1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Whitepunk [10]
3 years ago
15

Which of the following technological developments first allowed humans to successfully travel to outer space and back

Biology
2 answers:
oee [108]3 years ago
5 0

Answer:

No options were given however, to my knowledge, the first was the hot air balloon.

Maru [420]3 years ago
3 0

Answer:

what are the options

Explanation:

i need help on it too

You might be interested in
PLEASE HELP Compounds that always contain the element carbon are called
kvv77 [185]
I believe the answer is organic compound
3 0
3 years ago
Lemurs’ bodies are adapted to efficiently store energy for times when food is scarce. This adaptation may help to explain how le
Brums [2.3K]

Answer: Lipids.

Explanation:

The large carbon -hydrogen bonds(C-H) in chains of lipids makes them ideal storage of energy.

T<u>he more C-H bonds breakage, the higher protons availability from Citric acid cycle NADH and FADH2  and hydrogen atom splitting (to protons and electrons) for  the electron transport chains (ETC</u>), and therefore the higher proton pumps for  more ATP's synthesis in the mitochondria matrix.  

In addition large number of electrons  surrounding carbon atom in fatty acids than other food molecule is added factor.  The transfer of these electrons to oxygen during oxidation of fatty acids releases large amount of energy (9 kilo calorie) into the cells,  more than other food substances  

4 0
3 years ago
Given the gene sequence GGACCGTCGATCTTC, which of the following choices would represent an inversion mutation? A. GGACTCGATCTTC
nataly862011 [7]

Answer:

D. GGACCGTCGATCCTT

Explanation:

Mutation refers to any change in the nucleotide sequence of a gene. Mutation can be of different types depending on how it occurs. According to the question, an INVERSION mutation is a type of mutation in which a segment of a gene gets broken off and reattached in another way on the same DNA. Hence, the only change in inversion mutation is the arrangement of the nucleotide bases on the gene.

Considering the nucleotide sequence: GGACCGTCGATCTTC, the sequence that describes an occurrence of inversion mutation is: GGACCGTCGATCCTT because the segment TTC in the original sequence has been rearranged as CTT in the mutated sequence.

4 0
3 years ago
Why is water pollution a concern if water is continuously cycled through Earth’s systems?
erica [24]
Because some surface water might turn into ground water and some channels are there and it might go into a large body of water
3 0
3 years ago
Read 2 more answers
Importance of plants from an economic, nutritional, environmental and medicinal point of view
Inga [223]

Answer:

Plants are extremely important in the lives of people throughout the world. People depend upon plants to satisfy such basic human needs as food, clothing, shelter, and health care. These needs are growing rapidly because of a growing world population, increasing incomes, and urbanization .

Plants provide food directly, of course, and also feed livestock that is then consumed itself. In addition, plants provide the raw materials for many types of pharmaceuticals, as well as tobacco, coffee, alcohol, and other drugs. The fiber industry depends heavily on the products of cotton, and the lumber products industry relies on wood from a wide variety of trees (wood fuel is used primarily in rural areas). Approximately 2.5 billion people in the world still rely on subsistence farming to satisfy their basic needs, while the rest are tied into increasingly complex production and distribution systems to provide food, fiber, fuel, and other plant-derived commodities .

Medicinal plants have been used in healthcare since time immemorial. Studies have been carried out globally to verify their efficacy and some of the findings have led to the production of plant-based medicines. The global market value of medicinal plant products exceeds $100 billion per annum. This paper discusses the role, contributions and usefulness of medicinal plants in tackling the diseases of public health importance, with particular emphasis on the current strategic approaches to disease prevention. A comparison is drawn between the ‘whole population’ and ‘high-risk’ strategies. The usefulness of the common-factor approach as a method of engaging other health promoters in propagating the ideals of medicinal plants is highlighted.

5 0
3 years ago
Other questions:
  • Which of these would increase the carrying capacity of a prairie dog habitat?
    14·1 answer
  • Replication happens before a cell divides (Mitosis). So, like Mitosis, how many DNA are there after Replication is over? please
    14·1 answer
  • Which vessel of the heart receives blood during right ventricular systole?
    10·2 answers
  • Why is it incorrect to say that mitochondria function only as energy factories with cell
    11·2 answers
  • What is the name of the stiff nonconducting rod that develops down the back of the embryo of all chordates?
    10·2 answers
  • Particles are displaced perpendicular to motion (up and down) in which kind of
    5·1 answer
  • How did early man explain observed events in nature?
    5·1 answer
  • These groups of reproducing populations that are isolated from other groups
    7·2 answers
  • How do the chromosomes line up in Metaphase l?​
    7·1 answer
  • Distinguish between apocarpous and syncarpous
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!