, locomotion or transport of molecules across cell membranes.
Answer:
Alternative Titles: cell respiration, tissue respiration. Discover how cellular respiration transforms your food into energy usable by your cells. Cellular respiration releases stored energy in glucose molecules and converts it into a form of energy that can be used by cells.
Explanation:
what does the atom in Latin means
When farmers want two desirable traits in cows, they often breed individuals that have those traits in the hopes that the offspring will have both desirable traits. What is this practice called?
Variation
Adaptation
Natural selection
Artificial selection
Answer:
artificial selection
Explanation:
When farmers want two desirable traits in cows, they often breed individuals that have those traits in the hopes that the offspring will have both desirable traits. The practice is called Artificial selection.
What is Artificial selection?Artificial selection is the process of identifying desirable qualities in plants and animals and then taking action to strengthen and pass those traits on to succeeding generations.
Artificial selection operates in a similar manner to natural selection, with the exception that in natural selection, these judgments are made by nature without human intervention.
Natural selection, sometimes summed up by the adage "survival of the fittest," is predicated on the following ideas: In the natural world, organisms give birth to more children than they can keep alive and reproduce.
Therefore, When farmers want two desirable traits in cows, they often breed individuals that have those traits in the hopes that the offspring will have both desirable traits. The practice is called Artificial selection.
To learn more about Artificial selection, refer to the link:
https://brainly.com/question/12560443
#SPJ2
What are stem cells? How are embryonic stem cells different from adult stem cells?
Answer:
Stem cells are the body's raw materials — cells from which all other cells with specialized functions are generated.
Embryonic stem cells are derived during early development at the blastocyst stage and are pluripotent, meaning that they can differentiate into any cell type. In contrast, adult stem cells are rare, undifferentiated cells present in many adult tissues.
hope this helps
Formulez des hypothèses sur le mode de contamination d'un individu et citez au moins deux conseils pour prévenir la contamination par le virus du rhume
Answer:
me no speak espanol
Explanation:
Describe what happens to the egg during the menstrual cycle on day 14. _______________________
Answer:Ok so A few days before Day 14, your estrogen levels peak and cause a sharp rise in the level of luteinizing hormone (LH). LH causes the mature follicle to burst and release an egg from the ovary, called ovulation, on Day 14.At about day 14 in the menstrual cycle, a sudden surge in luteinizing hormone causes the ovary to release its egg. The egg begins its five-day travel through a narrow, hollow structure called the fallopian tube to the uterus. hope this helps have a nice night ❤️❤️❤️
Explanation:
Answer: Because However, during days 10 to 14, only one of the developing follicles forms a fully mature egg. At about day 14 in the menstrual cycle, a sudden surge in luteinizing hormone causes the ovary to release its egg. The egg begins its five-day travel through a narrow, hollow structure called the fallopian tube to the uterus. The egg travels down the fallopian tubes. If pregnancy doesn't occur, the egg is reabsorbed into the body. Levels of oestrogen and progesterone fall, and the womb lining comes away and leaves the body as a period (the menstrual flow). The time from the release of an egg to the start of a period is around 10 to 16 days.
Explanation:
true or false passive transport moves molecules from an area of high concentration to low concentration
Answer:
true
Explanation:
Hope this helps
Why do scientists relate modern whale with hoofed animals?
Answer:
heres your answer
Explanation:
scientists knew that whales descended (evolved) from four-footed land mammals because whales and dolphins still have some features of land mammal: they use lungs to breathe air and give birth to young that are nursed by milk.
Which pair of nitrogenous bases will form a bond in a DNA molecule?
C and A
A and T
G and T
T and C
Answer:
A and T
Explanation:
Hope this helps you!!!!
Why do you think having such an extensive membranous area is beneficial when performing photosynthesis?
Answer:
Increasing the membrane area also increases the number of ATP and NADPH generating sites
Explanation:
Photosynthesis occurs in the chloroplast, more precisely in the membranes of the thylakoids that form stacks of disks called grana. A mature chloroplast may have 20 to 60 grana. In these membranes, there are photosystems, which are structural units of pigment-protein complexes that convert light energy from the sun into chemical energy stored in ATP and NADPH. A thylakoid may contain thousands of photosystems. In consequence, increasing the membrane area also increases the number of photosystems required for the synthesis of ATP and NADPH.
I need help I put a screen shot this is worth 44 points pls help
Answer:
1a, 2b, 7f, 4d, 3g, 5c, 6e
Explanation:
What causes one embryo to develop unique characteristics compared to the embryos of different species?
A. Particles of color are passed from parents to children.
B. Cells that become the colored part of the eye are passed from parents to children.
C. Nothing having anything to do with eye color is passed from parents to children.
D. Molecules (DNA) that contain the information that determines eye color are passed from parents to children
Answer:
D
Explanation:
Hope this helps
Answer:
d
Explanation:
Roughly what soil temperature do most soil organisms prefer?
Answer: Most soil organisms function best at the same temperatures people are comfortable at, or more specifically, in the 70s or low 80s F.
This is for Earth and Space but that wasn't a choice to pick.
Which statement best explains the impact of unfavorable oceanic conditions on human behavior?
1. Boating activities decrease along shorelines.
2. Families move toward shorelines.
3. People spend less time playing at the beach.
4. Recreational water sports increase on beaches.
Why does your vaccination status affect more people than just you?
Answer:
so i belive ur talking about the corona vaccinations so my answer is below! :D
Explanation:
if you get vaccinated, you are helping yourself and other people because it is most likely that you wont get corona if u have a vaccine. When you dont get corona that means that there are less people dying and you will reduce the level of deaths because ur not gonna get corona and give it to someone else. Once you get the vaccine you still have to be protected and wear a mask when you go outside just in case to protect your self and someone elses life. So, thats why ur vaccination status affects more people than just you. :D
also i just realized that you might not be talking about the corona vaccinations and u can be talking about the normal vaccines but the paragraph that i just wrote can be meant for normal vaccines as well :)
If Band 8 in Sample F represents the mutated gene that causes baldness, which other DNA samples may also
have the baldness gene?
Aye yo anyone know this question
Answer:
a
Explanation:
someone commented it.
Please help this question got me confused.
Plants and animals native to the temperate deciduous forest biome do all but what?
1. Hibernate
2. Suffer from humus in soil
3. Cooperate
4. Migrate
Answer:
2
Explanation:
There isnt much humus in soil in the deciduous biome
Individuals in a species have genetic variation that can be passed on to their offspring
(Use evidence and examples to support this claim)
Answer: Genetic variation within a species can result from a few different sources. Mutations, the changes in the sequences of genes in DNA, are one source of genetic variation. ... As a result, the tree-colored moths are more likely to survive, reproduce, and pass on their genes
Explanation:
Is the following statement true or false?
Evolutionary fitness means that an organism can reproduce successfully.
O True
O False
Answer:
TRUE
Explanation:
To an evolutionary biologist, fitness simply means reproductive success and reflects how well an organism is adapted to its environment. ... Organisms which are better suited to their environment will reproduce more and so increase the proportion of the population with their traits.
Match the following hormones to their functions.
1.)luteinizing hormone (LH)
2.)growth hormone (GH)
3.)oxytocin (OT)
4.)insulin
5.)antidiuretic hormone (ADH)
6.)parathyroid (PTH)
7.)aldosterone
8.)melatonin
a. responsible for maintaining the body's water balance levels by causing an increase in absorption of water within the kidneys when activated
b. regulation of circadian rhythms or sleep-wake patterns
c. causes an increase in the conversion of glucose into glycogen within the liver
d. inhibits the activity of bone cells in order to promote the release of calcium and phosphate ions into the bloodstream
e. increases protein synthesis and promotes cell division leading to growth of bones and muscle
f. stimulates ovulation to occur within the ovaries of females and the production of progesterone that aids in maintaining pregnancy
g. secretion results in smooth muscle contractions within the uterine wall during childbirth
h. regulates sodium absorption and potassium excretion in the kidneys
Answer:
a= Antidiuretic hormone(ADH)
b= melatonin
c= Insulin
d= parathyroid hormone (PTH)
e= growth hormone (GH)
f= luteinizing hormone (LH)
g= oxytocin
h= aldosterone