BIOLOGY HIGH SCHOOL

The seed plants became dominant during the late ___ when the climate became ___ a. Cretaceo; drier b. Carbonifero; drier c. Carbonifero; wetter d. Cretaceo; wetter e. Cambrian; wetter

Answers

Answer 1
Answer:

Answer:

D. (Cretaceous, Wetter)

Explanation:

During the late Cretaceous period, seed plants took over. The cause for this was increased rainfall and moisture, which created the ideal environment for plants to develop and seed plants to reproduce.

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______are short and stout. a. Endomorphs b. Ectomorphs c. Mesomorphs
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Francois Jacob and Jacques Monod studied Escherichia coli (E. coli) bacteria by using lab experimentation. What revision to their initial hypothesis did they come up with?

Answers

Answer:The answer is two operons control bacterial respiration

Explanation:

The structures found within the skeletal system perform different functions within the body. Which of the following is not a function of bones in the human skeletal system?a. store minerals
c. move body parts
b. regulate body temperature
d. protect organs

Answers

your answer is C, 
Our body stores calcium, and other minerals
our body temp is also regulated by our skeletal system
and our skeleton protects vital organs

The function f(x) = 1.50x + 12.50 relates how much Kelsey pays for digital service, f(x), to the number of movies, x, she streams in a month. What is the value and meaning of f(18)?A. $27.00; this is the amount Kelsey pays for 18 months of service

B. $27.00; this is the amount Kelsey pays for 18 movies in 1 month

C. $39.50; this is the amount Kelsey pays for 18 months of service

D. $39.50; this is the amount Kelsey pays for 18 movies in 1 month

Answers

f ( 18 ) = 1,50 * 18 + 12.50 = 27.00 + 12.50 = $39.50,
x - number of movies.
Answer: D ) $39.50; this is the amount Kelsey pays for 18 movies in 1 month

Answer:

It's D

Explanation: (I got right on a quiz)

What is the function of negative regulator (tumor suppressor) genes?Choose 1 answer:
Choose 1 answer:

(Choice A)
A
To prevent uncontrolled cell growth

(Choice B)
B
To increase the risk of tumor formation.

(Choice C)
C
To target and destroy cancerous cells

(Choice D)
D
To promote normal cell growth and specialization

Answers

Answer:

a

Explanation:

What are the components needed in order for an experiment to be valid? Identify these components in the following experiment: A scientist is testing a new plant food to see if it causes plants to grow faster. The scientist tests two plants with the new plant food, and two plants he grows without plant food.

Answers

. Growing two plants without plant food at all doesn't count; in order to see if the new food is better, he must also grow plants with the original food in order to compare it. 
  have an independent variable. This is the type of plant food. It's independent because he has direct control over it.give plants the same conditions besides food: same water (amount), same light exposure, same temperature, etc.

choose a quantitative way to measure how much the plants grew, like mass or length.i need brainlest anwser to rank up help

explain the importance of the cytological markers (the translocated segment and the chromosome knob) in the creighton and mcclintock's experiment.

Answers

Answer:

Explanation: Cytological markers such as the translocated segment and the chromosome knob play a crucial role in various biological research and applied sciences. These markers have proven to be invaluable tools for understanding genetic diversity, evolution, and gene mapping in organisms. The translocated segment, which is an exchange of genetic material between nonhomologous chromosomes, can provide insights into evolutionary relationships between species. By studying translocations, scientists can determine how different species are related and how genetic material has been exchanged or rearranged during evolution. On the other hand, the chromosome knob is a distinguishing structure found on certain chromosomes that serves as a reliable cytological marker for gene mapping and breeding programs. It facilitates the identification of specific genes associated with particular traits or diseases through cytogenetic techniques. Moreover, these cytological markers enable researchers to develop breeding strategies that aim at improving crops' yield, disease resistance, or other desirable qualities by precisely transferring particular chromosomal segments or genes identified by the presence of knobs and translocations. Hence, understanding the significance of cytological markers is vital for both basic scientific discoveries and practical applications in agriculture and medicine.
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